bluuebunny/crossref_metadata_2025 huggingface dataset:
A Study on the Improvement of Domestic Evacuation Safety Assessment through Case Analysis
Authors: Park Su Roh , Hwang Eun Kyoung
Published: December 2014

Recently buildings have undergone many changes with more high-rise, larger and more complex structures being developed. All over the world, safety designs for buildings are being established through a variety of experiments and analysis of the planning and design stage of a comprehensive and scientific performance-based safety design for evacuation. In this study, this study seeks to present development directions for criteria related to domestic evacuation safety assessment through case studies. As a results, it is necessary to develop simulation programs as well as fire and evacuation scenarios that reflect domestic characteristics such as human behavior characteristics and space and occupants’ speed of movement so that appropriate performance-based design can be established. In addition, as the evacuation safety assessment-related standards are being manifested in building law and fire prevention regulations, it is determined that the need to develop integrated codes is immediate.
Safety Evaluation of the Post-Earthquake Reconstruction Site in Wangjiagou, Minxian County, Gansu Province
Authors: Che Gao Feng , Chen Yu Jin , Liu Hong Mei , Zhong Xiu Mei , Ma Zi Juan
Published: December 2014

By collecting field data, reconnaissance site conditions, laboratory test and numerical analysis, it can carry out seismic safety evaluation of the Minxian post-earthquake reconstruction relocated concentrated settlements. According to grasp the site characterization of relocated concentrated settlements, site classification and its potential secondary seismic and geologic hazards, the paper will be from site classification and slope stability analysis to analyze the Minxian Wangjiagou post-earthquake reconstruction settlements site safety. On the basis of the calculation of the safety coefficient, combined with the "Specification of Geological Investigation for Lanslide Stabilization" and "Code for seismic design of buildings", the paper will give the site's seismic safety evaluation.
Study on Urban Flood Control and Drainage in Beijing
Authors: Zhan Sen Guo , Men Bao Hui , Wu Jia Jie , Duan Zheng Da
Published: December 2014

On 21 July 2012, a huge thunderstorm hit Beijing, prompting the city government to act immediately to deal with the emergency. Yet great losses were caused, exposing problems about urban flood control and drainage, and making people take a new look at them. It is not uncommon for a rainfall of such a degree to happen in Asia. Comparatively speaking, however, unlike in Beijing, fewer damages are caused in Taiwan, Japan and the Philippines given the same situation. In this article, therefore, the problems arising after a heavy rainfall and their solutions will be discussed.
Projects Decision-Making for Construction Enterprise under the Carbon Tax Policy
Authors: Ming Lu
Published: December 2014

Carbon tax policy is considered to be one of the effective measures to mitigate global warming. The construction industry, as a main source of carbon dioxide emissions, in the context of carbon tax policy, will face the fact that there is a sharp increase in the total construction costs. In order to reduce effectively carbon emissions in the construction project, and maximize the construction enterprises’ profit, this study aims to apply life cycle assessment in order to assess CO2 emission costs and adopt a mathematical programming approach to allocate limited resources. A case study demonstrates the validity of the proposed methodology.
The PFC2DSimulation of the Slope Stability
Authors: Lv Zhi Qiang , Wang Bin Sheng , Zhang Xiao Xue
Published: December 2014

The main factors affecting landslide instability are landslides lithologic ,geological structure, topography, climate, hydrological conditions, earthquakes ,human and so on .The risk assessment of landslide is an effective method for analysis landslide stability ,but there has been little research for prediction of landslide in China .In this paper, particle flow procedures is used to analyze the landslide stability under natural conditions and forecast a possible landslide sliding surface ,and a scientific method will be provided for landslide prediction.
Analysis of Network Technology Application in the Project Construction Management Process
Authors: Tong Zhi Neng
Published: December 2014

Method of network plan in project construction has been widely used, it complies with the requirements of the engineering construction management, organization and management is especially suitable for the construction of the project. At present our country network plan technology in engineering project theory and level with the foreign equivalent, but in the application of project management, especially the lag compared the supervision and control in implementing plan, tracking and adjustment, basically still stay on the preparation of the plan. This paper analyzes the present situation of the application of network technology in construction management, puts forward the ways and methods to improve the application of network planning technology.
Application of Value Engineering in Construction Project Management of Hydraulic and Hydroelectric Engineering
Authors: Chen Xin Fu , Cheng Peng , Wu Lang
Published: December 2014

In this paper, Management of construction projects that the Water Conservancy and Hydropower Construction Project Management to promote the important role of value engineering and practical significance, for the construction of China's water conservancy and hydropower project management to provide a theoretical reference and inspiration.
Education in the Field of Construction of Unique, High-Rise and Long-Span Buildings and Constructions
Authors: Gamayunova Olga , Vatin Nikolay
Published: December 2014

The construction of unique, high-rise and long-span buildings and constructions is a quite difficult complex task. It requires the participation of qualified experts with knowledge of the various branches of science. Specific requirements are to be nominated to regulatory support, security, and quality of materials and works. But especially important place takes the training of highly qualified specialists. The article describes the basic options of education in the field of construction of unique, high-rise and long-span buildings and constructions (on an example of Civil Engineering Institute of St. Petersburg State Polytechnic University).
The Statistical Analysis of Gravel Soil Permeability Coefficient of the Three Gorges Reservoir Area
Authors: Li Min Di , Zhang Guo Dong , Zhang Zhi Hua
Published: December 2014

According to the Geological Diversity and Soil Characteristics in the Gorges Reservoir Area, the Statistical Analysis was Carried on the Content, Grade, Porosity and Permeability Coefficient (PC) of Gravel Soil, Respectively. the Value of Saturated Permeability Coefficient (SPC) is up to 10-3. the Value of the Total SPC is that Zigui is the Highest, Badong-Fengjie Area is Less than that in Zigui, and it is the Lowest in Fengjie-Chongqing Area in its Distribution. the Relationship between the Montmorillonite (MMT) Content, Stone Content, the Uneven Coefficient and PC are all Positive. the Curvature Coefficient and Void Ratio are all Negatively Correlated with PC. these Data Showed the Relationship between the Index of Material Composition and PC of Gravel Soil.
An Analysis of Structural Defects in the Existing Agricultural Supervision Mode and Research on Optimal Path of Jilin Province
Authors: Xi Wei Dong , Qiao Qi , Sun Shao Fang
Published: December 2014

Based on analysis of structure and elements of Jilin existing supervision mode of agriculture products, I use archetypes to identify defects of Jilin agriculture products supervision mode and to find out the reason. The purpose of this paper is to combine the Jilin agricultural product quality supervision mode with the current situation and develop a mode which matches the situation better by adding "three-dimensional risk" in the regulatory mode, finding out the optimal path and proposing solutions.
Evaluation to Enterprises’ Comprehensive Strength of Patent Based on Fuzzy Comprehensive Evaluation
Authors: Xu Zhi Jin , Song Yan Kui
Published: December 2014

The enterprise’s comprehensive strength of patent is a key factor to measure its core competitiveness. It is of strategic significance for an enterprise to analyze and evaluate objectively its comprehensive strength of patent. On the basis of an amount of domestic and foreign literature survey, case study and expert consultation, according to the 4 aspects of creation, application, protection and management of patent, the essay constitutes preliminarily an overall evaluation index system of the enterprise’s patent comprehensive strength which is composed of a set of 16 indexes, and analyzes the evaluation model and method of enterprise’s patent comprehensive strength with the fuzzy comprehensive evaluation and through a real case. The essay thinks the evaluation in essence is multi-object, multi-factor, multi-layer, fuzzy and comprehensive, and emphasizes it is the most important to determine evaluation index system and to select evaluation method reasonably in order to evaluate the enterprise’s patent comprehensive strength systematically, comprehensively, scientifically and effectively, to enhance the enterprise’s core competitiveness, and to realize its sustainable development.
The Development of Moscow Office Real Estate Market and Key Features for System Approach Application
Authors: Volkov Andrey , Kievckiy Leonid , Kyzina Olga
Published: December 2014

The article shows the influence assessment of town-planning decisions on limiting the construction of offices in the center of Moscow on the real estate market. There are calculations according to Mosgorbti. This article contains evaluation of real estate companies.
The Real Estate Industry and Economic Development Issues Discussed
Authors: Tong Zhi Neng
Published: December 2014

Through the course of the economic cycle and the development of urban real estate industry analysis process, economic development, in-depth study of the real estate cycle fluctuations and macroeconomic volatility relationship, trying to figure out the development of the real estate cycle and links between the current economic city fluctuations in the real estate cycle process development law issues to try to do some qualitative research.
The Specificity of the City Target Programs on Reorganization of Construction and Demolition Waste
Authors: Chulkov Vitaliy O. , Volkov Andrey , Kyzina Olga , Gazaryan Robert
Published: December 2014

Вefore the statement of the problem analysis of the financial , economic and ecological effectiveness of the implementation of the city target program management of construction and demolition waste (CDW) was necessary, which are based on the existing rules scientific and planning activities, to formulate and solve the problem of the establishment and adoption of standards (giving them status of legitimacy and obligation to fulfill) the whole range of parameters, evaluating CDW recycling activities (including foreign experience and national specificity).
Life Cycle of a Building
Authors: Volkov Andrey , Chulkov Vitaliy O. , Korotkov Dmitriy
Published: December 2014

The article is considering the problem of resource management to support building in a functional condition. It offers the approach of forming infographic model of a building. It examines info graphic model of building’s lifecycle, infographic model of how to evaluate whether building construction process corresponds with project solution as well as infographic model of building lifecycle stages.
Approaches of the Czech Republic to Methodologies for Determination of Life Cycle Costs of Building Assets
Authors: Kuda Frantisek , Berankova Eva Wernerova
Published: December 2014

This paper presents an approach of the Czech Republic to methodologies for determination of life cycle costs of building assets. The problems of sustainability are adherent to the issue of determination of life cycle costs. There is an inexhaustible number of costs entering the life cycle, which is one of the motifs for determination of methodologies, presenting approaches for their definition. The objective of this paper is to analyse all of the approaches and methodologies in conditions of the Czech Republic. The paper includes a list of resources dealing with the topic and it is possible to work with them for determination of life cycle costs of building assets.
Structure Methods and Anti-Seismic Mechanism of Palace Type Timber Frame System Building in Tang and Song Dynasty in China(I)
Authors: Yang Ling Qiang , Wang Yan
Published: December 2014

Gold box bucket bottom slot hall-type building is a kind of the highest rank traditional architecture in China. The main structure consist of frontal column layer, tile layer and roof layer, in which, the connection between stigma and cap block, stigma and column base are yaw floating shelves.
Analysis of Beijing Sanlitun Village Business District and Space-Oriented Factors
Authors: Zhou Ya , Fu Shao Peng
Published: December 2014

Beijing Sanlitun Village business district is a relatively successful design case, and this article draws on Sanlitun Village by major research-oriented factors of Sanlitun Village business district space, summarize, research and analysis designed to want to be helpful to the design of commercial space.
Discussion on "Green Design"
Authors: Zhou Ming
Published: December 2014

Green design" is an international design trend appeared in twentieth Century 80 at the end of the 1960s, the environment which originated from the people of modern technology and culture and the ecological damage caused by reflection, reflects the regression designer moral and social responsibility. Green design is no doubt the concept of sustainable development in the design science reasonable extension in the. This article from the outdoor environment of green design and green indoor environmental design of two parts.
The Research of Column Base Culture in Chinese Traditional Architectures
Authors: Tang Xi Ya , Zhong Chen , Wu Lin
Published: December 2014

As the traditional construction of stress components, column bases became a typical representative of the perfect unity of Chinese traditional architectural structure component and art component with its rich shapes and vivid carving. For thousands of years, column bases bearing the essence of Chinese traditional culture and religion in the form of objects, and it also showing the exquisite building techniques of Chinese architects in visual form of art. The evolution of pillar bases is not only the epitome of the development of Chinese traditional architectural decorative art, but also the indispensable bright spots of Chinese traditional architectural art.
The column base, commonly known as “Sang Pan” or “column base stock”, which is the foundation under the column. It is a significant component under the column in wooden structure which could increase the stressed area, prevent moisture, keep smoothing as well as prevent the column from moving or sinking and strengthen the pressure. The column base was come into being for demand of enginery in ancient architechtures and had experienced the progress from hiding underground to cropping out. The changes of the column base’s position had made visual changes to the single straight column, with the function of load-bearing and decoration at the same time. For thousands of years, column bases bearing the essence of Chinese traditional culture and religion in the form of objects, and it also showing the exquisite building techniques of Chinese architects in visual form of art. The evolution of pillar bases is not only the epitome of the development of Chinese traditional architectural decorative art, but also the indispensable bright spots of Chinese traditional architectural art. The column base gradually become a perfect field where artists could display their skills and it gave artisans much possibility in its shape and decoration. 【１】Therefore, the column base has become the focal point of traditional architechture culture scholars because its decorative function is more than structural demand.
Russian Sections at World and International Fairs
Authors: Nikitin Yury , Goryunov Vasiliy , Murgul Vera , Vatin Nikolay
Published: December 2014

Russian exposition pavilions at world and international fairs, expressive and unique in their artistic formulation, were always among the most visible national buildings. Beginning with the first structures at the 1867 World Fair in Paris, Russia presented medieval Russian architectural forms at all subsequent exhibitions. An important feature of Russia’s exhibition building abroad was the supreme desire to achieve high quality despite the fact that the structures were doomed to destruction. Russian architects strove to create an original image of the national exhibition pavilion, and so their appeal to medieval Russian architecture was natural. The path followed by Russia when participating in world and international exhibitions was not chosen by chance. This was the route to Russia’s assertion of her national culture in the West.
The Liberty Style-Italian Art Nouveau Architecture
Authors: Goryunov Vasiliy , Goryunova Svetlana , Murgul Vera , Vatin Nikolay
Published: December 2014

This article refers the architecture of Italy of the end of the 19-the beginning of the 20th centuries. It shoes the origin of the term “Italian Liberty architecture”, its main centers, its peculiarities and the buildings of its leading representatives. The assessment of importance of such studies provide the right understanding of the processes in European architecture of this time.
Information System Design of High Residential Wall Advertising
Authors: Rong Yuan Xiao
Published: December 2014

The emergence of the network as the carrier with new media technology, network media to become a major new media in modern society, the network media encompasses all manifestations of traditional media and the characteristics of the aid of computers and networks to provide users with text, graphics, sound, and impact of integrated services such as data, this paper mainly from the perspective of digital information transmission methods discussed high-rise building wall advertising design.
Design of Mobile Living Room in Field
Authors: Zhao Xiu Guo , Niu Fu , Su Chen , Gao Zhen Hai , Ren Xu Dong
Published: December 2014

Mobile living room was designed to meet demand of persons in field. The inner layout of mobile living room and style of extended compartment were studied according to application of mobile living room. The compartment of mobile living room with integrating two-side extended structure with man-made operation was designed. The compartment of mobile living room was separated into two regions including bedroom and bathroom and equipped with correlative apparatus. Seven knock-down beds were installed in the compartment which can accommodate 14 persons contemporarily. A toilet was built up in the back part of compartment. Air conditioning and air heater were installed in the compartment. In conclusion the mobile living room can meet demand of persons in field environment with good chamber environment inside the compartment.
Evaluating Land Use Type Change and Ecosystem Services in Peixian County
Authors: Yu Jia Qi , Zhao Hua , Wang Yu Tong , Xu Jia Xin
Published: December 2014

Land use change ,which has a great influence on the ecological balance, is one of the major driving force in the evolution of regional ecological system. With coal mining and land reclamation for years , Peixian county’s land structure has been changed, which has a big impact on the ecological environment.Based on TM/ETM imagery interpretation data in 1988-2014, with the aid of remote sensing and GIS method, analysis of Peixian county nearly 26 a mining area land use change, and combining the mine actual situation, fix the corresponding ecological service value, calculate the regional ecological service value and its changing trends.
Research Status and Trend Analysis of Urban Space Development
Authors: Gong Tong Wei , Shi Jin , Li Feng , Zhang Yang
Published: December 2014

Based on the difference of urban space development researches and different categorization of space development features, this paper divides the researches into two aspects – mechanism study and model study. Since quantitative analysis has become the main research method nowadays, it is predictable that model research will enjoy more attention in the research of urban space development in China.
Conditions of Independent Movement and Orientation of Blind People in Public Space
Authors: Jurnickova Lenka , Kuta Dagmar , Zdarilova Renata
Published: December 2014

The paper deals with problems of independent movement and orientation of blind persons in public space. It adverts to the importance of understanding the public space in context with needs of the blind for orientation elements, points, lines and signs. The paper follows these sets of elements in public space more closely. The objective of this paper is to get a comprehensive insight into the problems and the definition of elementary orientation elements for provision of independent movement of blind persons in public space that are reflected subsequently in technical regulations.
A Discussion on the Energy Saving Waterscapes in City’s Residential Communities
Authors: Xu Han Lin , Yang Yun An
Published: December 2014

The waterscapes are indeed playing an important role in developing the quality of life in residential communities, but the cost is huge and can’t be overlooked. The research turned out to suggest that people should make full use of the various resources while building a waterscape. Now some typical residential communities in Tongren, Guizhou will be taken as the subjects of the research so as to find out the problems and 28put forth some concrete solutions.
FEM-Based Secondary Development of Geo-Material Constitutive and its Application
Authors: Zhang Xin , Yang Yong , Liang Meng , Li Ming Fei , Yang Zhao Peng
Published: December 2014

For the reason of clear conception and simple physical meaning, Duncan-Chang is applied widely in civil engineering field. With the user material subroutine UMAT provided by the FEM software ABAQUS and Fortran language for programming of Duncan-Chang nonlinearity constitutive model, we can easily express the nonlinearity of rock and soil. Meanwhile, the model is applied in sedimentation analysis of high embankment. The results indicate that there is the most horizontal displacement in about middle embankment height; there is the most vertical displacement in about (1/3~1/2) embankment height; there are the most major stress and minor stress in deepest place.
Hydrodynamics in the Luanhe River Alluvial Fan of the Piedmont Plain Zone, China
Authors: Guo Qiao Na , Zhou Zhi Fang
Published: December 2014

This paper investigated the interaction of groundwater and river in an alluvial fan of the piedmont plain zone, China. Field observations of groundwater level were performed. The three-dimensional finite element model using the simulator Feflow was used to simulate the observed groundwater level. The model was auto-calibrated against observations of groundwater head from wells distributed across the region. Good correspondence between simulated and measured water level was found for the monitored wells. The relatively small magnitudes of RMSE and MAE indicate that the predictions of the numerical model are reasonable. The water balance difference is -49.9×104m3/d, which indicates that the water balance is negative balance.
Analysis on Features of Hydrological Variation in the Seasonal Stagnant Lower Reach of Xiangjiang River
Authors: Pu Xiao Gang , Xu Zu Huai , Feng Xiao Xiang
Published: December 2014

Based on daily measurement of the water levels and flow rates made by hydrologic stations of Xiangtan, Changsha, Xiangyin, Lujiao at lower reach, Xiangjiang River and Chenglingji in the middle reach of Yangtze River from 1980 to 2010, the analysis is made on the conditions of typical hydrologic year at the lower reaches, Xiangjiang River and middle reach of Yangtze River as well as the temporal and spatial correlation of water level of different hydrologic stations of lower reaches of Xiangjiang River and Chenglingji Station and features of variation of water level and water gradient in different typical years. A definition for seasonal stagnant river was given according to the hydrological feature of lower reaches of Xiangjiang River on the base of current domestic and international summaries and definitions regarding stagnant flows.
An Environmental-Friendly Al-Cu Alloy Material for Electric Power Grounding Grid
Authors: Yan Feng Jie , Li Xin Geng , Yue Zeng Wu , Wang Xue Gang , Guo Kai
Published: December 2014

Galvanized steel, a general grounding material, has a short service life due to high corrosion rate in alkaline soil environment. An Al-4.5Cu-Re alloy was developed to overcome the shortcoming of galvanized steel. The properties of Al-4.5Cu-Re alloy were studied by accelerated corrosion test, grounding resistance test, electrochemical test and comprehensive electrical performance test in alkaline soil. The results show that the Al-Cu alloy with shot blasting and pre-oxidation exhibited low grounding resistance, high corrosion resistance, good comprehensive electrical performance and environment friendly feature. Al-Cu alloy with shot blasting and pre-oxidation can be used as grounding material.
Current Efficiency and Polarization Factors in the Electrolytic Process of Seawater Pretreatment
Authors: Nie Jing , Yi Shou Zhi
Published: December 2014

The performance of the electrode is the core technology of the electrolytic process of seawater pretreatment, and has the decisive influence on the systematic technological process and water quality. In the initial stage of electrolytic technology being applied in seawater pretreatment, soluble anodes, which use the aluminum, ferrum or other metal elements as the main ingredient, are chosen for most cases. And this method can effectively reduce the turbidity of raw seawater and sludge density index (SDI). While applying a variety of methods, the proportion of electrolytic aluminum, ferrum and other metal elements in the water can be effectively controlled. And this can increase the ratio of hydrolysate, but will also introduce the composition of soluble electrode into the seawater inevitably. At the same time, the use of soluble electrode will be consumed continuously with the production process, which is likely to add the cost of production. This study uses electrodes which contain a variety of precious metal (such as Ti, Ru, and Ir) oxide in the seawater pretreatment process, which is different from traditional chlor-alkali industry.
Isolation and Characterization of the Algicidal Bacterium DCJ-2
Authors: Liu Ting Ting , Peng Yu Fu , Liu Li , Xia Xue Shan
Published: December 2014

Algicidal bacteria as part of the microbial populations in natural waters, is possible toinhibit the growth of algae or kill algae, dissolve algal cells in a direct or indirect way. In this study,four algicidal bacteria were isolated from cyanobacteria bloom water of Lake Dianchi, designated asDCJ-1, DCJ-2, DCJ-3, DCJ-4 respectively. The algicidal range and algicidal activity assay of the fouralgicidal bacteria showed that they have different algicidal range on the 10 tested algal species, whichstrain DCJ-2 has the best algicidal activity. The results indicated that bacterial strain DCJ-2 has highalgicidal activity against the Plectonema boryanum and exhibited algicidal activity through directattack. The lytic effect of strain DCJ-2 against Plectonema boryanum was time-dependent. It could be a potential bio-agent to control the blooms of cyanobacteria.
Monitoring and Analysis of Benzene Derivatives and Ammonia in a Water Analysis Laboratory
Authors: Cao Qiao Ying , Gu Wei Li , Wang Lu Lu
Published: December 2014

Benzene derivatives and Ammonia contamination in University Laboratories can cause great harm to the researcher’s health. To investigate the status of air quality in the laboratory, Benzene derivatives and ammonia were monitored in a water analysis laboratory. Besides, the results of monitoring were analyzed to provide reference on the improvement of laboratory.
Numerical Analysis of Temperature Influence on Evaporation of Liquid Propellant Leaking Jet
Authors: Chen Jia Zhao , Zhang Yu Xiang , Ning Chao
Published: December 2014

In order to analyze the influence of temperature on evaporation of liquid propellant leaking jet, and to find measures to decrease the evaporation quantity, the mathematical model of the jet evaporation was established, and an example calculation was carried out by use of Fluent. The result shows that the evaporation quantity of propellant jet reduces obviously when the environmental temperature drops down, and it can be also reduced by using propellant with high boiling point.
Speciation Analysis of Harmful Elements in the Scheelite Tailings
Authors: Gu Zi Qiang , Liu Xu Qing , Xiang Ke , Qin Xuan , Li Ya Yun
Published: December 2014

The speciations of lead, zinc, arsenic from the skarn type scheelite flotation tailings of a Hubei Mining Co., Ltd were analysized on the ICP-AES spectroscopy, while the samples were prepared with the BCR three step extraction method proposed by the Standard Bureau of European Union and the improved BCR sequential extraction method proposed by Rauret.The results showed that: (1) The contents of arsenic, lead and zinc existing in Stable residual state, are 66.23%、41.44% and 36.34%, respectively, and the harmful elements in the tailings are basically stable under the normal environment conditions; (2)Lead in the exchangeable speciation with better activity occupies 24.61%,and the exchangeable speciation would be released out through the purification treatment of mineral processing wastewater and the placement clarification of the tailings to improve the rate of the residue state and to ensure the safety of comprehensive utilization of tailings; (3)Zinc in the oxidizable extraction fraction amounts to 40.30%, and the comprehensive utilization of tailings should prevent the release of zinc under the strong oxidizing conditions.
Experiment Analysis on the Mechanical Properties of the Horizontally Stratified Mudstone
Authors: Ma Fu Rong , Li Pi Liang
Published: December 2014

In order to analyze the physical and mechanical properties of the stratified mudstone, the specimens are collected from southwest Nanning , Guangxi, China. X-ray diffraction is used to analyze the mineral composition, the high montmorillonite content affects softening and expansion behavior of the mudstone. The strength tests show that the strength of stratified mudstone is low. When weakness layer exists in the mudstone, the strength is controlled by the soft layer. By long-term immersion in water, the strength will be approximately 76% to 85% reduction. The uniaxial compressive strength tests show that the ratio between soft layer and hard layer under natural is 0.17. The ratio between soft layer and hard layer under saturation is 0.10, under air seasoning is 0.42.
Study on the Cyclic Voltammetry Curve of Electrode in the Electrolytic Process of Seawater Pretreatment
Authors: Nie Jing , Yi Shou Zhi
Published: December 2014

The performance of the electrode is the core technology of the electrolytic process of seawater pretreatment, and has the decisive influence on the systematic technological process and water quality. In the initial stage of electrolytic technology being applied in seawater pretreatment, soluble anodes, which use the aluminum, ferrum or other metal elements as the main ingredient, are chosen for most cases. And this method can effectively reduce the turbidity of raw seawater and sludge density index (SDI). While applying a variety of methods, the proportion of electrolytic aluminum, ferrum and other metal elements in the water can be effectively controlled. And this can increase the ratio of hydrolysate, but will also introduce the composition of soluble electrode into the seawater inevitably. This study uses electrodes which contain a variety of precious metal (such as Ti, Ru, and Ir) oxide in the seawater pretreatment process, which is different from traditional chlor-alkali industry.
The Variation of Nitrate in the Soil Profile for Continuous Spring Maize System under Different Soil Fertilities in the Northeast of China
Authors: Yan Li , Cai Hong Guang , Zhang Zhi Dan , Gao Qiang , Lu Wen Xi , Feng Guo Zhong , Chen Yuan
Published: December 2014

In the continuous Spring Maize system in Northeast China,the nitrate accumulation and succession characteristics of different soils and fertility in three locations with five fertilization treatments, which included no fertilizer treatment (CK), farmer conventional treatment (FC), recommendation fertilization (RF), control-released fertilizer (CRF) and single fertilization (SF), was compared by 6 years’ long-term experiment. The results showed that nitrate accumulation was drastically significant in high pH soils; potential nitrate increasing trend of high fertility soil was lower; new type fertilizer, for example controlled release fertilizer (CRF), and recommendation fertilizer rate (RF) could obviously decrease nitrate accumulation in single fertilization and in split fertilization; the nitrate excessive accumulation in soils could be improved by not only controlling fertilization, fertilizer and fertilizer rate, but also considering of soil types and soil fertility; and at present, in Northeast China, nitrate accumulation was in rational and safety level, but still exist potential risk.
Effects of Sludge Concentration on EPS and Membrane Fouling in Anoxic/Aerobic Membrane Bioreactors
Authors: Wang Ying Zhang , Zhu Xin Yue , Su Bai Ge , Liu Zhi Qiang , Liu Hu
Published: December 2014

Sludge Concentration (MLSS) is one of major parameters for operation of Anoxic/Aerobic-Membrane Bioreactors（A/O-MBR）and it influences the removal efficiency of pollutants and the rate of membrane fouling as well. This paper focuses on the effects of different MLSS on the treatment of domestic wastewater, the quantity and composition of extracellular polymeric substance (EPS), and the variation of the rate of membrane fouling. It also includes a preliminary analysis of the correlation between EPS and membrane fouling to provide reference for future studies of the mechanism of membrane fouling.
Enhanced Phytoremediation on PAHs in Soils and Laboratorial Technics
Authors: Wu Yun Xiao
Published: December 2014

Potentials of three plant species, rape, alfalfa and white clover, separately or jointly on the degradation of polycyclic aromatic hydrocarbons (PAHs) in soil were estimated by pots experiments. Results showed the presence of vegetation apparently enhanced the dissipation of PAHs at initial concentrations ranging from 20.05 to 322.06 mg·kg-1. Within 70-day experiment, alfalfa and white clover showed higher efficiencies for removal of PAHs than those of rape, and mixed cropping greatly enhanced the dissipation of PAHs as compared to single cropping. On average 74.87% of phenanthrene or 62.81% of pyrene were removed from soils with mixed cropping of rape and alfalfa, and 72.01% of phenanthren or 68.44% of pyrene removed by mixed cropping of rape and white clover. Results suggested a feasibility of the establishment of multispecies remediation for enforcing the dissipation of PAHs.
Research on Diffusion Effect from Different Angles of Yangkou Sewage Marine Discharge Engineering Phase I
Authors: Yu Hang
Published: December 2014

The sewage diffusion is an environmental material for protecting marine environment. It plays an important role in port engineering. Its effect under deep water was carried out between different diffuser design parameters based on the hydraulic model test, and YangKou port sewage marine disposal project phase I was taken as an example. For this project, jet angle was controlled to be 0 degree, and horizontal angle was controlled to be 0 degree. It not only can ensure that sewage fully diluted mixed, also can avoid the premature convergence and sewage lifting. It is feasible for selecting large angle nozzle under deep water and there are some technical bases have been provided for other sewage marine disposal project.
The Characteristics of Runoff and Sediment Yield in Different Land Use Types in Southwest Mountains of Henan Province
Authors: Wang Guo Zhong , Tian Ying Chao , Qu Jian Gang , Xu Jian Zhao , Liu Zhan Xin , Yan Dong Feng
Published: December 2014

By indoor artificial rainfall simulator and slope plot test, the regularity of runoff and sediment yield of five types top soil— timber forest, shrubby grassland, terrace, slope cropland and waste-grassland under six kinds of rainfall intensity were studied in Danjiangkou Reservoir on southwest mountains of Henan Province to provide a scientific basis for comprehensive control of regional soil and water loss, to ensure the safety of water quality in the reservoir. The conclusions were that: (1) Land use types had less influence on the runoff comparing to sediment yield. (2) Sediment yield had obvious power function relationship with the runoff amount. (3) Bed load took up majority in the sediment yield of farmland soil while the bed load almost equaled to the value of silt load in woodland soil.
The Evaluation of Angu Hydropower Station Habitat and Analysis on its Influencing Factors
Authors: Deng Xu Yan , Deng Liang Ji , Hu Yu Fu
Published: December 2014

Located in the junction of Dadu River, Qingyi River and Minjiang River, Angu Hydropower Station has the typical characteristics of plateau estuary wetlands. Since river systems are inter-relate and interact each other here, the transitional zone is with the ecological characteristics of rich biodiversity, frequent human disturbance and fragile ecological environment. According to characteristics of regional wetland ecosystem, and based on the specific investigation on the regional ecological characteristics of the flora and fauna, sediment and water quality, this research built an index system and evaluated the function of ecosystem. And then taking it as basis, this paper distinguished the effect mechanism of different driving factors on wetland ecosystem with the method of gradient analysis, so as to provide theoretical basis for the ecological restoration of this region.
A Study on Operational Model of Container Multi-Modal Transport Virtual Enterprise Based on Multi-Agent Technology
Authors: Liu Hai Bin , Wang Xi Fu , Sun Hong Sheng , Zhang Wen Ying
Published: December 2014

Container Multi-modal Transport is one of Multi-modal Transport organizations that aim at realizing the best benefit of transporting cargoes. As it has remarkable advantages, container Multi-modal Transport has played an important role in international trade. This article put forward the origination model of Container Multi-modal Transport Virtual Enterprise (CMTVE) based on the conception, characteristic and adaptability of Multi-Agent technology, then it expatiated the Operational process of CMTVE. At last, this article built a CMTVE based on Multi-Agent technology to optimize the operational of container Multi-modal Transport, so it can become a flexible, dynamic, high efficient chain of transportation. Thus, this model can offer the operational optimization of container Multi-modal Transport a theory guide.
Large Sections Peak Traffic Flow Subway Station Simulation Modeling
Authors: Zhang Xin Hua , Xu Shu Hao , Wu Li Li , Du Yin Hua , Duan Zhi Jun , Chen Jian Ping
Published: December 2014

This paper, three subway lines converge site meet a change to the peak time for passenger flow analysis, with the analysis of passenger flow field physical statistics, image processing technology to guide passenger flow data, analysis of local area biggest traffic speed and density, traffic dynamics theory, the application of mathematical software Matlab, establish mathematical model.
Wind Turbine Grounding Resistance Numerical Calculation
Authors: Li Cong , Huang Ke Jie , Zhang Xiao Qing , Hu Nai Wen
Published: December 2014

With the increase capacity of wind turbines, grounding device's influence on the equipment and personal safety is becoming more and more significant. In order to calculate the grounding resistance of a wind turbine more accurately, in this paper, based on the Neumann integral formula and the average potential method is applied to derive a formula which can calculate the value of grounding resistance. A general MATLAB program corresponding to the calculation formula is compiled. By comparing the numerical value with the empirical analysis results and building a grounding resistance measurement test platform the correctness of the formulas and program is verified.
Study on the Influence of Construction of Shallow-Buried Underground Excavation Tunnel on Adjacent Masonry Buildings
Authors: Wei Gang , He Tian , Yang Zheng
Published: December 2014

This study simulated the condition of below-wall raft foundation supported masonry structure perpendicularly penetrated by shallow-buried and mining tunnelling using 3D MIDAS/GTS software with consideration of the coaction of structure, ground and tunnel. The load and deformation patterns of structure before and after the penetration of tunnelling excavation face were evaluated. Results from the study showed that: when the horizontal distance between the central axis of the structure and the axis of the tunnel L=0 m, the settlement of the structure increased before and after the penetration of tunnel through the masonry structure, and the settlement became stable after the tunnel passed through a certain distance (approximately 2.4 times of the thickness of ground cover); the structure settled overall and the difference of settlement was relatively small; the maximum first principal stress P1 and the maximum deformation rate E1 showed an overall increasing trend. With the increase of L from 0, inclination of the structure towards the tunnel was witnessed, the settlement of foundation appeared to be linearly distributed and the inclination rate of foundation first increased then reduced; P1 showed a decreasing trend and E1 first reduced, then increased and decreased again.
Research on Chamber Earth Pressure of EPB Shield Considering Soil Arching Effect
Authors: Cao Jing , Yang Hai Xing , Liang Bo , Liu Hai Ming
Published: December 2014

Chamber earth pressure is one of the significant parameters during the Earth Pressure Balance (EPB) shield construction processing. The soil arching effect is existence when the tunnel depth is enough. It is significant to consider the influence of arching effect to analyze the pressure in soil chamber in shield tunneling. In this paper, the influence of arching effect is considered to calculate the chamber earth pressure. Firstly, the soil is supposed as loose media, and the necessary buried depth of producing arching affects is deduced according to the loose media theory. Then, based on the characteristic of proper arching axis, the equation and the height of proper arch are obtained. At last, the calculation formula of minimum chamber earth pressure of EPB shield tunnel is deduced which can consider the effect of arching effect.
Research on Deformation Influence of Shield Undercrossing the Existing Metro Double Shield Tunnel
Authors: Peng Hua , Dong Zhi Yong , Liu Yun Liang
Published: December 2014

In the big cities, the shield undercrossing metro project has become critical to the safety of the metro, this paper takes the South-North Water Transfer Project shield under traverse Beijing certain subway project for construction background. It makes technical schemes comparison, analyses the deformation law of the existing subway structure and propoes protective measures to prevent the existing subway structure. The analysis showed the following conclusions: in shield undercrossing the metro project, in order to reduce disturbance on surrounding soils and the existing metro structure, we should take the necessary control measures such as grouting and determine the optimum shield parameters; the overall trend of the monitoring results accords well with numerical simulation results; The reason why the actual values and model calculation values has certain deviation is that it is difficult to consider shield parameters such as the pressure of shield thrust, pressures of grouting and so on in numerical simulation.
Study on Vibration Effect in Deep Underground Reservoir Blasting
Authors: Huang Bo , Wang Jian Guo , Wang Hong Bo , Fu Han Lu , Zhou Rong Bin , Feng Da Chong
Published: December 2014

Relying on the construction of a deep underground reservoir, vibration effects of ground were studied from two aspects: the peak value of vibration velocity and the basic frequency of blasting seismic waves, and were compared with the blasting vibration effect on the flat terrain surface. Research shows that blasting seismic wave’ impact on the surrounding building is relatively small because of its high frequency for the blasting excavation of underground reservoir. The frequency distribution in vertical and horizontal direction with scaled distance is roughly the same. And the peak value of vibration velocity in vertical direction is greater than that in horizontal direction, so blasting vibration effect in vertical direction is bigger than that in horizontal direction.
Support Optimization of 14-1103 Working Face in Zhengli Mine Based on Numerical Simulation
Authors: Li Yan Wei , Qin Ya Zhou , Liu Ji Ping
Published: December 2014

In the process of production of Zhengli mine 14-1103 working face, found that though the existing supporting system can satisfy the requirement of support, there will be a bulge in a few places, anchor invalidation etc. In order to guarantee safe production and high efficiency production requirements, it is necessary to optimize the working face support. In this paper, by the method of numerical simulation, compared the original support and optimized system, test the optimized supporting effect. It’s proved that lengthen the top bolt is an important measure for optimizing the support system.
Effectiveness Analysis of Promoting Deposition for Submerged Dike in Wenzhou Shoal
Authors: Li Wen Dan , Li Meng Guo
Published: December 2014

By means of natural condition、scour and silting evolution and mathematical models of wave, tidal flow and sediment, numerical study is carried out on deposit-promoting schemes in the reclamation project of Wenzhou shoal at Oujiang estuary in this paper. The main conclusions are:The scouring and silting reached equilibrium is 0.1~1.2 m in west side and 0.1~0.9 m in east side.
Cross-Section Model Test on Shelter Effect of Pile Jetty on Revetment
Authors: Jiang Yun Peng , Gao Feng
Published: December 2014

Pile jetty is a typical type of wharf in construction of port engineering and was often built in front of revetment. The reflected wave height, wave overtopping and pressure were usually reduced because of the barrier effect of upper platform and piles. Cross-section model test was in common use for the verification of structure design. The shelter effect of pile jetty on revetment was tested through cross-section wave physical model. Model scale was 1:20. The results show that the shelter effect is fairly obvious in high design water level. The reduction percentage was 33% of reflected wave height, 50% of wave overtopping and 30-50% of wave loading.
Discussion on the Method for Determining the Harbor Channel Design Width - Take the Proposed 250,000 ton Waterway of Panjin Harbor for Instance
Authors: Zhang Li
Published: December 2014

Reasonably determining the width of the harbor channel is one of the key issues of waterway design. This paper compares with the domestic and international relevant provisions for determining the channel width, summarizes the main factors of affecting the channel width, and takes the proposed 250,000 ton waterway of Panjin Harbor waterway for example, calculates and analyzes the differences of each specification, and points out the shortcomings of the domestic existing norms of our country and gives out recommendations.