bluuebunny/crossref_metadata_2025 huggingface dataset:
CO2 Emissions and Regional Economic Growth: From the Perspective of Energy Consumption in China
Authors: Tang Jie , Qi Zhong Ying , Li Chun Hong , Fu Ping Ping
Published: June 2012

This paper examines the relationship between carbon emissions per capita and economic growth, carbon emissions intensity and economic growth from the perspective energy consumption for the period 1990-2008 respectively. Empirical results reveal that there exist long term cointegration between carbon emissions, regional economy growth and energy consumption in China. We apply dynamic and static panel data model to estimate the curved shape of the relationship between economy and carbon emissions while considering energy consumption respectively. We find that the curved shape is inverted “N” in static panel data model and dynamic panel data model, rather than inverted “U”. Finally this paper gives some suggestions that policy-makers can take different implementation of energy reduction and promote low carbon economic development.
The Research of Developing Circular Economy in Enterprise by Using Closed-Circuit Circulation Principle
Authors: Tao Zhao Yun , Li Xin Jian , Han Pei Li
Published: June 2012

Since the reform and opening up, China's economic construction has made remarkable achievements, but the extensive mode of economic growth brought about by the growing environmental problems. The real way out is to apply the theory of circular economy, the use of environmentally sounds of the means of production, from the source to reduce pollution and achieve development in harmony with the environment. This article describes the recent years, some scholars to study the application of circular economy and business results, and proposed vision for the future.
Construct the Environmental Economic Policy System of Jilin Province
Authors: Lv Jin , Liu Jia Li , Wen Hui Min , Zhao Rui , Wang Ming Zhe , Piao Jian Ying
Published: June 2012

During The "eleventh five-year plan" period, Jilin greatly promoted the construction of pollution treatment project by implementing the reduction measures, COD of the main pollutants and the sulfur dioxide emissions get controlled basically, environmental degradation get eased in some degree, but the overall environment situation is still severe. This paper proposes appropriate environmental economic policy system based on the energy saving and emission reduction policy implemented in Jilin province,, discusses the environmental finance, green credit policy and emissions trading, to adjust pollution reduction structure and promote the environment economy coordinated development of Jilin Province.
To Perfect Environmental Legal System and Supervisory Mechanism, to Strengthen Sense of Social Responsibility in Enterprises - A Brief Discussion of the Relationship between Environmental Protection and Economic Development in Enterprises of Large and Medium-Sized Cities and the Strategies
Authors: Xiao Cong Li , Li Na , Li Xin
Published: June 2012

Harmonious development of environmental protection and economy is a realistic choice made in specific national situation for economic development and environmental protection. It has some kind of complexity. However, large and medium-sized cities develop very fast and the problem of environmental pollution becomes more and more obvious. Thus, how to effectively coordinate the paradox between economic development and environmental protection in large and medium-sized cities and achieve the good cyclic double-win between economic development and ecological environment are the main contents of this paper.
Environmental Protection in the Port Construction and Operation in China
Authors: Yang Yan Mei , Sun Xue Song , Zhao Jun , Sun Jiao , Yang Qing Wei
Published: June 2012

Port environmental protection, with the rapid development of water transportation industry, attracts more and more attention. This paper, on the basis of introducing the development of port environmental protection in China, analyzed the problems of environmental protection in the port construction and operation, and suggested what should be improved in the future.
Residual Subsidence Prediction of Abandoned Mine Goaf Based on Wavelet Support Vector Machines
Authors: Wang Zheng Shuai , Deng Ka Zhong
Published: June 2012

The prediction of residual subsidence is the fundament of stability evaluation of buildings foundation in the abandoned mine goaf, so how to get the residual subsidence with high precision is significant to reclaim the goaf for buildings. In this paper, a novel prediction model named wavelet support vector machines (WT-SVM) is proposed to forecast residual subsidence. Aiming at the stochastic fluctuation of the subsidence series, the measured data of residual subsidence were separated into components, namely, trend, oscillating sequence and stochastic signal, via wavelet multi-resolution analysis; then, the prediction model was established based on SVM regression algorithm, respectively, and the sum of the total corresponding prediction values were regarded as the final results of the residual subsidence. The predicting results of WT-SVM, SVM and BP neural network (BP-NN) were compared by a case study. The conclusions are as follows: WT-SVM model is obviously superior to other models in terms of the aspects of prediction precision, step and stability, which indicates the feasibility and effectivity of WT-SVM in predicting residual subsidence of the abandoned mine goaf.
China’s Embodied CO2 Emissions: Based on UV Tables
Authors: Li Shu Lin , Qi Zhong Ying
Published: June 2012

UV tables, rather than input-output table adopted in most literature, are used to analyze the embodied CO2emissions of China in this paper. This method can avoid overestimating the embodied emission coefficients. Based on the assumption of "emissions avoided by imports" (EAI), we calculated China’s emissions embodied within products manufactured domestically (EEP) and those within products consumed domestically (EEC) in 1997,2002 and 2007. The result shows that all of EEP exceeded EEC in the three years. The diffences (EEB) were 575.85, 627.30 and 1834.12 million tons, being 17.15%、17.16% and 27.20% of EEP respectively. It means approximate 1/6~1/4 of per unit CO2manufactured in China was consumed “purely” by other countries, also called "carbon leakage". Furthermore,we built a fixed effects model to detect the factors influcing the emission coefficients. It is found that technical progress will be helpful to decrease the coefficients, meanwhile, the total emissions.
Comparison of Principal Factors between China Actual Environmental Risk (CAER) and China Zero Environmental Risk (CZER)：Behavior Angle
Authors: Liu Chang Qing
Published: June 2012

Studies on comparison of principal factors between CAER (China Actual Environmental Risk) and CZER (China Zero Environmental Risk) from Behavior Angle are seldom found, so we studied the theme above in this thesis. By analysis, we have known that on one hand, there are such aspects in common as natural cause, production action, living action, production waste disposal, and living waste disposal between CAER and CZER. On the other hand, they are different in such aspects as Government surveillance only for CAER, and public management and market management only for CZER. And our related advice is as follows: first, careful protection of natural environment. Secondly strict surveillance on production of waste from such behaviors as enterprise production and human living action by market management, public management, and Government surveillance, etc.. And thirdly great encouragement to arouse interest in technological innovations friendly with the environment in waste disposal, etc..
Discussion on Marine Eco-Compensation Standard of Land Reclamation from Sea: A Case Study of Dadeng Sea Area, Xiamen, China
Authors: Lian Ping Ting , Chen Wei Qi , Zhang Luo Ping
Published: June 2012

This paper chooses a land reclamation project of Dadeng sea area, Xiamen as a case, and put emphasis on discussing how to calculate the marine eco-compensation standard of land reclamation from sea based on the losses of ecosystem services. It starts with the classification of coastal ecosystem services and the analysis of adverse impacts caused by the reclamation project, and then builds the relevant valuation models of ecosystem service losses under the above classification framework and estimates the losses of coastal ecosystem services incurred by the project. On the basis of these, the paper puts forward a method for calculating the theoretical compensation standard and applies it to the case study. The results show that, the total loss of ecosystem services caused by the land reclamation project amounts to 40.88 million yuan/a, in which the loss of space resources (i.e. mariculture space) in provisioning services is the largest, amounting to 30.71 million yuan/a, and the loss of per unit sea area is about 4.19 yuan/m2a. The estimated compensation standards are 209.6 yuan/m2 with discounting rate of 2% and 93.2 yuan/m2 with discounting rate of 4.5%, respectively. It is proposed that the compensation amount can be determined through bargaining between compensators and compensation receivers in practice, based on the theoretical compensation standard as well as the compensation receivers’ willingness to accept, the economic level of land reclamation area, and the local cultures et al.
Harvesting of a Prey-Predator Fishery Based on Holling Type II Functional Response System
Authors: Wu Ting
Published: June 2012

This paper explores a reasonable ratio-dependent prey-predator system with Holling type II. By applying the Pontryagin's maximal principle, the optimal tax policy is investigated. A simulation is carried out in the end.
In Search of Causal Relationship between FDI, GDP, and Energy Consumption - Evidence from China
Authors: Kuo Kuo Cheng , Chang Chi Ya , Chen Mei Hui , Chen Wei Yu
Published: June 2012

The balance between economic growth and environmental protection has been the core concern of policy makers in developing countries for the past two decades. This study is one of the few studies to empirically inspect the relationship between economic growth, FDI, and energy consumption over the period 1978-2010 in China. The results reveal that there is a unidirectional Granger causality running from GDP to energy consumption. This suggests that increase of GDP will consume more energy and implementing of the energy conservation policies and energy demand management policies in China may not have negative impact on economic growth. Besides, a bi-directional Granger causality has been found between energy consumption and FDI. This implies that Chinese government should cautiously evaluate the positive and negative effects of FDI inflows and put efforts into making more effective control policies on environmental protection.
Material Form and Nature of Depth Space Resources
Authors: Cai Yi Ming
Published: June 2012

In this paper, based on the theory of breadth space and depth space energy and other resources utilization innovatively and scientifically divided by the author, the material form and nature of depth space resources including energy are demonstrated and the laws and formulas are also put up which hold profound meanings both in natural sciences and social sciences.
The Construction of Chinese Green Hotel under the Condition of the "Two Type Society" Constructions
Authors: Liu Fei Long
Published: June 2012

It is an important strategic measure to realize the transformation of development mode of Chinese economy that constructing the ”Two Type society”. Hotel industry has been considered to be one of the high energy consumption and high waste disposal industry. Thus, how to reduce the energy consumption and protect the environment, become the problem that country's hotel industry must face, and "green hotel" construction is the effective way to solve the problem. To solve this problem, measures are as follows. strengthen the education of the staff and the hotel green consciousness atmosphere. implement objective assessment to make the hotel’s environment protection system perfect. foster hotel staff of good environmental protection habit and pay attention to the science of the green hotel environment. build the green hotel of the core region of the hotel. And the last is strengthening the matching work of the hotel facilities and reducing energy consumption in order to promote the positive circulation of the hotel.
The Dimensions of Place Attachment and its Effect on Environmental Responsible Behavior
Authors: Li Jian Xin , Liu Li , Liu Dan
Published: June 2012

World is facing serious environmental crisis, and the willingness to protect the environment becomes more and more positive, but environmental behavior don’t grow with the will. This paper tried to explain the gap between environmental attitude and environmental responsible behavior from place attachment, and explored the moderating role of environmental attitude. The findings showed that place attachment had significant influence on environmental responsible behavior, and the influence was moderated by the environmental attitude. Implications and limitations of these findings were discussed.
The Effects of FDI on Carbon Emission through Technical Channels: Evidence from Chinese Industrial Sectors
Authors: Liu Hui Huang , Li Zi Hao
Published: June 2012

In this paper, we examine the influence of foreign direct investment (FDI) on Chinese industrial carbon emission through technical channels. Based on data from Chinese 35 industrial sectors during 1999-2008, and using the different indicators which represent diverse technical effects channels, we investigate technology effects of FDI on Chinese industrial carbon emission. Results show that FDI do bring positive influence on Chinese carbon emission in industrial sectors through technical channels and these effects of FDI reach maximum one year later.
A Study on Visitors to Recreational Farm Regarding Perception of Ecotourism, Recreation Experience and Willingness to Revisit
Authors: Huang Hsiu Chin , Lai Yi Hsuan , Chen Lu Sheng , Chang Chia Ming
Published: June 2012

The main objective of this study is to verify the impact relation between perception of ecotourism, recreation experience, and willingness to revisit for the visitors to recreational farms. A questionnaire survey was conducted on the visitors to four recreational farms. A total of 400 questionnaires were distributed, and 342 effective questionnaires were collected. Statistical analysis of the data from this study shows: 1. perception of ecotourism directly and positively affects recreation experience; 2. perception of ecotourism directly and positively affects willingness to revisit; 3. recreation experience directly and positively affects willingness to revisit. Finally, the study will provide managerial suggestions for businesses.
Ecologization: An Inevitable Choice of Chinese Modern Urban Sustainable Development
Authors: Fang Shu Rong , Yao Hong , Zhao Li , You Zhen , Jiang Hui
Published: June 2012

The paper summarizes the connotation of modern urban ecologization and elaborates on that Ecologization is the inevitable choice of Chinese modern urban sustainable development. From the natural resources exploitation and utilization, balance of urban ecological system, software and hardware facilities, the structure of urban ecological system, analyses the main problems of chinese urban ecologization. Put forward the development tactics of modern urban ecologization: i.e. the ecologization of consciousness of modern Urban residents, the ecologization of modern city planning, the ecologization of modern city science and technology, the ecologization of modern city economy, the ecologization of modern city landscape and the ecologization of modern city management.
Study on the Truss Support Technology for Coal Side in a Soft Broken Coal Roadway Under High Stress
Authors: Dong Shou Yi , Duan Qi Tao , He Fu Lian , Li Qi , Jiang Hong Jun
Published: June 2012

The coal side deformation and sliding can not be effectively controlled by use of the traditional bolt or cable support in the high stress crushed surrounding rock and large section roadway. For solving this problem, the new prestressed truss support technology is put forward, and its supporting principles of roof and two walls are stated. The mechanical model of cable-channel steel truss is established, and then the tensile strength of the cable and the maximum deflection of the channel steel are derived. By way of field investigation, mechanics theory analysis and actual production condition, the scheme is defined and applied in the replacement roadway. Measurement results of surrounding rock behavior show that the coal side displacement is no more than 254mm and the roof convergence is less than 172mm. Apparent economic and technical profits have been achieved.
On the Establishment of Ecological Circular Economy under the Guidance of Sustainable Development Concept
Authors: Li Zhi
Published: June 2012

Beginning with the increasingly serious situation facing human society, it describes the origin and meaning of ecological circular economy; after that, it focuses on the three main principles of the eco-circular economy, they are reduction, reuse and recycle principles. Then, it analyzes the eco-circular economy further from the angle of industrial technology and economic dimensions, summarizes the barriers to the development of eco-circular economy. Finally, the paper elaborates a number of measures in the establishment of eco-circular economy.
Regional Difference and its Influencing Factors of China's CO2 Emission Changes
Authors: Zhang Hong Wu , Shi Lin Yun , Lan Zi Rui , Yin Jia Hui
Published: June 2012

Abstract. Regional difference of China's CO2 emission is basically in line with the trend of China's economic development that the emission is higher in the eastern coastal areas and lower in the western inland areas. The characteristic of the changes of the total CO2 emission is that the growth rate significantly accelerated after 2000. The basic factor which acts as a drive of CO2 emission increase is economic scale factor and the energy saving factor contributes to the decrease of CO2 emission. The driving power of the population factor and energy conversion factor is weak especially the influence of energy conversion factor is very instable. All the provinces are driven by positive driving force in economic scale factor and most provinces with great driving power are located in the eastern coastal areas. All the provinces are driven by positive driving force without expectation in energy conversion factor and most provinces whose energy saving efficiency improvement is of range small are driven poorly are located in the inland. Provinces are mostly driven positively in population size factor and this is related with size and orientation of driving force and population growth. The reason of the great difference of energy conversion factor is connected with energy consumption scale and change of CO2 emission energy unit consumption.
Research on Core Competence of Construction Enterprises in Low-Carbon Economy Perspective
Authors: Qi Bao Ku , Li Ke Bo , Zhang Xiao Yue
Published: June 2012

This article expounds the connotation of core competence of construction enterprises and establishes the evaluation index system about core competence of construction enterprises in low-carbon economy perspective. Using AHP-entropy weight method to determine the evaluation index weight, then applying linear weighted to calculate comprehensive evaluation value of all target. Finally obtaining the final evaluation results.
The Qualitative Analysis of Two Populations Commensalisms Model
Authors: Sun Guang Cai
Published: June 2012

This paper deals with the mathematics model of two populations Commensalisms symbiosis and the stability of all equilibrium points the system. It has given the conclusion that there is only one stable equilibrium point the system. This paper also elucidates the biology meaning of the model and its equilibrium points.
Assessment and Forecast of Urban Sustainability Based on Dynamic Indicators
Authors: Guan Dong Jie , Zhou Ji Xia , Ye Qing , Zhou Jian , Zhang Xue Ru
Published: June 2012

At present, environmental issues associated with rapid economic development are becoming critical concerns that arouse government’s and people’s particular attention. A large amount of influencing factors and especially their complicated interactions have always thrown confused insights into assessing the dynamic evolvement and sustainable development of urban economy–resource–environment (ERE) system and programming the developing strategies. According to connotation and framework of sustainable development, this study proposes a hierarchical multi-level method to evaluate the urban sustainability in Chongqing city of China suffering from depletion of resource and degradation of environment. Integrated assessment results indicate that the current ERE system of Chongqing is not sustainable; environment development mode is more effective to sustainable development of urban ERE system. Under the considerations of development features and regional differences, as well as regular discipline on urbanization, a coordinated combination of environmental, resource and technology modes is believed to realize sustainable development of ERE system.
The Influence of Fault Dip Angle on the Floor Fault Activation
Authors: Li Hai Long , Bai Hai Bo , Yao Bang Hua , Yang Cheng , Wei Xiao Qi
Published: June 2012

In order to study the influence of different fault dip angle on fault activation under different mining conditions, the supporting pressure distribution model of corresponding working face is established and the formula of stress on the fault plane is also derived. Combined with the Mohr-Coulomb yield criterion, the essay summarizes the critical factor of fault rock yield activation. The contributions of fault dip angle and base disturbance to critical factors are further analyzed. At the same time, by using FLAC software, the rules of different inclined fault in mining whose floor of the plastic zone around the propagation and the variation of the stress field characteristics are analyzed. The simulation results showed that connected condition of floor plastic zone and the regularity influence floor water inrush. The research shows: small obliquity faults and shallow area faults are more likely to be activated, and small obliquity faults are more susceptible to affect disturbance leading to the bottom of plastic failure. The results would have an important value to preventing against fault water inrush accident and projecting the waterproof pillar.
Research on the Cultural and Industrial Development of the Old City at Xiaoyi Based on the Concept of Sustainable Development
Authors: Han Wei Cheng , Chen Yan Hong
Published: June 2012

There has recorded rich and precious historical and cultural information and has retained massive traditional life pattern. It has profound cultural background, and the existing ancient civilization inheritance is one cultural resource, ancient, unique, closed and complete. From the cultural industry angle, this article analyzes the history and development of Xiaoyi, probes the value of the old city at Xiaoyi as the cultural resource, and proposes the pattern of realizing the sustainable development of the society, resource and economy at Xiaoyi, guided by the sustainable development concept.
Sustainable Development, Environmental Pollution and Social Management around Poyang Lake
Authors: Yu Chong , Li Li Wen
Published: June 2012

With the rapid construction and development of ecological-economic Poyang lake zone, resource exploitation brought on many environmental problems. The main reason is that the production –centered development strategy makes the environmental problems marginalized, which cause the enterprises escape liability, the existing social management system make social balance mechanism ineffective. It is urgent that people-oriented policy systems shuold be built， laws and regulations should be perfect and develop environmental education to promote industries to corporate social responsibility.
Template Matching Based on Polar Coordinate
Authors: Miao Xu Juan , Li Xiao Fei
Published: June 2012

A new template matching algorithm based on polar coordinate is proposed to improve the performance of the tracking system. The shape of the matching template is round, and the pixels in the template and the matching area are arranged into circle, which can ensure the rotation invariance of the method. Some differential matching information is added into the matching criterion function, which makes the method have higher recognition precision. In the long time target tracking process, template updating operation is adopted to avoid losing the target. Simulation results prove that the method can be applied in the TV tracking system. Using the same controller, the method has better tracking performance.
Three-Step Method with Fifth-Order Convergence for Nonlinear Equation
Authors: Sun Li , Fang Liang , Wang Yun
Published: June 2012

We present a fifth-order iterative method for the solution of nonlinear equation. The new method is based on the Noor's third-order method, which is a modified Householder method without second derivatives. Its efficiency index is 1.4953 which is better than that of Newton's method and Noor's method. Numerical results show the efficiency of the proposed method.
A Maximum Loss Minimization Model for Portfolio Selection Based on the CVaR Measurement
Authors: Wang Cong , Zhang Zhi Gang
Published: June 2012

With the application of the pessimistic decision-making method, we make our portfolio selection with the objective of “maximum loss minimization”. First, we develop a maximum ordinary loss minimization model and then we form a maximum mean excess loss minimization model on the basis of the CVaR risk measurement. On the basis of the two models, we put forward a new concept loss gap and define it. Last, we establish a maximum loss gap minimization model and discuss the relationship between it and the MV model.
Analysis of the Development of Contemporary Industrial Design
Authors: Li Han , Li Yuan Jun , Rui Xiao Guang , Zhang Yan
Published: June 2012

Filled with foreign brands, today China’s contemporary industrial design is in the low stage. With the development of social-economic and scientific technology, also the improvement of the quality of people's lives, their requirements of the functions of daily industrial goods and the outlook design are higher . Contemporary industrial designers must combine the public traditional conception and modern lifestyle organicly, and take the outstanding national culture as the main line, draw on the successful experience of the developed countries, in order to make China's industrial design property that is provided with national character and powerful vitality prosper. This paper starts from the rise of industrial design since the Reform and Opening up, and put forward a number of industrial design ideas and suggestions through the analysis and interpretation of the twists roads of the recent decades.
Mechanical Property Analysis of the Frame of Papermachine Dry Section Based on Finite Element Method
Authors: Hou Shun Li , Yang Hai Yan , Su Xiong Bo
Published: June 2012

This essay analyses the mechanical behavior of the paper machine drying section rack by FEA method, obtaining transformation and stress distribution of the rack under static loading, so as to achieve the natural frequency and the corresponding strain, stress of the rack. This paper could provide theoretical foundation for design, fault diagnosis or reforming speed acceleration.
Visualization of Mining Monitoring Is the Development Direction of Coal Mine Safety Production
Authors: Li Yu Liang , Zhang Chuan Kai , Liu Jing Yuan , Li Jing
Published: June 2012

Coal mine engineering mostly underground mining engineering. Underground mining engineering is inseparable from the underground lighting; the lighting can be engaged in underground work. Lighting conditions is gradually improved with the progress of science and technology development, now the production of environmental lighting conditions has been greatly improved. Therefore, Visualization of mining monitoring not only contribute to the safe production of coal mine but also achieve the production disaster forecast according to daily image recording.
Analysis on Instability of Surrounding Rock in Gob-Side Entry Retaining with the Character of Soft Rock Composite Roof
Authors: Yang De Chuan , Gao Ming Zhong , Cheng Yun Hai , Sheng Wu , Chen Jia Sheng
Published: June 2012

The filling belt of gob-side entry retaining with the character of soft rock composite roof,deforms violently,affected by the fracture and rotation of the main roof,and is prone to instability.This essay,considering characteristecs of coal mine pressure behavior on -790m 1311 (1) working face ventilation roadway at DingJi coal mine in HuaiNan,puts forward structural mech -anics model of the key block of gob-side entry retaining,which is used to forecast the position of the fracture line of the main roof, and analyze the roof subsidence at the side of the filling belt;It applies FLAC and UDEC to simulate distribution of plastic zones of surrounding rock of gob-side entry retaining,and stress variation law of the immediate roof and the main roof along coal seam inclination.The results show that:stress concentration factor of the immediate roof on the filling belt is about 1.6,first decreasing and then increasing with increasing width of the filling belt,which indicates that reasonable width of the filling belt is 3.0 m in accordance with the requirement of economic security requirment. The filling belt has significantly wide distribution of the plastic zones,with its four corners obviously plasticized,and overlying strata above the filling belt at side of goaf suffering upward plasticization,which is the result of rotation of the main roof; Deform- ation instability of filling belt is mainly caused by fracture rotation of the main roof;Finally, the measures to reduce the instability of gob-side entry retaining with the character of soft rock comp- osite roof are put forward.
Stress Shell Mechanical Mechanism of Fully-Mechanized Face Enhancing the Upper Limit for Coal Mining and Risk Analysis of Support Break-Off
Authors: Hou Jun Ling , Sun Yan
Published: June 2012

Based on the geological conditions and specific mining technology conditions of the 11014 mining face of Panbei mine in HuaiNan mining group ,using the FLAC3D software, simulate the stress distribution rule and disruption field distribution rule of surrounding rock of Fully-Mechanized face enhancing the upper limit for coal mining along the tendency and trend of coal seam by different mining speed of 6 m/d, 4 m/d and 2 m/d. draw the conclusion that enhancing the mining speed can alleviate the pressure of the working face ,improve the working face mechanical environment,and reduce the extent of the failure field.It provides the theory basis and reference for Fully-Mechanized face enhancing the upper limit for coal mining under similar conditions.
Study on Surrounding Rock Pre-Stressed Crossed Anchor Control Technology in Roadway with Large Mining Depth
Authors: Zheng Xi Gui , Zhan Qin Jian , Wang Bin
Published: June 2012

Based on the deep soft rock creep mechanism, according to the physical characteristics of bauxitic mudstone in ingate at the level of -1015 m of Kong Zhuang colliery, we solved the technical difficult problem of choosing anchor points of soft rock supporting roadway in ingate. Using high strength and low relaxation steel strand to reinforce by crossed anchor, in combination with the depth hole grouting technology, improve pressure-bearing capacity of wall rock in the ingate, safe passage and drainage pipe area. We analyze the stress distribution characteristics of rock mass, contrasting on the stress distribution at the end of partially grouted bolt and the rock mass. Practice shows that crossed anchor rock mass has triaxial compression over all, the bunch body has a single structure, and it is easily to be analyzed. We not only control the roof settling in the area of ingate is, but also solve the floor heave problem in safe passage and drainage pipe area.
The Similar Experimental Study on the Concentration Field in Construction Period of the Storage of Salt Rock in Solution Mining
Authors: Jiang De Yi , Qiu Hua Fu , Chen Jie , Ren Song
Published: June 2012

The Jin-tan underground energy storage of salt rock in Jiangsu Province as a demonstration project, Established a similar model experimental platform of concentration filed in construction period of salt caverns, which based on the similar theory of dimensional analysis. To analysis the concentration distribution and the concentration field variation in cavity. The study shows that: the brine concentration in the same horizontal plane is uniformly distributed beyond the boundary layer where has a higher concentration than other locations, but a continuous gradient distribution of brine concentration increases with depth in the vertical direction. In the vertical direction, the brine concentration gradient firstly increases and then decreases with the increase of the freshwater flow in the reverse circulation method. And in the vertical direction, the brine concentration gradient also firstly increases and then decreases with the increase of the distance between the two wash pipes in the reverse circulation method. Comparing with the reverse circulation method, the brine concentration gradient in the vertical direction is very insignificant with direct circulation. During the solution of mining of the salt cavity, the brine concentration increases as time goes on, and the rate of increase continues to decrease until the concentration field to stabilize.
Application of Y+L Ventilation to Gas Control on 3303 Mining Face
Authors: Zhang Xuan , Quan Zhen
Published: June 2012

Mine ventilation is one of the most fundamental measures preventing gas accumulation. Through analyzing the advantages and disadvantages of Y-type ventilation, the paper proposed and practiced Y+L ventilation after relevant study and investigation when traditional Y-type ventilation only could not solve the gas problem on workface of Hexi Mine, i.e. to adopt the technique of maintaining airway along roadway, arranging airway as the return airway on work face, and to dig the transportation roadway of the next work face n advance as the tail roadway of 3303 work face, so as to jointly form the Y+L ventilation pattern of the mining face. This method is applied to the gas control of 3303 work face.
Clean Mining Technology of Waste Not Discharged From Coal Mine
Authors: Zhang Dong Sheng , Dong Tao , Fan Gang Wei
Published: June 2012

In order to solve the problem of heaping waste in aboveground, a cleanly mining technique of waste not discharged from coal mine was proposed. It includes two key points as follows: one is waste separation underground; the other is mining technique with preset packing body of waste without coal pillars. After the waste from the coal mining face had been separated out, the waste was used to preset packing body of waste. It is able to decrease stress of mine hoisting. The technique has been successfully used in Gaozhuang Coal Mine.
Characteristics of "Three Zones" during Underground Coal Gasification
Authors: Liu Hong Tao , Yao Hong , Yao Kai , Chen Feng , Luo Guang Qian
Published: June 2012

According to the temperature, major chemical reactions and gas compositions, the gasification process along the tunnel of underground coal gasification is divided into three zones, i.e. oxidation zone, reduction zone and dry distillation zone. A model test in the laboratory was carried out by using large-scale coal blocks to simulate the coal seam. The characteristics of the “three zones”, and the relation between the temperature and gas composition were also quantitative studied. It provided the necessary basic knowledge for further studying the process of underground coal gasification, including predicting compositions of product gas, life-cycle analyzing, selecting optimistic control parameters and determining suitable gasification craft.
Experimental Equipment Study on Compression Resistance Performance of Explosives
Authors: Liu Lei , Wang Hanglong , Wang Xu Guang , Wang Guo Hua
Published: June 2012

Abstract:the domestic and foreign explosive workers who have carried on the massive research work on compression resistance performance of explosives, developed a series of experimental equipment which mostly limits to the qualitative study stage. Through design proposal optimization, explosion temperature，heat of the explosion theoretical calculation as well as the experimental equipment various parts parameter computations, the stress examination had determined finally quite reasonable parameters. This paper eventually developed a set of device which are reusable, less consumable, easy operation. The practice identified the method is an effective to test compression resistance of explosive.
Experimental Method Study on Emulsion Explosives under Hydrostatic Pressure in Models Blasting
Authors: Liu Lei , Wang Xu Guang , Yang Yi , Wang Guo Hua
Published: June 2012

Study on compression resistance of emulsion explosives can provide a theoretical basis for underwater blasting and deep-hole basting and development of emulsion explosives. Environment of deep water charge is simulated by a change of pressure of the micro-explosive device .The micro-explosive device was put in the reserved drill hole of mortar test block and applied rating pressure to explode, through fractal theory G-G-S lumpiness distribution function, which was used to date processing to study the fallen extent of explosion capability of emulsion explosives under hydrostatic pressure. The practice has shown that this is an effective new experimental method to study the fallen extent of explosion capability of emulsion explosives under hydrostatic through blasting effects.
Hydro-Geochemistry of Deep Aquifers in Coal Mines in Northern Anhui Province, China: Implications for Water Rock Interaction and Water Source Discrimination
Authors: Sun Lin Hua , Gui He Rong , Lin Man Li
Published: June 2012

Thirty-eight groundwater samples from three deep seated aquifers (the Quaternary, the Coal bearing and the Taiyuan Fm aquifers) had been collected from three coal mines in northern Anhui Province, China for analyzing their major ions, and the statistical methods (correlation, cluster and discriminant analysis) had been processed for evaluating the source of ions and relationship between aquifers. The results suggest that: (1) the chemical signatures of the groundwater are mainly controlled by dissolution of plagioclase, K-feldspar and calcite; (2) the aquifers had been mixed with each other, especially the mixing between the Quaternary aquifer and the Taiyuan Fm aquifer. Discriminant analysis has produced two functions and a diagram, which can be used for water source discrimination.
Janbu Method Application in Jianshan Iron Mine
Authors: Sun Wen Wu , Wang Yan Bing , Zhang Fei , Feng Le Zhen , Zhou Ying
Published: June 2012

We had the digital analysis study on side slope stability in order to deduce the calculation process of side slope safety factor with Janbu method and calculate the side slope safety factor of Jianshan iron mine, and put forward the effective management measures ,which achieved the ideal result
Mining Gassy Coal Seams with a Three-Entry Panel Layout
Authors: Xue Jun Hua , Xue Sheng
Published: June 2012

To address the issue of high gas emissions in mining gassy coal seams in underground coal mines, the concept of a three-entry panel layout with a retained goaf-edge gateroad and a “Y” type ventilation system is introduced in this paper. With the layout and ventilation system, distribution characteristics of methane concentration in the panel goaf is analyzed, technologies of gas drainage with boreholes drilled from the retained goaf-edge gateroad and into stress-relieved overlying and underlying seams are described, and an application case of such layout in a coal mine is also presented in this paper.
Numerical Analysis on the Slope Stability of the Multi-Step Waste Rocks Dump with Retaining Wall
Authors: Wang Ding , Liu Chang Wu , Xu Yu Hang , Zhou Jie Bin
Published: June 2012

In recent years, with the rapid development of highway, high-speed railway and other large cross-section tunnel engineering, a large number of waste rocks are piled up and induce various security issues which affect people's production and living environment seriously. The actual capacity of the LQS tunnel waste rocks dump has been far more than its design dimensions, and brings about a certain extent potential safety hazard to some expressway projects in Sichuan Province. Utilizing FLAC3D and its Mohr-Coulomb criterion establish 2D model, and analyzes displacements, and calculate its safety factor, estimate the slope stability and destructiveness of the waste rocks dump. The calculation results are coincide with the actual damage situation well. In order to improve the slope stability of LQS tunnel waste rocks dump, the influence degree of its wall height, moisture ratio, and slope ratio of safety factor will be analyzed, sequentially confirm the critical value of every factor, and find out the prominent factors. The numerical analysis on the slope stability of multi-step waste rocks dump with retaining wall will be the basis of similar sites.
Numerical Simulation of Preventing Rock Burst with Hydraulic Cutting
Authors: Cheng Yao , Ma Yu Lin , Zhang Yong Li
Published: June 2012

Rock burst become increasingly serious in deep mining. Pressure relief will be realized with hydraulic cutting in the coal seam, and rock burst could be substantial prevented. The finite element model of hydraulic cutting is established, the variation of stresses around the slot before and after hydraulic cutting are found by Ansys software. The results of numerical simulation show: The influence circle of differential pressure with hydraulic cutting is about 5 meters. In the circle the stresses fall down 81%. The pressure relief is best when the pitch of holes is 8 meters with multi-slot cutting. The surface high stress area is significantly reduced after slotting and the stress concentration zone transferred to the deep. Reasonably direction of cutting travel determined pressure relief, and the cutting distance could influence directly the dimension and scope of pressure relief. The simulation results provide a theoretical foundation and technical reference for preventing rock burst with hydraulic cutting.
Off-Site and Reverse Uncovering Coal Technology about Outburst Coal Seams Group
Authors: Wu Ai Jun
Published: June 2012

In view of the condition of driving roadway in the West Wing mining area in Pan Yidong mine: the -805m jitty and belt conveyor uphill would meet within the coal seams group, and the coal seams group will be opened successively at the two locations. According to uncovering coal difficulty, the method of off-site and reverse uncovering coal to be used to open the coal seams group. At first, opening the coal group in -805m jitty, and then excavating respectively coal seams group up or down in the opposite direction, finally the uncovering coal is finished. One-fourth times was reduced compared to the traditional plan of uncovering coal, achieving a win-win of good economic and security benefits.
Study on Gradual Deformation and Prediction Model of the Mined Overburden
Authors: Xia Xiao Gang , Yang Yun Feng
Published: June 2012

Based on the overburden three caving feature, the deformation of mining rock process was devided and the criterion of gradual transformation of each stages deformation were given. Then , combined the thin-plate theory, the differential models were derived for rock deformation in level and similar to level bured condition. The boundary condition of each models and exchange condition between different models were put forward and the gradual mechanics model was set up.The subsidence model before roof collapse was solved by Navier double trigonometric series and the deflection surface expression of rock deformation was put forword. At last, the reliability and practicality of the models was verified by engineering examples.
Study on the Supporting Technology of Complex Deep Coal Roadways
Authors: Liu Zhi Yang
Published: June 2012

Suffering from the effect of the high ground pressure, water spraying from roof surrounding rock or geological tactics such as faults or collapse columns, roadways used to have large deformation, even lead to caving accidents. Based on the supporting research of the above complex conditions, the supporting background of a typical roadway No.202 affected by high stress, water spraying and large faults is analyzed and the corresponding technology is put forward. In addition, the support experimental test is conducted on the roadway, and the observation results show that the convergence of both sides is controlled well, and abscission layer is little.
The Change Regularity of Abutment Pressure under Various Propulsive Distance in Coal Face
Authors: Dai Jin , Liu Xin Jie
Published: June 2012

The application of UDEC software helps to simulate the changing regularity of the front and posterior abutment pressure and the pressure in the goaf within the scope of propulsive distance 220m in the coal face. Incorporating the Origin software the simulation analyzed the changes and correlation of the three kinds of pressure. We can see that when the propulsive distance is within 60m the change of the front and pressure is the same to the change of the back abutment and with the increasing of the pressure the posterior abutment pressure reaches its peak first. When the propulsive distance exceeds 60m the pressure of caving gangue in the goaf begins to increase and share some of abutment pressure. Each time the main roof collapses the concentration factor and the location of the peak of the front abutment pressure will fluctuate. The concentration factor fluctuates between 2.04~2.41 and the location of peak fluctuate between 7m to 10m. With the propulsive distance increasing, the posterior abutment pressure will tend towards stability when the propulsive distance is 140 m. The goaf which experiences the change trend of low pressure -high pressure -reducing to raw rock pressure has three areas: depressor area, pressurization area and stability area. The stress depressor area which is in the range of 10 to 20 m exists every 20 to 30m in the cut-hole and the gangue compacting area.
Three-Dimensional Visual Modeling Technology and Application of Open Pit Mining Boundary
Authors: Yan Xiao Ming , Zhou Zi Long , Li Xi Bing
Published: June 2012

With mining depth and state-wide expansion in open pit mining, it is necessary to bulid a three-dimensional visual model of open pit mining boundary, which can be used in the analysis of pit slope stability, engineering decisions, geological analysis and production planning. In this paper, a three-dimensionla visual model reflecting the complex formation load and terrain conditions was built by collecting original open pit design and geological data. With this model, stability analysis of open pit can be obtained and theoretical basis for selection of design can be provided. In the specific prcess of modelling, the original information in the existing CAD mining topographic maps were be used fully and the mine topographic maps was imported into Surpac mining software. Surface digital terrain model can be obtained elevation assignmented by corrction processing of CAD linears and vector processing of measring point data. On this basis, by using MIDAS software and considering the requirements of the scope of computational space, a three-dimensional model can be obtained through Boolean cut operations. With this model, the real surface shape of open pit mining boundary can be reflected.