bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison Research of Low Carbon Economy Development Mode of the Large-Scale Coal Enterprises
Authors: Sun Xiu Li , Miao Pan , Zhang Jun Hua
Published: June 2012

With the rapid development of China's economy, a series of social problems such as energy crisis and global warming gradually have become prominent. In the consumption structure of our country, coal has the leading status. Therefore, achieving low-carbonation development of the coal enterprises is important for the whole society to realize sustainable development. On the basis of elaboration on low- carbon economy meanings and basic elements, this article analyzes the development models, like cleaner production, comprehensive utilization of resources, diversified development, industrial clusters, and low-carbon coal cities and hopes all of this would be useful for reference to China's coal enterprises.
Developing the Recycle Economy - A Strategic Choice of Sustainable Development
Authors: Huang Jia Yi , Huang Yi Hui
Published: June 2012

As we enter the 21st Century, various countries in the world are faced with many challenges, such as overpopulation, shortage of resources and environmental deterioration. Developing recycle economy is one of the important ways to realize sustainable development. The purpose of recycle economy is to insure circulation utilization of resources and positive conversion of ecosystem on the premise of keeping economic development. Its mechanism should be "Government instructs, Enterprise acts, Society participates, Markets operate". Enterprise is the subject of economy, so the development of recycle economy must be put into effect in enterprises. In this paper, how to advance enterprise to develop recycle economy by carrying out environmentally friendly manufacturing methods and the relationship between government and enterprise in Game Theory are discussed. The thesis also provides some suggestions for government to promote the development of recycle economy.
Effect of Tourism Development on Energy Consumption, CO2 and Economic Growth in China
Authors: Kuo Kuo Cheng , Liu Ming , Lai Sue Ling
Published: June 2012

This study examines the effect of tourism development on energy consumption, CO2 and economic growth in China over the period from 1981 to 2010. An extension of ARIMA model was performed to investigate the relationship between variables. Two principle test results emerge from this study. First, increases on visitors may largely give rise to GDP. On the other hand, increase on tourism receipts may result in greater energy consumption and CO2 emission to some extent as compared to number of visitors. However, the amount of effects from either tourism receipts or number of visitors to energy consumption and CO2 emission are limited. From an energy conservation and economic growth point of view, the results support the hypothesis of tourism-led economic growth in the China economy with relatively limited increase of energy consumption and CO2 emission.
Quantification of the Embodied Impacts of International Trade on Energy and Environment in China
Authors: Wang Di , Wang Ming Xin
Published: June 2012

Based on the input-output life cycle assessment method, the embodied energy consumption, air and water emissions of China's international trade in 2007 were estimated. The results showed that the embodied energy consumption of China's international trade in 2007 is up to 229.04 Mt, accounting for 8.62% of total energy consumption. The embodied Chemical Oxygen Demand, Ammonia Nitrogen, Sulfur Dioxide and Dust emissions caused by net exports accounted for 9.85%, 9.11%, 6.71% and 0.78% of the overall emissions in China, respectively. China’s export promoted energy consumptions and pollutant emissions significantly. Therefore, China should adjust its export strategy and structure to reverse the adverse effects on energy and environment caused by exportation.
Study of Population Migration in the Background of Climate Change
Authors: Chen Shao Jun , Cai Meng Sheng , Shi Ming Yu
Published: June 2012

In Hongsibao District, a dry area in central Ningxia, resettlement includes the three main types of government-dominated resettlement, resettlement by voluntary migration and involuntary resettlement arising from project implementation for drought relief. This study proposes corresponding population migration mechanisms by analyzing the three types of population migration and their features, and makes discussions on the mechanism of action of climate change factors on population migration in order to provide a reference for improving the ability of mankind to respond to early warnings of climate change, adapt to climate change and manage risks related to climate change.
Study on Agricultural Mechanization in Agro-Environment Impact
Authors: Lu Bing Fu , Zhou Yan Li , Han Wei Ping
Published: June 2012

This paper put forward the concept of elastic force of agro-environmental system, set up the evaluation model for elastic force of agro-environment system, and expounded systemically the relationship between agricultural mechanization and agro-environment. According to the result of evaluation and analysis on national agricultural mechanization and agro-environment, the environment-friendly new techniques of agricultural mechanization should be adopted in promoting rural sustainable development, which could make agricultural mechanization being compatible with agricultural environment, harmonizing with the nature in order to maintaining the stability of agro-ecological environment.
Study on Establishment and Application of Circular Economy Evaluation Index System for the Chemical Industry
Authors: Zheng Ji Liang , Huang Yi , Wang Zi Qiang
Published: June 2012

The chemical industry is the focus of circular economy construction, and the construction of evaluation index system of circular economy is an important work. In this paper, a circular economy evaluation index system that may be used for quantized evaluation for the chemical industry is established based on the previous research results, where the weight value of the index system is obtained by the AHP method. The rationality of the evaluation index system is verified through the case studies.
Study on Industrial Design Strategies for Environmental Sustainability
Authors: Xu Ping , Zhang Yong
Published: June 2012

The way users interact with products may strongly influence the environmental sustainability. It is significative to outline strategies from the perspectives of users. First,some fashional user_based design concepts were reviewd, and their shortcomings and disadvantages were futher analysed in today environmental sustainability context.Then taking into account of users behavior,emotion and concept impacts enacted throughout the use phase of products, a series of strategies were outlined,such as user-product relationship empathic design, service_based local common products design, edification design and participatory product redesign. These strategies will be helpful to prolong product lifecycle through establishing intimate emotion connection, reduce resource consumption through lowering the total amount of personal products,deeply change users’ daily behavior and enhance users’ environmental consciousness through educational function of product semiotic,and make users have a substantial role in product redesign to strengthen the reuse of the abandoned parts through open design and facilitating disassembly.
The Effect of FDI on Host Country's Environmental Pollution: Evidence from Chinese Cities
Authors: Wang Dong , Wu Zhang Lan
Published: June 2012

With the increasing global competition, people worried that most foreign-funded enterprises have comparative advantage in pollution-intensive products due to the relatively relaxed environmental regulation and lax enforcement in China. This study examines the relationship between the foreign direct investment (FDI) and local pollution in china. Our results find that a city received more FDI may be not lead to higher pollution. In fact, FDI have a beneficial effect on local environment. Policy-makers should be to attract more foreign investment that openness could improve development China's environment by increasing local income, introducing more energy efficient production technology, and increasing competition and diving out less efficient factories. This suggests that the market-oriented economic reform improve the environment.
Whether Economic Growth Deteriorates Environmental Quality? — Evidence from Major Cities in China
Authors: Liu Fei , Zhu Ji Xiang , Li Yong Hong
Published: June 2012

Recent studies about the relation between economic growth and environmental pollution are mainly focused on cross-country or the long-run change in an individual country, but give little consideration to the heterogeneity internal one country, which no one can afford to neglect. Making use of the data of 31 major cities from 2005 to 2010 in the case of China, this paper analyzes the economy-environment relation by employing Panel Data Model. The results indicate that there is an inverted N-shaped rather than the inverted S-shaped relation between the economic growth and the environmental degradation in the major cities, whereas the relation between the environmental pollution degree and the proportion of the second industry is positive and statistically significant. It is suggest that there is no uniform environmental policy to the different cities, and every city can develop its comparative advantage to increase the economy growth and improve the environmental condition at the same time.
Whether the Development Model of Baosteel Group is Sustainable
Authors: Yu Hua
Published: June 2012

This paper analyzes the history of Baosteel Group and draws the conclusion that the development model of Baosteel Group is not sustainable. Then it puts forward such inspiration that it is very important to keep independent innovation, seize the initiative of the industrial chain and be alert in external cooperation for sustainable development of Chinese enterprises.
Study on Correlative Income of Mining Resources in China
Authors: Ren Hai Bing , Fan Yong Long
Published: June 2012

The article proposed the concept of correlative income from mineral resources exploration and development and described connotation and function of that. It was held that correlative income from mineral resources exploration and development refers to all the correlative income and fees produced through the series processes of prospecting, exploration, mining, processing, and transportation of mineral resources. It analyzed and studied the source of correlative income from mineral resources exploration and development, showed the composition of it, deeply analyzed the generation and distribution of it, and offered the principle of it at last. The conclusion of the article could help to distinguish various incomes which come from the process of developing and utilizing mineral resources, and help to distribute income reasonably. Then, the ownership income of state could be clarified and safeguarded.
Agricultural Industry Cluster Sustainable Development Based on the Perspective of the Scientific Outlook on Development
Authors: Zhu Chun Jiang , Luo Ru Jiu , Ma Hui Min
Published: June 2012

Along with agriculture development, a variety of peoblems have risen which effect agriculture industry cluster development badly. How to use the new development model to solve these problems is a subject worthy of study. The Scientific Outlook on Development is an ideological weapon to guide agricultural industry cluster. So this paper proposes the ecological, harmonious and recycling strategic thoughts of agricultural industry cluster sustainable development based on the perspective of the Scientific Outlook on Development.
Analysis of Government Role in the Development of Rural Low-Carbon Economy
Authors: Guo Hong Yuan , Zhang Nan Nan , Cao Yong Li
Published: June 2012

This paper first defines the elements and meaning of rural low-carbon economy. On the basis of theoretical analysis, this paper then analyses the government role in the development of rural low-carbon economy, for example, government should organize and coordinate the development of rural low-carbon economy, should increase the investment of rural low-carbon economy, and should supervise rural low-carbon economy development as well. Last, the paper gives some suggestions for government to follow in the future work.
Analysis of Relationship of Environmental Geo-Technology and Urban Eco-Tourism Development
Authors: Guo Ying , Gao Yu , Cao Dong Bo , Pan Hong Bo
Published: June 2012

Environmental Geo-technology involves not only the ecology but also the basic theory of environmental economics, management, control and monitoring aspects, so it is the ultimate goal that closes to the service the strategic policy of sustainable development of human economic system. Eco-tourism is a new form of tourism which is using a sustainable development as its guiding ideology, and it is the construction of ecological city of Shenyang is an important aspect. The paper combined with the request of Shenyang’s detailed condition, and then given some suggestions to improve the protection measures of Ecological environment by using geo-technology so that it can lead eco-tourism of Shenyang to the road of sustainable development.
Assessing Income, Industrial Structure and Urbanization Impacts on Carbon Kuznets Curves in Beijing Area
Authors: Ding Juan Juan , Zhao Wen Jing
Published: June 2012

The Carbon Kuznets curves (CKC) were widely used to forecast the future trend and turning point of carbon emission. But some key factors which influence the carbon emission a lot were not taken into consideration. In this paper, industrial structure and urbanization were added as linear factors in the CKC and Beijing area was the research object. Three expansion equations, named industrial structure CKC (CKC-S), urbanization CKC (CKC-P) and double factors CKC (CKC-SP) , were put forward. The data was from 1980 to 2009. Finding indicated that an invented U-shaped relationship exists with GDP/capita and carbon emission made by per capita. The change of industrial structure and urbanization could affect the trend and turning point of carbon emission. For Beijing area, carbon emission made by per capita would reach the turning point after 5.5 years according to the CKC-SP, and the carbon emission made by per capita was about 2.43t. These Expansion equations also showed that more secondary industry output and more urban population would lead to a higher turning point. For Beijing area, the adjustment of industrial structure has little affection on emission reduction, other measures such as improving energy efficiency and reducing the emission from consumption activities should be taken to achieve the emission reduction targets.
Empirical Research on Ecological Efficiency and Development of Low-Carbon Economy in Blue Economic Zone
Authors: Song Ting Shan , Guo Si Liang , Zhou Guang Tao
Published: June 2012

The ecological efficiency issue of 17 cities in Shandong Province in 2010 has been analyzed empirically and assessed in this article by means of Super-efficiency DEA model and Three-period DEA model. With comparative analysis, the current ecological efficiency development of all cities in Shandong Peninsular has been demonstrated, and the reasons caused the deficient ecological efficiency have been, from three aspects including exogenous factors, external environment, and stochastic error, worked out sufficiently, which can help the government to make decisions with reliable foundations, so as to guarantee to successfully achieve the goal of development project of Blue Economic Zone.
Energy Consumption, Resource Utilization and Environmental Protection in Beijing - Practice and Challenges
Authors: Yang Yi Bo , Sun Li Wei
Published: June 2012

Due to alteration and degradation of the environment, governments and citizens of Beijing are gradually embracing the concept of sustainable development. The theory of circular economy is regarded as an important way to build a resource-saving and environment-friendly society, so it becomes emphasized by the government. This paper presents an overview of the current situation of the circular economy in Beijing, provides a brief discussion on the future challenges and makes a number of feasible suggestions. In the period of "The Eleventh Five-Year Plan", Beijing attaches great importance to the work of developing circular economy. It achieved a remarkable improvement in key indicators such as energy and water consumption, pollution emission, efficiency of resources utilization and ecological indicators. Industrial structure, energy consumption structure and resource utilization are optimized to some extent, and related support system of circular economy is initially established. There are still some challenges cannot be ignored, the shortcomings and the lack of technologies, recycling systems, laws, regulations and policies and social awareness and participation are regarded to be the major challenges in the future. Targeting the status and challenge of the development of circular economy in Beijing, and some suggestions are recommended.
Sustainable Human Settlement and Climate Change Adaptation in China
Authors: Wang Li Jun
Published: June 2012

A sustainable human settlement is a healthy environment to work and live in. The need is becoming obviously in the decline in environmental quality as well as global climate change. Climate change and related hazards are having impacts on human settlements causing major loss of life, social disruption and economic hardship. The unvalued nature of sustainable human settlement makes it difficult to incorporate the environment in the normal calculation schemes of rational market behavior. Linking of climate change adaptation with sustainable human settlement is important and starting to happen although there are significant barriers. Many settlements in China are at risk and need to adapt and reduce risk. Addressing the challenge of climate change must be established to meet the needs of providing a sustainable human settlement base on which to develop and implement public policies.
Tax Policies of how to Promote the Development of Low-Carbon Economy
Authors: Zhou Wei , Zhang Wei , Chen Ling
Published: June 2012

This article points out that it must rely on tax policy to create a low-carbon economy in China. To improve China's tax system to promote optimal allocation of resources is a priority means, but also is needed to promote economic and social development, and the harmonious development between man and nature.
The Emergence of Eco-Design in China in the ICT Sector
Authors: Puel Gilles , Liu Chao , Huang Dai Yue
Published: June 2012

This article presents the preliminary results of empirical research on the emerging practices of EcoDesign in the sector of Information Technology and Communication (ICT) in China. We show that the structuring of the organizational field of EcoDesign is under the constraint of external actor-networks, mainly European regulatory constraints. The central government, relayed by major exporting companies in the sector, has had to build an eco-system of EcoDesign that combines economic efficiency and incentive regulation both in order to achieve strategic goals and to meet the global environmentalist demand.
The Effects of Structural Characteristics of Low Seepage Sandstone Uranium Ore Rock on Permeability
Authors: Zeng Sheng , Tan Kai Xuan , Du Xue Ming , Li Chun Guang
Published: June 2012

It is great important for the development of China’s uranium mining to efficiently extract low seepage sandstone uranium ore rock. It is the objective of this paper to present the effects of the structural characteristics of the low seepage sandstone uranium ore rock on permeability. Samples of sandstone from a uranium mine in XinJiang province were used to carry out experimental research on permeability. These tests were carried out on ore rock with particle size and distribution characteristics determined by a homemade permeability test device. The research indicates that the sandstone uranium deposits may be classified as low seepage because the particle size falls within the range 0.1~1.6mm, that the distribution of particle sizes observed conforms to low seepage fractal characteristics, the permeability decreases when the value of the ore particle size distribution of fractal dimensions increases, and the permeability decreases with particle size decreasing, and that the decrease of the permeability is not a linear change, but is an obviously exponentially decreasing functional relationship.
On the Economic Climate of Sustainable Tourism Development in China
Authors: Han Li Jun
Published: June 2012

As an industry closely related with one's relaxation and entertainment, tourism is coming to its perfection. The sustainable development of our society and economy requires tourism to comply with the macro environment and achieve the sustainable development. To accomplish this goal, it is necessary for us to analyze the external environment of tourism, esp, the economic climate, to utilize the favorable factors within so as to promote the development of tourism and achieve the established goals.
Simulation-Based Study on the Relationship between the Car Queue Pass Time and the Distance between Cars after the Light Turns Green
Authors: Bian Zhi Cheng , Chang Dao Fang , Jiang Yuan
Published: June 2012

For the reason that drivers often act according to the car ahead, it’s possible that there is some relationship between the car queue start time and the interval of the cars after the light turns green. In this case, it may exist a rational interval with which the car queue can pass the crossroad fastest. Based on the collision avoidance model, a simulation program is proposed, in which the acceleration of cars is limited by the real characteristics of car movement. A corresponding experiment is then conducted. The result of the experiment shows that the rational interval is actually nonexistent.
An Improved Image Retrievaling Method Based on Moment Invariants
Authors: Wu Chun , Zhao Pan
Published: June 2012

Shape-based image retrieval is an important part of image retrieval. According to the shape of moment invariant features of image, a new method for shape based image retrieval is presented. Firstly the edges in the original image using Canny operator are detected, the moment invariants of the edge map are calculated, and the moment invariants as the shape features are automatically indexed. Then, the similarity metrics to accelerate the match are redefined. Finally, the aspect ratio was defined to improve the retrieval precision. Experimental results show that the new method can remove some irrelevant information related to shape in the original image and weaken its influence on the retrieval results to some extent. This new method is simple and efficient and it is of some practical significance. This image retrieval system for education has made a good search result.
Fuzzy Synchronization of Chaotic Systems Based on Genetic Algorithm
Authors: Wang Xiao Hua , Ao Dun , Wu Zhong Qiang
Published: June 2012

We consider the synchronization problem of chaotic systems with uncertainties. We apply the fuzzy method to solve this problem, and the parameters of membership function are optimized by genetic algorithm, so that we can get the appropriate values for those parameters, and improve the ability of fuzzy controller. We carry out the simulations of synchronizing Henon chaotic systems with uncertainties, and the results show the effectiveness of this method.
Information Technology-Based Smart Energy System
Authors: Feng Qing Dong , Wu Hong Yu
Published: June 2012

Abstract. This paper proposes China’s information technology-based smart energy system. The development in international and domestic energy industry is firstly analyzed in this paper. The definition, characteristics and architecture of the smart energy system is then presented. Smart energy system is featured with diversification, intensification, cleanness and lean management and its objective is to achieve total amount control of energy, green development, comprehensive transportation, intelligent configuration and energy savings.
Research on Intelligent Inspection Machine Based on Linear CCD
Authors: Zhang Jia Fang , Lu Zong Qing , Wang Zhao , Yuan Qing Ke , Wang Guang Kai
Published: June 2012

This paper introduces new equipment for injection liquid inspection. The Intelligent Inspection Machine is based on linear CCD. The inspection platform, holding device and rotating and abruptly stopping station of this equipment are introduced, and the operating principle is illustrated. Image preprocessing is demonstrated in details, including filtering, segmentation and the calculated of particles. The experiments demonstrated that the intelligent inspection machine for injection liquid inspection based on linear CCD is feasible.
Binary Sort Tree Visualization Demonstration System Design and Realization
Authors: Yang Xiao Bo , Chen Bang Ze
Published: June 2012

Binary sort tree is a special binary tree, can be used for sorting and searching area, realize the visualization has important significance. In this paper ,it is realized the visualization of binary sort tree by using object-oriented method and the features of complete binary tree, solve some problems when the method achieved.
Design and Realization Based on SAR Image Target Model Base
Authors: Yang Guang , Wang Xiao Juan , Zhang Jian Feng , Li Xin , Wang Shou Biao , Ye Yi , Tong Tao
Published: June 2012

The paper have made a preliminary exploration about the establishment of SAR image target model base on the guidance of model base theory and on the basis of study evolution on SAR image target recognition. The design have made SAR image target model base management system successfully within the platform of Visual Studio 2005 and have studied on the establishment method of SAR image target model base.
Research on Construction of the Mutually Supportive Network Using a Spring-Water Spots
Authors: Nanba Reiji , Takahashi Masakazu
Published: June 2012

In this research, we have verified whether spring-water spots have what it takes to be the core of the mutually supportive network. Based on this verification, we have evaluated whether spring-water spots can become the foundation of a mutually supportive network. The above-mentioned findings show us that elderly persons visit spring-water spots at their own initiative, and they can build better and cooperative relationships with other visitors. Therefore, it is highly probable that spring-water spots have sufficient qualities to serve as the core for a mutually-cooperative network.
Weighted-Correct Empirical likelihood for Linear EV Models
Authors: Jiang Yu Ying , Zhu Xiao Feng
Published: June 2012

The empirical likelihood inference based weighted correction in linear EV model with missing responses is studied. A weighted-correct empirical likelihood method is developed. It can be shown that the weighted-correct empirical likelihood ratio is asymptotically standard chi-square. The results can be used directly to construct the asymptotic confidence regions of the unknown parameters. The estimation procedure is relatively simple and the estimated efficiency has been greatly improved.
Evaluation Method of Coal Mine Safety Based on Evidence Theory
Authors: Xu Gang , Ding Yang , Zhang Tian Jun
Published: June 2012

Coal mine safety assessment is an important ways for identification and elimination of danger in coal mine production systems. This paper introduce D-S evidence theory in evaluation of coal mine safety to solve the uncertainty problem of randomicity and faintness in evaluation of coal mine safety. The evaluation model of coal mine safety is set up based on evidence theory and the detailed arithmetic of evidence theory is brought forward, and according to some decision making rule the Chaohua Coal Mine has been evaluated. The results show that the model can solve the problem of uncertainty preferable and evaluation results with more accuracy and reliability.
Hydrogeological Structure Model of the Aquifer in Wushan Mine Based on GMS
Authors: Zhang Xi , Chen Zheng Hua , Yu Shao Wen
Published: June 2012

There has been a wide range of applications on establishing hydrogeological structure model in nearly horizontal strata. However, application of GMS on hydrogeological structure model in intruded rock-occuring region is rare. The purpose of this study is to establish the hydrogeological structure model with GMS software in Wushan Copper mine in Jiangxi province and explore the application of this model in rock-occuring region. The results indicate that: (1) It's feasible to construct hydrogeologic structure model in intruded rock-occuring strata areas, in which intruded rock’s Horizon ID is set as 7 and inserted between Q and T1d2-T2j strata in Wushan mine ; (2) The model clearly reflects spatial structure relationship among aquifers; (3) Visualization model can depict split and combination of aquifer flexibly, rotation of any section and any direction, cutting section and other functions, and related geological and hydrogeological information.
Research on the Dynamic Deformation Characteristics of Tailings Silt in Zhuziqing Tailings Dam
Authors: Xie Jian Bin , Liu Wen Lian , Shi Lin Hua , Zhang Guo Hai , Zhang Jie
Published: June 2012

In this paper, it has been studied that types and mechanical properties of tailings silt in Zhuziqing tailings dam based on the Zhuziqing tailings’ deposition characteristics, particles size distribution test, physical and mechanical properties test. Then it has been studied subsequently by the dynamic triaxial test, wave velocity test and standard penetration test for tailings silt that the dynamic characteristics, dynamic strength and vibration liquefaction of the tailing silt. Results show that the tailings silt in tailings pond is graded well. Under the condition of isotropic or anisotropic consolidation, dynamic shear modulus of tailings silt increase as the dynamic shear strain decreasing and increase as the increase of confining pressure or consolidation ratio. But the variation law on damping ratio of tailings silt is just opposite to that of dynamic shear modulus. Results also show that there is more liquefied possibility over the seventh sub-dam in the tailings dam, and the liquefied possibility position locates at the place from new sub-dam to deposited beach in tailing pond.
The Application of Bolt-Mesh-Anchor Combined Support in Soft Rock Roadway
Authors: Wang Guang Hong , Wang Zhen
Published: June 2012

soft rock; parameter; bolt-mesh-anchor support; ground pressure.
The Influence of Mining Height on the Height of Water Flowing Fractured Zone
Authors: Zhang Ming , Ning Jian Guo
Published: June 2012

Under the background of the hydrogeology conditions of the first working face of 11 coal seam in LuXin coal mine, theoretical formula prediction and numerical simulation were used to research the influence of mining height on the growth altitude of water flowing fractured zone. According to the requirement of the minimum thickness of waterproof coal pillars, the reasonable mining height was confirmed to be 3m. It was proved by similar material simulation that the maximum height of water flowing fractured zone was about 39.5m when the mining height is 3m, which was consistent with results of numerical simulation, and the thickness of protective layer was 23.5m, which ensured the safety of mining.
Effects of Microbial Degradation over Heavy Oil and Oilfield Test
Authors: Jiang Zhao Yong , Zhang Ting Shan , Chen Xiao Hui , Lan Guang Zhi
Published: June 2012

Heavy oils are abundant in resins and asphaltenes, and they have the characters of high freezing point, low flowing ability, difficult oil recovery and high recovery cost. Microbial degradation can effectively improve the properties of heavy oils and enhance oil recovery ratio. According to distinctive properties of heavy oils from different oilfields, identical microbial assemblies are sifted and incubated. Then the assemblies are used to degrade the heavy oils in oilfield. The results indicated that microbes selected could degrade resins and asphaltenes in heavy oils. Oilfield tests in Qinghai and Xinjiang Oilfield proved that microbial degradation is evident in enhancing recovery ration and is feasible and economical in heavy oil exploitation.
Open-Pit Mine Fine DEM Model Establishment and Updating
Authors: Xu Ai Gong , Cui Yang , Sui Xin
Published: June 2012

In view of open-pit mine complex special terrain, to improved method of constructing triangulated irregular net and combined with the extended boundary, that can remission the phenomenon that steps were flattened and the problem of inefficiency mining area model update. Using constrained triangulated irregular net once generation algorithm, through extraction of spatial data, establish topological relationships and spatial indexing, eventually build a constraints of triangulated irregular net within the boundary constraint line. Combining extended boundary with the triangulated irregular net generated algorithm, can realize the establishment partial model as well as partial and overall model splicing. Thus enhanced the efficiency of the mining area overall model updating.
Risk Assessment of Tailings Pond Based on Triangular Fuzzy Theory
Authors: Pan Ke , Dong Yang
Published: June 2012

The risk evaluation index system of tailings pond is established on the basis of the characteristics of tailings pond and the requirements of laws in China.To make up for the deficiencies of the present index weight determined methods and many risk assessment methods, this article presents a risk assessment methodology based on the Fuzzy Sets Theory, which is an effective tool to deal with subjective judgement.The proposed methodology incorporates knowledge and experience acquired from many experts. The weight of the indexes are considered two risk factors: risk probability, risk impact. Triangular fuzzy theory as the mathematical background is used in the paper to solve the problem of subjectivity and uncertainty to determine index weights and index values. The proposed method is applied to assess a certain tailings pond in Benxi. The most notable differences with other fuzzy risk assessment methods are the use of an algorithm to handle the inconsistencies in the fuzzy preference relation. The result indicates that this method used is feasible and rational. The work specified in this paper can be as reference to the evaluation work of the tailings pond in China.
Analysis on Key Strata’s Subsidence in Paste-Like Filling Face
Authors: Hao Jian , Shi Yong Kui , Liu Kuan
Published: June 2012

Using theoretical analysis and actually test research to analyze stress condition of filling body and average subsidence of the key strata, analysis shows that the average vertical stress in filling body was about 15Mpa when entering into stable state, which is equal to the primary stress, 13.75Mpa. The filling body could tighten the roof well and the filling body can support full weight of the overlying strata. The limestone, thickness of 5.3m, above the 81006 working face is the key strata of mining stope. On the interaction between ground pressure and the supporting force of filling body, the whole key strata subsided about 98.64mm on average theoretically, as the height meter monitored, the subsidence value of key strata was 108mm on average, conforms to the theoretical value, which proves the filling effect was good. At the early stage after filling, the roof subsided relatively faster as the filling body had not coagulated completely and the strength was lower. At this stage the roof was not tightened enough with the filling body, it subsided relatively faster in some certain limited space. After a while, the limestone, the key strata of mining stope, became stable for a short term, and then it would continue to subside until being stable under the disturbance of the high layer, because the movement of lower layer created some space for high layer.
Application of Weighted Moving Average Model on the Pre-Warning of Coal and Gas Outburst
Authors: Deng Ming , Liu De Fang , Chen Qin Hua
Published: June 2012

By defining and studying the time series of gas emission concentration (which was called G series in the paper), weighted moving average (WMA) model for pre-warning of coal and gas outburst was developed. The long & short-term trend curved lines of G series were drawn with the data of “3.30” coal and gas outburst of a coal mine. The results indicate, at normal production periods, coal body containing gas kept relatively steady, the gas content curved line, and long & short-term trend curved lines all changed mildly. Before occurring of outburst, some abnormal variations were found, including roadway body broken, gas energy released obvious increase or fluctuation of gas emission concentration, the gas content curved line passing through moving average curved line, long-term and short-term trend curved lines breaking through each other. The result of this study can be selected as the precursors to pre-warning coal and gas outburst.
High Strength Combined Support Technology in Deep High Stress Soft Rock Roadway
Authors: Ma Nian Jie , Zhao Zhi Qiang , Zhao Hua , Jiang Li Shuai
Published: June 2012

In order to solve the serious damage and repeat revision problem of high stress soft rock roadway in deep -950 level of Tangshan coal mine, based on the theory of the maximum stress level, together with the actual measurement of geostress and the laboratory mechanical parameters of rock-core and computer numerical simulation, the high strength combined support technology and supporting parameters are determined and the engineering test has been done. The engineering test results show that the parameter determination of high strength combined support technology, which based on the actual measurement of geostress, can effective solve the support issue of high stress soft rock roadway and provide useful experience for similar engineering problems.
Migration Law of Mesozoic Qaidam Basin Depocenters
Authors: Wang Ping Li , Lv Da Wei , Liu Hai Yan , Zheng Xue , Lv Yu Lin
Published: June 2012

According to stratigraphy and distribution features of the Qaidam Basin, and further the formation and migration of it’s depocenters, it is considered that the Middle-Upper Triassic were mainly sags scattered among the Qilian Mountains, the Alabasitao Mountains and the Kunlun Mountains; the Early Jurassic depocenters were located mainly in Lenghu depression and Yiliping sag at the northwest of the basin; several Middle Jurassic depocenters distributed from the northwest to the southeast of the basin along Sertengshan-Yuqia near front of the Qilian mountains; the Late Jurassic-Cretaceous depocenters moved east and south. The basin had been larger since the Middle Jurassic, and the sedimentary facies changed from semideep-deep lacustrine of the Early-Middle Jurassic to near-source variegated fluvial-lacustrine of the Late Jurassic and brownish red lakeshore of the Early Cretaceous.
Numerical Simulation of Gas-Water Dual Media in the Process of Coal Seam Hydraulic Extrusion
Authors: Xu Shuo , Wang Bai Shun , Zhang Xiang
Published: June 2012

Assuming that the flow of water and gas in the coal seam fracture system to follow Darcy flow law, according to multiphase fluid flow mechanics and porous media fluid mechanics theory, this paper establishes gas-water dual media in the coal seam hydraulic extrusion coupled seepage model. Make use of this model simulates the main technical parameter injection pressure of the coal seam hydraulic extrusion, and compared to actual injection pressure of Huai river mining area, the results are in agreement. This model provides a reference to optimize the main techinical parameters of the coal seam hydraulic extrusion.
Pollution Analysis and Control of Production Process in Metal Mine
Authors: Jiang Yong Bo , Xu Jian Lin , Wang Jia , Xi Guo Qiang , Niu Lei , Zhang Yu Fan , Ran Fen
Published: June 2012

With the increasing growing of metal mine exploitation degree and the developing of modern metal industry, the environmental pollution of production process in metal mine more and more gets the attention of people. Accord to the production technology of metal mines, this paper analyses the reason of environmental pollution, concludes the existent pollution factors and their harmfulness and finally discussed technology measures of treating and controlling for environmental pollution in production process of metal mine.
Quantum Chemical Application in Inhibitor Suppressed the Spontaneous Combustion of Coal
Authors: Dai Feng Wei
Published: June 2012

Coal spontaneous combustion needs to have enough oxygen and heat, on the one hand, water salts inhibitor can isolate from coal exposure to air; on the other hand, water salts inhibitor interact with active groups in coal to form complex, increase the stability of coal and boost the heat of spontaneous combustion of coal. This paper has made use of quantum chemical calculation’s software Gaussian 03 to calculate the complex what coal’s active groups and Ca2+ inhibitor interacted to form, and research the mechanism for inhibitor suppressed the spontaneous combustion of coal.
Relationship between Methane Emission and Strata Behavior at Island Coal Face
Authors: Zhai Xin Xian , Wang Fu Lin
Published: June 2012

According to the practical conditions of the island coal face in No.2 Coal Mine of Pingdingshan Coal Company Ltd., China, the strata behaviors and methane emission were monitored and their two relationships were analyzed. The results indicate that strata behavior at coal face affects its methane emission rates at coal wall and goaf，which the quantity of methane emission rate at coal face is largely increasing after main roof weighting. So through the monitor of periodic roof weighting time, larger methane emission rate at coal face can be predicted. Then the related methane control measures can be taken timely.
Research on Forecasting of Airflow Temperature in Heading Face Based on the GA-BP Neural Network
Authors: Zhang Xiang , Wang Bai Shun , Xu Shuo
Published: June 2012

In order to solve the problem of forecasting airflow temperature in heading face, a new model of forecasting airflow temperature in heading face with Matlab programming is built on the BP neural network model, making use of genetic algorithms to optimize the initial weights and thresholds of the network. According to the analysis of test carried out in a coal mine in Huainan, the results show that the model of fast convergence and high prediction accuracy is one of the most effective ways of forecasting airflow temperature in heading face.
Research on Technology for Preventing Spontaneous Combustion of Coal
Authors: Tian Zhao Jun , Li Xue Liang
Published: June 2012

A primary analysis is made in technology for preventing spontaneous combustion of coal to address the risk of safety in production of coal mine for spontaneous combustion of coal. The fire prevention effect and principle of fire per-venting technology were introduced in this paper, especially three phase foam and foamed gel were introduced in emphasis.
Study on Discrimination and Parameter Selection of Weighted Forecasting Model in Safety System
Authors: Lv Tao , Ye Yi Cheng , Jiang Ying , Zhou Qi
Published: June 2012

According to the analysis of the sum of squared residuals (SSE), this paper have defined the discriminant function and SSE change rate and discussed the discrimination standards and parameter calculation method of weighted forecasting model. Based on the balance of overall SSE and partial SSE, the parameters and forecasting model can be calculated by the value scope of SSE change rate. Through the discriminant and analysis of the mining safety incident weighted forecasting model, the derived model can have a high recent forecasting accuracy, thus it can provide reliable basis for safety management decision making. Discriminant function and SSE change rate have extensive applicability and can be used as a discrimination standard of the security system prediction model.
Study on Pressure Sensitive Effect of Permeability of Raw Coal with Containing Gas and Low Permeability
Authors: Tang Jian Xian , Yao Jun Yao , Deng Tao
Published: June 2012

Based on the low permeability raw coal samples of coal seams of Daichiba coal mine of Guangwang group, we study the change of permeability under different stress states by a self-developed three-axis penetration device. It is proved by experiments that the permeability of coal sample increases rapidly along with the growing of the pressure at the procedure of loading at lower actual stress levels whose rules of changes is the function of negative exponent. In the process of unloading, rate of permeability increase slowly with the reduction of effective stress. It will greatly improved when the effective stress drops to a certain level, and this conformed to power function law. As the influence of coal seam gas permeability solid coupling factors is very complex, the normalized treatment for the factors has done by defining pressure-sensitive effect coefficient of coal samples permeability. Based on the results of the test to establish the relationship between pressure sensitive effect index and effective stress, this relationship reflects the trend of the coal sample permeability changes in the effective stress. And derive a functional relationship based on the coal sample of the pressure-sensitive effect index of permeability and effective stress.
Study on the Flow Numerical Simulation of Jet Ventilation in Multi Tunnel Excavation
Authors: Li Xiao Feng , Li Qing
Published: June 2012

Pressed ventilation in heading face is actually turbulent jet ventilation. In the blind drift, the air ducts are usually laid on one side of the drifting tunnel forming the wall-attached jet along the side of the tunnel and in order to dilute and pour out harmful gas and dust, and create an backflow at the same time, the airflow of the ventilation jet must reach at the head of the tunnel. Therefore, the forced ventilation in heading face is actually restrained wall attached jet ventilation in confined space.
Summary on the Technology of Coalbed Methane Exploitation
Authors: Chen Jie , Jiang De Yi , Yuan Xi , Guo Ping , Qing Hu
Published: June 2012

Coalbed methane (CBM) is a clean energy, especially the grim situation of the current international rapid economic development, the growing shortage of energy, environmental pollution and mine safety, making the production of CBM effective rational exploitation became more urgent important. This article describes the current technology of CBM exploitation, and comments the advantages and disadvantages of the main CBM exploitation methods. And it is also introducing several new techniques and the most development potential of the CBM exploitation method. It will provide a useful reference for the sustainable development of China's CBM exploitation.
Technology of Strip Gas Pre-Drainage with Boreholes along Coal Seam from Front Traverse
Authors: Chen Li Wei , Chen Jin Chao
Published: June 2012

In order to improve the heading speed of the seam gateway and mitigate the problem of mining maladjustment in high-gas mines and coal and gas outburst mines which are almost low permeability, highly-gas content and it is difficult to eliminate the gas-outburst dangerous by the conventional pre-drainage technologies in a short period. The paper puts forward the view of strip gas pre-drainage with boreholes along coal seam from front traverse of the rock roadway over the seam roof, which can greatly save the time of gas pre-drainage to eliminate gas outburst dangerous by drilling and gas pre-drainage simultaneously for the trips between two traverses. The test results showed that the ratio of roadway driving to gas pre-drainage were increased from 0.31 to 3.6,the speed of driving increased from 50m to 105m per month and the time of roadway drilling and blasting heading per hundred meters from78 days reduced to 19 days. So this technology can greatly mitigate the replacement contradiction of mining and roadway driving.