The Experts below are selected from a list of 49203 Experts worldwide ranked by ideXlab platform
Donglin Cai - One of the best experts on this subject based on the ideXlab platform.
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Effect of protective Coal Seam mining and gas extraction on gas transport in a Coal Seam
International Journal of Mining Science and Technology, 2016Co-Authors: Banghua Yao, Jianping Wei, Donglin CaiAbstract:Abstract A gas–solid coupling model involving Coal Seam deformation, gas diffusion and seepage, gas adsorption and desorption was built to study the gas transport rule under the effect of protective Coal Seam mining. The research results indicate: (1) The depressurization effect changes the stress state of an overlying Coal Seam and causes its permeability to increase, thus gas in the protected Coal Seam will be desorbed and transported under the effect of a gas pressure gradient, which will cause a decrease in gas pressure. (2) Gas pressure can be further decreased by setting out gas extraction boreholes in the overlying Coal Seam, which can effectively reduce the Coal and gas outburst risk. The research is of important engineering significance for studying the gas transport rule in protected Coal Seam and providing important reference for controlling Coal and gas outbursts in deep mining in China.
You Cheng - One of the best experts on this subject based on the ideXlab platform.
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Assessment System of Coal Seam Gas Distribution State Based AHP
Applied Mechanics and Materials, 2014Co-Authors: Yin Cheng, Shan Feng, You ChengAbstract:Coal mine gas accidents impact the safety production of Coalmine, and Coal Seam gas distribution studies can be effective in preventing Coal mine gas accident. Coal Seam gas distribution affected by many factors, current research is limited to how a single factor impact Coal Seam gas distribution, but lack a systematic research. We proposed an assessment system of Coal Seam gas distribution on the basis of measured parameters that combined with storing, geology and working conditions of Coal Seam. We can effectively integrated assessing Coal Seam gas distribution state through this assessment system, and then guiding mine gas prevention and control work.
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3D Visualization of Coal Seam Gas Distribution State
Applied Mechanics and Materials, 2014Co-Authors: Yin Cheng, Shan Feng, You ChengAbstract:The monitoring of gas distribution state of Coal Seam could efficiently prevent gas accidents in Coal mine, but the currently researches are mostly focus on qualitative assessments. Through the three-dimension character analysis of gas distribution state of Coal Seam, we could build a three-dimension model of gas distribution state of Coal Seam, and then make its visualization through the simulation of computer. It makes the gas distribution state of Coal Seam more intuitive. This study could make the analysis of gas distribution state more scientific and provides a three-dimensional visualization platform for the prevention and control of gas, reducing gas accidents.
Hongyan Li - One of the best experts on this subject based on the ideXlab platform.
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Variation in gas drainage rate from a Coal Seam during mining
International journal of mining science and technology, 2012Co-Authors: Gang Li, Qingxin Qi, Hongyan LiAbstract:Abstract Gas flow patterns during draining of gas from a Coal Seam during mining are discussed. The Coal Seam is treated as a dual medium with both pores and cracks. The seepage, diffusion, and desorption processes are treated using a gas flow equation that describes flow around drill holes. MATLAB is used to solve the differential equations. The permeability tracer test results from a mined Coal Seam are used to study the variation in gas drainage from a Coal Seam during mining. The results show that mining can increase the permeability of a Coal Seam, which then increases the gas drainage. There are inflection points in this variation over time. A close relationship between this variation and the rate of change in Coal Seam permeability is observed.
Banghua Yao - One of the best experts on this subject based on the ideXlab platform.
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Effect of protective Coal Seam mining and gas extraction on gas transport in a Coal Seam
International Journal of Mining Science and Technology, 2016Co-Authors: Banghua Yao, Jianping Wei, Donglin CaiAbstract:Abstract A gas–solid coupling model involving Coal Seam deformation, gas diffusion and seepage, gas adsorption and desorption was built to study the gas transport rule under the effect of protective Coal Seam mining. The research results indicate: (1) The depressurization effect changes the stress state of an overlying Coal Seam and causes its permeability to increase, thus gas in the protected Coal Seam will be desorbed and transported under the effect of a gas pressure gradient, which will cause a decrease in gas pressure. (2) Gas pressure can be further decreased by setting out gas extraction boreholes in the overlying Coal Seam, which can effectively reduce the Coal and gas outburst risk. The research is of important engineering significance for studying the gas transport rule in protected Coal Seam and providing important reference for controlling Coal and gas outbursts in deep mining in China.
Yin Cheng - One of the best experts on this subject based on the ideXlab platform.
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Assessment System of Coal Seam Gas Distribution State Based AHP
Applied Mechanics and Materials, 2014Co-Authors: Yin Cheng, Shan Feng, You ChengAbstract:Coal mine gas accidents impact the safety production of Coalmine, and Coal Seam gas distribution studies can be effective in preventing Coal mine gas accident. Coal Seam gas distribution affected by many factors, current research is limited to how a single factor impact Coal Seam gas distribution, but lack a systematic research. We proposed an assessment system of Coal Seam gas distribution on the basis of measured parameters that combined with storing, geology and working conditions of Coal Seam. We can effectively integrated assessing Coal Seam gas distribution state through this assessment system, and then guiding mine gas prevention and control work.
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3D Visualization of Coal Seam Gas Distribution State
Applied Mechanics and Materials, 2014Co-Authors: Yin Cheng, Shan Feng, You ChengAbstract:The monitoring of gas distribution state of Coal Seam could efficiently prevent gas accidents in Coal mine, but the currently researches are mostly focus on qualitative assessments. Through the three-dimension character analysis of gas distribution state of Coal Seam, we could build a three-dimension model of gas distribution state of Coal Seam, and then make its visualization through the simulation of computer. It makes the gas distribution state of Coal Seam more intuitive. This study could make the analysis of gas distribution state more scientific and provides a three-dimensional visualization platform for the prevention and control of gas, reducing gas accidents.