Experimental Research on the Variational Characteristics of Vertical Stress of Soft Coal Seam in front of Mining Face
Permeability of coal seam is extremely sensitive to the in situ stress loaded. The techniques of Pressure relief have been proved significantly effective in practice to improve the gas permeability and the gas extraction rate to the soft coal seam. It is very necessary to make clear of the variational characteristics of the stress distribution in front of coal mining face with the production process. The vertical stress values of the top and bottom layer of the coal seam at different distances in front of the coal face are respectively measured, and the corresponding curves of the vertical stress variation along the mining direction have been obtained. According to the research conclusions in this paper, some available technical measures of Pressure relief at different distances and different layers of soft coal seam in front of mining face are expected to make and to put into practice. The research methods and correlative data included in this paper also can be referred to conduct some further and deep-seated exploration to get new theories and practical techniques for the gas drainage of the soft and low permeability coal seam.
Soft coal seam Mining face Vertical stress distribution Layered characteristics Experimental research
ZHANG Rui-lin WANG Zhi-jun CHEN Jian-wei
School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, 454003, China Jiaozuo Coal Company o Henanf Coal Chemical Industry Group Co., Ltd., Jiaozuo, 454000, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
984-990
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）