Research on Parameters of Protective Coal Pillar of Buildings in Deep-lying Mining
With mining depth increasing continuously in our country, the problems about strata and ground movement are becoming more complicated. Meanwhile, it brings new prediction and controls problems. In deep mining design, if parameters of strata movement and design method are the same as the shallow mining, the size of protective coal pillar will be surely increased, and mining recovery ratio is influenced. Based on analyzing the problems in deep-lying conditions at present, its changing principle along with geology mining conditions was probed, and its calculation formula was established in deep-lying. In a mine, parameters of coal pillar for protection of buildings in deep-lying mining is not constant, but complicity nonlinear relationships changing with mining depth, the ratio of mining depth to thickness, coal seam dip angle, and etc. Finally parameters of rationalization are verified with example, so theory basis is provided with for designing coal pillar to protect buildings (structures).
deep mining protective coal pillar of buildings mining depth angle of draw
Chen Junjie Zou Youfeng Guo Wenbing
School of Survey and Land Information Engineering, Henan Polytechnic University Jiaozuo 454003, Hena School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
209-212
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）