Study on the Subsidence Factor of Strata & Surface Movement Caused by Coal Mining
Coal seam overlying strata are mainly made of sedimentary rock and alluvium. Because of the difference in diagenetic process, mineral constituents and sedimentation thickness, the volume of subsidence basin in overlying strata will change with stratas compression, expansion and bed separation during strata movement. So a new modification model based on probability function method has been put forward, that is, rock mass flat stratification, isotropy in horizontal direction and subsidence basin volume varying with depth. Based on above assumptions, a new subsidence-factor formula of strata and surface movement has been derived and the relationship between subsidence factor and mining depth, mining area and lithological characters has been analyzed using the new formula.
strata and surface movement subsidence factor underground mining overlying strata
LIAN Chuanjie XU Weiya WANG Ge
Department of Resource & Civil Engineering, Shandong University of Science & Technology, Taian,27101 Research Institute of Geotechnical Engineering, Hohai University, Nanjing, 210098, China Department of Resource & Civil Engineering, Shandong University of Science & Technology, Taian,27101
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
2814-2817
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）