煤田地质与勘探2001，Vol.29Issue(3)：1-4,4.
断层对顶板稳定性影响相似模拟试验研究
Influence of faults on coal roof stability by physical modeling
彭苏萍 1孟召平 1李玉林2
作者信息
- 1. 中国矿业大学资源开发工程系,
- 2. 煤炭科学研究总院西安分院,
- 折叠
摘要
Abstract
Through simulation test of similar materials,the distribution of deformation failure and underground pressure with high-angle faults of different dip direction are analyzed during coal mining operation.The results indicate that roof rock-mass in fault zone and its influential range is broken and with poor stability by activation of fault after coal mining,so the distance of periodic weighting decreases and the caving zone increases,particularly in the footwall of fault.When working face is mined about 22.5 to 30.0 m to the fault,the abutment stress ahead of working face obviously increases,coal seam is crushed,and the peak value of abutment stress migrates to the inside of rocks(coal)with reduction of distance away from the fault.Compared with non-fault,the abutment stress of the foor rock mass decreases after passing the fault.关键词
断层/煤顶板稳定性/相似模拟试验分类
天文与地球科学引用本文复制引用
彭苏萍,孟召平,李玉林..断层对顶板稳定性影响相似模拟试验研究[J].煤田地质与勘探,2001,29(3):1-4,4.
