摘要
根据显德汪煤矿三维地应力测量数据,利用3D-σ程序模拟了不同水平煤层的开挖效应,计算了各水平回采后围岩应力、位移和破坏区的分布状况,分析了9号煤层底板变形破坏规律,得到了煤层底板最大破坏深度计算公式.显德汪煤矿9号煤层底板最大破坏深度为9 15m.
According to the data of insitu stress measurement in Xiandewang Coal Mine,by usage of 3D-σ program, simulated the dig effect at the different level, calculated the stress and displacement of the surrounding rock and distributive state of the fracture area after extraction at the different level. The influence regularity of coal seam floor was analyzed, the equation of the coal seam floor's failure depth was provided. It is 915 m that the most data of No9 coal seam floor's fracture in Xiandewang Coal Mine.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2003年第2期121-125,共5页
Journal of China Coal Society
基金
河北省2001年科学技术研究与发展指导计划项目(01212209)
关键词
显德汪煤矿
煤层
底板
地应力
开挖效应
围岩
Xiandewang Coal Mine
coal seam floor
stress measurement
seam floor's failure depth
