摘要
针对井下断层处地质条件差、勘探效率低、巷道支护稳定性差的不足,提出了一种新的井下过断层防护技术方案,通过采用瞬变电磁法实现对断层地质状态的精确监测,通过井下注浆加固和联合支护的方案提升了过断层巷道的支护稳定性。根据实际应用表明,新的过断层核心防护技术能够将井下地质勘探效率提升89.4%,将巷道过断层变形量降低67.2%。
Aiming at the disadvantages of poor geological conditions at downhole faults,low exploration efficiency,and poor roadway support stability,a new underground fault protection technology scheme is proposed,which can accurately monitor the geological state of the fault through the use of transient electromagnetic methods.Through the plan of underground grouting reinforcement and joint support,the support stability of the roadway crossing the fault is improved.According to actual applications,the new cross-fault core protection technology can increase the efficiency of underground geological exploration by 89.4%and reduce the deformation of roadways through faults by 67.2%.
作者
刘永峰
LIU Yongfeng(Sima Coal Industry Co.,Ltd.,Changzhi 046000,China)
出处
《煤矿现代化》
2022年第2期82-85,共4页
Coal Mine Modernization
关键词
过断层
瞬变电磁法
注浆加固
联合支护
crossing fault
incidental electromagnetic method
grouting reinforcement
combined support
