岩土力学2011，Vol.32Issue(10)：3053-3057,5.
覆岩中断层活化突水的力学分析及其应用
Mechanical analysis of fault activation water inrush in over burden rock and its application
摘要
Abstract
According to statistics, the eighty percent of water inrushes and submerged well accidents were induced by the faults in China. Most of them were induced by the fault activation affected by the workface advanced in non-water-transmissible faults under the condition of original geology. Owing to the need of safe production and water-preserved mining, the activation and water inrush of faults in overburden rock due to the advance of workface were analyzed with mechanics. The mining methods of both preventing fault activation water inrush and water-preserved mining were researched. The fault activation criterion was deduced by the Mohr-Coulomb failure criterion. The calculating formula of critical obliquity and the critical mining depth of the fault activation were deduced. The calculating formula of critical advanced distance was deduced in activating of the fault for the interval mining method adopted. The results show that the failure form of the fault has prodigious relation with the obliquity of fault. With the increase of fault obliquity, the failure form of fault show successively: simultaneity failure of the fault with overburden rock in advancing of the workface, shear failure and tension failure. The more the increase of fault obliquity becomes, the easier activation of fault becomes. According to research result, the critical advanced distance was calculated when the interval mining method adopted, following the example of water-preserved mining at Daliuta mine. The calculated result was validated by the use of a similar simulation.关键词
断层活化突水/力学分析/保水采煤/间隔式开采/相似模拟试验Key words
fault activation water inrush/ mechanical analysis/ water-preserved mining/ interval mining/ similar simulation experiment分类
矿业与冶金引用本文复制引用
师本强,侯忠杰..覆岩中断层活化突水的力学分析及其应用[J].岩土力学,2011,32(10):3053-3057,5.基金项目
教育部博士点基金资助项目(No.20050504003). （No.20050504003）
