论文部分内容阅读
运用数值模拟分析了工作面在断层下盘推进过程中断层带中硬厚岩层边界上应力变化规律,以确定工作面推进过程中硬厚岩层锁止断层特征。研究结果表明:在工作面推进过程中,硬厚石灰岩及其下部形成类似杠杆结构,支点前部有抬头现象,挤压断层带并形成锁止区域。支点随工作面逐渐向前移动,在距断层90 m时,锁止效果达到最佳。
The variation of stress on the boundary of the hard-rock bed in the fault zone during the process of propping up the fault was analyzed by numerical simulation to determine the characteristics of the lock-up fault in the hard-rock formation during the propulsion of the working face. The results show that the thick limestone and its lower part form a lever-like structure during the working face advancement, the front part of the fulcrum has a head-up phenomenon, and the fault belt is extruded and the lock-up region is formed. The fulcrum gradually moves forward with the working face, achieving the best locking effect at a distance of 90 m from the fault.