摘要
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。
Analyzed the stress distribution rule in the process of the working face in the footwall on the boundary of hard and thick strata in fault zone by numerical simulation. The result indicated ： ：in the process of the working surface advancing,the hard and thick limestone and the lower part to form a similar lever structure,there is a rise phenomenon in the front of the fulcrum,squeezing fault and forming locking region. The fulcrum moves forward with the working face,the lock effect was the best, when it apart from the fault 90 m.
出处
《煤炭技术》
CAS
北大核心
2017年第4期19-21,共3页
Coal Technology
关键词
断层
硬厚岩层
断层锁止
数值模拟
fault
hard-thick strata
lock fault
numerical simulation
