邹庄煤矿南翼工作面覆岩破坏的特征分析

Characteristic Analysis of Overburden Failure in South Wing of Working Face in Zouzhuang Coal Mine

为实现安全、绿色开采,基于邹庄煤矿水文地质资料,通过现场实测、数值模拟和理论分析等,使用FLAC 3D软件模拟了工作面推进时覆岩产生的竖向应力、应变及位移的演化规律,揭示了深部开采时覆岩断裂破坏规律。研究发现,覆岩竖向位移随着煤层开挖缓慢增大,在顶板中心位置达到最大,覆岩应力、应变随着煤层开挖逐渐缓慢增大且最终趋于稳定状态,但仍然需要加强工作面支护,预防安全事故发生。

In order to mine safely and greenly,the evolution law of vertical stress,strain and displacement of overburden during working face advancement was simulated by FLAC 3D software to reveal the fracture damage law of overburden during deep mining on the basis of the hydrogeological data of Zouzhuang coal mine and through the field measurement,numerical simulation and theoretical analysis.It was found that the overburden vertical displacement increased slowly with the excavation of coal seam and reached the maximum at the center of the roof,and the overburden stress and strain increased slowly with the excavation of coal seam and eventually stabilized,but it was still necessary to strengthen the working face support to prevent safety accidents.