综采工作面回采巷道煤柱应力分析与参数优化

Stress Analysis and Optimization of Parameters of Coal Pillar in the Stoping Tunnel of Comprehensive Mechanized Coal Mining Face

通过对大同煤矿集团有限责任公司同家梁矿81015综采工作面回采巷道煤柱中的应力观测,分析了回采工作面采动期间煤柱应力分布规律。运用数值模拟方法,研究了不同煤柱宽度下巷道围岩变形和破坏特征,确定了比较合理的煤柱参数,最后介绍了应用实例。

Through observing stress of coal pillar in the stoping tunnel of 8 10 15 comprehensive mechanized coal mining face of the Tongjialian Coal Mine of Dat ong Coal Mine Group Co. Ltd., this paper analyzes on stress distribution law of coal pillar of the stoping face in the excavating period, research features of d istortion and destroying of tunnel wall rock in the different width of coal pill ar by using numerical simulation method, determine reasonable parameters of coal pillar, finally introduces the applying example.