近距离煤层同采巷道布置研究

Research on Layout of Roadways of Contiguous Seams by Simultaneous Mining

本文以某矿近距离煤层为工程背景,首先采用理论分析确定了上组煤开采对底板的破坏深度和回采巷道布置方式,然后针对上组煤开采侧向支承压力进行数值模拟,确定了同采回采巷道外错式间距为15m。针对外错式间距为15m条件下进行数值模拟,研究了同采时巷道的屈服破坏特征和围岩变形量,研究表明,回采巷道外错式间距为15m的合理性,巷道围岩稳定。

Based on the engineering background of contiguous seams in one mine,this paper firstly determined the the floor failure depth in upper group coal mining and the layout of the mining roadway by using the theoretical analysis.and obtain the distance of external-misaligned is 15m by lateral abutment pressure in upper group coal mining is simulated numerically.Characteristic of yield failure and deformation magnitude of the surrounding rock is studied with the conditions the distance of external-misaligned is 15m by numerical simulation,the study shows that rationality of the distance of external-misaligned and the surrounding rock of the roadway is stable.