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潞安常村矿属于高瓦斯矿井,S6-7工作面和S6-6工作面使用“一进两回”通风方式,采用外错式共用尾巷布置。S6-7尾巷受相邻工作面开采二次动压影响,巷道的合理布置层位选择至关重要。通过数值模拟,针对不同布置层位下,S6-7尾巷受二次动压影响过程中,尾巷围岩应力、应变及破坏规律进行了分析。综合各方面因素,提出S6-7尾巷的合理布置层位应为沿煤层顶板布置。
Lu’an Changcun Mine belongs to high gas mine, S6-7 face and S6-6 face use “one into two back ” ventilation, the use of the wrong type of shared tail lane layout. S6-7 tailings affected by the second dynamic pressure of adjacent face mining, the reasonable choice of roadway layers is crucial. Through numerical simulation, the stress, strain and failure of the surrounding rock of tailrace are analyzed under the influence of the second dynamic pressure of S6-7 tailrace under different layers. Based on various factors, it is proposed that the rational layout of S6-7 tailrace should be arranged along the roof of coal seam.