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8107工作面上方地表为黄土丘陵区,地形较为复杂,工作面南侧为矿井工业广场,8107工作面开采后将影响工广边缘的煤仓坡体的稳定。分析了影响坡体稳定的主要因素为张性地裂缝,并对坡体的移动变形进行了预计,采后坡体移动变形较大。结合西山矿区开采实践,采后坡体将出现裂缝、台阶,在地表水作用下可能产生滑坡灾害,影响坡体稳定和煤仓安全使用。为确保煤仓的安全正常使用,对8107工作面进行了开采优化,即采取于煤仓北部坡体的下部留设小煤柱开采的措施。
The surface above the 8107 working face is a loess hilly region, with a complex topography. The mine industrial plaza is on the south side of the working face. The mining of section 8107 will affect the stability of the coal silo body at the edge of Gong-Guang Railway. The main factor that affects the stability of slope is analyzed as the tensile fractures, and the displacement deformation of the slope is predicted. After the mining, the slope deformation is large. Combined with the mining practice in Xishan mining area, cracks and steps will appear in the post-mining slope, which may cause landslide hazard under the action of surface water and affect the stability of slope and the safe use of coal bunker. In order to ensure the normal use of the safety of coal bunker, the 8107 face was optimized for mining, that is, taken from the coal pillar in the northern slope of the lower part of the small coal pillar mining measures.