关键词: 放顶煤工作面, 过空巷, 高水材料, 充填技术, 应力分布

Abstract: It is influenced by the forward support pressure for the overshoot of the fully mechanized working face,The area of plastic damage zone in the hollow roadway is expanded,Easy to cause coal wall sheet and empty roof collapse problem,Using numerical simulation software,The stress distribution of surrounding rock was analyzed and compared,The stress peak of the surrounding rock of roadway is obviously reduced after the empty alley filling, and the empty lane fill improves the stress state of the surrounding rock and reduces the stress value of the surrounding rock.Based on the scene situation, the filling construction scheme of high water materials was determined and the industrial test of the filling and filling of the fully mechanized face was carried out. Results show that the working face by filling fills up the lane area during the working face roadway roof subsidence of two consecutive a maximum of 146.8 mm, the maximum amount of drum at the bottom of 195.2 mm, drums left for a maximum of 49.8 mm, to help drum right out of the maximum amount of 82.2 mm, roadway deformation does not affect the normal mining working face, the strong to protect the safety of working face through empty lane area.