红柳林煤矿中西部区域煤层顶板突水危险性评价

Risk assessment of water inrush from coal seam roof in the central and western regions of Hongliulin Coal Mine

榆神矿区原煤产量持续增加,对推进国家西部能源基地建设,保障国家能源安全具有重要意义。随着煤层开采深度不断加大,地质环境条件越来越复杂,煤层顶板水害威胁日益凸显。依据红柳林煤矿中西部地区水文地质勘查成果资料,对煤矿水文地质条件和充水因素进行研究分析,拟评价煤层开采顶板突水危险性。研究表明,红柳林煤矿中西部区域煤层开采突水威胁主要来源于上覆含水层水与老空区积水,局部覆岩较薄地区随着导水裂隙带贯穿地表还受到地表水的影响。但总体而言,其突水程度受导水裂隙带发育高度影响,较为可控。提出的防治水工作建议可为矿井中西区煤层后续安全开采和顶板探放水工作提供科学依据。

The continuous increase of raw coal output in Yushen mining area is of great significance for promoting the construction of energy base in the west of China and ensuring national energy security.With the continuous increase of coal seam mining depth and the increasingly complex geological environment conditions,the water hazard of coal seam roof has become increasingly prominent.In this paper,based on the hydrogeological exploration results in the central and western regions of Hongliulin Coal Mine,the hydrogeological conditions and water filling factors of the coal mine are studied and analyzed,and the risk of roof water inrush in coal seam mining has been evaluated.The research results show that the water inrush of coal seam mining in the central and western regions of Hongliulin Coal Mine mainly comes from the water in the overlying aquifer and the standing water in the old goaf,and some areas with thin overburden are also affected by the surface water as the water conducting fracture zone penetrates the surface.However,in general,the water inrush degree is controlled by the development height of the water conducting fracture zone.The suggestions for water prevention and control provide a scientific basis for the subsequent safe mining of coal seams in the middle and west of the mine and the exploration and drainage of roof water.