金谷煤矿地表水害防治技术研究

Research on prevention and control technology of Surface water disaster in Jinguu Coal Mine

针对水体下煤层开采中工作面突水隐患较大,生产条件复杂等问题,通过理论分析以及工程现场实践对山西古县金谷矿河流压煤开采可行性进行了研究,认为金谷煤矿满足河流压煤开采条件,通过采空区不同处理方式情况下地表移动变形值计算发现相比于全部垮落法,充填开采可减少地表移动预计值78%以上,在此基础上提出了采用压煤充填开采防治水技术方案,确保了金谷煤矿井下工作面采掘活动安全生产,为相似工程条件下地表水害防治提供了一定的理论依据与技术指导。

Aiming at the problems of water inrush hidden danger and complex production conditions in coal seam mining under water body,taking Jinju Mine in Guxian County,Shanxi Province as the engineering background,the feasibility of river coal pressing mining in Jinju Mine is studied through theoretical analysis and engineering field practice.It is concluded that Jinju Mine meets the mining conditions of river coal pressing.According to the calculation of surface movement and deformation value under different goaf treatment methods,it is found that compared with the total caving method,filling mining can reduce the predicted surface movement value by more than 78%.On this basis,the technical scheme of water prevention and control by filling mining with coal pressing is put forward to ensure the safe production of mining activities in the underground working face of Jingu Coal Mine.It provides a certain theoretical basis and technical guidance for the prevention and control of surface water damage under similar engineering conditions.