补连塔煤矿采空区储水安全性评价

Safety assessment of water storage in the goaf of Bulianta coal mine

补连塔煤矿为减少矿井污水外排、充分利用水资源,将矿井污水注入采空区进行污水净化、储水和复用,因采空区采用隔离煤柱、防水密闭墙进行了封闭,为保证采空区储水和回采区域的安全生产,在通过建立物理、数学模型对隔离煤柱、密闭墙、围岩强度和煤体裂隙发育情况以及采空区水体性质和水压大小进行研究的基础上,分析了采空区储水的安全性,确定了采空区储水的限制水位和安全警戒线。

To reduce wastewater disposal in Bulianta coal mine,and make full use of water resources,the waste water is injected to goaf for purification,water storage and reutilization.As there are separate coal pillar,waterproof airtight wall in goaf,to guarantee the goaf water storage and production safety in mining area,physical and mathematical model are established to study the separate coal pillar,airtight wall,strength of surrounding rock,fracture development of coal body,goaf water properties and water pressure,and to analyze the security of mining goaf water storage,determine the water level limit and security line of goaf water storage.