15号煤层奥灰岩溶水带压开采可行性研究

Feasibility Study on Pressure Mining of Ordovician Limestone Karst Water in the 15th CoalSeam

为了保证阜生煤矿15号煤层综采工作面带压开采安全,杜绝水害事故发生,对15号煤层奥灰岩溶水水文地质特性进行分析,并对带压开采安全可行性进行评价,提出了带压开采方案及带压开采防治水措施。结果表明,15号煤层底板到奥灰顶面之间隔水层加权平均值为23.41 m,无构造破坏情况下不受底板奥灰水的威胁,对于构造区采取防治水措施可消除底板奥灰水隐患。

In order to ensure the safety of pressure mining in the 15th coal seam of Fusheng Coal Mine and prevent water accidents,the hydrogeological characteristics of the Ordovician limestone karst water in the 15th coal seam were analyzed,and the safety feasibility of pressure mining was evaluated.A pressure mining plan and water prevention measures for pressure mining were proposed.The result shows that the weighted average value of the impermeable layer between the floor of Coal Seam 15 and the top of the Ordovician limestone is 23.41 meters,which is not threatened by the Ordovician limestone water in the floor without structural damage.Taking water prevention and control measures in the structural area can eliminate the hidden danger of the Ordovician limestone water in the floor.