同忻井田石炭系煤层底板岩溶水探查与防治

Exploration and Prevention of Karst Water in Carboniferous Coal Seam Floor in Tongxin Mine Field

同忻煤矿开采的石炭系煤层,距离底板奥灰-寒灰地层顶界面的垂直距离为50 m,属带压开采,为了查明井田内岩溶水分布及充水条件,以指导开拓部署,通过施工井下水文孔,进行抽(放)水试验,探查井田内岩溶水水文地质特征,再结合地质学、构造地质学的理论和方法,进一步研究井田构造控水特征,划分构造控水单元,并提出防治技术。

The mining of carboniferous coal seam in Tongxin Coal Mine is 50 m away from the top interface of ordovician limestone and cambrian limestone strata,which belongs to mining under pressure.In order to find out the distribution of karst water in the mine field and water filling conditions,guide the development deployment,through the construction of underground water hole,this paper carried out water pumping(drainage)test,explored the hydrogeological characteristics of karst water in the mine field.Combined with the geological,geological and geological,based on the theory and method of structural geology,the characteristics of structural water control in minefield are further studied,the structural water control units are divided,and the prevention and control techniques are put forward.