疏放水技术在煤仓施工中的应用

Application analysis on dewatering technology in construction of coal bunker

纳林河二号矿井井底车场内设计的2个煤仓均过3-1和2-1煤顶板延安组砂岩含水层,且与这两层含水层连通。连通后的含水层整体富水性较强,对煤仓的掘进施工产生了水害威胁。通过对煤仓周围延安组砂岩含水层进行探查,查明其富水性和可疏性。根据富水性和可疏性对煤仓周围延安组砂岩含水层水进行疏放,充分疏放其静储量水,降低其水压,同时空间上对其产生分流效果,使其从煤仓周围钻孔流出而不流向煤仓内,从而确保煤仓掘进施工期间的安全。

Shaft bottom of Nalinhe No. 2 Mine designed two coal bunker,two coal bunker were all across 3-1and 2-1coal roof sandstone aquifer of Yan＇an formation,and the two layer aquifer connected aquifer overall strong water abundance,the flood threat tunneling on the coal bunker. Through the exploration of bunker around Yan＇an sandstone aquifers,to find out its rich water and can be dredge or not.According to the rich water and drainage of water,coal bunker around Yan＇an sandstone aquifers,fully discharge their static reserves of water,reducing the water pressure,and the space has been split on its effect,the outflow from the bunker to bunker and not around the drill,so as to ensure safety of the excavation during the construction of coal bunker at the same time.