摘要
根据梧桐庄矿182306工作面开采前后水文地质资料,分析了该工作面底板发生突水的原因。煤层底板下存在隐伏导水陷落柱且采前未查明以及奥灰含水层强径流带的存在,是引起突水的主要原因。针对特大突水,在动水条件下采取了水力射流技术、多分支水平井技术等防治水技术,用时65 d快速高效地治理了特大动水突水灾害。
Based on the hydrogeology data before and after mining, floor water burst and water inrush and water plugging data of 182306 working face of Wutongzhuang Mine, the reason of the floor water burst was analyzed. The reason was the unknowing hidden water flowing subsided column under coal seam floor and strong runoff zone of Ordovician limestone aquifer. Hydraulic jet technology, multi-branch horizontal well technology was adopted according to large water burst, the water hazard was controlled in 65 d, the mining recovered quickly.
引文
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