摘要
针对柠条塔煤矿南翼首采工作面S1210在回采推进至61 m处的强涌水灾害,探查和分析了矿区的地质与水文地质条件,得出涌水的主要水源为直罗组砂岩风化裂隙水,补给通道为由西向东的径流通道。利用帷幕注浆法在S1210工作面西侧径流通道上形成截流帷幕,改善了帷幕东侧的赋水性,有效降低了地下水流向工作面的补给,使工作面涌水量由初始的约1 000 m3/h衰减至375 m3/h。
The water inrush happened when S1210, the first working face reached 61 m in Ningtiaota coal mine. Analysing the geology and hydrogeology condition of the zone of water inrush, the results show that water comes from weathered and fractured sandstone of Zhiluo, and the flow path is from west to east. The technology of curtain grouting is applied to seal the flow path of water inrush. The curtain changes the water-bearing capability of sandstone at the west side of curtain. It is useful to reduce the quantity of water in working face： The quantity of water is from about 1 000 m3/h to 375 m3/h.
出处
《煤炭技术》
CAS
北大核心
2016年第5期203-205,共3页
Coal Technology
基金
陕西省工业攻关项目(2012K08-06)
中煤科工集团西安研究院有限公司科技创新项目(2013XAYCX026)
关键词
涌水
帷幕注浆
灾害
煤矿
water inrush
curtain grouting for sealing water
disaster
coal mine
