平朔井工三矿9#煤层充水因素分析及水害防治

Water-filled Factors Analysis and Prevention and Control of Water Disaster for No.9 Coal Seam in Pingshuo No.3 Coal Mine

分析平朔井工三矿的充水因素,认为开采9#煤层的最大隐患是顶板石炭-二叠系砂岩突水,大气降水、地表径流以及大沙沟水补给下部含水层导入矿井也是不可忽视的因素,并利用导水裂隙带高度计算结果对煤层顶板水冒落安全性进行分析评价,为矿井水害防治提供了决策依据。

By analyzing the water - filled factors of Pingshuo No. 3 Coal Mine, roof water inrush from carboniferous - permian sandstone is considered to be the most hidden trouble during mining No. 9 coal seam. Meteoric water, surface runoff and water from Dashagou re- chargeing the lower aquifer and into mine are also the nonnegligible factors. Also, failing safety of coal seam roof water is analyzed and evaluated by using the result of the height of the water flowing fractured zone, which provides basis for decision making in preventing and control water disaster.