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宁武煤田北部平塑矿区煤矿开采受奥灰底板承压水威胁,由于奥陶系灰岩含水层富水性强、水压高、补给水源区域广、隔水层相对薄弱、区内断裂构造及陷落柱发育,致使该区煤层开采受奥灰水严重威胁。煤层开采时,对断层及陷落柱导通奥灰水的危险性分析与研究显得极为重要。文章结合担水沟煤矿9101工作面实际情况,做一些浅析。
Coal mining in Pingdu coalfield in the northern part of Ningwu coalfield is threatened by pressure-bearing limestone floor. Due to the high water-bearing capacity, high water pressure, wide supply water source area and relatively impermeable aquifer in the Ordovician limestone aquifer, the fault structure and Subsidence column development, resulting in a serious threat to the coal mining in the area by the Austrian gray water. When mining coal seams, it is very important to analyze and study the dangerousness of the fault and the collapse column in turning on the Ordovician gray water. Based on the actual situation of 9101 working face in Danshugou Coal Mine, this article makes some analysis.