Study on Water Filling Conditions in Deep Mining
The study on water filling conditions of coal seam is important not only for the study contents of mine hydrogeology but also for mine water hazard control. The water filling conditions of coal in mining mainly consist of source of water-filled, water passageway, and other factors. In Geting coal mine, Tenth lower limestone is the main direct aquifer of water-filled and Ordovician limestone is the indirect aquifer of water-filled when lower coal seams are exploited. Tenth lower limestone water is more abundance (abundant) and has high pressure; it has to be drained out before mining. Ordovician limestone is high-pressure water-bearing stratum, and the water inrush with floor heave may suddenly occur in deep mining. As both indirect and direct aquifer, Ordovician limestone threatens the safety of lower coal seams seriously and is the key prevention target. The water passageway includes drilling closed badly, fault zone, collapse column conducting water, roof and floor broken cracks caused during mining. Affected by mining activities and rock mass structures or meeting with fault, drillings especially those closed badly would become floor water filling channels. Fault zone, collapse column conducting water and broken cracks caused in mining make displacement decrease or counterparts meet between Ordovician limestone and other strata, which makes aquifuge integrity destructed and water resisting capability depressed, then the rate of floor water inrush occurring enhances and it is extremely dangerous. When the lower coal seams mined in Geting mine, it is necessary to attach importance to water filling factors. This can guarantee the safety in production.
CHEN Shaojie GUO Weijia WANG Yabo ZHAO Tiepeng
Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266510, Shandong, China
国际会议
2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)
青岛
英文
422-427
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）