安全开采深部带压煤层及解决奥灰突水隐患问题之探讨

Discussion on Safe Mining of Deep Coal Seam with Pressure and Solving Hidden Danger of Ore

摘要: 本论文针对乌海矿区的上组煤接近资源枯竭阶段，部分煤矿已经开始开采下组煤(16#煤层)，而且由于下组煤紧邻奥陶系灰岩，奥灰岩富含地下水，在局部地段涌水量可达10,000 m³/h以上，水压可达4 MPa，对下组煤的开采造成很大水害威胁的实际情况，以利胜煤矿采用打钻注浆封堵和加固底板的方法进行总结分析，探讨本区域带压煤层开采的有效方法和途径，希望能对煤矿的防治水工作提供点借鉴经验。

Abstract: In this paper, the coal in the Wuhai mining area is close to the resource depletion stage. Some coal mines have begun to mine the lower coal (16# coal seam), and because the lower coal is adjacent to the Ordovician limestone, the Austrian limestone is rich in groundwater. In the local area, the amount of water inflow can reach 10,000 m³/h or more, and the water pressure can reach 4 MPa. The actual situation of threatening the water damage caused mining of the next group of coal. The Lisheng coal mine adopts the method of drilling and grouting to seal and reinforce the bottom plate. It summarizes and analyzes the effective methods and ways of coal seam mining in this area, and hopes to provide some experience for the prevention and control of coal mine water.