露天煤矿靠帮开采端帮稳定性关键影响因素研究

Research on key influence factors of end-slope stability for steep end-slope mining in surface coal mine

为了提高煤炭资源回收量,更多地采出露天矿端帮下的压煤,论文在充分获取端帮地质资料的基础上,对影响端帮靠帮开采的因素——边坡角、岩层倾角和水位高度进行了理论分析,并利用FLAC/SLOPE软件,分别分析各个因素对边坡稳定性系数的影响,建立了边坡稳定性分析模型,得出了相关的函数图像关系。结果表明:边坡角、岩层倾角及水位高度对端帮稳定性影响明显,采取相应措施可更好地维护端帮稳定,并有利于端帮下的采煤。

For increasing the coal recovery quantity and mining more coal under the end-slope in surface mines, based on the detailed geological data, the factors which influence the stability of end slope-slope angle, inclined direction of rock seam and water lever height-is analyzed theoretically, and in terms of FLAC/ SLOPE, the analysis model of slope stability is built, and the correlative relationship figure is obtained. The result is shown that the slope angle, the inclined direction of rock seam and water lever height influence evidently to the stability of end-slope and taking some measures can keep stability of the end-slope well and is good for mining coal under end slope.