白砺滩露天矿二采区烧变岩边坡稳定性研究

Slope Stability Study on Burnt Rock of No.2 Mining Area in Bailitan Open Pit Coal Mine

以白砺滩露天煤矿二采区烧变岩边坡为研究对象,选取典型剖面进行稳定性分析,根据分析结果对最终边坡角进行优化。结果表明:天然状态下,1剖面、2剖面保持稳定的边坡角分别为34°和36°;疏干排水状态下,3剖面保持稳定的边坡角为32°;以安全系数1.15为安全标准,在疏干排水工程配套到位的情况下,3剖面的边坡角可提高到33°～34°,1剖面可提高到36°。

This paper took the burnt rock in No.2 mining area of Bailitan Open-pit Coal Mine as the research object, selected the typical section for stability analysis and optimized the final slope angle based on the analysis results. The results showed that the slope angles of section 1 and section 2 remain stable at 34° and 36° respectively in natural state, and in underground dredging and draining condition, the slope angle of section 3 remains stable at 32°;take the safety factor of 1.15 as the safety standard, in the case of underground dredging and draining works in place, the slope angle of section 3 could be increased to 33° to 34°, and section 1 could be increased to 36°.