伊敏露天矿内排土场边坡灾变机理研究
Study on mechanism of slope disaster in inner dump in Yimin Open-pit Mine
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摘要: 伊敏露天矿属于富水软岩边坡露天矿,富水煤岩边坡系统强度低、充水量大、渗透性差、演化弱层赋存复杂,容易存在滑坡隐患。通过分析伊敏露天矿的地质条件,确定了内排土场地下水的渗流方式;基于典型地质剖面建立SEEP/W渗流分析模型对内排土场地下水渗流进行模拟;分别对现状内排和设计内排进行模拟,得到现状内排较为稳定,但雨季仍有滑坡风险的结论。Abstract: Yimin Open-pit Mine belongs to the open pit mine of water-rich soft rock slope. The system of water rich coal rock slope is characterized by low strength, large water filling, poor permeability, complex occurrence of evolution weak layer, and prone to landslide. By analyzing the geological conditions of Yimin Open-pit Mine, the seepage mode of groundwater in inner dump is determined. Based on the typical geological section, SEEP/W seepage analysis model is established to simulate the groundwater seepage in the inner dump. Through the simulation of the current internal drainage and the designed internal drainage, it is concluded that the current internal drainage is relatively stable, but there is still landslide risk in rainy season.
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Keywords:
- open-pit mine slope /
- inner dump /
- water-rich soft rock slope /
- landslide risk /
- seepage mode
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