基于赤平投影和萨尔玛法的西藏某露天矿山边坡稳定性评价

Slope stability evaluation of an open-pit mine in Xizang based on stereographic projection and Sarma method

摘要:

本文以西藏某铜矿区露天矿山岩质边坡为例，基于矿山边坡现场调查及其工程地质特征，开展了矿山边坡工程地质分区研究，并采用赤平投影法和萨尔玛法相结合，定性分析和定量计算边坡稳定性。研究结果表明：边坡稳定性评价结果与当前边坡现状相一致，矿区边坡总体上稳定性较差，局部区域边坡稳定性差。通过定性和定量两种稳定性评价方法相互印证，对下一阶段边坡灾害防治设计、施工等提供了重要依据，对类似边坡工程有很好的参考和借鉴作用。

Abstract:

In this paper， taking the rock slope of an open-pit mine in Xizang as an example， based on the site investigation and engineering geological characteristics of mine slope， the engineering geological zoning of mine slope is studied， and the slope stability is qualitatively analyzed and quantitatively calculated by combining the stereographic projection method and Sarma method. The research results show that the slope stability evaluation results were consistent with the current slope status. The slope stability of mining area was not good in general， and the slope in local area has poor stability. Both qualitative and quantitative stability evaluation methods confirm each other， which provides an important basis for slope disaster control design and construction in the next stage， and this has a good reference for similar slope projects.