高边坡岩体结构面发育特征及其对边坡稳定性的影响

Abstract

岩体中结构面发育与分布情况对边坡的稳定性有着重要的影响。结合露天矿高边坡工程实例，对边坡的结构面进行实测与合理的统计分析，对边坡做出初步定性评价，为边坡稳定性的后期定量评价以及分析方式提供相关的参考。文中采用测线法来获取岩体结构面的基础资料，通过理正软件画出极点图、等密度图与节理玫瑰花图并进行分析获取优势结构面。利用matlab软件对基础数据进行统计分析得出相应的概率分布直方图与拟合曲线，与概率模型较为吻合。将所得出的优势结构面通过极射赤平投影的方法对边坡进行稳定分析，得出结构面对边坡的稳定性影响较小，边坡基本稳定。 The development and distribution of structural facies in rock mass have an important influence on the stability of slope. Based on the example of high slope engineering in opencast mine, the structural surface of slope is measured and analyzed statistically. The preliminary qualitative evaluation of slope is made, which provides relevant reference for post-level quantitative evaluation of slope stability and analysis method. In this paper, the lateral line method is used to obtain the basic data of the structural surface of the rock mass. The pole plot, the equal density map and the joint roses are drawn and analyzed to obtain the dominant structural plane by Lizheng software. Using the matlab software to analyze the basic data, the corresponding probability distribution histogram and fitting curve are obtained, which is in good agreement with the probability model. The results show that the stability of the structural slope is relatively small and the slope is basically stable.