论文部分内容阅读
一、问题的实质及意见我国露天煤矿工程地质条件复杂、滑坡类型众多。理论分析和工程实践证明,对于松散介质和第四纪冲积层土壤、粘土、砂砾层等以及包含多组产状各异的节理裂隙和风化的岩体,圆弧型滑坡仍不失为露天矿边坡滑落的重要类型。特别是对于那些不存在被大型地质结构面切割呈不稳定楔体的顶帮整体边坡、厚表上边坡、排土场边坡以及金属露天的尾矿坝等边坡的稳定性评价中仍常常采用圆弧型滑动模式。对于圆弧型滑坡的稳定分析有两个主要问题:1、如何就已知滑弧进行稳定计算,现有的计算方法很多,依力学原理不同可分为:
First, the essence of the problem and opinions China’s opencast coal mine complex geological conditions, many types of landslides. Theoretical analysis and engineering practice show that the arc-shaped landslide is still an open pit slope for loose media and Quaternary alluvial soils, clays, gravel beds, and other groups of joints with fractured joints and weathering rock mass An important type of slip. Especially for the stability evaluation of slopes without top wail, thick upper slope, dump surface slope and open-air tailings dam etched by unstable geological wedges in large geological structures Often arc-type sliding mode. There are two main problems for the stability analysis of arc-type landslide: 1, How to make known the stability of the arc-slip calculation, there are many existing calculation methods, which can be divided according to the principle of mechanics: