山西某铁矿复杂岩土体边坡滑坡形成机制分析及治理措施

Analysis on Formation Mechanism and Treatment Measures of Complex Rock and Soil Slope landslide in an Iron Mine in Shanxi Province

山西某露天铁矿形成的边坡存在多种岩土体,各岩土体性质差异较大,特别是上部黄土边坡在平面分布以及厚度变化均较大,由于黄土的性质特殊,在地下水渗流影响下导致强度明显降低,导致局部形成滑坡灾害。本文从岩土体基本的物理力学性质和水文地质、渗流条件入手分析其滑坡形成机理,对现状稳定性进行系统分析,通过优化边坡角度并结合相关防治水措施等确保露天边坡安全。

There are many kinds of rock and soil bodies in the slope formed in an open-pit iron mine in Shanxi Province,and the properties of each rock and soil body are quite different,especially the properties of upper loess slope is quite different in plane distribution and thickness change.Because of the special properties of loess,the strength is obviously reduced under the influence of groundwater seepage,which leads to local landslide disaster.In this paper,in terms of basic physical and mechanical properties of rock and soil mass and hydrogeology as well as the seepage conditions,the formation mechanism of landslide is analyzed and the stability of the current situation is systematically analyzed.By optimizing slope angle and in combination with relevant water prevention measures,the safety of open-pit slope is ensured.