某公路构造碎裂岩质滑坡特征及成因分析

Characteristics and Genesis Analysis of a Highway Tectonic Cataclastic Rock Landslide

以巧家县白鹤滩镇白泥沟滑坡为研究对象,通过工程地质调绘、工程勘探及滑坡变形监测等勘测手段,确定滑坡体形态和性质,确定滑带土岩体力学特征,分析碎裂岩滑坡的形成机制,并对滑坡在天然状态、暴雨及地震工况下滑坡稳定性分析,结果表明:该构造碎裂岩质滑坡具有利滑动的地层及岩体结构及复杂的构造环境,在采石场边坡开挖、暴雨及地震等诱因作用下,滑坡处于欠稳定-不稳定状态。

Taking Bainigou Landslide in Baihetan Town of Qiaojia County as the research object,the shape and properties of the landslide body are determined by means of engineering geological mapping,engineering exploration and landslide deformation monitoring,the mechanical characteristics of the soil and rock mass in the sliding zone are determined,the formation mechanism of the cataclastic rock landslide is analyzed,and the natural state,rainstorm and earthquake of the landslide are also studied.The analysis of landslide stability under working conditions shows that the tectonic cataclastic rock landslide has favorable stratum and rock mass structure and complex tectonic environment.Under the action of excavation of quarry slope,rainstorm and earthquake,the landslide is in an unstable-unstable state.