The formation mechanism of landslides in typical fault zones and protective countermeasures: A case study of the Nanpeng River fault zone

Landslides are frequent in the Nanpeng River fault zone southwest Yunnan. Based on a Zhen Qing Expressway survey, geological conditions and characteristics of landslides this area were studied. The conclusions as follows: 1) background was internal cause local highly steep slopes broken rock masses. main landslide types study fault-type accumulation landslides. 2) formation is related to endogenous causes, such tectonic movements, but they less easily triggered than Accumulation masses sensitive external factors rainfall artificial unloading. 3) coordinated control permanent support engineering, deformation control, overall reinforcement should be considered preventive measures.