Stability Analysis and Treatment Measures of Landslidein Quping Village, Tianshui

The landslide disasters in the north and south mountain areas of Tianshui are extremely developed, and it is extremely challenging to build roads in this area. Taking the analysis and remediation of a large tractive deposit landslide in Quping village, Tianshui as an example, engineering geological mapping, drilling, deep displacement monitoring, and indoor mechanical tests were conducted to analyze the form, deformation, and development characteristics of the landslide. The disaster mechanism of the landslide was studied and its stability was evaluated, and remediation measures were provided. The results show that the Quping landslide could be divided into two stages in plane morphology, the sliding direction is broken line, the sliding body is mainly composed of silty clay, and the sliding bed is Neogene mudstone, which is a typical accumulation landslide. The buried depth of the sliding surface is 6.0~13.0 m, and the deformation mode is traction type, which is induced by the geological environment of the slope, earthquake, heavy rainfall, and other natural factors. In view of the landslide, a set of treatment plans such as drainage interception, retaining, and monitoring was put forward, which can provide a reference for the control of similar landslide disasters.