Soil pressure analysis of independent slip boulder

As a product of collapse, the boulder had caused a certain degree of threat. According to the survey of urban disasters in the northern part of Wumeng Mountain, in June-August 2017, the boulder rock led the slop of the slope to block three rural roads, damage a house and many fields. According to figures there is about 50 million yuan lose because of the loss and slip of the boulder. Instability of the boulder can be showed through independent slipping, boulder land sliding and dumping. The first two forms of movement are collected the recorded in data after the occurrence, and the last form is collected by the typical potential dangerous simple. Based on Coulomb's theory of soil pressure and predecessors' research on retaining wall, this paper studies the interaction between soil and stone by formula method, and establishes the model to calculate the stability, and analyzes the influence of dynamic changing soil properties.