The Pioneer Mine Stope North Slope Landslide Analysis And Research

The stability and security of slope contribute as the fatal role for the safety of mine during the process of producing surface mine. Therefore, the stability analysis of slope is significant important for mine production. The stability of the slope guarantees the normal production of surface mine.This paper takes the North Slope of Xian Feng mine in Yunnan Province as a research project. Through analysis the expansiveness of soil, we can conclude that the reason of deformation and slide in the Northern Slope is due to the large amount of expansive oil. By analyzing the rainfall and on-site displacement of slope, we can identify that there is a close relationship between them.This article takes the different physical and mechanical parameters in different moisture conditions as the research evidence. The author collects the appropriate imitation specimen's parameters from the spot shearing test as well as the room parameter in different water shear interior remodeling test to simulate the stability of the North Slope with the help of software FLAC3D The author calculates the safety factor based on strength reduction FEM theory of slope and ascertains the area of slope plastic and the condition of increment stress strain according to Moore coulomb strength theory.The numerical simulation analyses that the North Slope which contains the expansive soil has different slide stabilities with the stress weight status under water immersion and non-water immersion The data of safety and increment of stress strain shows that slope with expansive soil under the stress of water and the mechanical parameters changes greatly, which makes the whole slope under the water immersion condition move significantly. At the end of the paper, the author also proposes some useful suggestions to deal with the slid of the North Slope.