An Analysis On The Open Slope Stability Of A Mine In Qinghai-Tibet Plateau

With the rapid growth of C hina’s economy, industrial development requires more and more energy and mineral resources. It is very important to strengthen the domestic development and utilization of mineral resources for China’s economic growth. There are vast mineral resources in western China. Many large-scale mines in the western region are open mines. Therefore, it’s meaningful to study the slope stability of these mines for their production safety.This thesis is based on the project ―The First Phase Project of A Mine in Western China‖. Drawing on limit equilibrium theory, it analyzes the typical cross section of slope stability under natural conditions, rainfalls, and earthquakes, and compares levels of stability under different conditions. The thesis establishes the overall three-dimensional numerical model of the mine, and applies the numerical simulation method. It analyzes the area prone to buckling deformation of the entire slope of the mine at a low temperature, rainfalls, and earthquakes from a macro point of view, and explores the reasons, and makes suggestions for prevention and control of slope instability of the corresponding area of the slope.The major findings are as follows:1. This thesis analyzes the main factors affecting slope stability, combining the slope hydrogeology and engineering geological conditions.2. This thesis analyzes typical sectional slope stability under multiple working conditions, applying the finite element software.3. This thesis calculates the slope stability of the mine by softwares, drawing on the three-dimensional modeling of the region of the entire mine.4. This thesis analyzes the slope stability of the mine according to the simulation results, identifies areas prone to deformation, and proposes suggestions for prevention and control.