Study on the Influence of Safety Characteristics of Open-pit Mine Boundary Slope Considering Saturation
In order to explore the influence of rock sample saturation on the safety characteristics of open-pit boundary slope,the relationship between sample saturation and cohesion and internal friction an-gle was studied based on laboratory tests.Based on FLAC3D numerical simulation,the influence of saturation on the safety factor of slope model is studied.The simulation results show that when the saturation reaches 0.8,the safety factor is less than 1,and the displacement of all monitoring points will increase sharply.Be-fore the saturation reaches 0.8,with the increase of saturation,the time required for all monitoring points to stabilize the displacement curve increases,the displacement becomes larger and larger,and the safety fac-tor becomes smaller and smaller.In addition,the cohesion and internal friction angle decrease with the in-crease of saturation,but the decrease of cohesion is obviously larger than that of internal friction angle.In this rock and soil sample,there is a simple linear regression relationship between saturation and internal friction angle,while the relationship between saturation and cohesion and safety factor is more inclined to polynomial regression relationship.
万方数据
维普
