Research On Sensitivity Affecting Factors In Soil Slope Stability

In this study,the influence of different parameters on the safety factor of soil slopes,such as unit weight,cohesion,internal friction angle,slope height and slope rate,was analyzed.Based on the principle of limit equilibrium method,the thesis uses slide software to establish a soil slope model,conducts single-factor sensitivity analysis of slope ratio,friction angle and cohesion,and establishes a total of 300 working condition combinations.For each influencing factor,calculate the percentage change of safety factor when other factors change,and obtain the sensitivity result.The details are as follows:(1)Carrying out the sensitivity study of slope rate to safety factor,taking slope rate as the basic factor,respectively,conducting sensitivity tests of slope height,cohesion,friction angle,and unit weight,then establish a total of 100 test conditions.The sensitivity analysis result is ?> ?> c > H that is for slope rate 1: 1 to 2: 1 range and for slope's rate above(2.5:1)sensitivity ranks as ?> c > H> ?.(2)Taking the friction angle as the basic factor,the sensitivity tests of slope rate,slope height,cohesion,and unit weight were carried out respectively,and a total of 100 test conditions were established.The sensitivity analysis result is ?> c > H>?.(3)Taking cohesion as the basic factor to carry out sensitivity tests of slope rate and slope height,friction angle,and unit weight,respectively,and a total of 100 test conditions were established.The sensitivity analysis result is ?> ?> H> ?.