Studyon the computingmethod for the stabilityof the loess slope

Objective—To overcome such problems as some errors made by not taking into account of the certain inclination of the top of the slope while the stability of slopes is analyzed with weighted average of most soil parameters and slope ratio during the stability analysis of the multi-soil layer and multi-step slope.Methods—By considering the situation of the soil stratification of slope,the ratio of the top of slope,the size of the defense force(it is zero without protection)and the height of action point,the force model diagram of a slope is made,and a stability expression to reflect the actual situation of the loess slope is obtained.Results—It is easy and convenient to find the slope stability and indirectly determine the defense force to stabilize the slop by computer VB programming through the stability of the obtained expression.Conclusion—By taking into account of the different soil and the tilt of the top of a slope,this method can replace the weighted average of the soil in a slope,Meanwhile,from the slope stability analysis,the results is closer to the actual situation of the loess slope.