Influence of Residual Settlement in Goafs on Stability of Deeply Excavated Slopes
The residual settlement in goafs has a great influence on the stability of expressways.To analyze the influence of residual settlement in goafs under expressways on the stability of high and steep slopes,several test schemes were designed and stabillty analysis of high and steep slopes was performed.By the optimization study for the stability of deeply excavated slopes,it was concluded that the slope angle was the main factor affecting the stability of slopes,followed by the slope height,the internal friction angle and cohesion of rock masses,and the gravity densities of rock masses.The relational formulas between cohesion and slope safety factors,internal friction angle and slope safety factors were obtained,and the safety factor formula of slopes in simultaneous reduction of cohesion and internal friction angle was also obtained.The result showed that the residual settlement in goafs seriously affected the stability of deeply excavated slopes.The equivalent simulations of residual settlement could provide reference to influence evaluation of residual settlement on stability of deeply excavated slopes in goafs.
NETL
NSTL
万方数据
维普
