Improvement Study Of Dhizaizi Dam Stability By Micro Pile And Stone Column

Abstract

Geotechnical engineers have always been concerning with the stabilization of
slopes. For this purpose, various methods such as retaining walls, piles, and geosynthetics
may be used to increase the safety factor of slopes prone to failure. The application of stone
columns may also be another potential alternative for slope stabilization. Such columns have
normally been used for cohesive soil improvement. In this study, limit equilibrium method
has been presented by SLIDE V.6.2 program to investigate the stability of slopes reinforced
with multi-rows of stone columns, and reinforced by using tieback support. The results have
shown that the safety factor of slope-reinforced with stone columns and Tieback generally
increases. Moreover, it has been found that to achieve a specific FOS underestimate the value
of required reinforcement by a large amount.