Research on Treatment Scheme for Subgrade Slope Landslide of Red Bed Geological Expressway in Western Yunnan
In view of the actual situation of uncontrollable engineering investment and safety caused by the high incidence of landslides in the red bed geological subgrade slope in western Yunnan,this paper combines the actual case of subgrade slope landslide on Yunlong-Lanping Expressway,and uses simplified Bishop method and unbalanced thrust method to carry out stability analysis and treatment research after on-site geological drilling.According to the principle of"foot fixing and waist locking",the reinforcement treatment scheme of anti-slide pile + prestressed anchor cable is proposed.The effectiveness of the scheme is verified by the field reinforcement effect,which provides a reference for the treatment of subgrade slope landslide in similar projects in the red bed geological area of western Yunnan.At the same time,it has certain reference significance for the treatment of excavated subgrade slope instability on mountainous expressways.
expresswayred bed geology in western Yunnansubgrade slopelandslide control
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