Design scheme and numerical simulation of high slope treatment for expressway tunnel entrance in Yunnan Province
Slope protection is an important content in highway engineering,it is not only related to the stability of slope and the service life of highway,but also related to the overall safety of highway.A stack slope at the entrance of a highway tunnel in Yunnan Province is taken as an example,and a corresponding support scheme is designed according to the actual situation of the slope,that is,the slope is cut and unloaded,and the support forms of anti-slide pile,anchor(cable)frame beam and shotcrete anchor are added.Then comparison study are carried out between the supported slope and the original slope.According to the results of numerical simulation,the slope shear strain increment is reduced to some extent compared with the original slope,the horizontal displacement and potential slip layer of the slope are effectively controlled,and the slope stability is greatly improved.
excavation support of tunnel slopesslope treatmentnumerical simulationaccumulation bodyslope stability
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