Analysis of High Slope Excavation Support Stability Considering Rainfall Infiltration
[Purposes]In order to study the stability of the high slope after multi-stage excavation and support,a high slope project in Dazhou City,Sichuan Province was established based on ABAQUS soft-ware and combined with the site engineering geology and hydrogeological conditions.[Methods]Consid-ering the influence of different rainfall conditions,the calculation method of multilayer unsaturated soil is introduced,and combined with the field monitoring,the rainfall condition is studied,and the stability of unsaturated soil slope is summarized.[Findings]The results show that the pore water pressure and slope displacement are positively correlated with rainfall intensity and rainfall duration,and long-term high intensity rainfall is prone to large slip in multi-stage excavated high slope.[Conclusions]It is sug-gested to take the construction measures of excavation and support.The results can provide some theo-retical reference for the stability research of multi-stage excavation support of high slope.
high slopestability analysisrainfall infiltrationmulti-layer unsaturated soilfield monitor-ingnumerical simulation
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