Based on the relaxation and deformation treatment project of the slope at the entrance of a traffic tunnel for a hydropower engineering project,this work conducted an in-depth analysis of the causes of slope deformation.By in-tegrating geological survey data and the current slope stability conditions,the overall stability of the slope is verified through the inverse calculation of geological parameters.Furthermore,the required reinforcement forces are derived through reverse calculations,leading to the proposal of corresponding mitigation measures.The reverse calculation in-dicates that the initially proposed sliding surface No.3 does not meet stability requirements under normal conditions,heavy rainfall(fully saturated),heavy rainfall(saturation to a depth of 5 m),and seismic conditions.For these sce-narios,the required anti-slip force per unit width is calculated,and appropriate remedial measures are suggested.The research results demonstrate that implementing a combination of slope reinforcement,surface waterproofing,and slope drainage measures can effectively improve slope stability.
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