Excavation Deformation Characteristics and Treatment Effect Inspection of High Rock Slope with Oblique Intersecting Faults——Taking a High Rock Slope in the Southern Shaanxi,China as an Example
To elucidate the deformation characteristics during excavation of high rock slopes with oblique intersecting faults and the subsequent time-dependent behaviour after slope treatment,the comprehensive case study on a high rock slope with faults in the southern Shaanxi was conducted.The on-site surveys,numerical simulations,and multi-point displacement monitoring methods were employed to analyze the failure mechanisms inherent to high rock slopes with oblique intersecting faults,the primary disaster-inducing factors associated with these slopes were summarized,and the deformation characteristics during excavation process were analyzed,and the effectiveness of remedial measures for mitigating issues in high rock slopes with oblique intersecting faults was discussed.The results show that the study area has steep terrain and is influenced by faults and excavation at the foot of the slope,exhibiting typical overhanging terrain features,and geological structure affects the degree of exposed rock breakage and joint development.Numerical simulation demonstrates the feasibility of using an"anchor cable reinforces the upper slope+brushing the middle slope+anchor cable and anti-slide pile reinforces the slope foot"plan for high rock slopes with oblique intersecting faults.Combined with on-site surveys and monitoring data,it is evident that the slope stabilization treatment has a significant effect.The soil erosion effect at the fault site is substantial,and heavy rainfall has initiated a collapse issue on the platform near back edge fault of high rock slope.However,by implementing drainage measures near the fault and the base of the slope,the slope disaster are effectively mitigated while overall deformation rates are effectively contained.The research results have important reference value for the treatment of high rock slopes with oblique intersecting faults and the analysis of their failure mechanisms.
faulthigh rock slopeslope prevention and controlfailure mechanismnumerical simulationdeformation characteristictreatment evaluationShaanxi
万方数据
