Simulation analysis of deformation mechanism of engineering slopes in Danxia landform area of Guizhou Province
During the construction of the Renchi Expressway in Guizhou Province,active protective measures using support nets were implemented for the Danxia engineering slopes along the route.After several years of weath-ering and erosion,the rock mass of this section of the slope exhibited unloading looseness and spalling,affecting the safe operation of the highway.To understand the deformation mechanisms of the Danxia engineering slopes,a field geological survey and basal friction tests were conducted,using the Wanglong ramp slope as an example to simulate and analyze the deformation of the engineering slopes in the Danxia landform area of Guizhou Province.The research results indicate that the slope rock layers in the Danxia landform area of Guizhou Province consist of typical red bed slopes composed of alternating mudstone and sandstone.Due to the differing lithologies of the mud-stone and sandstone,the mudstone often develops into concave rock cavities,while the sandstone forms dangerous rock masses.The newly excavated slope surface experiences shallow damage due to the effects of unloading fissures and weathering,whether acting separately or in combination.
danxia landformengineering slopedeformation mechanismsimulation research
万方数据
维普
