Stability Analysis and Numerical Simulation Research on Retaining Protection of Layered Slope in Road Cutting
In order to study the deformation characteristics,stability,and support protection of a lay-ered dolomite slope containing mudstone interlayers,numerical simulation calculations were conducted using midas GTS finite element software for a certain cutting slope.Combined with on-site observa-tions,the deformation characteristics,stress state,plastic zone distribution,stress characteristics of anti slip piles,and stability status of the slope after excavation and support protection were analyzed.The results indicate that after the excavation of the research slope to the roadbed elevation,the mud-stone interlayer is exposed,and its failure mode is plane sliding,with a stability coefficient of 0.92.The slope is unstable and further support is needed;After the excavation of the slope,the prestressed anchor cable experiences stress concentration on the surface of the slope and produces good reverse re-straint,improving the stress distribution inside the slope;After applying anti slip piles at the bottom of the slope,they are combined with prestressed anchor cables to constrain the slope and prevent it from sliding along the mudstone interlayer,providing a good barrier effect.Moreover,the combina-tion of the two has a good effect of strengthening the foot and waist,ensuring the overall and local stability of the slope;Through long-term observation,the comprehensive treatment of slopes using various structures such as anti slip piles and frame anchor cables has shown good support effects.The research results can provide reference for the stability analysis,deformation characteristics,and sup-port protection design of similar construction sites.
万方数据
维普
