基于FLAC3D的山区公路高边坡滑坡治理方案优选

以黔东北某山区公路高边坡滑坡治理工程为例,基于FLAC3D软件最大位移、最大剪应变增量等计算结果,结合施工难度、经济性等因素,在三种方案中选取预应力锚索框架梁+抗滑桩复合支护为最佳支护方案.研究桩位对支护效果的影响,最终确定抗滑桩距锚索框架梁10m左右时支护效果最佳.竣工后的监测结果表明,边坡的优化设计达到了预期效果.

Optimization of Treatment Scheme for High Slope Landslide of Mountain Highway Based on FLAC3D

Taking the high slope landslide treatment project of a mountain highway in Northeast Guizhou as an example, based on the calculation results of the maximum displacement and maximum shear strain increment of FLAC3D software, combined with the construction difficulty, economy and other factors, the prestressed anchor frame beam + anti-slide pile composite support is selected as the best support scheme among the three schemes. The influence of pile position on the supporting effect is studied, and it is finally determined that the supporting effect is the best when the anti-slide pile is about 10 m away from the anchor cable frame beam. The monitoring results after the completion of the construction show that the optimal design of the slope has achieved the expected effect.