云南地区强膨胀土路堑高边坡工程设计方案研究

针对昆明枢纽东南环铁路路堑工点双侧强膨胀土路堑高边坡，采用挡土墙、锚固桩、锚杆框架格梁、灌草护坡和支撑渗沟等多种措施进行综合支挡防护设计，为干湿交替明显的气候特征地区的高地下水位、强膨胀土挖方边坡治理的典型代表。该工程竣工两年来，已经历了三个雨季的考验，目前边坡稳定、铁路运营良好。

Case Study on the Design of Highly Swelling Soil High Road Cutting Slope in Yunnan Region

As for the case, both sides of the road cutting on Kunming southeast railway are highly swelling soil road cutting high slope. Various measures have been adopted for comprehensive support and protection design, such as earth-retaining wall, anchor pile, anchor frame beam, shrub-grass protection slope and supporting seeping grooves. Such design is a typical representative for highly swelling soil excavation slope treatment in the obvious climate features region with high groundwater level. Two years after the completion of the project, it has already undergone three rainy seasons. Currently, the slope is stable and the railway operates well. The design thought, protection measures and issues for further consideration of this case can be referenced by peers in the design of similar projects.