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文章针对目前膨胀土地区公路边坡防护中存在的问题,提出采用土工格室植被护坡柔性防护体系的方法进行防护。通过对土工格室植被护坡防冲刷、植被加筋机理的理论分析,给出了平铺式和叠置式植被护坡结构型式、适用条件、设计方法并指导工程实践,确定了相关参数的取值范围。工程实践表明:与常用圬工结构刚性防护相比,土工格室植被护坡柔性防护不但可以减弱膨胀土边坡的干湿循环引起的胀缩变形、减小冲刷,而且能降低造价、恢复生态环境、美化公路沿线景观,是一种较好的膨胀土地区公路边坡防护型式。
In this paper, according to the existing problems in slope protection of highway in expansive soil area, the paper puts forward the method of protection by using the protective system of geocell plant slope protection. Through theoretical analysis of anti-erosion and vegetation reinforcement mechanism of geocell vegetation revetment, the types, applicable conditions and design methods of tiled and stacked vegetation revetment are given and engineering practice is confirmed, and the range of relevant parameters is determined . The engineering practice shows that compared with the rigid protection of common masonry structure, the flexible protection of geogrid vegetation slope protection can not only reduce the deformation and deformation caused by the wetting and drying cycle of the expansive soil slope, reduce the scouring, but also reduce the cost and restore the ecological environment , Beautify the landscape along the highway, is a better type of highway slope protection in expansive soil areas.