Abstract
The side ditch is a longitudinal ditch set up on both sides of the road cutting to collect and remove precipitation from the road surface, road shoulder and side slope. It is the most common drainage facility in highway construction. However, the existing side ditches are generally wide, large, and deep, with a single structure, and poor coordination with the environment along the line. For this reason, this paper proposes a new type of permeable ecological side ditch structure design. Under the premise of ensuring the basic functions of the side ditch, this design effectively solves the problem that the edge of the side ditch is susceptible to erosion due to accumulated rainwater or frost heave in the alpine areas with high groundwater level. At the same time, to maximize the strength of the side ditch and enhance its ecological function.
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