During the construction of expressway, the excavation of slope destroys the original landform, blocks the hydrological network in the region, and easily causes water and soil loss, which not only damages the local ecosystem, but also affects the road operation. Therefore, it is of great significance to study the optimization design of the subgrade slope of mountainous expressway and the protection of the natural ecological environment. This paper discusses the optimization design of mountain expressway(ME) based on natural environment protection(NEP). The characteristics of ME slope and the coordinated development of NEP and ME are briefly analyzed; This paper analyzes the role of NEP in the optimal design of MEs, and probes into the optimal design of MEs; This paper comprehensively evaluates the quality and effect of ecological protection(EP) project for subgrade slope of ME from four aspects of slope protection function, ecological benefit, landscape effect and construction situation, and verifies the effectiveness of the optimized design of ME based on NEP proposed in this paper.

Jumshaid Asghari. Mountain Highway Design based on Natural Environment Protection. Nature Environmental Protection (2020), Vol. 1, Issue 3: 37-46. https://doi.org/10.38007/NEP.2020.010305.

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