Preliminary Study on Ecological Restoration Technology of Highway Slopes in High Altitude Mountain Areas—Taking Gansu Zhuohe Expressway Phase I Project as an Example

Author:

Li Yongpeng,Bai Fuhong,Min Haifeng,Wang Liang

Abstract

Abstract This study focuses on the technical difficulties of ecological restoration of highway slopes in high-altitude mountainous areas. Based on the theory of ecological restoration, starting from the characteristics of the ecological environment of highway slopes and the current status of ecological restoration technology of highway slopes, combined with the first phase of the Zhuoni Hezuo Expressway project in Gansu Province, we conducted research on ecological restoration technology of highway slopes in high-altitude mountainous areas. Based on the characteristics of the project and the natural environment, On the basis of investigation and evaluation of slope restoration design, it was proposed to add local leguminous plant combinations, including Astragalus adsurgens, yellow clover, and small crown flower. Grass family plants were selected, including smooth bromegrass, drooping elymus, flat ice grass, Chinese fescue, and cold early maturing bluegrass. The plant combination design was carried out; At the same time, according to the characteristics of the slope, ecological protection technologies such as vegetation blanket, spraying thin soil, planting bags+hydraulic spraying+planting shrub seedlings have been proposed for the slope; And proposed requirements for surface soil utilization and plant maintenance. This study aims to explore a technical solution suitable for ecological restoration of highway slopes in the Gannan region, in order to improve the stability and erosion resistance of slopes, improve the ecological environment, and ensure the safe operation of highways. It has guiding significance for ecological restoration of highway slopes in high-altitude mountainous areas and can be used as a reference for research on rock slope restoration in other regions.

Publisher

IOP Publishing

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