Study on Thick-lift Base Material and Seed Spraying for Side Slope Engineering Protection

Abstract

The arid area highway roadbed slope vegetation restoration presents a challenge. The concept, the principle, the material composition, and the construction craft of the thick-lift base material and seed spraying for the side slope protection are analyzed in this paper. Through the project practice, the spraying base material and seeds suitable for the Xining area are proposed, including the plant material of alfalfa, the lemon strip, the old awn wheat, the alkali grass, China Tall fescue, the alkali cogon grass, and so on, for the slope vegetation restoration and the plant choice principle. The suitable mixing ratio is analyzed as well as the spraying, the coverage, and the later period management. It is an effective technology to address lithoid slope ecology and the vegetation restoration, especially for large slopes or difficult areas for construction.