厚层基材喷播边坡防护技术研究

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

干旱半干旱地区高速公路路基边坡植被恢复是目前的一项技术难点。分析了厚层基材喷播的概念、原理、材料组成及施工工艺。通过项目实践,提出了适宜西宁地区厚层基材喷播边坡植被恢复的植物材料紫花苜蓿、柠条、老芒麦、披碱草、中华羊茅、碱茅等,分析了植物选择的原理及适当配比,并阐述了厚层基材喷播、覆盖、后期管护等重点和难点技术。能有效解决石质边坡生态和植被恢复的难题。特别是为在高大边坡或难施工、难养护地区提供了实践性技术指导。

The arid half arid area highway roadbed slope vegetation restoration is a challenge. The authors analyzed 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. Through the project practice, the spraying base material and seeds suitable for the Xining area were proposed,including the plant material of alfalfa, the lemon strip, the old awn wheat, the alkali grass, China Tall revue, the alkali cogon grass and so on, for the slope vegetation restoration and the plant choice principle and the suitable mixing ratio analyzed as well as the spraying, the coverage,the later period management.lt is an effective technology to address lithieal slope ecology and the vegetation restoration specially for big slope, or difficult area for construction.