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川西地区古堰塞湖相地层为一套主要由粉砂质黏土、粉细砂等组成的半胶结特殊地层,力学强度较低,土壤贫瘠且较密实,开挖后边坡往往存在局部垮塌与自然植被恢复困难等问题,需做综合性的生态防护研究。通过调查分析该区自然环境,提出了以羊茅、箭竹等乡土植物为主的草、灌等相结合的植物配置方案,并针对坡比与稳定性不同的4类边坡,结合其地质与土壤特征,分别给出了相应的以稳定性防护为基础、土壤改良重建为核心的生态防护模式。
The ancient dammed lacustrine facies in western Sichuan is a set of semi-cemented formations mainly composed of silty clay, silty sand and so on. The mechanical strength is low and the soil is barren and dense. After excavation, the slopes often collapse locally and naturally Vegetation recovery difficulties and other issues, need to do a comprehensive study of ecological protection. Through the investigation and analysis of the natural environment in the district, the plant configuration scheme combining grass, irrigation and other native plants with fescue, arrow bamboo and other native plants was put forward. According to the four types of slope with different slope ratio and stability, Soil characteristics were given corresponding to the stability of the protection as the basis for soil improvement and reconstruction as the core of ecological protection mode.