Study On The Ecological Protection Techniques Of Abrupt Rock Slope In High-Cold Area Of West Sichuan In China

Under the influence of corrosion by rainwater and frost-melt, collapse and landslip, so far as to debris flow, occurs badly on the abrupt rock slope of high-altitude area and damages its ecological environment. So it is significant to study slope protection theory and method, which is most difficult ecological protection techniques of slope as ecological restoration techniques of the abrupt rock slope.With the guidance of foundation theory such as geotechnical engineering, garden vegetation, pedology, soil magnetism and environment engineering and the base of slope ecological protection, this paper studies ecological material protection techniques which is suitable for abrupt rock slope. According to climate and geography character in high-cold area, by indoor trial, the paper researches the material component impact on the physical and chemical property and presents reasonable component mixture ratio of the ecological material and analyses the aggregates, drought resistance and fertilizer effect of the material. The field trial, on the k7+008~k7+053 slope of the west approach at Zhegu mount tunnel Road 317, evaluates fully construction techniques and protection function of the ecological material. In a word, there are some achievements as following:1)Ecological restoration of the abrupt rock slope in high-cold area should adopt junior planting method.2)The grass seeds for protecting slope in high-cold area should be anti-frost, anti-meager and extensive farming. There are some grass seeds recommended for ecological restoration , for example, Kentucky bluegrass, ryegrass, coronilla, festuca arundinacea, sword-bamboo and euonymus fortunei.3)Regarding JBA,YQS, and CXL fertilizer as addition agent of the ecological material, magnetic fertilizer as ecological fertilizer, the material take on character such as water holding capacity, fertilizer retaining, prime cluster structure and binding power, which realize the destination of ecological protection of the abrupt rock slope.4)Ecological material protection slope techniques, which is suitable for abrupt rock slope in high-cold area, has been formed elementarily.