高寒湿地区域公路建设水土流失与水土保持研究

Analysis of Water and Soil Erosion and Research on Water and Soil Conservation in Construction of Highway on High Cold Wetland

公路建设水土流失属典型的人为加速侵蚀类型,其类型、程度和强度与主体工程建设有直接的因果关系,在空间上表现为沿公路呈线形分布,在时间上与主体工程具有高度同一性。在对213国道郎川段(郎木寺至川主寺)所处的高寒地区进行的脆弱环境条件实地调查和现场测量的基础上,系统地分析了公路建设造成的水土流失成因、特点及防治,结合工程设计及施工过程中遇到的实际问题,提出了相应的水土保持措施,以期搞好高寒湿地区域公路水土保持工作,从而有效地改善公路沿线的生态环境。

Water and Soil erosion in construction of highway is representative type of man-made accelerated erosion. The type, situation and intensity of water and soil erosion have direct relation to the construction of principal part of the highway. Water and soil erosion shows discrete distribution along the highway in space and has great identities with the construction of principal part in time. Based on it, the causes, characteristics and preventions of water and soil erosion are ascertained by surveying the fragile environment area where the Lang-Chuan Section of the National Road 213 （Langmusi to Chuanzhusi） is located on the high cold wetland in China. Combined with the actual problems in engineering design and construction, the corresponding water and soil conservation measures are proposed to do well the water and soil conservation of highway construction on the high cold wetland, and improve effectively the ecological environment along the highway.