高寒高海拔地区公路建设生态防护技术

Ecological protection technology for highway construction in high latitude and cold regions

高寒高海拔地区气候条件恶劣,高寒缺氧,地质水文条件复杂,生态环境脆弱,公路建设中的环境保护工作要求高、难度大。且现行较多公路工程圬工防护设计与其周边环境的融合度较差,视觉污染较大;同时,公路圬工防护工程因受冻融破坏影响,耐久性非常差,运营维护工作量大、成本高,极易形成后期水土流失等环境破坏。本文根据在全线平均海拔4100m以上、我国首条高寒高海拔多年冻土地区高速公路-青海省共和至玉树高速公路建设中的创新和成功实践,总结在高寒高海拔地区公路建设中实施的生态防护技术。

The environmental protection work in highway construction is demanding and difficult due to the harsh climatic conditions,high latitude and cold regions,complex geological and hydrological conditions,and weak ecological environment.In addition,the existing protection design of highway engineering masonry has poor integration with its surrounding environment and great visual pollution.At the same time,highway masonry protection engineering due to the impact of freeze-thaw damage,durability is very poor,operation and maintenance of large workload,high cost,and easy to form late soil erosion and other environmental effects.Based on the innovation and successful practice in the construction of Chinas first expressway fromGonghe to Yushu in Qinghai Province,which has an average elevation of 4100 meters above the whole line and is the first expressway in alpine and high-altitude permafrost region,this paper discusses the comprehensive practice in the construction of highway in alpine and high-altitude permafrost region and apply ecological protection technology.