西藏拉萨市道路损坏的类型及防治

A Brief Discussion on the Types and Prevention of Road Damage in Lhasa, Tibet

西藏地处我国西南边陲,位于青藏高原的西南部,平均海拔在4 000m以上。拉萨市则是西藏自治区的首府,全年多晴朗天气,降雨稀少,紫外线强,素有"日光城"的美誉。基于此,本文以高原环境紫外线辐射强烈、昼夜温差大、土质差、路基不稳、冻融等诸多不利因素为基础,探索西藏拉萨市道路损坏的类型、原因及其防治,以便在道路建设的过程中采取相应的措施,从根本上防止道路损坏。经过大量调研发现,拉萨市道路主要存在路面沉降、路面局部塌陷、路面老化、车辙等问题。因此,分析道路损坏的类型并提出其防治建议,对从道路建设上实现其养护目的,增长其使用寿命,保障人们的出行安全具有十分重要的意义。

The city of Lhasa is the capital of Tibet autonomous region. It has sunny weather throughout the year. There is little rain and strong ultraviolet rays. Based on this, this paper explored the types, causes and prevention of road damage in Lhasa city of Tibet on the basis of strong ultraviolet radiation in the plateau environment, large diur- nal temperature difference, poor soil quality, unstable roadbed, freeze-thaw and other adverse factors, so as to take corresponding measures in the process of road construction to prevent road damage fundamentally. After a large num- ber of route surveys, it was found that the roads in Lhasa were mainly damaged by road subsidence, local road col- lapse, road aging and ruts. Therefore, it is of great significance to analyze the types of road damage and put forward suggestions for its prevention and control, so as to realize the purpose of its maintenance from road construction, in- crease its service life and guarantee people＇s safety of travel.