唐靖武 田榮燕 陳紅 蘇江

摘 要:西藏地處我國西南邊陲,位于青藏高原的西南部,平均海拔在4 000m以上。拉薩市則是西藏自治區的首府,全年多晴朗天氣,降雨稀少,紫外線強,素有“日光城”的美譽。基于此,本文以高原環境紫外線輻射強烈、晝夜溫差大、土質差、路基不穩、凍融等諸多不利因素為基礎,探索西藏拉薩市道路損壞的類型、原因及其防治,以便在道路建設的過程中采取相應的措施,從根本上防止道路損壞。經過大量調研發現,拉薩市道路主要存在路面沉降、路面局部塌陷、路面老化、車轍等問題。因此,分析道路損壞的類型并提出其防治建議,對從道路建設上實現其養護目的,增長其使用壽命,保障人們的出行安全具有十分重要的意義。
關鍵詞:道路損壞;道路養護;路面老化;防治建議
中圖分類號:U418.6 文獻標識碼:A 文章編號:1003-5168(2018)23-0121-03
A Brief Discussion on the Types and Prevention of
Road Damage in Lhasa, Tibet
TANG Jingwu1,2 TIAN Rongyan1,3 CHEN Hong4 SU Jiang1
(1.Tibet University, Lhasa Tibet 850000; 2.Tibet Kumquat Intelligent Technology Co. Ltd.,Lhasa Tibet 850000;3.Southeast University, Nanjing Jiangsu 211189;4.Sichuan Vocational College of Architecture, Deyang Sichuan 618000)
Abstract: 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 diurnal 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 number of route surveys, it was found that the roads in Lhasa were mainly damaged by road subsidence, local road collapse, 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, increase its service life and guarantee people's safety of travel.
Keywords: road damage;road maintenance;pavement aging;suggestions of prevention and cure
1 研究背景
道路是我國現代化建設的重要基礎設施。隨著經濟技術的飛速發展,我國道路建設越來越受到重視[1],新農村建設中,黨中央、國務院及地方各級政府把鄉、村、戶路路通工程建設作為一件大事來抓,邊遠地區的新疆、西藏等地也在大量興建道路,為解決人們“出行難、行路難”問題提供了必要保障。“十二五”規劃時期,西藏道路總里程達到7.8萬km,“十三五”期間還將大量建設立體交通網絡。道路的發展模式也逐漸由建設轉變為養護,因此,道路的養護與建設并重,從道路建設中實現其養護顯得尤為重要[1]。
拉薩市位于西藏高原的中部,喜馬拉雅山脈北側,海拔3 650m,地處雅魯藏布江支流拉薩河中游河谷平原,全年多晴朗天氣,降雨稀少,年日照時間高達3 000h,紫外線輻射強烈,素有“日光城”的美譽[2]。……