川藏公路G317线路基水毁危险度分段研究  

Risk Degree of Water Damages along the Highway G317 in Tibet

作　　者：程尊兰[1] 耿学勇[1] 党超[1] 刘晶晶[1] 

机构地区：[1]中国科学院.水利部成都山地灾害与环境研究所,四川成都610041

出　　处：《灾害学》2006年第4期18-23,共6页Journal of Catastrophology

基　　金：国家自然科学基金资助项目(40371016);交通部西部交通建设科技项目(200431879255)

摘　　要：G 317线是我国西藏地区最主要的干线公路之一,是内地与西藏地区经贸流通的重要通道。但是西藏地区环境恶劣,公路路基水毁灾害非常频繁,常常影响公路通行。本文从G 317线公路路基水毁的实地调查资料出发,综合分析影响路基水毁发育的因素,对其水毁危险性进行分段研究。经过研究将G 317线分为极度危险段、高度危险段、中度危险段、低度危险段、微度危险段和暂无危险段6个路基水毁危险度级别,并对每个危险度级别进行评述。The highway G317 is one of the key lines in Tibet and the major trade passage between Tibet and inland. However, water damages are frequent and severe due to the bad conditions of environment. In this paper, we analyze the risk of water damages to roadbed along the line on basis of field surveys and environmental conditions. Six grades of the risk have been identified for different sections： the highest grade, high grade, moderate grade, low grade, tiny grade, and null grade. Each grade of hazard has been evaluated.

关 键 词：川藏公路 路基水毁 危险度分段 G317线 

分 类 号：U416.1[交通运输工程—道路与铁道工程]