摘要
川藏公路林芝至八宿段地质灾害尤为发育,严重影响了川藏公路的安全运行。为有效防灾与减灾,本文立足于野外考察和对已有资料的统计分析,对该地区开展了区域性地质灾害研究。研究表明,研究区域地质灾害有以下几个显著特征:在分布上,灾害发育密集、类型多、分段性显著;成因复杂的松散堆积体是地质灾害的主要物质基础;强烈的水岩作用和内外动力耦合作用是该地区地质灾害形成、发生的重要因素。本文为该区域地质灾害的成灾机理及其防治措施的研究提供了科学依据。
Geological hazards along the section from Nyingchi to Baxoi of the Sichuan-Tibet Highway are especially severe and have seriously affected the safe riding along the highway. In order to prevent and reduce disasters effectively, regional geological hazards have been studied in the area on the basis of the field investigations and statistic analysis of available data. The results show the following three prominent characteristics of hazards in the area: in terms of distribution geologic hazards are close-spaced, have many types and are notably divided into sectors; loose Quaternary deposits of complex origin form the main material foundation of geological hazards; intense water-rock interaction and coupling of endogenic and exogenic forces are the important factors for the formation and occurrence of geological hazards in the area. This paper provides a scientific basis for the study of the mechanism of occurrence of the geological hazards in the area and measures for their prevention and control.
出处
《地质力学学报》
CSCD
2004年第1期33-39,共7页
Journal of Geomechanics
基金
国家重点基础研究(973)项目(2002CB412702)
中科院知识创新工程项目(KJCX2 SW L1 1)资助。
关键词
地质灾害
形成机制
川藏公路
水岩作用
geological hazard
Sichuan-Tibet Highway
coupling of endogenic and exogenic dynamic forces
water-rock interaction
