冰川滑坡区域地面交通线路走廊识别  

Corridor Identification of Ground Transportation in Glacier Landslide Zone

作　　者：曾勇[1] 贺燚 龚雷 单海东 宋洪锐 ZENG Yong;HE Yi;GONG Lei;SHAN Haidong;SONG Hongrui(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道标准设计》2022年第8期12-18,共7页Railway Standard Design

基　　金：四川省科技计划项目(2019YFG0460)。

摘　　要：随着交通路网不断向高海拔山区扩展,冰川滑坡灾害对地面交通线路存在较大安全威胁。为有效解决冰川滑坡地带地面交通选线问题,从冰川滑坡机理出发,建立其易发性分析指标体系,提出其易发指数计算方法,并在通行风险计算、风险距离计算、廊道分析及阈值选取的基础上,提出冰川滑坡地带地面交通走廊识别方法。分析结果表明,研究区域既有路网途经中等及以上风险区面积占比超过40%,而采用文中方法识别得到的走廊面积占比仅为1.65%;与未考虑冰川因素得到的传统分析方法相比,冰川走廊的中等和较高风险区经行面积减少量均超过90%,高风险区经行面积为0,明显低于传统走廊通行冰川滑坡区域的安全风险;提出的走廊识别方法能够实现冰川滑坡区域减灾选线,可为此区域线路方案设计提供一定参考。With the continuous expansion of the transportation network to high-altitude mountainous areas, glacier landslide disasters pose a greater safety threat to the ground transportation lines. In order to effectively solve the problem of surface transportation route selection in the glacier landslide zone, a susceptibility analysis index system is established based on the mechanism of glacial landslides, and its susceptibility index calculation method is proposed. The identification method of ground transportation corridor in glacial landslide zone is proposed on the basis of traffic risk calculation, risk distance calculation, corridor analysis and threshold selection. The analysis results show that the existing road network passing through the medium and above risk areas accounts for more than 40% in the study area, while the area of the corridor identified by the method accounts for only 1.65%. Compared with the glacier corridor, the reduction in the transit area of the medium and high risk areas of the Glacier Corridor is more than 90%, and the transit area of the high-risk area is 0, which is significantly lower than the safety risk of the glacier landslide zone of the traditional corridor. The corridor identification method proposed in the paper can realize the disaster reduction route selection in the glacier landslide zone, which can provide a useful reference for the design of the regional route plan.

关 键 词：冰川滑坡 易发性分析 地面交通 选线 线路走廊 

分 类 号：U212.32[交通运输工程—道路与铁道工程]