震后山区公路地质灾害风险评估体系研究——以川九公路震后恢复重建为例  

Risk evaluation system for geological disasters of highways in mountainous regions after earthquakes:a case study of the postearthquake restoration and reconstruction of the Chuanzhusi—Jiuzhaigou highway

作　　者：蒋瑜阳 向波 王东 王毅 JIANG Yuyang;XIANG Bo;WANG Dong;WANG Yi(Sichuan Highway Planning,Survey,Design and Research Institute Ltd.,Chengdu 610041,Sichuan,China)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,四川成都610041

出　　处：《地震工程学报》2023年第5期1026-1034,共9页China Earthquake Engineering Journal

基　　金：四川省交通科技项目(2016 B2-2,2018-A-01,2021-A-06);四川省公路规划勘察设计研究院有限公司科研项目(2022-YL-03)。

摘　　要：从公路安全运行迫切需求出发,着眼于震后公路沿线地质灾害发育程度,选取山区公路地质灾害风险评价指标及其权重,并结合地质灾害危险性与防护工程新技术,建立山区公路地质灾害风险评估体系。该评估体系将灾损公路分两阶段进行评分,两阶段根据相应的评价指标和权重系数,计算出灾害风险总得分,从而确定威胁公路的地质灾害风险等级。以典型的泥石流灾害为例开展工程案例分析,验证山区公路地质灾害风险评估体系的适用程度。结果表明,该评价体系在川九公路艰险路段震后恢复重建工作中有较好的实用性和可靠性。There is an urgent need for the safe operation of highways,considering the development degree of geological disasters along the highway after earthquakes.In this work,a risk evaluation system based on the risks of geological disasters and novel protection engineering technology was established for highways in mountainous areas.In the proposed evaluation system,the damaged highway was scored in two stages,and the total disaster risk score was calculated from the corresponding evaluation index and weight coefficient of each stage to determine the geological hazard risk level threatening the highway.As a case analysis,the proposed system for geological disasters of highways in mountainous areas was applied on the Chuanzhusi—Jiuzhaigou highway after a typical debris flow disaster to confirm its applicability.The results exhibited that the evaluation system proposed in this work has good practicability and reliability in the reconstruction of the Chuanzhusi—Jiuzhaigou highway after the earthquake.

关 键 词：山区公路 地质灾害 风险评估 泥石流 川九公路 恢复重建 

分 类 号：P694[天文地球—地质学]