摘要
泥石流岩土防治工程被广泛应用于泥石流灾害的治理,而工程的损毁程度会对工程的功能性产生一定的影响,并影响效益的持续发挥。文章以汶川为研究区域,选取18条泥石流沟的岩土防治工程作为研究对象,结合现场考察,对防治工程的损毁程度进行评价。评价指标体系总体上分为拦挡工程因子和排导工程因子2项,细化二级评价指标包括坝基损毁度、坝肩损毁度、坝体损毁度、基础冲刷度、结构冲击度、斜坡推力度等6项。运用模糊综合评价方法构建判断矩阵和隶属度函数,将损毁度等级划分为优、良、中、差四个等级。评价结果显示,除板子沟和登溪沟的防治工程损毁等级为差和中以外,其余泥石流沟内防治工程损毁等级均为良或优,且评价结果与现场考察一致。
Geotechnical control engineering is widely used in the treatment of debris flow disasters,and the damage degree of the engineering will have a certain impact on the functionality of the engineering.It affects the continuous exertion of benefits.This paper selects geotechnical control engineering of 18 debris flow gullies in Wenchuan area as the research objects,combined with field investigation,the damage degree of control engineering was evaluated.The system of evaluation index is generally divided into two factors:check dam factor and drainage channel factor.The secondary evaluation indexes are refined,including the damage degree of dam foundation,the damage degree of dam abutment,the damage degree of dam body,scouring degree of foundation,structural impact degree and slope thrust degree.The fuzzy comprehensive evaluation method is used to construct the judgment matrix and membership function,and the damage degree is divided into four grades:excellent,good,medium and poor.The evaluation results show that except for Banzi gully and Dengxi gully,the damage grades of other debris flow control engineering are good or excellent,and the evaluation results are consistent with the field investigation.
作者
张文涛
柳金峰
游勇
孙昊
杨华铨
芦明
Wentao ZHANG;Jinfeng LIU;Yong YOU;Hao SUN;Huaquan YANG;Ming LU(Key Laboratory of Mountain Hazards and Earth Surface Process,Chinese Academy of Sciences,Chengdu,Sichuan 610041,China;Chengdu Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu,Sichuan 610041,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《中国地质灾害与防治学报》
CSCD
2022年第4期77-83,共7页
The Chinese Journal of Geological Hazard and Control
基金
四川省应用基础研究项目(2019YJ0005)
国家重点研发计划课题(2020YFD1100701)
国家基金委面上项目(41772343)。
关键词
泥石流
岩土防治工程
损毁度
评价
模糊综合法
debris flow
geotechnical control engineering
damage degree
evaluation
fuzzy comprehensive evaluation method
