水资源与水工程学报2023，Vol.34Issue(6)：173-181,9.DOI:10.11705/j.issn.1672-643X.2023.06.21
基于改进G2-CRITIC-TOPSIS模型的寒区明渠冻害风险评估
Frost-heaving damage risk assessment for open canals in cold regions using improved G2-CRITIC-TOPSIS model
摘要
Abstract
Open canals in cold regions are prone to frost-heaving damage in winter,which affects the long-term safety,durability,and stability of the project.Accurate and reasonable risk assessment of frost-heaving damage is crucial to the safe operation of the project.In view of this,we analyzed the character-istics and types of canal frost-heaving damage and combined the information from field research,literature research and experts consultation,then selected 15 secondary indicators from 3 dimensions of frost-heav-ing damage subject,natural conditions,supervision and prevention to constitute an evaluation index sys-tem,by which each index was studied and quantified.Then,the subjective and objective weights of the indicies were calculated by the improved G2-CRITIC method,the subjective and objective weight com-binations were assigned with the principle of minimum information entropy(MIE),and the values of ca-nal frost-heaving damage indicies were calculated by TOPSIS model.Finally,the risk level was deter-mined according to the relevant specifications and engineering practices.Taking a project in northern Xinjiang as a prototype,we selected four typical canal sections through a field survey,and applied the proposed model to the frost-heaving damage risk assessment and obstacle degree factor diagnosis for differ-ent canal sections.The results show that all the four canal sections are under different degrees of frost-heaving damage risk,which are evaluated to be gradeⅡor above,and some sections have serious frost-heaving damage,which is consistent with the actual situation.Weather,soil conditions and water re-charge conditions are the key influencing factors of canal frost-heaving damage due to their high weight and great influence.It is suggested that different measures should be taken to reduce the risk of frost-heaving damage at different canal sections based on their own characteristics of disaster-bearing body,natural conditions,supervision and prevention.This study can provide scientific references and a theoret-ical basis for frost-heaving damage risk assessment of canals in cold regions.关键词
输水渠道/冻害/风险评估/改进G2-CRITIC法/TOPSIS理论/寒区明渠Key words
water conveyance canal/frost-heaving damage/risk assessment/improved G2-CRITIC method/TOPSIS theory/open canal of cold region分类
建筑与水利引用本文复制引用
熊志豪,肖旻,吴浪,杨晓松,崔浩..基于改进G2-CRITIC-TOPSIS模型的寒区明渠冻害风险评估[J].水资源与水工程学报,2023,34(6):173-181,9.基金项目
国家重点研发计划重点专项(2017YFC0405100) （2017YFC0405100）
新疆生产建设兵团一师横向项目(SWJ2022KT23) （SWJ2022KT23）
国家自然科学基金项目(51641903,51869029) （51641903,51869029）
江西省教育厅科学技术研究项目(GJJ190621) （GJJ190621）
江西科技师范大学博士科研启动基金项目(2019BSQD11) （2019BSQD11）
