人民长江2024，Vol.55Issue(4)：184-191,8.DOI:10.16232/j.cnki.1001-4179.2024.04.024
湿陷性黄土区输水隧洞盾构施工风险评估
Risk assessment of water conveyance tunnels construction by shield in collapsible loess area
摘要
Abstract
In order to improve the safety assessment reliability of water conveyance tunnel construction by shield in collapsible loess area,firstly a relatively perfect construction safety risk assessment index system was constructed from four aspects:personnel management,mechanical materials,construction technology and construction environment.Secondly,the grey-DEMATEL method was used to process the centrality to obtain the risk index weight.Thirdly,based on the two dimensions of risk occurrence proba-bility and risk loss degree,a two-dimensional cloud assessment model was constructed.The occurrence probability was deter-mined by the combination of subjective and objective methods,and the loss degree was determined by improving the radar chart method from five aspects:casualties,economic losses,schedule delay,functional defects and environmental impact.Finally,the e-valuation model was applied to the safety assessment of X water conveyance tunnel construction of the Hanjiang-to-Weihe River Diversion Project.The application results showed that the construction risk was small,only grade Ⅱ,which were in line with the engineering practice,verifying the feasibility and effectiveness of the evaluation model.The research results can provide reference for the safety risk assessment of similar water conveyance tunnels construction by shield in collapsible loess area.关键词
输水隧洞/盾构施工/风险评估/湿陷性黄土区/灰色-DEMATEL/二维云模型Key words
water conveyance tunnel/shield construction/risk assessment/collapsible loess area/grey-DEMATEL/two-dimensional cloud model分类
水利科学引用本文复制引用
张勇,刘琛,牟艳祥..湿陷性黄土区输水隧洞盾构施工风险评估[J].人民长江,2024,55(4):184-191,8.基金项目
陕西省自然科学基础研究计划项目(2021JLM-52) （2021JLM-52）
