基于AHP-CM的地铁隧道突水风险评估

Assessment of Water Inrush Risk in Subway Tunnels Based on AHP-CM

摘要:

隧道施工过程中常会发生突水灾害，对隧道开挖安全造成巨大威胁。以青岛地铁某区间隧道为工程背景，通过对评级层建立云模型，实现风险隶属度动态映射，形成了一种盾构隧洞突水灾害危险性等级评价新方法。筛选关键评价指标并对各致灾因子进行定量表征，使用层次分析法构建指标间的判断矩阵，通过对评级层建立云模型，使综合评价等级的隶属度更加客观。研究结果表明，青岛地铁隧道突水风险评估结果验证了盾构隧洞突水灾害危险性等级指标及评价方法的可靠性。对类似隧道工程施工有效预防突水灾害发生提供了新思路与新建议。

Abstract:

During the tunnel construction, the water inrush disasters often occur, posing a huge threat to the safety of tunnel excavation. Taking a tunnel section of Qingdao Metro as the engineering background, a new method for evaluating the risk level of water inrush disasters in shield tunnels has been developed by establishing a cloud model for the rating layer and dynamically mapping the risk membership degree. Key evaluation indicators are screened, and various hazard-causing factors are quantitatively characterized. The Analytic Hierarchy Process (AHP) is used to construct a judgment matrix among indicators. By establishing a cloud model for the rating layers, the membership degree of the comprehensive evaluation grade is made more objective. The research results indicate that the risk assessment of water inrush in Qingdao subway tunnels has verified the reliability of the risk level indicators and evaluation methods for shield tunnel water inrush disasters, which provides new ideas and suggestions for effectively preventing water inrush disasters in tunnel construction projects.