铁道标准设计2019，Vol.63Issue(1)：103-110,8.DOI:10.13238/j.issn.1004-2954.201803050007
相依性条件下滨海软土隧道盾构施工渗漏水风险评价
Risk Assessment of Leakage Water in Shield Construction of Coastal Soft Soil Tunnel under Dependent Condition
摘要
Abstract
The coastal areas are mostly soft soils with marine and lacustrine deposits, which results in difficult construction due to serious leakage of water. Therefore, the risk of leakage water in the shield construction process should be evaluated to ensure the safe construction of the tunnel. This paper constructs a three-level indicator system for risk assessment of leakage water, combines the Cloud model with Copula function. Two-dimensional and three-dimensional Cloud-Copula models are constructed based on the Copula function to treat dependently the related risk factors in risk indicators, and on the Cloud theory's advantages in the treatment and conversion of qualitative and quantitative concepts. With reference to Ningbo Rail Transit Line No. 1, the Cloud-Copula model is used to calculate the degree of membership of the second-level indicators for each risk level, and the more dangerous second-level indicators are determined to be grouting quality, sealing strips, and lining concrete waterproof. The D-S evidence theory is used to carry out evidence fusion to determine the risk status of leakage water damage in the detection zone, but there is a trend toward the development of basic safety status. By strengthening the monitoring of the more dangerous indicators, the leakage water can be effectively controlled, providing a new method for risk assessment and management of leakage water in the construction process of soft soil shield tunnels.关键词
滨海软土/盾构隧道/渗漏水风险评价/指标体系/云-Copula模型/D-S证据融合Key words
Coastal soft/Shield Tunnel/Leakage water risk assessment/Index system/Cloud-Copula model/Evidence fusion分类
交通工程引用本文复制引用
吴贤国,张文静,张立茂,姚春桥,曾铁梅..相依性条件下滨海软土隧道盾构施工渗漏水风险评价[J].铁道标准设计,2019,63(1):103-110,8.基金项目
国家重点研发项目(2016YFC0800208) （2016YFC0800208）
国家自然科学基金(71571078,51778262,51708241) （71571078,51778262,51708241）
