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《Chinese Journal of Underground Space and Engineering》 2013-01
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Analytical Prediction of Water Leakage into Shield Driven Tunnel in Saturated Clay

Ma Longxiang1,2,Zhang Dongmei 1,2(1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University, Shanghai 200092,China;2.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China)  
Leakage into shield-driven tunnel has a great influence on the tunnel's long-term behavior such as long-term settlement.Considering the characteristic of the shield-driven tunnel in soft soil,the assumption is proposed that the total water head on the external surface of the lining is an unknown parameter when the steady leakage reached.Based on this assumption,the solution for leakage field can be derived.The unknown total head on the external surface of the lining can also be derived by using the equation that the water inflow from the soil into the tunnel must be equal to the water inflow through the lining.And a close-formed solution for leakage field and water inflow into shield-driven tunnel is derived.The results derived in this paper is finally compared with the numerical simulation and the solution by Shin(2010),it shows that the analytical method is reasonable and reliable.
【Fund】: 上海市自然科学基金资助(No.12ZR1433600);; 长江学者和创新团队发展计划资助项目(IRT1029)
【CateGory Index】: U451
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