Yichun Liu

Kunming University of Science and Technology

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Xinzhu Liu

Central University of Finance and Economics

Huy Tran-Manh

Itasca Consultants (France)

Jean Sulem

École nationale des ponts et chaussées

Demei Sun

Harbin Engineering University

Emmanuel Humbert

Institut Denis Poisson

Didier Subrin

Centre d'études de l'emploi

Cong Peng

Central South University

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Centre National de la Recherche Scientifique

Laboratoire Navier

École nationale des ponts et chaussées

Université Paris Cité

Central University of Finance and Economics

Linyi University

Jilin International Studies University

Itasca Consultants (France)

Université Gustave Eiffel

Institute of Geotechnics of the Slovak Academy of Sciences

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Deep Structural Features of Ore-bearing Kimberlite in the North China Platform

Shigen-Chishitsu (1993)

Demei Sun Xinzhu Liu Cong Peng Yichun Liu

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10.11456/shigenchishitsu1992.43.325

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Time-Dependent Behavior of Saint-Martin-La-Porte Exploratory Galleries: Field Data Processing and Numerical Modeling of Excavation in Squeezing Rock Conditions

International Journal of Geomechanics (2021)

Yichun Liu Jean Sulem Didier Subrin Huy Tran-Manh Emmanuel Humbert

Field monitoring programs (e.g., convergence measurements and stress measurements in the support system) play an important role in following the response of the ground and of the support system during and after excavation. They contribute to the adaptation of the excavation and support installation method and the prediction of the long-term behavior. In the context of the Lyon–Turin link project, an access gallery (SMP2) was excavated between 2003 and 2010, and a survey gallery (SMP4) has been excavated since 2017. Both tunnels are excavated in Saint-Martin-la-Porte (France) across a strongly tectonized Carboniferous formation, which is highly fractured and heterogeneous. Squeezing behavior has been observed and led to the instability of the support system and of the tunnel face in various locations. Based on the knowledge gained from field data processing and numerical modeling in SMP2, new field data are analyzed for SMP4, which is excavated at a much deeper depth, with a different orientation and with different excavation methods. Numerical modeling of the various profiles of SMP4 considering the excavation stages and the specific yielding support is presented, which predicts the time-dependent response of the tunnel.

10.1061/(asce)gm.1943-5622.0002200

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