Modeling of the rock mass deformations effect on deep metro main line tunnels

DOI: https://doi.org/10.30686/1609-9192-2024-5S-190-196

Читать на русскоя языкеS.A. Zhukov1, M.A. Bubnov2, M.S. Naumov3
Mining Institute Kola Science Centre of the Russian Academy of Sciences, Apatity, Russian Federation
Russian Mining Industry №5 / 2024 p.190-196

Abstract: The article discusses the effects of soil mass movement on deep metro main line tunnels. The study is based on the data obtained as part of a field survey of a tunnel section that was exposed to a non-routine event. Displacements of the soil mass surrounding the tunnel during its operation may occur due to disturbance of the groundwater mode caused by abundant water inflow into the tunnel. Solution cavities, especially those filled with water, can also cause deformation of the tunnels during operation, resulting in water inflow into the tunnel. If these cavities are filled with loose sediments, this can also cause significant local loads on the tunnel lining. A number of numerical experiments were carried out to assess the possibility of horizontal displacements of the tunnels, which involved modelling of a 25 m long section of the soil mass enclosing the tunnel. The first stage involved modelling of the soil shrinkage due to progressive shield tunnelling, while the second stage simulated the horizontal displacement front. Dependences of the lining displacement on the distance to the displacement front of the soil mass have been established. Numerical experiments showed that the main geological processes that could lead to deformation of the tunnels occurred at a distance of more than 20 m from the edge of one of the tunnels.

Keywords: metro, main line tunnel, rock mass displacement, soil mass, numerical modeling

For citation: Zhukov S.A., Bubnov M.A., Naumov M.S. Modeling of the rock mass deformations effect on deep metro main line tunnels. Russian Mining Industry. 2024;(5S):190–196. (In Russ.) https://doi.org/10.30686/1609-9192-2024-5S-190-196

Article info

Received: 27.08.2024

Revised: 23.10.2024

Accepted: 26.10.2024

Information about the authors

Sergey A. Zhukov – General Director, Mosinzhproekt JSC, Moscow, Russian Federation; https://orcid.org/0009-0007-6492-6696; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Mikhail A. Bubnov – Cand. Sci. (Eng.), Associate Professor, Advanced engineering school, Mendeleev Russian University of Chemical Technology, Moscow, Russian Federation; https://orcid.org/0009-0006-5041-8597

Maxim S. Naumov – Lead Engineer of the Department, Moscow Automobile and Road Construction State Technical University, Moscow, Russian Federation; https://orcid.org/0009-0000-1148-1530

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