Study on the Stratum Deformation Caused by Tunnel Excavation with Different Division of Cross-Section
Publication: Recent Advancement in Soil Behavior, in Situ Test Methods, Pile Foundations, and Tunneling: Selected Papers from the 2009 GeoHunan International Conference
Abstract
Sequential excavation method is often used in urban tunnel construction. Based on the stochastic medium theory and according to the stratum deformation caused by element excavation, the stratum deformation united calculating equation under this excavation method is studied, which can take into account the development course of the deformation with the different tunnel section excavation. Then the time-space rules of the stratum deformation caused by tunnel excavation with different division of cross-section are discussed. The maximum of stratum deformation and curvature arise after some part of the whole tunnel, rather than the whole tunnel section has been excavated. Double-sidewalls heading excavation method has more control effect on stratum deformation than central departure excavation method. The study achievement can provide scientific basis for controlling the stratum deformation caused by tunnel construction, and protecting the safety of the buildings and pipelines around the tunnel.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Construction engineering
- Construction methods
- Continuum mechanics
- Cross sections
- Curvature
- Deformation (mechanics)
- Engineering fundamentals
- Engineering mechanics
- Excavation
- Geometry
- Geotechnical engineering
- Infrastructure
- Mathematics
- Probability
- Solid mechanics
- Stochastic processes
- Structural mechanics
- Tunnels
- Urban and regional development
- Urban areas
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