A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence Law of Urban Shallow-buried Tunnel Buried Depth on Land Subsidence
Objective The buried depth of tunnel is one of the important factors contributing to land subsidence induced by tunnel construction, especially in urban underground space where subtle environmental changes are prone to cause safety hazards. Therefore, it is necessary to investigate the influence law of urban shallow-buried tunnel buried depth on land subsidence. Method A two-dimensional modified model is proposed，regarding the ratio of tunnel radius to buried depth for land subsidence theoretical solution. Taking a tunnel under construction in Chongqing as example, with model tests, the deformation law of land subsidence under different buried depth conditions is analyzed, and the rationality and feasibility of the proposed modified model are verified in predicting land subsidence. Result & Conclusion With an increase in tunnel buried depth, the overall trend of land subsidence decreases, and the width of subsidence trough increases gradually, while the maximum subsidence amount along the tunnel axis decreases gradually. Compared to the original theoretical solution and Peck′s formula solution, the modified subsidence prediction model aligns closer with the curves obtained from tests. Moreover, the modified model demonstrates better applicability under different tunnel buried depth conditions. During the construction of shallow-buried tunnel, it is recommended to expand the scope of control protection zone as tunnel buried depth increases.
Influence Law of Urban Shallow-buried Tunnel Buried Depth on Land Subsidence
Objective The buried depth of tunnel is one of the important factors contributing to land subsidence induced by tunnel construction, especially in urban underground space where subtle environmental changes are prone to cause safety hazards. Therefore, it is necessary to investigate the influence law of urban shallow-buried tunnel buried depth on land subsidence. Method A two-dimensional modified model is proposed，regarding the ratio of tunnel radius to buried depth for land subsidence theoretical solution. Taking a tunnel under construction in Chongqing as example, with model tests, the deformation law of land subsidence under different buried depth conditions is analyzed, and the rationality and feasibility of the proposed modified model are verified in predicting land subsidence. Result & Conclusion With an increase in tunnel buried depth, the overall trend of land subsidence decreases, and the width of subsidence trough increases gradually, while the maximum subsidence amount along the tunnel axis decreases gradually. Compared to the original theoretical solution and Peck′s formula solution, the modified subsidence prediction model aligns closer with the curves obtained from tests. Moreover, the modified model demonstrates better applicability under different tunnel buried depth conditions. During the construction of shallow-buried tunnel, it is recommended to expand the scope of control protection zone as tunnel buried depth increases.
Influence Law of Urban Shallow-buried Tunnel Buried Depth on Land Subsidence
CAO Yuanjun (author)
2024
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
Underneath-buried shallow-buried bridge expansion device
| European Patent Office | 2023
Blasting Vibration Analysis in Shallow Buried Tunnel Excavation
| British Library Conference Proceedings | 2006
Shallow-buried unsymmetrical-pressure tunnel portal slope protection structure
| European Patent Office | 2023
Shallow-buried small-spacing rock-soil tunnel construction method
| European Patent Office | 2024
Construction method for shallow-buried unsymmetrical-pressure tunnel portal
| European Patent Office | 2022