Field Test and Numerical Simulation Study on Water Pressure Distribution and Lining Deformation Law in Water-Rich Tunnel Crossing Fault Zones
Source abstract
Abstract
This study investigates the water pressure distribution and deformation patterns in tunnel linings within water-rich tunnels traversing fault zones, focusing on the Gudou Mountain Tunnel. The study utilized field tests and numerical simulations to assess the water pressure distribution around test sections. Following the confirmation of consistent water pressure distribution patterns from field tests and simulations, we analyzed the deformation patterns of tunnel linings at various water levels. The results showed that water pressure is highest at the tunnel’s inverted arch and arch foot, moderately high at the vault and spandrel, and lowest at the arch waist. The sections RK51 + 590 and LK51 + 640, located on opposite sides of a fault crush zone, experience high fragmentation of surrounding rock. This allows rainfall and reservoir water to seep through fractures, causing increased water pressure and significant deformation at the inverted arch of these sections. With rising groundwater levels, deformation intensifies at the inverted arch, arch foot, and vault. The appearance of macro-cracks in these critical areas leads to groundwater seepage through the cracks, severely impacting tunnel operations. Consequently, reinforcing the inverted arch, arch foot, and vault is crucial to reduce the risk of water leakage in the tunnel.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Geotechnical Engineering and Underground Structures · Civil and Geotechnical Engineering Research · Geotechnical Engineering and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Highway, Chang’an University, South Second Ring Rd., Yanta District, Xi’an 710064, China
References (27)
Show source-provided references
1. Existing Operational Railway Tunnel Water Leakage Causes and Remediation Technologies10.4028/www.scientific.net/AMR.1004-1005.1444 ↗
2. Risk assessment of water inrush in karst tunnels based on attribute synthetic evaluation system10.1016/j.tust.2013.05.001 ↗
3. Model test and numerical simulation research of water leakage in operating tunnels passing through intersecting faults10.1016/j.tust.2019.103134 ↗
4. Analysis of site investigation of cracking and leakage on arcade tunnel lining of Yunnan province
5. Statistics and Cause Analysis of Leakage Diseases in Operating Expressway Tunnels in Chongqing
6. Evaluation of high local groundwater inflow to a rock tunnel by characterization of geological features10.1016/j.tust.2010.11.007 ↗
7. Field experiments and numerical simulations for two types of steel tube lining structures under high internal pressure10.1016/j.tust.2021.104272 ↗
8. Investigation on seepage field distribution and structural safety performance of small interval tunnel in water-rich region10.1016/j.tust.2023.105172 ↗
9. Experimental simulation of seepage field distribution for small interval tunnel under varying-head infiltration10.1016/j.trgeo.2023.101029 ↗
10. Study of seepage field distribution and its influence on urban tunnels in water-rich regions10.1007/s10064-018-1417-0 ↗
11. Analysis of ground collapse caused by shield tunnelling and the evaluation of the reinforcement effect on a sand stratum10.1016/j.engfailanal.2020.104616 ↗
12. Li, D., Cheng, S., Liu, N., Liu, Z., and Sun, Y. (2023). Numerical Simulation Study on the Distribution Characteristics of Precipitation Seepage Field in Water-Rich Ultra-Thick Sand and Gravel Layer. Water, 15.10.3390/w15213720 ↗
13. Seepage field distribution and water inflow laws of tunnels in water-rich regions10.1007/s11629-020-6634-x ↗
14. Study on the Floating Law of Metro Segments in Water-Rich Sandy Silt and Silty Clay Strata10.1007/s12205-022-2139-1 ↗
15. Refined 3D modelling of spatial-temporal distribution of excess pore water pressure induced by large diameter slurry shield tunneling10.1016/j.compgeo.2021.104312 ↗
16. A novel method of imposing external water pressure to explore the failure behavior of railway tunnel linings10.1016/j.tust.2022.104942 ↗
17. An analysis method for evaluating the safety of pressure water conveyance tunnel in argillaceous sandstone under water-weakening conditions10.1016/j.tust.2019.103264 ↗
18. Huang, M., Huang, M., and Yang, Z. (2023). Large-Scale Model Test on Water Pressure Resistance of Lining Structure of Water-Rich Tunnel. Materials, 16.10.3390/ma16010440 ↗
19. External hydraulic pressure and invert uplift study in a non-circular shallow tunnel10.1016/j.tust.2021.104345 ↗
20. Investigating the influence of water on swelling deformation and mechanical behavior of mudstone considering water softening effect10.1016/j.enggeo.2023.107102 ↗
21. Numerical analysis of DRC segment under inner water pressure based on full-scale test verification for shield tunnel10.1016/j.tust.2016.03.010 ↗
22. Numerical simulation of the fluid-solid coupling mechanism of water and mud inrush in a water-rich fault tunnel10.1016/j.tust.2022.104796 ↗
23. Analytical solution of external water pressure on deep tunnel lining in horizontally layered hydrogeological structures10.1007/s10064-022-02741-9 ↗
24. Analytical Solution of Seepage Field in Karst Tunnel
25. Numerical Simulation on the Seepage Properties of Soil-Rock Mixture10.1155/2018/1859319 ↗
26. Large scale three-dimensional seepage analysis model test and numerical simulation research on undersea tunnel10.1016/j.apor.2016.07.013 ↗
27. (2011). Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Code for Design of Concrete Structures (Standard No. GB 50010-2010).