Analytical Solutions of Steady a Seepage Field for Deep-Buried Tunnel with Grouting Ring Considering Anisotropic Flow

Abstract

Difficulties related to seepage are frequently encountered in tunnel design and construction, especially in deep-buried tunnels. Nowadays, analytical solutions of steady seepage fields for deep-buried tunnel usually assume that the surrounding rock mass is homogeneous. In this study, analytical solutions of a steady seepage field for a deep-buried tunnel with grouting ring considering anisotropic flow are proposed. The proposed analytical solutions are verified by numerical simulations and parameter analysis are carried out. Results show that the seepage field of surrounding rocks around the deep buried circular tunnel is no longer uniformly distributed and presents elliptical distribution. The change of permeability coefficient of the lining structure has a great influence on the hydraulic head when the difference between permeability coefficient of lining structure and surrounding rock is not very large. The results show that the size of the grouting ring has more significant influence on the grouting effect.

Advances in Marine Engineering: Geological Environment and Hazards

“…Chen et al [6] derived the analytical solutions of a steady seepage field for a deepburied tunnel with grouting ring considering anisotropic flow, and the analytical solutions are validated by numerical simulations. Subsequently, they carried out parameter analysis and the results show that (1) the seepage field of surrounding rocks around the deeply buried circular tunnel is no longer uniformly distributed and presented an elliptical distribution, (2) the difference between the permeability coefficient of the lining structure and the surrounding rock is small, (3) the change in the permeability coefficient of the lining structure has a significant influence on the hydraulic head, and (4) the size of the grouting ring has a more significant influence on the grouting effect.…”

“…The SI includes 1 review paper [1] and 13 research papers [2][3][4][5][6][7][8][9][10][11][12][13][14] that cover different aspects related to the subject. A total of 95 scholars from universities, research institutions, and industries have contributed to this SI.…”

“…The high-quality papers collected in this SI involve many classic and innovative methodologies in this research field, including, but not limited to, analytical and statistical analyses, numerical simulations, laboratory testing, and marine surveys. Specifically, some researchers carried out in situ marine surveys and monitoring [2,3], some implemented discrete element and finite element numerical simulations [4][5][6], some conducted indoor unit tests [7][8][9][10][11][12], some developed laboratory model tests [13,14], and others applied analytical and statistical methods [1,[6][7][8]. These papers represent the state-of-the-art in the latest research concepts, advanced methods, and data that will contribute greatly to the development of the field of marine geological environments and hazards.…”

Seepage Actions and Their Consequences on the Support Scheme of Deep-Buried Tunnels Constructed in Soft Rock Strata

“…Their results mainly showed that the evolution of the rock permeability coefficient governs the peak permissible drainage flow along the tunnel environments. Using conformal mapping techniques, Chen et al [12] proposed workable analytical solutions for anisotropic and steady seepage fields for deep grouted and lined tunnels. Nevertheless, since the exact rock types hosting such tunnels are not clearly provided, it is difficult to accurately employ such solutions in a given study case.…”

Prediction of water inflow and analysis of surrounding rock stability in unfavorable geological mountain tunnel

“…When confronted with substantial amounts of tunnel water inflows during construction processes grouting is often utilized for waterproofing treatment thus making determination of grouting parameters crucially important. Chen et al (2023) proposed an analytical solution for the stable seepage field of deepburied grouting tunnels, considering anisotropic infiltration. Ye (2023) predicted the maximum inflow during tunnel construction using empirical formulas and numerical simulations, proposing a construction scheme to control inflow through radial grouting.…”