Stability of 3D Tunnel Faces in Inclined Layered Soils Under Steady-State Unsaturated Seepage Based on Grey Relational Analysis
Source abstract
Abstract
This paper aims to estimate the stability of tunnel faces in inclined layered soils under steady unsaturated seepage conditions, comparing the degree of correlation between the stability of the tunnel face and the influence of three types of parameters: unsaturated soil parameters, spatial geometric parameters of soil stratification, and other relevant factors. The study leverages the suction head distribution in multi-layered unsaturated soils, deriving a new formula to compute the effects of steady-state seepage forces with matric suction distribution in inclined stratified soil layers. A three-dimensional discrete rotational failure mechanism model is employed to calculate the critical support force at the tunnel face. The corresponding parametric analysis involves unsaturated soil parameters, spatial geometric parameters, and the variations in these parameters across different soil layers. Based on this analysis, the varying degrees of correlation between tunnel stability and changes in spatial angle parameters considering soil stratification, and the variations in unsaturated parameters across different soil layers are thoroughly investigated. The proposed framework serves as a valuable tool for quantitatively assessing the effects of unsaturated seepage forces on the stability of tunnel faces situated within complex, inclined, layered soil formations.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Geotechnical Engineering and Analysis · Soil and Unsaturated Flow · Grouting, Rheology, and Soil Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering, Central South University, Changsha 410075, China
Department of Civil & Architecture Engineering, Changzhou Institute of Technology, Changzhou 213028, China
References (31)
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