This study investigates the coupled effect of the soil spatial variations and the disturbance of
ground surface on the existing tunnel using random finite difference method (RFDM). The …

The blow count (N) measured from the standard penetration test is widely used to predict the
shear wave velocity (V s) of soils. As the NV s relationships vary from one region to another …

Statistical analysis of 44 loess tunnel collapse accidents in the past 15 years as related to
causes and characteristics are discussed in this study. First, several statistical indicators …

With the frequent occurrence of heavy rainfall, the lining cracking, leakage, and buckling
collapse accidents of water-rich mountain tunnels are becoming increasingly prominent. A …

Most of urban ground collapses and tunnel failures are caused by joint leakage of shield
tunnel lining. This paper conducts a series of model tests and particle flow simulations …

The localised leakage in shield tunnels that mainly occurs at segment joints may induce
other defects, which threatens operational safety. To obtain a universal solution for the …

This paper analyzes the characteristics and mechanism of the collapse of a tunnel in
Wenzhou in fault fracture zone during rainfall based on the failure theory of surrounding …

Water-soil gushing has become the main risk affecting the safety of shield tunnels in water-
rich sandy layers. In this paper, a two-phase single-point material point method (MPM) is …

This paper presents a novel approach for simulating the localized leakage behavior of
segmentally lined tunnels based on a cohesive zone model. The proposed approach not …

The rapid urbanization process in China has led to an increase in underground construction
projects. Among these, shield tunnelling in urban areas can cause significant disturbances …