In the last few decades, in both mining and civil engineering projects, deeper excavations
have been carried out than in the past. With this increase in depth, rocks may overstress and …

Foamed concrete possesses characteristics such as high deformability and low density.
Using foamed concrete in tunnel support is able to absorb a certain amount of rock creep …

The squeezing behavior of surrounding rock can be described as the time-dependent large
deformation during tunnel excavation, which appears in special geological conditions, such …

Abstract The Qingling–Bashan (QB) mountain region in southern Shaanxi mainly consists of
strongly compressive zones from east to west, with tight folds and compressive fractures …

Large squeezing deformation has always been a critical concern in the construction of deep-
buried tunnels in soft-weak rock masses. This paper describes a case study on the large …

Tunneling in fault zone presents considerable challenges to the engineer, including the
unexpected failure of supporting structures and the unpredictable geohazards. This paper …

Reasonable evaluation and prediction of squeezing condition to avoid large deformation
disaster in tunnels have been an important research issue. In order to accurately and rapidly …

One of the fundamental requirements in tunnel design is the prediction of failure
mechanisms. Besides, analyzing the ground hazards and their conditions is essential when …

Large deformations often occur during and after the construction of deep roadways,
particularly in fractured hard rock. With persistent deformation, there may be mechanistically …

Large squeezing deformation of layered soft rock tunnel under high geo-stress has a
significant time-dependent deformation behavior. In this paper, we studied the deformation …