Mechanism analysis of tunnel collapse in a soft-hard interbedded surrounding rock mass: A case study of the Yangshan Tunnel in China

Liu, Xingzong; Liu, Fei; Song, Kezhi

doi:10.1016/j.engfailanal.2022.106304

Cited by 38 publications

(4 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are currently two core research directions for rockfall monitoring in underground engineering. One is the real-time monitoring technology for dangerous rocks based on displacement and stress monitoring [22][23][24]. Traditional monitoring methods have a long history of development and have a good feedback effect on the deformation and stress of surrounding rock.…”

Section: Discussionmentioning

confidence: 99%

A Large-Scale Three-Dimensional Apparatus to Study Failure Mechanisms of Rockfalls in Underground Engineering Contexts

Xin,

Yang,

et al. 2024

Sensors

View full text Add to dashboard Cite

Rockfalls are an important factor affecting underground engineering safety. However, there has been limited progress in understanding and predicting these disasters in the past few years. Therefore, a large-scale three-dimensional experimental simulation apparatus to study failure mechanisms of rockfalls occurring during underground engineering was developed. This apparatus, measuring 4 m × 4 m × 3.3 m in size, can achieve vertical and horizontal symmetric loading. It not only simulates the structure and stress environment of a rock mass but also simulates the stepwise excavation processes involved in underground engineering. A complete simulation experiment of rockfalls in an underground engineering context was performed using this apparatus. Dynamic evolution characteristics of block displacement, temperature, natural vibration frequency, and acoustic emissions occurring during rockfalls were studied during the simulation. These data indicate there are several indicators that could be used to predict rockfalls in underground engineering contexts, leading to better prevention and control.

show abstract

Section: Discussionmentioning

confidence: 99%

A Large-Scale Three-Dimensional Apparatus to Study Failure Mechanisms of Rockfalls in Underground Engineering Contexts

Xin,

Yang,

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

“…Meng et al [9] used D-InSAR monitoring to analyze the causes of large deformations in tunnels. The collapse mechanism of tunnels in soft-hard interlayered rock was investigated by Liu et al [10]. Chen et al [11] analyzed the squeezing deformation in high geostress stratified soft OPEN ACCESS EDITED BY Yilin Qu, Northwestern Polytechnical University, China REVIEWED BY rock tunnels.…”

Section: Introductionmentioning

confidence: 99%

Research on intrusion and large arch bulge in lining structure for highway’s mudstone tunnel

Li,

Fu,

Liu

et al. 2024

Front. Phys.

View full text Add to dashboard Cite

During the construction of a highway in northwest China, large deformation of mudstone caused severe deformation of and damage to side walls, initial support, and secondary lining to various extents. To reveal the causes of mudstone’s large deformation in the tunnels of this highway, a comprehensive study was conducted by using engineering geological survey, on-site monitoring and measurement, indoor rock mechanics test, numerical simulation, and macroscopic analysis. For the problem of large deformation of this highway’s tunnel section from YK209 + 500 m to YK210 + 030 m, the 3D finite difference method FLAC3D was used to simulate the large deformation of the wall rock and compare the deformation of the tunnel and the mechanical characteristics of the lining structure under different conditions by means of inverse analysis of the rheological characteristics of the mudstone and simulation of the softening of the mudstone in water. The research results provide a reference and basis for the construction design of similar mudstone tunnel projects. For the management of tunnel deformation, it is recommended to enhance the tunnel’s drainage measures, thereby mitigating the intensification of mudstone softening when exposed to water.

show abstract

“…In addition, the layered surrounding rocks are characterized by laminations and deformation anisotropy, which render the tunnels traversing this stratigraphic environment highly susceptible to large deformation hazards. The main disasters include primary support cracking [4,5], arch distortion [6,7], and collapse [8,9], all of which significantly threaten the safety of construction personnel and mechanical equipment. Therefore, it is necessary to better understand the stress characteristics of tunnel support in areas comprising layered surrounding rock with high ground stress.…”

Section: Introductionmentioning

confidence: 99%

A Field Study to Measure the Surrounding Stress of Rock and Supporting Structure of a Steep Tunnel with a Combination of Hard and Soft Rock Layers under Plate Compression

Zhang,

Hu,

et al. 2024

Buildings

View full text Add to dashboard Cite

Tunnels excavated in a combination of hard and soft rock strata with high ground stress are prone to large deformations, collapse, and other disasters. The Yongfeng Tunnel, a reconstruction and expansion of the G544 line, suffered severe high ground stress from plate compression. This paper studied the surrounding rock pressure and supporting structure stress characteristics of tunnels with a combination of hard and soft rock strata with high ground stress by using earth pressure cells, surface strain gauges, and embedded strain gauges to test all stress related to the surrounding rock, primary support, and secondary lining. It was found that the contact pressure (P1) between the initial support and the surrounding rock and the contact pressure (P2) between the initial support of the leading tunnel were distributed in the direction of vertical stratification, while the contact pressures (P1 and P2) of the lagging tunnel were different due to the excavation unloading of the leading tunnel. The maximum stress positions of the initial support of the leading tunnel and the lagging tunnel were located in the left arch waist and the vault, respectively. However, the maximum stress position of the secondary lining was generally located on the side wall. The research results presented herein can guide future tunnel construction projects.

show abstract

Mechanism analysis of tunnel collapse in a soft-hard interbedded surrounding rock mass: A case study of the Yangshan Tunnel in China

Cited by 38 publications

References 50 publications

A Large-Scale Three-Dimensional Apparatus to Study Failure Mechanisms of Rockfalls in Underground Engineering Contexts

A Large-Scale Three-Dimensional Apparatus to Study Failure Mechanisms of Rockfalls in Underground Engineering Contexts

Research on intrusion and large arch bulge in lining structure for highway’s mudstone tunnel

A Field Study to Measure the Surrounding Stress of Rock and Supporting Structure of a Steep Tunnel with a Combination of Hard and Soft Rock Layers under Plate Compression

Contact Info

Product

Resources

About