Fracture evolution and fracture mechanism of tunnel surrounding rock: A case study based on laboratory tests and theoretical analysis-Reference-Cited by-同舟云学术

Fracture evolution and fracture mechanism of tunnel surrounding rock: A case study based on laboratory tests and theoretical analysis

Published:2023-04-20 Issue:7 Volume:46 Page:2617-2638
ISSN:8756-758X
Container-title:Fatigue & Fracture of Engineering Materials & Structures
language:en
Short-container-title:Fatigue Fract Eng Mat Struct

Author:

Xiao Weijing¹²^ORCID,Zhang Dongming²^ORCID,Li Shujian²³⁴,Lu Jun⁵⁶

Affiliation:

1. School of Civil Engineering and Architecture East China Jiaotong University Nanchang China

2. State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing China

3. Yunnan Phosphate Chemical Group Co.,Ltd. Kunming China

4. National Engineering and Technology Research Center for Development and Utilization of Phosphate Resources Kunming China

5. Institute of Deep Earth Sciences and Green Energy Shenzhen University Shenzhen China

6. Department of Civil and Mineral Engineering University of Toronto Toronto Ontario Canada

Abstract

AbstractTo explore the fracture characteristics and fracture mechanism of the surrounding rock of straight‐walled arched tunnels, this study first carried out biaxial compression tests on rock samples and analyzed the disaster evolution characteristics under loading. Then, a stress distribution function was established using a complex function, and the distribution characteristics of the surrounding rock stress field were determined. Finally, combining the stress field with results obtained by computational tomography and acoustic emission measurements, the dynamic evolution of the main fracture mechanism of the tunnel surrounding rock was comprehensively analyzed, and the fracture mechanism of the surrounding rock of the straight‐walled arched tunnel was elucidated. The research results strengthen the understanding of rock fracture evolution during tunnel construction and operation and provide a basis for tunnel construction and surrounding rock stability analysis.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1111/ffe.14021

Reference51 articles.

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