An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading

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成果类型：

期刊论文

作者：

Wenchen Fan*;Guodong Tang;Dongya Han;Hui Yang

通讯作者：

Wenchen Fan

作者机构：

[Wenchen Fan; Hui Yang] School of Civil Engineering, Central South University of Forestry and Technology, Changsha, China

[Guodong Tang] China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan, China

[Dongya Han] School of Resources and Safety Engineering, Central South University, Changsha, China

通讯机构：

[Wenchen Fan] S

School of Civil Engineering, Central South University of Forestry and Technology, Changsha, China

语种：

英文

关键词：

Stepped excavation unloading;Polylactic;Crack propagation;Rock-like material;Inhomogeneous deformation

期刊：

Bulletin of Engineering Geology and the Environment

ISSN：

1435-9529

年：

2023

卷：

期：

页码：

1-16

DOI：

10.1007/s10064-023-03491-y

基金类别：

This research is financially supported by Natural Science Foundation of Hunan Province (No. 2021JJ41077), Scientific Research Project of Hunan Provincial Department of Education (No. 21B0227), and Special Fund Project of Safety Production Prevention and Emergency in Hunan Province 2021.

机构署名：

本校为第一且通讯机构

院系归属：

土木工程学院

摘要：

Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (P...

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An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading

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