Protection Technique of Support System for Dynamic Disaster in Deep Underground Engineering: A Case Study-Reference-Cited by-同舟云学术

Protection Technique of Support System for Dynamic Disaster in Deep Underground Engineering: A Case Study

Published:2023-04-25 Issue:9 Volume:15 Page:7165
ISSN:2071-1050
Container-title:Sustainability
language:en
Short-container-title:Sustainability

Author:

Liu Yunqiu¹²^ORCID,Zhao Yuemao³,Wang Kun³^ORCID,Li Gongcheng⁴,Ge Zhengchen³^ORCID

Affiliation:

1. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China

2. Sionsteel Maanshan General Institute of Mining Research Co., Ltd., Maanshan 243000, China

3. College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China

4. School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China

Abstract

During excavation in a deep tunnel, dynamic disaster is an extremely severe impact failure. The necessity of an energy-absorbing support system is analyzed for different characteristics of dynamic disaster (rockburst) failure. The energy-absorbing support system design includes a combination of early-warning, energy-absorbing bolts, and other components. This support system is designed to meet the energy requirement of a rockburst disaster based on an early warning. The energy-absorbing rockbolt uses the stepwise decoupling technique to realize the brittle-ductile transition of the structure, which is referred to as a stepwise decoupling rockbolt (SD-bolt). The ultimate force, ultimate deformation, and energy were calculated as 241 kN, 442.3 mm, and 95.89 kJ under static pull-out load. Monitored by a microseismic system, the support system was tested by moderate rockburst disaster impact on site. Considering similar rockburst disaster failure cases, this energy-absorbing support system can reduce rockburst disaster damage to a certain extent and improve overall safety during deep engineering construction.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction

Link

https://www.mdpi.com/2071-1050/15/9/7165/pdf

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