Rockburst Mechanism and Its Prevention and Control in Underground Mines, Volume II

Topic Information

Dear Colleagues,

Rockbursts are amongst the most formidable mining hazards found in underground mines, posing significant threats to personnel, equipment, and infrastructure. A rockburst describes the dynamic failure of rock mass, involving a sudden release of strain energy which causes violent material ejections to the mine opening. Due to the greater mining depths reached in recent decades, underground mines have encountered high in situ stress and challenging environments in the deep rock mass, resulting in frequent rockbursts in most mining countries. To address this challenge, intensive analytical analyses and laboratory tests have been conducted to investigate the occurrence mechanism of rockbursts. Further, to achieve effective burst hazard control and prevention, several techniques such as microseismic, stress, and AE (acoustic emission) monitoring have been applied to burst-prone mines. Many methods have been developed, whether for assessing rock stability around excavations or identifying precursors before burst damage.

Therefore, to gain a deeper understanding of the latest research progress of rockbursts in underground mines, this Topic invites original papers on the rockburst mechanism, as well as its prevention and control. The scope of the research topics includes but is not limited to (1) rockburst mechanism studies using laboratory tests, analytical analysis, and numerical modeling, (2) seismic methods for burst risk assessment and hazard forecast, and (3) innovative hazard prevention and control techniques in field applications.

Prof. Dr. Anye Cao
Dr. Changbin Wang
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Minerals minerals	2.5	3.9	2011	18.7 Days	CHF 2400	Submit
Applied Sciences applsci	2.7	4.5	2011	16.9 Days	CHF 2400	Submit

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12 pages, 10223 KiB  

Open AccessArticle

Stress–Structural Failure of a 610 m Crushing Station Left-Side Tunnel Section in Jinchuan II Mine: A Numerical Simulation Study

by Yongyuan Kou, Shenghua Yin, Shili Qiu and Jie Xin

Appl. Sci. 2024, 14(1), 59; https://doi.org/10.3390/app14010059 - 20 Dec 2023

Viewed by 588

Abstract

To address the stress–structural failure phenomenon that can be induced by the excavation of a left-side tunnel section of a 610 m crushing station, an unmanned aerial vehicle was used in this study to collect the geological conditions and rock mass information of [...] Read more.

To address the stress–structural failure phenomenon that can be induced by the excavation of a left-side tunnel section of a 610 m crushing station, an unmanned aerial vehicle was used in this study to collect the geological conditions and rock mass information of the working face, and important geometric information such as the attitude and spacing of rock mass were extracted. Based on the identified attitude and spacing information, a three-dimensional rock mass structure and numerical simulation model of the 610 m crushing station left-side tunnel section were constructed using discrete element numerical simulation software (3DEC) (version 5.0). The results show that the surrounding rock instability of the left-side tunnel section of the 610 m crushing station is controlled by both the stress field in the contact zone between reddish-brown granite stratum and the gray-black-gray gneiss stratum. The cause of stress–structural failure is that the joint sets (JSet #2 and JSet #3) are most likely to form unfavorable blocks with the excavation surface due to unloading triggered by the excavation. Therefore, stress–structural failure disasters in jointed strata sections are one of the key issues for surrounding rock stability during crushing station excavation. It is suggested to adopt ‘optimized excavation parameters + combined support forms’ to systematically control stress–structural failure after unloading due to the excavation from three levels: surface, shallow, and deep. The stress–structural failure mechanism of deep rock mass is generally applicable to a large extent, so the results of this research have reference value for engineering projects facing similar problems around the world. Full article

(This article belongs to the Topic Rockburst Mechanism and Its Prevention and Control in Underground Mines, Volume II)

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