Study on the Distribution Trend of Rockburst and Ground Stress in the Hegang Mining Area

Jiewen Pang, Jianlin Xie (), Yongliang He, Qiaoyun Han and Yongjiang Hao
Additional contact information
Jiewen Pang: School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China
Jianlin Xie: School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China
Yongliang He: School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China
Qiaoyun Han: School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Yongjiang Hao: School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China

Sustainability, 2023, vol. 15, issue 12, 1-20

Abstract: As the depth of coal mining increases, rockbursts become more severe, and multiple rockburst accidents have previously occurred, seriously affecting coal mine production safety. With the Hegang mining area as the research object and using field measurement and numerical simulation as the research methods, the geological and tectonic characteristics of each impact mine in the Hegang mining area are analyzed to obtain the tectonic stress field distribution characteristics of each mine and the tectonic stress field distribution trend in the Hegang mining area. The maximum horizontal principal stress and the minimum horizontal principal stress on the energy field in the overrun area of the retrieval working face is analyzed via numerical simulation, and the influence trend of the ground stress on the impact ground pressure is finally obtained. Results show that using the typical working face where rockburst occurs as the geological proto-type, the influence of the direction of the ground stress field, the maximum horizontal principal stress and the minimum horizontal principal stress on the energy field in the overrun area of the retrieval working face is analyzed via numerical simulation, and the influence trend of the ground stress on the impact ground pressure is finally obtained. When the angle is 70°~90°, an energy peak in the overrun area of the working face reaches its maximum. The ratio of the minimum horizontal stress to the vertical stress is positively correlated with the energy concentration in the overrun area of the working face, but its change has a minimal effect on the energy distribution in the overrun area of the working face. When this ratio is increased from 0.6 to 1.4, the peak energy of the simulated working face only increases by 8.22%, and the energy concentration area remains basically unchanged.

Keywords: ground stress; rockburst; energy accumulation; peak energy; hazard assessment (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/12/9445/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/12/9445/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:12:p:9445-:d:1169305

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().