Article: Study on the law of disaster caused by multi-field coupling of coal and gas near fault tectonic zone Journal: International Journal of Oil, Gas and Coal Technology (IJOGCT) 2025 Vol.38 No.5 pp.1 - 23 Abstract: To explore the multi-field coupling disaster-causing laws near fault tectonic, the multi-physical field evolution characteristics of conventional coal seams and the fault-containing coal seams were compared and analysed, and the energy change laws during the mining process of fault-containing coal seams were investigated. The findings reveal that compared to conventional coal seams, stress concentration and gas accumulation inside fault-containing coal seams were more significant. Elastic energy and gas expansion energy dominate the evolution of the outburst process. Elastic strain can lead to an increase in gas expansion energy within the coal seam. The proportion of free gas expansion energy in the total energy is relatively small, and its contribution to gas outburst is also relatively small. The key to gas outburst lies in the instantaneous release of a large amount of adsorbed gas expansion energy. The research findings are important for understanding the multi-field coupling disaster mechanism near fault tectonic. [Received: January 4, 2025; Accepted: August 5, 2025] Inderscience Publishers - linking academia, business and industry through research

Title: Study on the law of disaster caused by multi-field coupling of coal and gas near fault tectonic zone

Authors: Chong Liu; Zhifan Lu; Zhiyu Dong; Kaiwen Ren; Jie Ma; Junfeng Wang

Addresses: College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Shanxi Xinyuan Coal Limited Liability Company, Jinzhong, 046000, China ' College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China ' College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China ' College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China ' College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China ' College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, China

Abstract: To explore the multi-field coupling disaster-causing laws near fault tectonic, the multi-physical field evolution characteristics of conventional coal seams and the fault-containing coal seams were compared and analysed, and the energy change laws during the mining process of fault-containing coal seams were investigated. The findings reveal that compared to conventional coal seams, stress concentration and gas accumulation inside fault-containing coal seams were more significant. Elastic energy and gas expansion energy dominate the evolution of the outburst process. Elastic strain can lead to an increase in gas expansion energy within the coal seam. The proportion of free gas expansion energy in the total energy is relatively small, and its contribution to gas outburst is also relatively small. The key to gas outburst lies in the instantaneous release of a large amount of adsorbed gas expansion energy. The research findings are important for understanding the multi-field coupling disaster mechanism near fault tectonic. [Received: January 4, 2025; Accepted: August 5, 2025]

Keywords: gas outburst; multi-field coupling; fault tectonics; permeability.

DOI: 10.1504/IJOGCT.2025.149502

International Journal of Oil, Gas and Coal Technology, 2025 Vol.38 No.5, pp.1 - 23

Received: 25 Dec 2024
Accepted: 05 Aug 2025
Published online: 04 Nov 2025 *

Title: Study on the law of disaster caused by multi-field coupling of coal and gas near fault tectonic zone

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