Coal and gas outburst dynamic system

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• 作者：Chaojun Fan^a ; Sheng Li^a ; ^b ; ^c ; ^{lisheng76@139.com} ; Mingkun Luo^a ; Wenzhang Du^a ; Zhenhua Yang^a
• 关键词：Coal and gas outburst ; Dynamic system ; Coal-gas medium ; Geology dynamic environment ; Mining disturbance ; Stress-seepage-damage coupling model
• 刊名：International Journal of Mining Science and Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：27
• 期：1
• 页码：49-55
• 全文大小：1332 K
• 卷排序：27

文摘

Coal and gas outburst is an extremely complex dynamic disaster in coal mine production process which will damage casualties and equipment facilities, and disorder the ventilation system by suddenly ejecting a great amount of coal and gas into roadway or working face. This paper analyzed the interaction among the three essential elements of coal and gas outburst dynamic system. A stress-seepage-damage coupling model was established which can be used to simulate the evolution of the dynamical system, and then the size scale of coal and gas outburst dynamical system was investigated. Results show that the dynamical system is consisted of three essential elements, coal-gas medium (material basis), geology dynamic environment (internal motivation) and mining disturbance (external motivation). On the case of C13 coal seam in Panyi Mine, the dynamical system exists in the range of 8–12 m in front of advancing face. The size scale will be larger where there are large geologic structures. This research plays an important guiding role for developing measures of coal and gas outburst prediction and prevention.