Mechanism investigation on coal and gas outburst: An overview
来源期刊：International Journal of Minerals Metallurgy and Materials2020年第7期
论文作者：Yan-kun Ma Bai-sheng Nie Xue-qiu He Xiang-chun Li Jun-qing Meng Da-zhao Song
文章页码：872 - 887
摘 要：Coal and gas outburst is a frequent dynamic disaster during underground coal mining activities. After about 150 years of exploration,the mechanisms of outbursts remain unclear to date. Studies on outburst mechanisms worldwide focused on the physicochemical and mechanical properties of outburst-prone coal, laboratory-scale outburst experiments and numerical modeling, mine-site investigations, and doctrines of outburst mechanisms. Outburst mechanisms are divided into two categories: single-factor and multi-factor mechanisms. The multi-factor mechanism is widely accepted, but all statistical phenomena during a single outburst cannot be explained using present knowledge. Additional topics about outburst mechanisms are proposed by summarizing the phenomena that need precise explanation. The most appealing research is the microscopic process of the interaction between coal and gas. Modern physical-chemical methods can help characterize the natural properties of outburst-prone coal. Outburst experiments can compensate for the deficiency of first-hand observation at the scene. Restoring the original outburst scene by constructing a geomechanical model or numerical model and reproducing the entire outburst process based on mining environment conditions, including stratigraphic distribution, gas occurrence, and geological structure, are important. Future studies can explore outburst mechanisms at the microscale.
Yan-kun Ma1，Bai-sheng Nie1,2,3，Xue-qiu He1,2,4，Xiang-chun Li1,2，Jun-qing Meng1,2，Da-zhao Song4
1. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing)2. Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology (Beijing)3. Xinjiang Institute of Engineering4. School of Civil and Resource Engineering, University of Science and Technology Beijing
摘 要：Coal and gas outburst is a frequent dynamic disaster during underground coal mining activities. After about 150 years of exploration,the mechanisms of outbursts remain unclear to date. Studies on outburst mechanisms worldwide focused on the physicochemical and mechanical properties of outburst-prone coal, laboratory-scale outburst experiments and numerical modeling, mine-site investigations, and doctrines of outburst mechanisms. Outburst mechanisms are divided into two categories: single-factor and multi-factor mechanisms. The multi-factor mechanism is widely accepted, but all statistical phenomena during a single outburst cannot be explained using present knowledge. Additional topics about outburst mechanisms are proposed by summarizing the phenomena that need precise explanation. The most appealing research is the microscopic process of the interaction between coal and gas. Modern physical-chemical methods can help characterize the natural properties of outburst-prone coal. Outburst experiments can compensate for the deficiency of first-hand observation at the scene. Restoring the original outburst scene by constructing a geomechanical model or numerical model and reproducing the entire outburst process based on mining environment conditions, including stratigraphic distribution, gas occurrence, and geological structure, are important. Future studies can explore outburst mechanisms at the microscale.
关键词：
