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Mechanism investigation on coal and gas outburst: An overview

International Journal of Minerals,Metallurgy and Materials 2020年第7期27卷 872-887页

作者： Yan-kun Ma Bai-sheng Nie Xue-qiu He Xiang-chun Li Jun-qing Meng Da-zhao Song State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology(Beijing)Beijing 100083China Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources China University of Mining and Technology(Beijing)Beijing 100083China Xinjiang Institute of Engineering Urumqi 830023China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 10083China

Coal and gas outburst is a frequent dynamic disaster during underground coal mining *** about 150 years of exploration,the mechanisms of outbursts remain unclear to *** 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 are divided into two categories:single-factor and multi-factor *** multi-factor mechanism is widely accepted,but all statistical phenomena during a single outburst cannot be explained using present *** topics about outburst mechanisms are proposed by summarizing the phenomena that need precise *** most appealing research is the microscopic process of the interaction between coal and *** physical-chemical methods can help characterize the natural properties of outburst-prone *** experiments can compensate for the deficiency of first-hand observation at the *** 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 *** studies can explore outburst mechanisms at the microscale.

关键词： coal and gas outburst outburst mechanism outburst model outburst simulation microscopic pore structure

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