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Mechanism investigation on coal and gas outburst: An overview
International Journal of Minerals, Metallurgy and Materials ( IF 4.8 ) Pub Date : 2020-07-13 , DOI: 10.1007/s12613-019-1956-9
Yan-kun Ma , Bai-sheng Nie , Xue-qiu He , Xiang-chun Li , Jun-qing Meng , Da-zhao Song

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.



中文翻译:

煤与瓦斯突出机理研究综述

煤炭和瓦斯突出是地下煤矿开采活动中经常发生的动态灾害。经过约150年的探索,迄今为止,爆发的机制仍不清楚。全球范围内的突出机理研究主要集中在易突出煤的物理化学和力学特性,实验室规模的突出实验和数值模拟,矿场调查以及突出机理方面。爆发机制分为两类:单因素和多因素机制。多因素机制已被广泛接受,但单个爆发期间的所有统计现象都无法使用现有知识进行解释。通过总结需要精确解释的现象,提出了有关爆发机制的其他主题。最吸引人的研究是煤与天然气之间相互作用的微观过程。现代的物理化学方法可以帮助表征易爆煤的自然特性。爆发实验可以弥补现场第一手观察的不足。重要的是,通过构造地质力学模型或数值模型来恢复原始突出现场,并根据采矿环境条件(包括地层分布,瓦斯发生和地质结构)再现整个突出过程,这一点很重要。未来的研究可以从微观角度探讨爆发机制。重要的是,通过构造地质力学模型或数值模型来恢复原始突出现场,并根据采矿环境条件(包括地层分布,瓦斯发生和地质结构)再现整个突出过程,这一点很重要。未来的研究可以从微观角度探讨爆发机制。重要的是,通过构造地质力学模型或数值模型来恢复原始突出现场,并根据采矿环境条件(包括地层分布,瓦斯发生和地质结构)再现整个突出过程,这一点很重要。未来的研究可以从微观角度探讨爆发机制。

更新日期:2020-07-13
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