Coal and gas outburst is a potentially fatal risk during the mining of gassy coal seams, which seriously threatens the safe mining of collieries. To understand the outburst mechanism and evolution rules, a new apparatus (LSTT) was developed to conduct simulated experiment. In the context of an outburst accident in Dingji coal mine, the authors launched an authentic outburst experiment to replay the outburst accident. Experimental apparatus, similar criterion, coal‐like materials and gas sources, and experimental design were discussed systematically in this paper. Experimentally, the study analyzed the geo‐stress has significant influence on the outburst evolution. At the driving face, the stress concentration possibly caused gas outburst, under the influence of mining‐induced stress. After the outburst occurred, the stress balance of the coal changed, resulting in the instability of the coal. Furthermore, the elastic energy, gas enthalpy, and gravitational potential energy were released rapidly. The experimental result stated that outburst coal has the sorting characteristics, in line with the field outburst law. The intensity prediction model has been built based on the energy model. Moreover, the factors that impact outburst intensity were analyzed. In the process of coal and gas outburst, the gas enthalpy of gas and the elastic potential of coal are the main energy sources. This study provides guidance for the development of the outburst mechanism and outburst mine management.

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煤与瓦斯突出应力-压力演化规律的实验研究-以定籍煤矿为例

瓦斯突出的煤层开采期间，煤与瓦斯突出是潜在的致命危险，严重威胁煤矿的安全开采。为了了解爆发的机理和演变规律，研制了一种新的仪器（LSTT）进行模拟实验。在定籍煤矿发生一次突发事故的背景下，作者发起了一次真实的突发实验，以重播该突发事故。本文系统地讨论了实验设备，类似标准，类煤材料和气源以及实验设计。通过实验，该研究分析了地应力对爆发演化的影响。在掘进工作面的应力作用下，应力集中可能引起瓦斯突出。爆发后，煤的应力平衡发生变化，导致煤的不稳定性。此外，弹性能，气体焓和重力势能被迅速释放。实验结果表明，突出煤具有分选特征，符合野外突出规律。基于能量模型建立了强度预测模型。此外，分析了影响爆发强度的因素。在煤与瓦斯突出过程中，瓦斯的气体焓和煤的弹性势是主要的能源。这项研究为发展突出机制和突出矿山管理提供了指导。实验结果表明，突出煤具有分选特征，符合野外突出规律。基于能量模型建立了强度预测模型。此外，分析了影响爆发强度的因素。在煤与瓦斯突出过程中，瓦斯的气体焓和煤的弹性势是主要的能源。这项研究为发展突出机制和突出矿山管理提供了指导。实验结果表明，突出煤具有分选特征，符合野外突出规律。基于能量模型建立了强度预测模型。此外，分析了影响爆发强度的因素。在煤与瓦斯突出过程中，瓦斯的气体焓和煤的弹性势是主要的能源。这项研究为发展突出机制和突出矿山管理提供了指导。