Research on coal fragmentation can play an important role in understanding coal and gas outbursts. The study discussed in this paper explored the fragmentation of gas-containing coal particles using the drop-weight impact method. The effects of equilibrium gas pressures and type of adsorbate gas on particle size distributions and fragmentation energy were investigated in detail. We found that the Fractal particle size distribution model can most effectively describe the crushed coal particle sizes. The equilibrium pressure and type of gas can influence the Fractal distribution parameter. The crushing energy is composed of energy to create new surfaces and other forms of energy that are dissipated but the equilibrium gas pressure and type of adsorption gas can affect energy consumption and crushing efficiency. This research will be of guiding significance to the intensity evaluation and mechanism understanding of coal and gas outbursts.

煤碎裂研究在理解煤与瓦斯突出方面可以发挥重要作用。本文讨论的研究使用滴重冲击法探讨了含气煤颗粒的破碎。详细研究了平衡气体压力和吸附物气体类型对粒度分布和破碎能的影响。我们发现分形粒度分布模型可以最有效地描述碎煤的粒度。平衡压力和气体类型会影响分形分布参数。破碎能量由产生新表面的能量和其他形式的能量消散组成，但是平衡气体压力和吸附气体的类型会影响能量消耗和破碎效率。