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为了解炮掘引起的煤体破坏效应，用破裂间断波模型讨论含瓦斯煤在突然卸压条件下的开裂破坏，考虑了煤样的抗拉强度和瓦斯初始压力的影响，计算了破裂波的传播和破裂段的长度，破裂段的计算长度与实验值符合较好．用破裂波模型能说明较弱的一类煤和瓦斯突出，即开裂破坏的主要特征．
In order to understand the destructive effect of coal mass caused by blasting, the rupture wave model was used to discuss the cracking and failure of gas containing coal under the condition of sudden pressure relief. The influence of the tensile strength of coal sample and the initial pressure of gas was considered. The length of propagating and rupture section and the calculated length of rupture section are in good agreement with the experimental data. Using the rupture wave model, one of the weaker types of coal and gas outburst can be described, namely the main features of cracking.