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Failure mechanism of coal and gas outburst initiation

机译：煤气突出发起的失效机制

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Based on the concept that the initiation of coal and gas outburst is the failure of coal and rock mass, the relevant stability theory is applied to build a nonlinear dynamics model of outburst initiation, and the failure mechanism of outburst initiation is systematically analyzed. The result show that the outburst initiation model can be described by a nonlinear partial differential equation set, and the outburst initiation failure depends on the solution stability of this equation set, this question can be strictly defined and determined by Liapunov's stability theory. The influencing factors of outburst initiation mainly include the structure forms, material properties and load patterns of the coal-rock mass system. The occurrence of abutment pressure and limit equilibrium zone in front of working face exacerbates the potential of outburst. There are 4 canonical forms of coal wall failure: extrusion, spallation, collapse and breakage. Outburst initiation is an integration of material failure and structure flexion, they abide by specific energy condition accordingly, but outburst initiation condition can't be described by a simple energy equation.
机译：基于煤炭和天然气突出的启动的概念是煤炭和岩石质量的故障，应用相关的稳定性理论来构建突出发起的非线性动力学模型，系统地分析了突出发起的失败机制。结果表明，突出发起模型可以由非线性偏微分方程组描述，并且突出发起失败取决于该等式集的解决方案稳定性，可以通过Liapunov的稳定性理论严格定义和确定该问题。爆发发起的影响因素主要包括煤岩大众系统的结构形式，材料特性和负载图案。工作面前面的邻接压力和极限平衡区的发生加剧了爆发的潜力。有4种规范形式的煤墙体故障：挤出，脱矿，塌陷和破损。爆发发起是材料失效和结构屈曲的一体化，它们相应地遵守特定能量状况，但是简单的能量方程不能描述突出发起条件。

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