基于瓦斯涌出条件下采动煤体蠕变理论研究

摘要

为了研究瓦斯涌出导致采动煤体蠕变失稳的问题,应用非线性模型理论和线性叠加原理,建立了动载荷条件下的非线性蠕变方程来模拟含瓦斯煤体失稳过程.结果显示:新蠕变方程能够很好地描述瓦斯涌出过程中含瓦斯煤体蠕变失稳过程;当应力接近屈服应力时,仅需一个较小的动载荷就可以使煤体在较短时间内失稳.这对煤矿煤与瓦斯突出防治具有一定的参考意义.%In order to study the problem that mining coal creeping failure that caused by gas emission, and nonlinear model theory and linear superposition principle were applied, and nonlinear creep formula was built under dynamic pressure, which was simulated fail-ure process of coal containing methane.The results showed that coal containing methane creep and failure process could be described by new creep formula better, when stress approximated to yield stress, coal body would be failure in short time under a small dynamic loading.It references for coal and gas outburst prevention and cure of coal mine.