基于瓦斯涌出条件下采动煤体蠕变理论研究  

Study of Mining Coal Creep Theory under Gas Emission Condition

作　　者：郭军杰 邹友平[3,4] 张瑞林[1] 

机构地区：[1]河南工程学院安全工程学院,河南郑州451191 [2]深井瓦斯抽采与围岩控制技术国家地方联合工程实验室河南理工大学,河南焦作454003 [3]天地科技股份有限公司开采设计事业部,北京100013 [4]煤炭科学研究总院开采研究分院,北京100013

出　　处：《煤矿开采》2018年第1期69-72,共4页Coal Mining Technology

基　　金：国家自然科学基金项目(51174082);河南理工大学深井瓦斯抽采与围岩控制技术国家地方联合工程实验室开放基金项目(G201615);2018年度河南省高等学校重点科研项目(18A440009)

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 andlinear 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 bynew creep formula better, when stress approximated to yield stress, coal body would be failure in short time under a small dynamicloading. It references for coal and gas outburst prevention and cure of coal mine.

关 键 词：含瓦斯煤体 非线性本构模型 蠕变特性 线性叠加原理 

分 类 号：TD325[矿业工程—矿井建设]