采动煤体蠕变失稳研究  

Study on Creep Instability of Mining Coal

作　　者：郭军杰 张瑞林[1] GUO Junjie;ZHANG Ruilin(Safety Engineering Department, Henan University of Engineering, Zhengzhou 451191, China;State and Local Joint Engineering Laboratory for Gas Drainage ＆ Ground Control of Deep Mines, Henan Polytechnic University, Jiaozuo 454003, China)

机构地区：[1]河南工程学院安全工程学院,河南郑州451191 [2]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,河南焦作454003

出　　处：《煤矿安全》2018年第5期27-30,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51174082);2018年度河南省科技攻关资助项目(182102310738);2018年度河南省高等学校重点科研资助项目(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:蠕变方程能够很好的描述瓦斯涌出过程中含瓦斯煤体蠕变失稳过程;地应力是含瓦斯煤体失稳的第1因素,而瓦斯涌出将导致煤体失稳并加速失稳过程;屈服应力是预警煤与瓦斯突出关键参数。In order to study the problem of creep instability of mining coal due to the gas emission, a nonlinear creep equation was developed to simulate its creep instability process, which was derived by the nonlinear model theory and the linear superposition principle under the condition of dynamic load. The results showed that the creep equation can well describe the creep instability process of mining coal during the gas emission; the crustal stress is the first factor of mining coal, however, the gas emission will lead to its instability and accelerate the instability process; yield stress is the key reference point for early warning of coal and gas outburst.

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 煤与瓦斯突出 

分 类 号：TD712[矿业工程—矿井通风与安全]