含瓦斯煤岩流变特性研究  

Research on rheology characteristics of coal or rock containing gas

作　　者：何学秋[1] 薛二龙[1] 聂百胜[1] 李钢[1] 

机构地区：[1]中国矿业大学资源与安全工程学院,北京100083

出　　处：《辽宁工程技术大学学报（自然科学版）》2007年第2期201-203,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金重点项目(50134040);国家自然科学基金项目(50204010;50404015);国家自然科学基金仪器专项(50427401);国家十五攻关资助项目(2001BA803B0408);国家重点基础研究发展计划973计划(2005cb221502)

摘　　要：在打通煤样流变实验基础上,研究了含瓦斯煤岩在不同的孔隙压力下不同应力级别的变形与时间关系,提出的广义西原模型能考虑到煤岩体蠕变加速阶段的非等加速特性,真实描述煤岩体蠕变的全过程曲线,最后利用非线性回归方法-最小二乘法中的Marquardt法对实验结果进行了拟合,获取了煤岩的流变参数。理论分析结果和实验结果对比,两者之间有较好的吻合性。广义西原模型为使用电磁辐射法预测煤与瓦斯延迟突出提供了理论基础。Based on the datong sample rhelogy experimentation, the paper studies strain-time path of the coal or rock containing gas in different pore stress and loading stress. It is showed that the generalized K-B model rhelogy can think about non equal accelerating creeping in accelerated creeping phase and describe the whole creeping process curve , The creeping parameters of the model in the creeping equations have been obtained by the non-line probability analysis with the result of laboratory creeping test. Finally, the comparison between the theory analysis and the experiment is good. The study offers a theory basis for the delay of gas outburst and for the forecasting of coal with EME method.

关 键 词：煤岩 蠕变 Marquardt 

分 类 号：O37[理学—流体力学] TU452[理学—力学]