煤田地质与勘探2016，Vol.44Issue(3)：10-13,20,5.DOI:10.3969/j.issn.1001-1986.2016.03.002
受载原煤中瓦斯的扩散规律
Experimental investigation of gas desorption law of loaded raw coal
摘要
Abstract
To investigate the gas desorption law of loaded raw coal,raw coal samples were used as experimental subjects. The gas desorption experiments were carried out with raw coal samples under tri-axis loading conditions at a constant temperature 30℃. The gas desorption law of raw coal samples,which were tested during the process of loading-absorption-desorption-reloading until destruction was obtained by using the self-developed coupled thermo-hydro-mechanical system. The results showed that the desorption law of loaded coal can be described by the desorption mathematical model of particle coal. The desorption amount of loaded raw samples decreases with the axial-pressure under constant temperature and confining pressure. However,the gas desorption amount in-creases significantly when the axial-pressure is over the peak strength. The gas desorption and migration velocity shows linear decrease with the axial-pressure during the stage of compaction and linear elasticity,and exponential increase in the yield stage and peak stage. The results have some theoretical significance for gas drainage and the study of the mechanism of gas outburst.关键词
受载原煤/原煤煤样/解吸规律/破坏/轴压Key words
loaded coal/raw coal samples/destruction/law of desorption/axial pressure分类
天文与地球科学引用本文复制引用
王登科,王洪磊,姚邦华,温志辉,贾彦楠..受载原煤中瓦斯的扩散规律[J].煤田地质与勘探,2016,44(3):10-13,20,5.基金项目
国家自然科学基金项目(51304072)；河南省基础与前沿技术研究计划项目(132300413203)；河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放课题(WS2012B07)@@@@The National Natural Science Foundations of China (51304072)；Henan Province Basic and Frontier Technology Research Projects of China (132300413203)；the Open Project of State Key Laboratory Cultivation Base for Gas Geology and Gas control(WS2012B07) （51304072）
