摘要
在RMT-150B岩石力学伺服试验机的基础上,设计了一套测试煤样启动压力梯度和渗透率的实验装置,分别测试了煤样在不同含水饱和度状态下的启动压力梯度和渗透率。实验结果表明,随着含水饱和度的增大,渗透率逐渐降低,启动压力梯度逐步增大,渗透率越低的样品对含水饱和度越敏感,从理论上解释了煤层注水抑制瓦斯涌出的原因。
Based on RMT-150B rock mechanics servo testing machine,the experimental device for testing coal start-up pressure gradient and permeability was designed,and both the start-up pressure gradient and permeability of the coal samples at different water saturation state were tested.The experiment results show that the permeability decrease gradually,and start-up pressure gradient gradually increase with the increase of water saturation,and the lower permeability of samples is more sensitive to the water saturation,which is theoretical explanation that water-flooding coal seam inhibit gas emission.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2010年第6期928-931,共4页
Journal of China Coal Society
基金
长江学者和创新团队发展计划项目(IRT0618)
河南省重大公益性科研资助项目(081100910500)
河南省重点实验室项目(OT-MP0807,OTMP0901)
关键词
煤层注水
瓦斯涌出
启动压力梯度
渗透率
water-flooding coal seam
gas emission
start-up pressure gradient
permeability
