摘要
依托自行研发的含瓦斯煤热–流–固–力耦合吸附/解吸实验系统,测定了不同围压和孔隙压力组合条件下,煤样加载破坏过程中不同加载阶段的瓦斯解吸量,并对实验数据进行了拟合,分析了轴压、围压和孔隙压力对含瓦斯原煤解吸规律的影响。结果表明:在煤样整个加载破坏过程中,受载原煤瓦斯解吸量呈现先减小后增加的"V"型变化趋势,且最小出现在屈服强度阶段,最大出现在脆性破坏阶段;受载原煤瓦斯解吸量随围压的增大而减小,随吸附平衡压力的增大而增大。
In order to study the desorption law of loaded gas-filled raw coal, relying on own developed gasfilled coal heat-flow-solid-mechanical coupled adsorption-desorption experiment system, experiment determined the gas desorption quantity of different loading stage under different confining pressure and pore pressure, the experimental data were fitted, the influence of axial compression, confining pressure and pore pressure on gas desorption of raw coal was analyzed . The results showed that the gas desorption quantity decreases and then increases with the increase of axial compression, showing a “V” shaped variation, the minimum appeared in the stage of yield strength, maximum in brittle failure stage; the gas desorption decreases with the increase of confining pressure, with the increase of adsorption equilibrium pressure, gas desorption quantity increase as a quadratic function.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2014年第4期21-24,30,共5页
Coal Geology & Exploration
基金
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)
关键词
受载
含瓦斯原煤
瓦斯解吸规律
loaded
gas filled raw coal
gas desorption law
作者简介
贾彦楠（1987－），男，河北承德人，硕士，助理工程师，从事矿井通风、瓦斯治理和矿井设计工作．
