摘要
为了研究体积应力和孔隙压力对型煤渗透率的影响,以六盘水矿区的型煤试件为研究对象,利用研制的三轴渗透仪,进行恒定温度和平均有效应力,变体积应力及孔隙压力的三轴渗流实验。实验结果表明:煤的渗透率随试件所受的体积应力的增加呈非线性递减关系,符合指数分布规律;渗透率随孔隙压力增加而呈指数规律变小的规律,最终趋近于一个恒定值附近。
To study the influence of volume stresses and pores pressures on coal samples＇ permeability,coal samples which were taken from LiuPanshui mines in GuiZhou province are taken as study objects,and use triaxial permeability instrument to do permeability experiments in the conditions that constant temperature,average effective stresses,variable volume stresses and variable pore pressures.As experiments＇ results show：The coal＇s permeability will decrease as non-linear relationship with volume stresses increasing,and the relationship between coal＇s permeability and volume stresses conforms to exponent＇s law.The permeability will decrease as exponent＇s law with the increasing of pore pressures,and at last,the value will approach to a constant value.
出处
《煤矿安全》
CAS
北大核心
2011年第5期5-8,共4页
Safety in Coal Mines
基金
贵州省科技厅社会发展攻关项目(黔科合SZ字〔2009〕3032)
贵州省国际科技合作计划资助项目(黔科合外G字〔2010〕7008号)
重庆大学西南资源开发及环境灾害控制工程教育部重点实验室访问学者基金资助项目
贵州大学研究生创新基金资助项目(校研理工2010038)
关键词
体积应力
孔隙压力
渗透率
volume stresses
pore pressures
permeability
