煤矿安全2017，Vol.48Issue(10)：1-4,4.DOI:10.13347/j.cnki.mkaq.2017.10.001
孔隙压力及温度对含瓦斯原煤渗透率影响的试验研究
Experimental Study on Effect of Pore Pressure and Temperature on Permeability of Raw Coal Containing Gas
摘要
Abstract
Based on raw coal specimens of No.9 seam of Linhua Coal Mine in Guizhou Mining Area as study objects,it carries out triaxial seepage tests under different pore pressure and temperature with independent triaxial seepage device that the outlet pressure could be adjustable.It shows that when the inlet gas pressure is constant and the pore pressure changes between 1.8 and 2.4 MPa,the permeability of raw coal containing gas changing with pore pressure is the exponential function relationship;when the pore pressure is constant,the permeability of raw coal containing gas decreases with the increase of temperature.But the degressive extent varies according to the increase of temperature.The two obey the power function distribution;if the pressure difference is constant,the permeability of raw coal containing gas decreases with the increase of temperature.When the temperature is constant,the permeability of raw coal containing gas decreases with the increase of pressure difference;by means of the above experimental results,the functional relation between the permeability of raw coal containing gas and the coupling effect of pore pressure and temperature is derived.关键词
孔隙压力/温度/含瓦斯原煤/渗透率/耦合作用Key words
pore pressure/temperature/raw coal containing gas/permeability/coupling effect分类
矿业与冶金引用本文复制引用
袁梅,杜育芹,许石青,李波波..孔隙压力及温度对含瓦斯原煤渗透率影响的试验研究[J].煤矿安全,2017,48(10):1-4,4.基金项目
国家自然科学基金资助项目(51574093) （51574093）
贵州大学引进人才资助项目(贵大人基合字(2015)30号) （贵大人基合字(2015）
贵州省科学技术基金资助项目(黔科合J字[2015]2049号) （黔科合J字[2015]2049号）
