摘要
在对３０多个煤岩样品在不同围限压力下测得的孔隙度进行研究的基础上，结合煤层甲烷开采的生产特点，讨论了煤岩孔隙度在围限压力下的变化特征。进而探讨了煤岩地下孔隙度的计算方法和煤岩有效孔隙体积压缩系数的变化特征。
ystematic research on the porosity data obtained under different confining pressures frommore than 30 coal samples is conducted considering the production characteristic of coalbed methane. Resultsshow features of coal porosity varying with the confining pressures.And then, underground coal porositycalculation method and variational characteristic of coal effective pore volume compressibility are discussed.Moreover, an analysis of the difference between coalseam and sandstone as a reservoir is also included in thispaper.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1994年第3期27-31,共5页
Coal Geology & Exploration
关键词
煤岩
孔隙度
变化特征
煤层
porosity
effective pore volume compressibility
confining pressure
coal seams
