摘要
作者用意大利 Carlo-Erba 2000型压汞仪对煤(突出煤和非突出煤)的微孔隙体积、孔道分布、孔隙结构和孔隙突破压力以及煤层气体运移和抽放评价等方面的问题进行了研究。作者将煤的微孔隙(37.5～75000(?)孔隙半径)按孔道分布特征分成三大类和9小类,并提出了“瓦斯包”的概念和分类。同时还提出“突出煤具有多阶段突出性”和“煤中微孔隙-微裂隙和煤层甲烷扩散效应是煤层气体运移的主要方式”的观点。
The authors used Carlo-Erba 2000 Mercury Pressure Porosimeter to study mi-cropore volume,distribution of pore passage,pore structure and pore outburstingpressure,migration of coal-bed gas and gas drainage of coal seams with and with-out proneness of outburst.The micro-pores,with a radius of 37.5～75000(?)were divided into 3 classes and 9 sub-classes according to distribution of porepassage.The concept and classification of“gas pocket”was introduced.Views thatcoal prone to outburst has the tendency of multiple outbursts,and that factors af-feeting migration of gas are micropore,micro-fissure and effect of gas diffusionare expressed.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1991年第3期86-95,共10页
Journal of China Coal Society
关键词
煤
孔隙
瓦斯
突出
抽放
评价
coal
pore
coal-bed gas
migration
gas outburst
