Physical-Mathematical Model of Methane Flow in Nonstationary Stress Field in Coal Seam

被引：1
|
作者：
Kurlenya, M. V. [1 ]
Lee, K. H. [2 ]
Kazantsev, V. G. [3 ]
Lee, Eun Hee [2 ]
机构：
[1] Russian Acad Sci, Chinakal Inst Min, Siberian Branch, Novosibirsk 630091, Russia
[2] VostNII Sci Ctr, Kemerovo 650002, Russia
[3] Ind Safety LLC, Biisk 659302, Russia
来源：
JOURNAL OF MINING SCIENCE | 2024年 / 60卷 / 03期
关键词：
modeling; coal seam; gas drainage; flow; sorption pressure; stress state; occlusion stress; piezoconductivity;
D O I：
10.1134/S1062739124030013
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
A physical-mathematical model of natural gas flow in methane-containing coal seams based on the concept of interaction of geomechanical and gas-dynamic factors in coal degassing process. Methane flow calculation is performed, and it is found that the cause of the decrease in the methane yield is the increase in stresses around producing wells, the change in the occlusion pressure of gas in cracks and pores, as well as the piezoconductivity of rock mass.
引用
收藏
页码：357 / 365
页数：9
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