Gas flow analysis for the impact of gob gas ventholes on coalbed methane drainage from a longwall gob

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• 关键词：Coalbed methane ; Gob gas drainage ; Gas migration ; Gob gas venthole
• 刊名：Journal of Natural Gas Science and Engineering
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：36
• 期：part_PB
• 页码：1312-1325
• 全文大小：6748 K
• 卷排序：36

文摘

We build a mathematical model of gob gas migration. Gob gas venthole can extract the methane in the deep part of the gob massively. The extraction flow of the GGV has great influences on the gob airflow speed. The case shows the advantages of GGVs on CBM development and controlling gob gas.