A method for arranging a network of surface boreholes for abandoned gob methane extraction

作者：Qin, Wei; Xu, Jialin^*; Hu, Guozhong; Gao, Jie; Xu, Guang

来源：Energy Exploration & Exploitation, 2019, 37(6): 1619-1637.

DOI：10.1177/0144598717753904

• Abandoned gob methane
• methane extraction
• surface borehole
• green mining
• network arrangement

To optimize the arrangement of a network of surface boreholes for abandoned gob methane extraction, a method for regional division of abandoned gobs based on their connectivity is proposed. Based on vertical and horizontal connectivity criteria, the abandoned gobs in Yangquan Coal Mine No. 3 are divided into 28 regions. Based on the abandoned gob methane sources, a calculation model for abandoned gob methane reserves is established. The abandoned gob methane reserves of connected regions in Yangquan Coal Mine No. 3 are predicted by using the developed estimation model. An abandoned gob methane extraction field test was conducted, and the results showed that the methane flow rate of vertical borehole #1 reached 3.6 m(3)/min. Based on the test results of vertical borehole #1 and the abandoned gob methane reserve calculation in the connected region, surface boreholes in a connected region were arranged in Yangquan Coal Mine No. 3.

• 出版日期2019-11
• 单位中国矿业大学（北京）