A Method for Arranging a Network of Surface Boreholes for Abandoned Gob Methane Extraction
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 m3/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.
W. Qin et al., "A Method for Arranging a Network of Surface Boreholes for Abandoned Gob Methane Extraction," Energy Exploration and Exploitation, vol. 37, no. 6, pp. 1619-1637, SAGE Publications, Nov 2019.
The definitive version is available at https://doi.org/10.1177/0144598717753904
Keywords and Phrases
Abandoned gob methane; Green mining; Methane extraction; Network arrangement; Surface borehole
International Standard Serial Number (ISSN)
Article - Journal
© 2018 The Authors, All rights reserved.
01 Nov 2019