A Method for Arranging a Network of Surface Boreholes for Abandoned Gob Methane Extraction
Abstract
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.
Recommended Citation
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
Department(s)
Mining Engineering
Keywords and Phrases
Abandoned gob methane; Green mining; Methane extraction; Network arrangement; Surface borehole
International Standard Serial Number (ISSN)
0144-5987; 2048-4054
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2018 The Authors, All rights reserved.
Publication Date
01 Nov 2019
Comments
Financial support for this work was provided by the Natural Science Foundation of China (No. 51404257), Fundamental Research Funds for the Central Universities (No. 2014QNB39), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (No. SZBF2011-6-B35).