Study on Permeability Improvement Technology by Injecting Air into the Gas Drainage Borehole in Low-Permeability Coal Seam
Joint Authors
Hui, Li
Chengwei, Guo
Yuanfang, Sun
Shaoshuai, Guo
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-12
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Gas extraction cycle is too long in low-permeability coal seam.
In order to solve the problem, the basic principle about gas drainage drilling for gas injection technology is studied to increase permeability.
And the mathematical model is established.
Gas is injected into the low-permeability coal seam by numerical simulation.
The results indicate that the best condition is a negative pressure drainage at 26 kPa and a gas injection pressure at 0.6 MPa in the vertical direction and in the horizontal direction of the injection hole.
In Shanxi Daping Coal Mine 3113 working face, the field test is implemented.
As a result, the test is successful.
During the 14 d gas injection constantly, gas content of coal seam is reduced from 12.33 m3/t to 7.12 m3/t, greatly reducing the risk of coal and gas outburst elimination time required.
American Psychological Association (APA)
Hui, Li& Chengwei, Guo& Yuanfang, Sun& Shaoshuai, Guo. 2018. Study on Permeability Improvement Technology by Injecting Air into the Gas Drainage Borehole in Low-Permeability Coal Seam. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1115508
Modern Language Association (MLA)
Hui, Li…[et al.]. Study on Permeability Improvement Technology by Injecting Air into the Gas Drainage Borehole in Low-Permeability Coal Seam. Advances in Civil Engineering No. 2018 (2018), pp.1-7.
https://search.emarefa.net/detail/BIM-1115508
American Medical Association (AMA)
Hui, Li& Chengwei, Guo& Yuanfang, Sun& Shaoshuai, Guo. Study on Permeability Improvement Technology by Injecting Air into the Gas Drainage Borehole in Low-Permeability Coal Seam. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1115508
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115508