Gas Distribution Law for the Fully Mechanized Top-Coal Caving Face in a Gassy Extra-Thick Coal Seam
Joint Authors
Wang, Wenlin
Wang, Fangtian
Zhao, Bin
Li, Gang
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-11-13
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Mine gas overflow is a serious threat to the safe and efficient longwall mining of gassy coal seams.
Based on the field mining conditions and gas extraction of the fully mechanized top-coal caving face of a gassy coal mine, the space volume fraction distribution and emission (extraction rate) of gas in the face were tested by an arrangement of measuring points in the stereo grid.
The isograms of gas volume fraction distribution for each measurement section and air direction in the face are drawn.
The research shows that each measurement section gas volume fraction distribution is presented for an asymmetric concave curve along the vertical direction of the coal wall in the air-inlet side and the air-return side of the face; on the working face air-return side, the determination of gas volume fraction distribution of the section appears as falling straight line along the vertical direction of the coal wall.
Before the first weighting, the absolute quantity of gas emission in the working face increased with the advancing of the working face, reached the maximum at the time of the first weighting, and then remained stable.
American Psychological Association (APA)
Wang, Wenlin& Wang, Fangtian& Zhao, Bin& Li, Gang. 2018. Gas Distribution Law for the Fully Mechanized Top-Coal Caving Face in a Gassy Extra-Thick Coal Seam. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1115860
Modern Language Association (MLA)
Wang, Wenlin…[et al.]. Gas Distribution Law for the Fully Mechanized Top-Coal Caving Face in a Gassy Extra-Thick Coal Seam. Advances in Civil Engineering No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1115860
American Medical Association (AMA)
Wang, Wenlin& Wang, Fangtian& Zhao, Bin& Li, Gang. Gas Distribution Law for the Fully Mechanized Top-Coal Caving Face in a Gassy Extra-Thick Coal Seam. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1115860
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115860