Effect of igneous intrusions and normal faults on coalbed methane storage and migration in coal seams near the outcrop

Chuan-jie Zhu () and Bai-quan Lin

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2015, vol. 77, issue 1, 17-38

Abstract: Faults and igneous intrusions simultaneously encountered in a coal seam can significantly affect the gas emission, i.e., by changing the storage (sorption) and migration properties. Knowledge of the mechanism about their effect will help the gas extraction or methane control in underground coal mines. Fifty samples were collected from five different roadways, where the sequence is truncated by 3.61-m-thick igneous intrusion, in the Tashan coal mine in Datong, China. Coal rank was changed from sub-bituminous coal or high volatile bituminous coal to anthracite, low or medium volatile bituminous coal. Enrichment of coal pores and thus higher specific surface area led to an increase of measured Langmuir volume (from 18.14–21.71 and 22.37–24.81 to 26.43–27.35 and 31.43–34.85 m 3 /t in Panels I and II, respectively). As a result, the measured gas contents in Panel I lie between 0.3 and 0.5 m 3 /t which were lower than those in Panel II (with values between 0.7 and 1.9 m 3 /t). However, faults serve as conduits for gas flow in Tashan coal mine. The gas content lies between 0.72 and 0.98 m 3 /t near the faults and between 1.04 and 1.89 m 3 /t far away from the faults in Panel II. Copyright Springer Science+Business Media Dordrecht 2015

Keywords: Coalbed methane; Igneous intrusion; Fault; Coal seam; Gas content (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://hdl.handle.net/10.1007/s11069-014-1577-6 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:nathaz:v:77:y:2015:i:1:p:17-38

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11069

DOI: 10.1007/s11069-014-1577-6

Access Statistics for this article

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards is currently edited by Thomas Glade, Tad S. Murty and Vladimír Schenk

More articles in Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards from Springer, International Society for the Prevention and Mitigation of Natural Hazards
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().