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Detection and control of spontaneous heating in coal mine pillars - a case study.

Authors
Timko-RJ; Derick-RL
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9553, 1995 Jan; :1-18
NIOSHTIC No.
20022927
Abstract
This U.S. Bureau of Mines study examined spontaneous heating episodes in coal mine pillars in an active underground coal mine. The information obtained from these incidents was then analyzed to learn which sampling methods provided the earliest indication of pillar heating. The objective of this study was to discover if the location of future events of pillar spontaneous heating could be inferred from the available information. The spontaneous heating-prone area in this evaluation involved pillars located just inby the mine portals. Several detection methods were used to determine gas levels outside as well as inside the affected pillars. It was hoped that, by incorporating external and internal sampling methods into an organized program, locations undergoing spontaneous heating could be determined more readily. This study found that by drilling small-diameter boreholes into the pillars, then obtaining gas samples from the affected pillars, the ability to locate early spontaneous heating episodes was improved. However, the ability to accurately predict future spontaneous heating events remains in question.
Keywords
Mining-industry; Underground-mining; Coal-mining; Fire-hazards; Safety-research
CAS No.
630-08-0
Publication Date
19950101
Document Type
Report of Investigations
Fiscal Year
1995
NTIS Accession No.
PB95-236790
NTIS Price
A03
Identifying No.
RI-9553
ISSN
1066-5552
NIOSH Division
PRC
Priority Area
Other Occupational Concerns
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9553
State
PA; CO
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