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Control and monitoring of gas in blind auger headings.

Authors
Volkwein-JC
Source
Proceedings of the 6th International Mine Ventilation Congress, May 17-22, 1997, Pittsburgh, Pennsylvania. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc. 1997 Feb; :165-168
Link
NIOSHTIC No.
20027788
Abstract
Advances in mining technology have enabled deeper seams of coal to be mined from the surface. Highwall mining is frequently used to mine areas at the perimeters of a surface mine when removal of the overburden becomes uneconomical or threatens environmentally sensitive surface features. At the same time, advances in materials and technology have enabled highwall mining of coal that creat blind headings over 300 meters in length. Deeper surface mining and deeper highwall penetration depths have lead to more frequent encounters with methane gas. While this coal is remotely mined from the surface, underground ignitions of methane have propagated to the surface and injured miners. Methods described in this paper show how this hazard can be correctly monitored and controlled for auger type highwall mining machines. Research indicates that small quantities of gas liberated during mining migrate to the face, creating higher gas concentrations than would otherwise be expected. Using the same principles that cause the gas to migrate to the face, researchers have shown that inert gas introduced at the collar of the hole can inert the entire hole, thus ensuring safe conditions for mining.
Keywords
Monitoring-systems; Mining-equipment; Mining-industry; Methanes; Injuries; Surface-mining; Hazards; Gases; Safety-measures; Safety-monitoring; Inert-gases
CAS No.
74-82-8
Publication Date
19970201
Document Type
Conference/Symposia Proceedings
Editors
Ramani-RV
Fiscal Year
1997
NTIS Accession No.
NTIS Price
ISBN No.
0873351460
NIOSH Division
PRL
Source Name
Proceedings of the 6th International Mine Ventilation Congress
State
PA
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