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Mining Publication: Evaluating Ventilation Parameters of Three Coal Mine Gobs
Keywords: Gobs Seals Sulfur hexafluoride Ventilation
Original creation date: January 1986
Authors: RJ Timko, FN Kissell, ED Thimons
Information Circular - January 1986
Download PDF Document (1.18 MB)
NIOSHTIC2 Number: 10005496
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9109, 1986 Jan; :1-16
The Bureau of Mines used sulfur hexafluoride (sf6) tracer gas to evaluate the effectiveness of gob ventilation and/or sealing practices at three coal mines, each having different problems associated with their mined-out areas. The purpose of these ventilation studies was to better understand whether current techniques employed for ventilation or sealing are successful at minimizing the potential for gob fires and explosions. The work performed at each mine is discussed: one is a longwall operation that uses ventilation to carry off hazardous gases, and two are room-and-pillar operations, each with far different concerns, that seal off the gobs to isolate them from the main mine ventilation. In all cases, employment of the Bureaus sf6 tracer gas technique resulted in answers to questions raised by the mine operators concerning the effectiveness of their gob ventilation or sealing practices in preventing mine fires.
Image of publication Evaluating Ventilation Parameters of Three Coal Mine GobsInformation Circular - January 1986
Download PDF Document (1.18 MB)
NIOSHTIC2 Number: 10005496
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9109, 1986 Jan; :1-16
See Also
Demonstration of Safety Plugging of Oil Wells Penetrating Appalachian Coal Mines
Determining the Source of Longwall Gob Gas: Lower Kittanning Coalbed, Cambria County, PA
Effects of Ventilation and Gob Characteristics on Spontaneous Heating in Longwall Gob Areas
Face Ventilation Measurement with Sulfur Hexafluoride (SF6)
Modeling the Effect of Seal Leakage on Spontaneous Heating in a Longwall Gob Area
Prediction of Porosity and Permeability of Caved Zone in Longwall Gobs
Simulation of Spontaneous Heating in Longwall Gob Area with a Bleederless Ventilation System
Strengthening Existing 20-psi Mine Ventilation Seals With Carbon Fiber-Reinforced Polymer Reinforcement
Sulfur Hexafluoride as a Mine Ventilation Research Tool - Recent Field Applications
Using Sulfur Hexafluoride as a Gaseous Tracer to Study Ventilation Systems in Mines
Page last reviewed: November 18, 2015
Page last updated: November 18, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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