Mining Publication: Use of Vertical Boreholes for Assisting Ventilation of Longwall Gob Areas
ShareCompartir
Original creation date: March 1969
An experimental degasification program using a vertical borehole and vacuum pump to drain gas from the gob area of a longwall panel was successful at Bethlehem Mines Corporation, Cambria Division, No. 33 coal mine. Sixty-one million cubic feet of methane has been exhausted during a 9-month period. Daily production time in the panel increased as a result of lower methane levels in the returns. Removal of large quantities of methane in this way and the exclusion of it from the ventilating system will provide reduced cost in mine ventilation and provide a safer environment for the mine.
Authors: CH Elder
Reference - March 1969
NIOSHTIC2 Number: 10000105
U.S. Department of the Interior, Bureau of Mines. Technical Progress Report 13, 1969; :1-6
See Also
- Coal Mine Methane: A Review of Capture and Utilization Practices with Benefits to Mining Safety and to Greenhouse Gas Reduction
- Comparisons Between Cross-Measure Boreholes and Surface Gob Holes
- Determining the Source of Longwall Gob Gas: Lower Kittanning Coalbed, Cambria County, PA
- Hydraulic Stimulation of a Surface Borehole for Gob Degasification
- Investigation of Longwall Face Ventilation Air-Splitting Methods for Improved Dust Control
- Methane Control for Underground Coal Mines
- Methane Drainage: Experience With Hydraulic Stimulation Through Slotted Casing
- A Numerical Evaluation on the Effects of Impermeable Faults on Degasification Efficiency and Methane Emissions During Underground Coal Mining
- Rotary Drilling Holes in Coalbeds for Degasification
- Three Coal Mine Gob Degasification Studies Using Surface Boreholes and a Bleeder System
- Page last reviewed: 9/21/2012
- Page last updated: 9/21/2012
- Content source: National Institute for Occupational Safety and Health, Mining Program