IC 9331 Longwall Gate Road Roof Instability And Methods Of Control In The Lower Kittanning Coalbed Of Central Pennsylvania
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 26
- File Size:
- 9493 KB
- Publication Date:
- Jan 1, 1992
Abstract
This report presents the results of a cooperative study between BethEnergy Mines Inc., Ebensburg, PA, a central Pennsylvania coal mining company, and the U.S. Bureau of Mines to investigate longwall development entry roof instability. In-mine mapping of geologic and deformational features was conducted to reveal the major ground control problems encountered during gate road development. In addition, mining-induced pillar load monitoring was used to indicate development loading on variously dimensioned gate road pillars and to determine if pillar yielding occurred. Finally, visual observations of a variety of roof control methods were used to determine the most effective support elements for controlling cutter roof failure.
Citation
APA: (1992) IC 9331 Longwall Gate Road Roof Instability And Methods Of Control In The Lower Kittanning Coalbed Of Central Pennsylvania
MLA: IC 9331 Longwall Gate Road Roof Instability And Methods Of Control In The Lower Kittanning Coalbed Of Central Pennsylvania. The National Institute for Occupational Safety and Health (NIOSH), 1992.