In the Field – Cribs Versus Cables

Details

• Personal Author:
  Mucho, Thomas P.
• Description:
  A field site in the Eagle Coalbed served as the first full-scale test of a cable bolted cribless tailgate on a longwall in the eastern United States. The Pittsburgh Research Center completed this initial test in December 1995 at a mine in southern West Virginia. Previously, most cribless cable bolt test areas and usage had been in the Western United States. Generally, the immediate roof in the mine changes from a sandstone to shale. In the study area, the immediate roof consisted of massive, but small (45.7-61 cm (18-24 in)) sandstone layers separated by thin coal streaks. Primary roof support was 1.07 m (3.5 ft), grade 60, No. 6 resin bolts installed on 152-cm (5ft) centers using T-2 channels. Cables were 3.66 m (12 ft) with 1.52 m (5ft) of resin anchorage in rows of 1.2 m (4ft) on 1.8 m (6 ft) centers. Intentions were to locate the test site in what could be anticipated to be the worst ground conditions along the longwall panel within a given timeframe. As a result, the study site was positioned under a stream valley that had been assiciated with past ground control problems. The site was also under a longwall barrier pillar in the Upper Powellton Coalbed that had been previously mined. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Dust Mining Occupational Health Safety Ventilation
• Keywords:
  Cables Coal-mining Dusts Ground-control Longwall-mining Mining-industry Underground-mining
• Series:
  Mining Publications
• ISSN:
  0271-3888
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  5-6
• NIOSHTIC Number:
  nn:20040967
• Citation:
  Holmes Saf Assn Bull 1998 Mar; :5-6
• Federal Fiscal Year:
  1998
• Peer Reviewed:
  False
• Source Full Name:
  Holmes Safety Association Bulletin
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:bd5d7d2dac7559b9910a02c1401466be1019131b966a7c21a6e45cf32646b70ad06de6e7e9f35912269d4f83ce28b7bb7ff0a02b7b8ad466ede6ef41687384aa
• Download URL:
  https://stacks.cdc.gov/view/cdc/227438/cdc_227438_DS1.pdf
• File Type:
  [PDF - 1.76 MB ]