Engineering Method for the Design and Placement of Wood Cribs

Details

• Personal Author:
  Barczak, Thomas M. ; Gearhart, David F.
• Description:
  Wood cribs are used extensively to stabilize mine openings by providing resistance to deflections of the immediate mine roof and floor and by supporting the weight of unstable rock masses. While the unit costs of these supports are relatively low, their extensive use results in significant costs to coal mine operators. The U.S. Bureau of Mines (USBM) has developed a Wood Cribe Performance Model that computes the load capacity of wood cribs as a function of the displacement of the crib structure induced by mine roof and floor convergence. This permits comparison of the loading characteristics of various crib constructions and enables systems to be designed with consideration of the load conditions imposed by the mine environment. The design method matches the stiffness, strength, and stability of the crib structure with expected rock mass behavior to determine a crib design and employment spacing that will provide the lowest cost support. [Description provided by NIOSH]
• Subjects:
  Geology Mining Occupational Health Safety Software
• Keywords:
  Computer-models Computer-software Ground-control Ground-stability Longwall-mining Mining-industry
• Series:
  Mining Publications
• Publisher:
  U.S. Bureau of Mines
• Document Type:
  Text
• Genre:
  Book
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  103-116
• NIOSHTIC Number:
  nn:20024712
• Citation:
  New technology for longwall ground control. Proceedings: U.S. Bureau of Mines Technology Transfer Seminar. Pittsburgh, PA: U.S. Bureau of Mines, 1994 Aug; :103-116
• Editor(s):
  Mark C; Tuchman RJ; Repsher RC; Simon CL
• Federal Fiscal Year:
  1994
• Peer Reviewed:
  False
• Source Full Name:
  New technology for longwall ground control. Proceedings: U.S. Bureau of Mines Technology Transfer Seminar.
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d1846efa86e6affd039eb855a9164388bc74cd477ce638f727650ae2cfe3aa92e267d356ad72c82b774020c5d2e3a54bd5f030b3a8dab74896c5d533cdc5f4f2
• Download URL:
  https://stacks.cdc.gov/view/cdc/220820/cdc_220820_DS1.pdf
• File Type:
  [PDF - 2.64 MB ]