Analysis of Steel Prop Supports Subjected to Vertical and Lateral Loading

Details

• Personal Author:
  Batchler, Timothy ; Mohamed K
• Description:
  Standing supports have been used in coal mines for decades to enhance roof support capability. Sometimes standing supports are used as a tool to resist the lateral movement of spalled ribs. Researchers from the National Institute for Occupational Safety and Health (NIOSH) are conducting a testing program for different types of standing supports (steel and timber) to investigate the effect of lateral loading on their vertical loading capacities and the factors affecting their lateral loading capacities. In this paper, the mine roof simulator (MRS), at the NIOSH Pittsburgh research facility, was used to determine the response of steel props to vertical and horizontal loadings. Finite element models (FEMs) were developed and verified using the tested steel props. To justify the testing program for testing standing supports with end-conditions of rock-like materials, the verified prop models were used to study the effect of a wide range of roof and floor materials (gray shale, shale, and claystone) on the critical buckling loads of the steel props. Also, several lateral loading scenarios were evaluated in which the steel props were laterally loaded at different heights. The critical buckling load for steel props setting up against a claystone roof and floor was found to be one-half of that shown by the MRS test where roof and floor platens are made of steel. Minimum prop performance was observed when the lateral load was applied at the mid-height of the steel prop, especially at small lateral displacement (less than 2 in). [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety Software
• Keywords:
  Author Keywords: Steel Props Buckling Coal Mines Coal Ribs Computer Software Floors Horizontal Stress Lateral Loading Roof Supports Roof Support Systems Simulation Methods Structural Analysis

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• Series:
  Mining Publications
• ISSN:
  2524-3462
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  39
• Issue:
  5
• NIOSHTIC Number:
  nn:20066092
• Citation:
  Min Metall Explor 2022 Oct; 39(5):2001-2010
• Contact Point Address:
  Khaled Mohamed, CDC NIOSH, Pittsburgh, PA, USA
• Email:
  Kmy1@cdc.gov
• Federal Fiscal Year:
  2023
• NORA Priority Area:
  Mining
• Peer Reviewed:
  True
• Source Full Name:
  Mining, Metallurgy & Exploration
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:1b118cabd840b0a5bd00e9f312b00f07253c30d08dcaff343db862d7f29b7d02f1effd342ec0444828e44c5e454abefceb1f3baea33c45bc201ba7ed643ba6ca
• Download URL:
  https://stacks.cdc.gov/view/cdc/215571/cdc_215571_DS1.pdf
• File Type:
  [PDF - 1.75 MB ]