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Identifying Physical Property Trends in Coal Mine Structures Using Portable On-Site Test Devices.


PB96131636

Publication Date 1995
Personal Author Vandergrift, T. L.; Conover, D. P.; Hanna, K.
Page Count 92
Abstract Physical properties of coal mine roof, rib, and floor can affect the type and severity of entry failure. Knowledge of the mine-wide trends of these physical properties can be valuable in developing effective ground control plans. Within the context of a larger effort to improve entry stablitiy in high horizontal stress fields and varying geologic conditions, the U.S. Bureau of Mines (USBM) has evaluated three portable, onsite test devices to determine their suitability for mine-wide physical property trend identification. The devices evaluated were the borehole shear tester (BST), the Schmidt hammer, and the point load tester (PLT).
Keywords
  • Coal mines
  • Shear tests
  • Load tests
  • Strata control
  • Roofs
  • Ribs(Supports)
  • Physical properties
  • Compressive strength
  • Hammers
  • Boreholes
  • Trends
  • Room and pillar mining
  • Field tests
  • Test equipment
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 48A - Mineral Industries
Corporate Authors Bureau of Mines, Denver, CO. Denver Research Center.
Document Type Technical Report
Title Note Rept. of investigations/1995.
NTIS Issue Number 199606
Identifying Physical Property Trends in Coal Mine Structures Using Portable On-Site Test Devices.
Identifying Physical Property Trends in Coal Mine Structures Using Portable On-Site Test Devices.
PB96131636

  • Coal mines
  • Shear tests
  • Load tests
  • Strata control
  • Roofs
  • Ribs(Supports)
  • Physical properties
  • Compressive strength
  • Hammers
  • Boreholes
  • Trends
  • Room and pillar mining
  • Field tests
  • Test equipment
  • Bureau of Mines
  • 48A - Mineral Industries
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