SPT HAMMER ENERGY MEASUREMENT

A field measurement system and procedure which measures the energy delivered by a drill rig system was developed and successfully used to study the factors which affect delivered energy. Results are presented which indicate that the energy delivered by certain drill rig systems varies widely in engineering practice. The energy delivered to the drill stem varied with the number of turns of rope around the cathead, the fall height, drill rig type hammer type, and operator characteristics. The type of hammer had a strong influence on the energy transfer mechanism between the anvil and the drill stem. It appears that the safety (sleeve enclosed) hammer is more efficient in transmitting the available kinetic energy through the anvil to the drill stem than the donut hammer. (Author)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Kovacs, W D
  • Salomone, L A
• Publication Date: 1982-4

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 599-620
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 108
  • Issue Number: GT4
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Drilling machines; Energy transfer; Field tests; Hammers; Kinetic energy; Soil penetration test
• Uncontrolled Terms: Field measurements
• Subject Areas: Energy; Geotechnology; Highways; I41: General Soil Surveys;

Filing Info

• Accession Number: 00361345
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 30 1982 12:00AM