FABRICATION AND TESTING OF A WATER CANNON FOR ROCK TUNNELING EXPERIMENTS

A water cannon was fabricated and tested to evaluate its effectiveness in disintegrating rock for potential application in hard rock tunneling. Experiments were conducted in the laboratory and in field tests in a dolomitic limestone mine and in a granitic gneiss quarry. As jet stagnation pressures were increased in the range from below 100,000 to 650,000 psi, the specific energy for disintegrating rock generally decreased, except for some evidence of a minimum specific energy for Barree granite at a jet pressure near 400,000 psi. The water cannon tests obtained specific energy values which are competitive with the best rolling cutter tunneling machines. Results to date indicate that practical application of water cannons has high potential in rock tunneling.

  • Corporate Authors:

    Terraspace, Incorporated

    304 North Stonestreet Avenue
    Rockville, MD  United States  20850
  • Authors:
    • Cooley, W C
  • Publication Date: 1974-2

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 93 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00261545
  • Record Type: Publication
  • Report/Paper Numbers: FRA-ORD&D-74-38 Final Rpt.
  • Contract Numbers: DOT-FR-20042
  • Files: TRIS
  • Created Date: Nov 6 1974 12:00AM