TUNNEL EXCAVATION WITH ELECTRICALLY GENERATED SHOCK WAVES

The patent relates to an apparatus and method for excavating tunnels with electrically generated shock waves. The tunneling apparatus is comprised of a rotatable barrel for cutting a peripheral ring about a core and a bit which simultaneously bores a hole in the center of the core. The drive for the rock bit also contains electrodes which are pulsed to produce shock waves in the core to peel off a desired thickness of rock layer.

• Supplemental Notes:
  • Government-owned invention available for licensing. NTIS Number AD-D001496/9ST, but no availability.
• Corporate Authors:

  Department of the Navy

  Washington, DC  United States 
• Authors:
  • Allgood, J R
• Publication Date: 0

Media Info

• Pagination: 5 p.

Subject/Index Terms

• TRT Terms: Drilling; Drills; Electric discharge; Electric power supply; Excavation; Excavations; Patents; Pulses; Shock waves; Tunneling; Tunnels
• Old TRIS Terms: Excavation technology; Tunnel drills
• Subject Areas: Bridges and other structures; Energy; Railroads;

Filing Info

• Accession Number: 00094254
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: PAT-APPL-346 201 Patent
• Files: TRIS
• Created Date: Mar 29 1976 12:00AM