Accession Number : ADD001496

Title :   Tunnel Excavation with Electrically Generated Shock Waves.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Allgood,Jay R

Report Date : 08 Oct 1974

Pagination or Media Count : 5

Abstract : 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.

Descriptors :   *Tunneling, *Electric discharges, *Patents, Shock waves, Drilling, Pulses, Power supplies, Excavation

Subject Categories : Civil Engineering
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE