Portable electrohydraulic mining drill

Details Portable electrohydraulic mining drill Portable electrohydraulic mining drill

1996-11-27

1999-04-27

Tsay, Frank S.

Boring or penetrating the earth

With seismic shock generating

175 16, 166249, E21B 700, E21B 714

Patent

active

058969381

ABSTRACT:
An electrohydraulic drilling system for drilling holes in material such as rock utilizing a drill stem connected to a flexible cable. The electrical spark or plasma that creates the electrohydraulic pressure wave is powered by an electrical pulse propagated down the cable from a pulse generator to the drill stem. An advance mechanism on a jackleg support is utilized to move the drill into the rock during the drilling process. The drill stem and cable combination enable holes to be drilled in the roof of tunnels where the floor to roof height is less than the depth of the hole to be drilled. The electrohydraulic process provides higher drilling efficiencies than conventional systems.

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patent: 4479680 (1984-10-01), Wesley et al.
patent: 4741405 (1988-05-01), Moeny et al.
patent: 5106164 (1992-04-01), Kitzinger et al.

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