Apparatus for building-up bursting forces

Details Apparatus for building-up bursting forces Apparatus for building-up bursting forces

1988-06-17

1989-09-12

Massie, Jerome W.

Mining or in situ disintegration of hard material

Expansible breaking-down devices

Wedge

E21C 3702

Patent

active

048653918

ABSTRACT:
An apparatus for building-up bursting forces has a main casing filled with ice and having an outlet port and a variable-volume working chamber having an inlet port for communication with the outlet port of the main casing. There are provided a plurality of auxiliary casings filled with ice and a means for alternately establishing communication between the outlet ports of the main and auxiliary casings and the inlet port of the variable-volume working chamber.

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