Inflatable envelope systems for use in excavations

Details Inflatable envelope systems for use in excavations Inflatable envelope systems for use in excavations

1976-01-08

1977-11-08

Gilliam, Paul R.

Mining or in situ disintegration of hard material

Processes

Forming blocks

61 45F, 299 11, 249 65, E21F 1500

Patent

active

040569390

ABSTRACT:
Inflatable envelope systems for use with slurry products in back filling and other operations involving subterranean works. An envelope is inflated to partially crush deformable means disposed between the envelope and the wall of an excavation chamber so as to conform to the wall profile and oppose the flow of solidifiable material between the envelope and the wall.

REFERENCES:
patent: 2990166 (1961-06-01), Walsh
patent: 3431736 (1969-03-01), Veda
patent: 3831318 (1974-08-01), Richmond
patent: 3899153 (1975-08-01), Friedl

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