Use of foam as a borehole ground support system

Details Use of foam as a borehole ground support system Use of foam as a borehole ground support system

1984-01-16

1986-04-22

Husar, Cornelius J.

Mining or in situ disintegration of hard material

Processes

Stabilizing underground structure

299 17, 405258, 405288, E21C 3706, E21C 4500

Patent

active

045837848

ABSTRACT:
A method is disclosed which allows an overburdened area over an underground mine cavity to be supported by the initiation of foam on liquid retained in the cavity which liquid results from the hydraulic borehole mining of minerals in the cavity.

REFERENCES:
patent: 3155177 (1964-11-01), Fly
patent: 3273643 (1966-09-01), Billings et al.
patent: 3335792 (1967-08-01), O'Brien et al.
patent: 3439953 (1969-04-01), Pfefferle
patent: 3478520 (1969-11-01), Andy
patent: 3491832 (1970-01-01), Raza
patent: 3892442 (1975-07-01), Janssen
patent: 3893511 (1975-07-01), Root
patent: 3951457 (1976-04-01), Redford
patent: 4232741 (1980-11-01), Richardson et al.

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