Method of relieving earth pressure in a working area

Details Method of relieving earth pressure in a working area Method of relieving earth pressure in a working area

1979-11-16

1981-12-29

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

299 11, E21F 1700

Patent

active

043079784

ABSTRACT:
The earth pressure in the underground working area is effectively alleviated by injecting high-pressure liquid into a weak ground stratum underlying the ore bed being excavated thereby to enlarge the stress envelope formed around the working face. The liquid injection hole is formed as by drill means to extend from the working face or a neighboring gateway through an intermediate layer into the weak stratum preferably at a point outside of the stress envelope initially formed.

REFERENCES:
patent: 999000 (1911-07-01), Trippe
patent: 3026096 (1962-03-01), Love
patent: 3097830 (1963-07-01), Love et al.
patent: 3384416 (1968-05-01), Ruehl et al.
patent: 3673807 (1972-07-01), Serata
patent: 4017121 (1977-04-01), Trent
patent: 4084384 (1978-04-01), Serata

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