Jet-mixing method and jet-mixing apparatus

Details Jet-mixing method and jet-mixing apparatus Jet-mixing method and jet-mixing apparatus

2011-01-25

2011-01-25

Mayo-Pinnock, Tara (Department: 3671)

Hydraulic and earth engineering

Foundation

Columnar structure

C405S253000, C175S021000, C137S890000

Reexamination Certificate

active

07874766

ABSTRACT:
The invention provides a jet-mixing method for casting a pile of predetermined diameter by thrusting or feeding into the ground a rod provided at its lower end with a first jet nozzle section for jetting ground improvement medium and a second jet nozzle section for jetting reactant in substantially the same direction as the jet direction of the first jet nozzle section, and provided above the first and second jet nozzle sections with a third jet nozzle section for mixing and jetting compressed air and water in a direction opposite the jet direction of the first and second jet nozzle sections, jetting compressed air and water within a predetermined range while simultaneously rotating and upwardly extracting the rod from the ground, thereby jet-cutting a ground improvement region into a cylindrical shape, discharging mud generated by the cutting operation to the ground surface through a bored hole, and jetting the reactant from the second jet nozzle section and jetting the ground improvement medium from the first jet nozzle section. A jet-mixing apparatus for implementing the method is also provided.

REFERENCES:
patent: 3763654 (1973-10-01), Matsushita
patent: 4397588 (1983-08-01), Goughnour
patent: 6231270 (2001-05-01), Cacossa
patent: 6241426 (2001-06-01), Schellhorn
patent: 2000 027173 (2000-01-01), None
patent: 2000 290991 (2000-10-01), None
patent: 2001 279661 (2001-10-01), None
patent: 2005 113647 (2005-04-01), None

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