Shaft construction method

Details Shaft construction method Shaft construction method

1989-03-23

1991-06-25

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405233, 405269, E02D 312, E02D 546

Patent

active

050262165

ABSTRACT:
A method of constructing shafts and continuous walls quickly and efficiently. The construction process consists of one step in which air and a ground hardener are injected through a jetting pipe element to form a column-shaped region of soil mixed with hardener; and another step in which a hardening inhibitor is injected into the soil-hardener mixture region by the jetting element, the shaft then being formed by excavating the portion of the ground that has not been hardened because of the presence of the inhibitor.

REFERENCES:
patent: 3969902 (1976-07-01), Ichise et al.
patent: 4566825 (1986-01-01), Hirai et al.
patent: 4624606 (1986-11-01), Nakanishi et al.

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