Method for improving soft ground by sand drain method and cylind

Details Method for improving soft ground by sand drain method and cylind Method for improving soft ground by sand drain method and cylind

1982-08-25

1984-05-29

Taylor, Dennis L.

Hydraulic and earth engineering

Drainage or irrigation

Porous waterway, e.g., sand drain, etc.

405 36, 383 1, 383 2, 383102, 383107, 383117, 383118, 383120, 229 48R, 229 48T, E02B 1100

Patent

active

044511752

ABSTRACT:
Soft ground is improved by a sand drain method wherein a casing pipe is inserted in the soft ground followed by insertion of a cylindrical bag composed of a water-permeable material into the casing pipe; sand is filled in the cylindrical bag and then only the casing pipe is drawn out from the soft ground whereby a sand drain is constructed in the soft ground; and then, a load is imposed on the sand drain-constructed region to remove water through the sand drain and consolidate the soft ground. The diameter of at least a part of the cylindrical bag is capable of being increased when the consolidation load is imposed on the sand drain-constructed region.

REFERENCES:
patent: 2609880 (1952-09-01), Dyer
patent: 2788821 (1957-04-01), Marelle
patent: 3204760 (1965-09-01), Whiteford
patent: 3396541 (1968-08-01), Lamberton
patent: 3646766 (1972-03-01), Hilton et al.
patent: 4239105 (1980-12-01), Gilbert

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