Soil fragmentation members and multiple lateral support structur

Details Soil fragmentation members and multiple lateral support structur Soil fragmentation members and multiple lateral support structur

1993-09-23

1995-05-23

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405236, 405240, 405269, E02D 312, E02D 518

Patent

active

054175224

ABSTRACT:
An apparatus for constructing subterranean structures, soil-chemicals mixture or soil-agents mixture by using a multi-shaft auger machine to mix soil with a chemical hardener in situ in a borehole. As the auger shafts of the multi-shaft auger machine penetrate the soil, a plurality of lateral support structures shear soil and provide additional lateral support. The plurality of lateral support structures are spaced vertically by a length no greater than thirty feet. Additionally, soil fragmentation members attached to the lateral support structures fragment soil reconsolidations to aid in mixing of soil. The soil fragmentation members have a length no greater than the difference between the radius of at least one auger blade and the radius of the shaft and no less than one-third the difference between the radius of at least one auger blade and the radius of the shaft. The shearing and fragmentation of the soil result in a more homogeneous mixture of the chemical hardener and the soil through which the auger passes. In addition, the shearing and fragmentation of the soil reduces the energy necessary for mixing. Prevention of reagglomeration of soil is most beneficially observed in clay or clay-like soils.

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