Spiral flights for improved soil mixing and efficient boring for

Details Spiral flights for improved soil mixing and efficient boring for Spiral flights for improved soil mixing and efficient boring for

1993-02-18

1994-11-29

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405233, 405269, E02D 312, E02D 518

Patent

active

053684150

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. As the auger shafts of the multi-shaft auger machine penetrate the soil, spiral flights attached to the auger shaft above the initial auger blades assist soil in passing by supporting structures located between adjacent auger shafts. The spiral flights both assist in raising the soil beyond the supporting structures and also prevent reagglomeration of the soil prior to passing by the supporting structures. The spiral flights have a diameter less than that of the auger blades attached to the shaft below the spiral flights and have a connection ranging from 360 degrees to 720 degrees around the shaft. The use of the spiral flights within this location results in a reduction in the amount of energy needed to auger a borehole, thereby resulting in excess energy for a more homogeneous mixing of the chemical hardener in the soil through which the auger passes. In addition to the increase in efficiency because of the available energy, the spiral flights also directly increase the surface area of structures attached to the auger shaft thereby increasing the mixing efficiency of the auger shaft as it passes through the borehole. The increased efficiency and the prevention of reagglomeration of soil are most beneficially observed in clay or clay-like soils.

REFERENCES:
patent: 4886400 (1989-12-01), Taki et al.
patent: 4906142 (1990-03-01), Taki et al.
patent: 4909675 (1990-03-01), Taki
patent: 5013185 (1991-05-01), Taki
patent: 5047086 (1991-09-01), Hayakawa et al.
patent: 5118223 (1992-06-01), Taki

Affiliated with

Also associated with

Rating

Spiral flights for improved soil mixing and efficient boring for does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spiral flights for improved soil mixing and efficient boring for, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spiral flights for improved soil mixing and efficient boring for will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-70104