Excavation boring and shoring method and equipment
OwnerTed R. Dimitroffinventor
Life of this patent
Estimating the term…
Abstract
A reaming tool forms a hole in the ground with a sidewall and a floor, and a deepened channel around the perimeter of the floor adjacent to sidewall. Fluid is provided during excavation to form a slurry to hold the sidewall and prevent cave-in of material into the hole. After the hole reaches a desired depth, the reaming tool is removed, and a shoring wall is inserted into the hole through the slurry and seated in the perimeter edge channel. The shoring wall includes vertical tubes for connection to a dewatering machine. Then, the slurry can be vacuumed from the hole, while the dewatering machine keeps the empty hole as dry as possible. Extending the shoring wall into the channel beyond the floor of the hole helps seal flow of water from entering the hole.
Claims15
A method of forming and shoring a pit in the ground, comprising:
- drilling a hole downwardly into the ground soil, with the hole having a sidewall, a floor at a first depth below a surface of the ground surrounding the hole, and a perimeter channel around the hole at a second depth deeper than the first depth;
- soil above the floor being removed during the drilling step;
- retaining the sidewall of the hole with fluid pressure from water added to the hole during drilling;
- the perimeter channel having spaced apart upright parallel inner and outer walls, and a bottom wall extending perpendicularly between the inner and outer walls;
- and
- installing a shoring ring into the hole, the shoring ring having a lower end residing in the perimeter channel.
A method of creating and shoring a work hole in the ground, comprising:
- excavating soil from the ground to form a hole having a sidewall and with a bottom defining a floor below ground level with a perimeter edge, and to form a channel extending around the perimeter edge of the floor and below the floor;
- the floor and the channel being formed using a single drilling bit;
- supplying water to the hole during excavation to retain the soil in the sidewall;
- and then installing a shoring ring into the hole, the shoring ring having a lower end residing in the channel.
Dependencies are inferred from the claim text.