US 11,988,044 B2
Excavation boring and shoring method and equipment
Ted R. Dimitroff, Columbia, MO (US)
Filed by Ted R. Dimitroff, Columbia, MO (US)
Filed on Sep. 16, 2022, as Appl. No. 17/932,797.
Prior Publication US 2024/0093555 A1, Mar. 21, 2024
Int. Cl. E21B 10/26 (2006.01); E21B 33/14 (2006.01); E21D 5/01 (2006.01)
CPC E21B 10/26 (2013.01) [E21B 33/14 (2013.01); E21D 5/01 (2013.01)] 15 Claims
OG exemplary drawing
 
9. 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.