Method to build a water seal, creep-line increasing cutoff
OwnerSándor Barkászinventor
Life of this patent
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Abstract
A method for building a continuous water seal, creep line increasing cutoff includes the steps of forming spaced borings into the soil in the presence of slurry; developing narrow slots between the formed borings by driving foil boards with cutting edges secured to the bottom therof between adjacent formed borings; and connecting adjacent foil board, which extend between and are recessed into a side of the borings, by means of compensating joint-pins. The steps of developing narrow slots and connecting adjacent foil boards are repeated so that the last boring is connected to the connected, recessecd foil boards forming the cutoff. A prefered embodiment of the invention may include armoring the borings by injecting concrete in the place of the slurry.
Claims10
A method to build a continuous, water seal, creep-line increasing cutoff comprising the steps of:
- drilling borings in soil at spaced-apart distances along a desired length of a cutoff wall;
- driving down a first foil board into the soil between adjacent drilled borings in the presence of slurry to a desired depth by means of hammering a driving pile in each of the adjacent drilled borings and repeating the driving step so that the first foil board and an adjacent foil board are recessed in the soil according to the length of the cutoff wall, wherein each foil board has a connecting member on each side and a cutting edge secured onto the bottom of each foil board that protrudes over an edge of each board, and a driving pile is placed onto each side of the foil board;
- and
- connecting the side of the first, recessed foil board and the side of the adjacent, recessed foil board in the space of an intermediate drilled boring with a compensating joint-pin wherein the cutting edge has two ends, one on either side of the foil board, where one end is recessed from one side of the cutting edge and the other end is offset from the other side of the cutting edge, and the steps of drilling borings, driving down of an adjacent foil board step and connecting a first, adjacent recessed foil board to a second, adjacent foil board with compensating joint pins are repeated along the full length of the cutoff wall.
Dependencies are inferred from the claim text.