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US 10,598,008 B2Granted
Drilling method, method for performing a pressure meter test, and corresponding assembly
AssigneeCalyf
InventorFrancis Cour
Life of this patent
Estimating the term…
Abstract
A method for drilling into the ground includes digging a longitudinal hole in the ground, and simultaneously lining the hole with a tube extending substantially over an entire longitudinal length of the hole. The tube includes an inner tube and an outer tubular sheath inserted between the inner tube and a wall of the hole. After digging the hole, the inner tube is removed from the hole, with the outer sheath remaining in place inside the hole.
Claims15
A method for carrying out a pressuremeter test, the method comprising:
- digging a longitudinal hole in an area of ground, and simultaneously lining the hole with a tube extending substantially over an entire longitudinal length of the hole, the tube comprising an inner tube and an outer tubular sheath inserted between the inner tube and a wall of the hole,
- after digging the hole, removing the inner tube from the hole, with the outer sheath remaining in place inside the hole;
- inserting a pressuremeter probe into the outer sheath;
- inflating a deformable cell of the pressuremeter probe by a fluid, the cell radially stressing the outer sheath against the wall of the hole;
- and
- measuring pressure using the pressuremeter probe.
3 more elements
A kit for carrying out a pressuremeter test, the kit comprising:
- a digger comprising a drill for drilling a longitudinal hole in an area of ground;
- a tube configured to extend substantially over an entire longitudinal length of the hole, the tube comprising an inner tube and an outer tubular sheath inserted between the inner tube and a wall of the hole;
- a tube-pusher configured to place the tube in the hole simultaneously with drilling;
- a block configured to hold the outer sheath in place inside the hole while the inner tube is removed from the hole;
- a pressuremeter probe configured to be inserted into the outer sheath, including a deformable cell;
- an inflator configured to inflate the deformable cell using a fluid, such that the deformable cell radially stresses the outer sheath against the wall of the hole.
3 more elements
Dependencies are inferred from the claim text.