Drill for making wide diameter and high depth holes and method for carrying out said holes

A method for drilling wide diameter deep holes in soil comprising:

• providing a drill having a base having a rotary equipped with a clamp and having translation cylinders, the rotary rotating and the translation cylinders axially moving a series of drill stems having a tool at a free end thereof, said drill having a hydraulic joint linked to the rotary, a carrier canister connected to the drill stems and at least one winch linked to the hydraulic joint for rotating with the drill stems, the winch having at least one wire rope, the carrier canister slidably connected with the drill stems for displacement by the wire rope, between the rotary and the tool, the tool and winch being connected:
• to the stems which have at least one longitudinally projecting guide having a lower free end located distally from the tool, the canister having an axial inner sleeve having at least one internal groove into which the at least one longitudinally projecting guide slides in correspondence to an axial movement of the canister along the stems, at least one groove having a transversal shoulder as a stop for receiving the lower free end of guide when the canister is hooked to the series of stems;
• slidably descending the canister along the stems until the canister reaches a bottom of the hole;
• rotating the canister for pressing the canister on the hole bottom for transferring a material into the canister;
• lifting the canister to the soil surface and unloading the canister;
• and,
• rotating the tool and stems during the descending, loading and unloading of the canister.

A method for drilling wide diameter deep holes in soil comprising:

• providing a drill having a base having a rotary equipped with a clamp and having translation cylinders, the rotary rotating and the translation cylinders axially moving a series of drill stems having a tool at a free end thereof, said drill having a hydraulic joint linked to the rotary, a carrier canister connected to the drill stems and at least one winch linked to the hydraulic joint for rotating with the drill stems, the winch having at least one wire rope, the carrier canister slidably connected with the drill stems for displacement by the wire rope, between the rotary and the tool, the tool and winch being connected to the stems which have at least one longitudinally projecting guide having a lower free end located distally from the tool, the canister having an axial inner sleeve having at least one internal groove into which the at least one longitudinally projecting guide slides in correspondence to an axial movement of the canister along the stems, at least one groove having a transversal shoulder as a stop for receiving the lower free end of the guide when the canister is hooked to the series of stems;
• slidably descending the canister along the stems until the canister reaches a bottom of the hole;
• rotating the canister for pressing the canister on the hole bottom for transferring a material into the canister;
• lifting the canister to the soil surface and unloading the canister;
• and,
• before the lifting of the canister, deactivating stem rotation and counter rotating the stems to cause an axial release of the canister from the stems.