HRP20151199T1 - Method for producing a floor mortar wall in the floor - Google Patents

Claims (14)

1. A method for making a plastered wall on the ground (60) in the ground (50) with a drilling device (10) with at least two continuous augers (20) located closely parallel to each other, where at least two continuous augers (20) are drilled into the ground (50), thereby loosening the soil material (53), which is then mixed in the well (52) with a slurry of binder (55) in the soil mortar (57), which, after removing at least two continuous augers (20), hardens into a plastered wall on the ground (60) in a well (52), indicated by the fact that – in the first step, at least two continuous auger drills (20) are drilled to the depth of the well, while the soil is simultaneously crushed and loosened (50), where the loosened soil material (54) mostly remains in the well (52), - in the second step, at least two continuous screw augers (20) are raised to the intermediate position (58) in the well (52) while the binder suspension (55) is poured in, where between the bottom of the well (54) and the intermediate position (58) the lower mixing area is obtained (56), in which the loosened soil material (53) is mixed with a poured binder suspension (55) in the soil mortar (57), - in the third step, at least two continuous screw augers (20) are lowered into the lower mixing area (56), and - in the fourth step, at least one continuous auger (20b), which serves to transport soil material (53) from the lower mixing area (56) in the upward direction, and at least one continuous auger (20a, 20c), which serves to transport of loosened soil material (53) from the upper area of the well (59), above the intermediate position (58), into the lower mixing area (56), are operated at least until the soil mortar (57) is transported from the lower mixing area (56) ) to the ground surface (51). 2. The method according to patent claim 1, characterized in that a drilling device (10) with three closely spaced continuous auger bits (20) is used. 3. The method according to patent claim 2, characterized in that in the fourth step two outer continuous screw augers (20a, 20c) are driven to transport the soil material (53) into the lower mixing area (56), and the central continuous screw the auger (20b) is driven to transport the soil mortar (57) from the lower mixing area (56) in an upward direction. 4. The method according to any one of the patent claims 1 to 3, characterized in that in the first step during the loosening of the soil (50) a binder suspension (55) is poured for lubrication through at least one hollow body (22) of the continuous screw auger (20). . 5. The method according to any one of patent claims 1 to 4, characterized in that an intermediate position (58) is provided in the lower half of the well (52). 6. A method according to any one of claims 1 to 5, characterized in that in the first step, depending on the direction of the auger augers (24), where the continuous auger augers (20) are driven to drill into the ground (50 ), where the direction of rotation changes at given time intervals. 7. The method according to any one of the patent claims 1 to 6, characterized in that in the second step the rotation speed and axial movement of the continuous screw augers (20) are adjusted depending on the inflow of the binder suspension (55), so that in the lower mixing area (56) loosened soil material (53) and binder suspension (55) are easily mixed into the soil mortar (57). 8. The method according to any one of patent claims 1 to 7, characterized in that before or after the second step, the continuous auger drills (20) are under rotary drive without axial movement. 9. The method according to any one of patent claims 1 to 8, characterized in that in the third step, the continuous auger drills (20) are lowered to the bottom of the well (54). 10. The method according to any one of the patent claims 1 to 9, characterized in that in the fourth step the soil plaster (57), transported upwards to the surface of the soil (51), is transported back towards the lower mixing area (56) . 11. The method according to any one of patent claims 1 to 10, characterized in that a vertical circular flow is achieved in the well (52). 12. The method according to any one of patent claims 1 to 11, characterized in that in the fourth step, the pouring of the binder suspension (55) is stopped while the continuous auger drills (20) continue to rotate for additional homogenization of the soil mortar (57) in the borehole (52). 13. The method according to any one of the patent claims 1 to 12, characterized in that in order to make a continuous plastered wall on the ground (60), a number of closely spaced wells (52) are made. 14. Drilling device with at least two continuous auger bits (20) with a rotary drive for making a plaster wall on the ground (60), where at least one continuous auger bit (20) has a central cavity in the body (22) for pouring a binder suspension (55) ) in the well (52), characterized by the fact that control of the automatic implementation of the procedure is provided in accordance with any of the patent claims 1 to 13.