Drilling device for executing diaphragm walls and method thereof

摘要

A drilling method and device is for the execution of diaphragm walls by cutters, (131, 105, 110) carried by a frame (130) supported by suspension and movers (102). A guide hole (200) is formed as far as the depth specified in the design at the center of the panel to be made. Excavation is started with the introduction into the guide hole (200) of a guide element (101) that is fixed with respect to the tool-holder frame and having geometry such as to copy the guide hole along which it slides during excavation. Excavation is carried out as far as the depth specified in the design. The tool is extracted from the excavation and the excavation is filled with concrete and a panel is formed. The method is repeated so as to form adjacent panels.

主权项

1. A method for drilling, and forming a diaphragm wall panel by a cutting tool carried by a frame supported by suspension and movement means, the method comprising the following consecutive steps:
a) forming a single guide hole as far as a depth specified in a design; b) starting excavating to form one panel, excavating outside the single guide hole, and maintaining the single guide hole at a center point of an excavation to form the panel, and at the same time, introducing a guide element into the single guide hole, said guide element being rigidly fixed with respect to the frame and having a geometry configured for mating with the single guide hole; said guide element guiding the cutting tool along the depth of the guide hole to avoid deviation of the cutting tool; c) executing the excavation, excavating as far as the depth specified in the design by said cutting tool, said guide element sliding downward along said guide hole during execution of the excavation; d) extracting the cutting tool from the excavation; e) filling of the excavation with casting concrete and formation of the panel.