For the tubulose screw rod basis of anchoring, such as the component on ground, have the matrix with cylindrical region and multiple sand spades of the circumference by surrounding screw rod basis at tunnel element.

摘要

(1) For anchoring of components in the ground, which has a base body (1) with at least one cylindrical region (1.2) and a forward movement of the cutting blade (2.1) which generates, at least one of the addition of the cutting blade (3) at the upper region of the base body (1) is mounted.