an anchoring device for a tension member of an earth - or rock anchor , where a support element transmitting the tensile force is arranged between an anchoring element undisplaceably connected with the tension member and an anchor plate abuttable against a support base , the support element includes a cylindrical hollow body surrounding the anchoring element , whose inner wall has in its lower region projections protruding inward beyond its inner contour , against which the anchoring element abuts in a force - transmitting manner with partial regions of its cross - sectional area . if a predetermined tensile force is exceeded , the support element and / or the anchoring element can plastically deform in the region of their inter - engaging surfaces , so that a relative displacement occurs in axial direction . distance or spacer pins are provided in a head plate placed upon the tension member for visual indication of the relative displacement , which after contact with the surface of the hollow body exit upwards from the head plate .