Patent ID: 7287608

Claim:
A method for drilling a hole in soil or rock material and for forming an anchoring in said hole, comprising the steps of forming a borehole by the introduction of a drill bit mounted on a drill rod assembly; introducing tensioning elements coupled to the drill bit into the borehole during the drilling procedure; detaching the drill rod assembly from the drill bit and removing the drill rod from the borehole upon completion of the borehole; during the removal of the drill rod assembly from the borehole, introducing a curable fluid into the borehole through a hollow space provided in the drill rod assembly; securing the drill bit and the tension elements to the borehole wall in the end region facing the interior of the borehole by an anchoring or fixing element on the drill bit; and tensioning and/or centering the tension elements by a partial distortion or twisting while shortening the effective lengths of the tension elements substantially immediately upon completion of the borehole and introduction of the curable fluid without waiting for the curing of the curable fluid in the borehole.