Patent ID: 6978849

Claim:
A method of boring a hole using a boring system constituted by a simple auger and a dip tube slidably mounted in said auger, said dip tube having no outside helical blade and at least one injection hole and a boring tool at a bottom end of the dip tube, the method comprising the following steps: causing said auger and said dip tube to descend and to rotate simultaneously, said boring tool of the dip tube being substantially level with the bottom end of the auger; interrupting descent and rotation of said auger so that the auger constitutes means for anchoring the boring system in the ground; and simultaneously causing the dip tube alone to descend and to rotate, whereby the rotation and descent of the boring tool on the dip tube perform boring by displacing the ground at the bottom end of the borehole, with the ground in which the hole is bored being compacted.