Vertikaler Erdstofftransport beim Trockendrehbohren mit langer Schnecke im Mantelrohr in bindigem Boden

A special manufacturing process to create large bore piles made of reinforced concrete is "dry rotary drilling with long auger in column tubes" (BolSiM). This work presents theoretical views on cutter soil extraction processes with BolSiM and especially practical trials at a new model experiment rig. In addition to the transportation characteristics in the process used so far, modifications such as supporting the extraction with pressured air or by using electrocapillary effects are studied.