Neue Untersuchungen zum Systemverhalten von Lockermassenfüllsäulen alter Tiefbauschächte

Investigations on stability behaviour of non-cohesive filled shafts.

State-of-the-art knowledge on stability of abandoned mining shafts filled with mostly granular, low cohesive materials is based on model testing by WBK in the 1970ies. Results from this research are incorporated in specific recommendations of the mining authorities, e.g. assuming suction load on shaft covering slabs. While introducing an active risk managing procedure on abandoned shafts, RAG decided to relaunch research activities on this topic. Using a geotechnical centrifuge facility, a comprehensive test series was performed with major results presented in this paper that lead to an updated view on fill stability in abandoned mining shafts.