• The buildings of the IfG Leipzig - Südwerkbunker (left) and the Kauengebäude (right)

    The buildings of the IfG Leipzig - Südwerkbunker (left) and the Kauengebäude (right)

  • The rock mechanical laboratory of the IfG Leipzig

    The rock mechanical laboratory of the IfG Leipzig

  • Drilling cores of the Leine rock salt (Na3)

    Drilling cores of the Leine rock salt (Na3)

  • Dimensioning

    Dimensioning

  • Large-diameter borehole experiment in Springen

    Large-diameter borehole experiment in Springen

  • Modelling of a cavern

    Modelling of a cavern

  • Subsidence over a	cavitary field (modelling)

    Subsidence over a cavitary field (modelling)

Geotechnical measurements

For evaluation of in situ boundary conditions we perform various geotechnical measurements (e.g. in situ stress and deformation). The following equipment is available:

 

  • Various drilling equipments for probe sampling and to establish measurement boreholes
  • Digital borehole camera for borehole diameters greater than 40 mm (e.g. for acquisition of the borehole condition, for investigation of cracks close to the contour, break-out-effects and changes of the material), custom-made-product for the company NICOM Technologie; max. borehole length 120 m
  • Hydrofrac probes for in situ stress measurements (borehole diameter 42 mm, 62 mm and 101 mm) with micro-acoustic localisation of crack propagation
  • Extensometer and inclinometer for the measurement of ground movements (incremental extensometer and horizontal inclinometer)
  • Radial convergence probe for convergence measurement and for stress analysis with unloading method
  • Pressure probes and rate-controlled pumps for investigation of transport properties of competent rock and natural fractures, including studies of coupled effects.