Stability of the Highwalls of „Baufeld Westen III“, Amsdorf Open Mine, Germany

Project description:

Stability investigations for individual slopes and slope systems during progressing, active operation and for final situations considering the aspect of maximum but safe decarburization of the mine. The soil mechanical works focused and still focus on: • Guarantee of occupational safety during overburden and coal recovery without immediate re-support by an interior dump on the basis of determined permissible soil mechanical conditions and slope parameters • Improvement of slope profiling in the area of the planned final situations considering the aspect of a water level increasing on the long term in the area of the slope toe (filling after operational discontinuation) and re-support by interior dump • Guarantee of lasting stability for all individual slopes, partial and overall slope systems considering existing and future geotechnical conditions.

Reason:

Expansion of the construction field to the north and east for maximum decarburization of the mine.

Services:

Geotechnical supervision during mining operations
Elaboration of stability manifests for technological interim situations and temporary final situations
Elaboration of a final report

Advantages:

Close-by hydrologists and soil mechanical engineers
Closeness = promptness
Quality assurance by experienced, qualified engineers (officially recognized experts) and complex interdisciplinary completion of services

Additional project data:

Pit slopes with heights of more than 100 m high
6 to 7 transform faults
Dip of layers in mine up to 12°
Up to 15 soil layers
Low residual shear strengths in the transform faults
Upper and lower aquifer
Highly confined lower aquifer
Low number of dewatering elements, low dewatering progress

At a glance:

Client:

ROMONTA GmbH

Project value:

45.000 €

Project duration:

2006 – 2008

Images:

Grafische Darstellung der Hochwandstabilität im Baufeld Westen III der Amsdorf Open Mine, Deutschland.

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