Geomechanics and mining
Contact: Dr. A. Stäubert
E-mail: GMBk-utec.de
Phone: + 49 3632 610 170
Fax: + 49 3632 610 105
Performance
Complex mining mechanical observation of mining activities and other cavities such as safety relevant solutions
- Identification of load behaviour through stress monitoring surveys by means of hydraulic fracturing
- Underground deformation observations
- Obtaining geotechnical data from inaccessible or displaced cavities
- Photographic documentation of rock mechanical relationships
- Assessment of the safety of miners' ascent routes
- Observation of tunnels including rock cavities
- Assessment of solution to hydrological problems as well as danger due to flammable gases
- Complex surveillance of mine areas
- Proof of the effect of filling and long-term geomechanical remote observation
- Scientific consultation during renovation and decontamination of old mines, geotechnical characteristics of filling
Filling test in a waste mine
Kali-Umwelttechnik Sondershausen GmbH succesfully applied the following three methods of land fill:
- On-site solidity investigations by means of static impression testing
- Rammsondierung according to mine technical standard DIN 4094
- Dynamic load pressure plate TB BF -StB, part B 8.3
Stress tests by means of hydraulic fracturing - in the framework of complex technical surveys and observation provide the guidelines for:
- proof of safety and surveillance of mines in the operational phase,
- mining dimension, management and extension surveys,
- closing down operations,
- safety analysis for the post-operational phase of mines,
- the proof of safety for further use as permanent storage places or underground dumps,
- validation of technical and economic projections for mining
| ||
 Measuring system hydraulic fracturing | |  Plate loading test |
Technology
- Required diameter:
42mm or 46mm (special bore set) - Measurable bore hole lengths:
55m horizontal, 30m vertical at the ridges, 25m vertical on the level - Working pressure:
40...63MPa - High performance sensor for pressure, volume and temperature measuring
- Digital data recording
| |||
|
Reference
- Complex surveillance of the South Harz Potash district and further mining areas
Mining Operations, Germany - Systematic hydrofracture-stress test measurements in the permanent store for radioactive waste in Morsleben exploratory mining site Gorleben
BGR Hannover, Germany - Survey of the planned UTD Lower Rhine/ utilization of waste materials foreign to mining as fill material
Solvay Salz, Germany
GTS, Germany
GSES, Germany
NDH-E, Germany
GVV, Germany - Foreign Mining Consultation
NISCO Dopolan, Iran
SDD Djebel Djerissa, Tunisia
URAL-KALI AG Berensniki, Russia