Example of gravimetric measurement. Monitoring of the excavation of the gallery at the Červený Vrch metro station in Prague. A negative residual anomaly indicates the onset of a mass deficit (see arrow).

Geophysical monitoring of long-term variations of the rock mass properties in areas affected by the ground collapses

Ministry of Education, Youth and Sports

2009 – 2012

Goals of the project:
The aim of the project was to develop an optimal methodology of geophysical monitoring for areas at risk of subsidence. The GEMOSS methodology is used to monitor the degree of rock mass loosening in mined areas using repeated geophysical measurements. Thanks to this, it is possible to assess the degree of risk of sudden deformation (fall) of the earth's surface in places historically mined or to monitor the reaction of the rock massif and its settlement in places of excavated tunnel structures. The GEMOSS methodology is conceived as a new part of geotechnical monitoring of mined areas or tunnel constructions, which suitably complements the existing methods. For works of this kind, G IMPULS owns a Utility Industrial Design.