Preparing rock compartments  for blasting on a 100 m high coastal cliff (La Réunion, 2006). © BRGM - Jean-Louis Nedellec


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GEFRAC3-EXP : the study of water-rock interactions in fractured geothermal reservoirs

The Gefrac3-Exp study (Ademe agreement) tackles the problem of understanding fluid-rock interactions that can occur in fractures in geothermal reservoirs. It focuses on the changes in a fracture’s permeability as a result of such interactions under given temperature and strain conditions.

GESMINE 3D : the 3D management of the former mines

The BRGM Mine Safety and Prevention Department (DPSM) has a large database concerning the Gardanne coal basin (Bouches-du-Rhône) that was built up during the coal mining era. These data have been supplemented with new data derived from active networks (microseismic, piezometric, waterquality, gas,...

Groundwater : study of the applicability of passive samplers

Implementation of the EU Water Framework Directive aimed at achieving a good ecological status for the waters in the European Union by 2015, and also of various public monitoring policies, requires reliable analytical methods for assessing the chemical state of the water bodies. Today, the routine...

Karst floods : characterization and development of management tools

Taking groundwater into consideration in the genesis of flash floods in karst areas is a recent area of activity for BRGM. Although the phenomenon is known and a few specific episodes have been described, there has so far been no characterization study or prediction tool. BRGM teams from...

Mecasol : codification of seismic wave propagation in a complex geological environment

Accurately reproducing the spatial and temporal evolution of observed seismic waves in order to predict (for a given earthquake scenario) future ground motions is a major objective for seismologists. The Mecasol project tackles this problem.

Optique CO2 : infrared fibre-optic sensors for monitoring CO2 geological storage

The geological sequestration of CO2 is essential, complementing other methods, if one is to achieve the targeted reduction of CO2 emissions by 2050 and avoid a major climatic upheaval. For it to be effective in contributing to the reduction of greenhouse gases, however, it has to be shown that the...

PAP 3D : three-dimensional quantitative analysis of earthquake impact

Protecting people and property against earthquakes requires knowledge of the direct and induced effects of earthquakes. Among these, site effects – notably soil liquefaction – are phenomena that can cause significant damage to buildings and exposed infrastructures. A proper evaluation of these...

Quantitative modelling of the landslide hazard with the Alice tool

Alice, a BRGM software aid for mapping landslide hazard, enables a quantified approach to the hazard. It is based on a mechanical approach (geotechnical model), in which the main physical properties of the environment are quantified by a mathematical model that calculates a probability of landslide...


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