Development
The SISKA is at the cutting edge of cave monitoring techniques and tests its instruments in the field under demanding conditions (high humidity, aquatic and/or muddy conditions, etc). To cope with these particularly difficult conditions, the SISKA develops tailor-made solutions adapted to each case of study.
The SISKA is developing and proposing karst-specific methods for characterising and quantifying the risks associated with karst during the construction of underground structures (instabilities, water ingress).
KARSYS is a 3D deductive approach offering an explicit model of the karst based on the geological characteristics of the site and the hydraulic principles governing karstification (and by extension karstic hydrogeology). On a defined site, the approach is deployed in 4 stages: (i) identification of the karstic properties of the aquifers, (ii) establishment of a 3D geological model of the aquifer units, (iii) establishment of a 3D hydrogeological model of the aquifers by integration of the hydrological data and (iv) identification and delimitation of the flow systems.
Tunnelling in karstic environments often poses problems with serious and costly consequences. KarstALEA provides geologists working in the field of underground works with a practical method for assessing karstic massifs, as a complement to standard SIA 199. The result is a predictive longitudinal profile of the structure that describes in some detail the probability of karstic conduits occurring in the various segments of the tunnel, as well as the characteristics of these voids.
KarstALEA: Practical instructions to download
The SISKA develops and applies KarstMOD (hydrological and hydraulic models) to simulate groundwater dynamics and thus assess the recharge (effective infiltration), storage and flow of one or more outlets in particular.
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