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Mapping of joints in Pre-cambrian granitic rock masses
Summary The joints on the wall of a 665 m long unlined access tunnel to a cavern system were mapped along a horizontal scan line. Several outcrops close to the tunnel were mapped in the same manner. The data were analysed plotting the joint directions on equal area stereographic plots. The mean joint directions were determined from the plots. The results obtained from the tunnel and from the outcrops are very similar and in good agreement with the impression the geologists got during the construction of the cavern system. The joint distances were analysed by drawing histograms of all the joints measured in the access tunnel and on the outcrops. Curves of Weibull distribution were fitted to the histograms. When the joints were grouped according to the joint directions it was possible to calculate the true mean joint distances of the different joint sets based on the mapping along a straight horizontal scan line.
Mapping of joints in Pre-cambrian granitic rock masses
Summary The joints on the wall of a 665 m long unlined access tunnel to a cavern system were mapped along a horizontal scan line. Several outcrops close to the tunnel were mapped in the same manner. The data were analysed plotting the joint directions on equal area stereographic plots. The mean joint directions were determined from the plots. The results obtained from the tunnel and from the outcrops are very similar and in good agreement with the impression the geologists got during the construction of the cavern system. The joint distances were analysed by drawing histograms of all the joints measured in the access tunnel and on the outcrops. Curves of Weibull distribution were fitted to the histograms. When the joints were grouped according to the joint directions it was possible to calculate the true mean joint distances of the different joint sets based on the mapping along a straight horizontal scan line.
Mapping of joints in Pre-cambrian granitic rock masses
Saari, K. (author) / Ylinen, A. (author)
1979
Article (Journal)
Electronic Resource
English
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
Mapping of joints in Pre-cambrian granitic rock masses
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