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Joint apertures in a pre-cambrian crystalline rock mass in sweden

Ouvertures De Fissures Dans Un Massif De Roches Cristallines Précambriennes En Suède

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Summary

Physical measurements of joint apertures in blasted rock walls and on rock outcrops give an unreliable result, due to the disturbances created by the blasting operations and in the latter case due to weathering effects. In this paper, hydraulic tests are used in order to obtain more significant values of the joint apertures. On the basis of the results of water-pressure tests, the joint apertures have been calculated in a crystalline rock mass.

Résumé

Mesurer, par des moyens physiques, la largeur des fissures dans les parois rocheuses abattues à l’explosif et dans les affleurements aboutit à un resultat inexact vu les perturbations des travaux à l’explosif ou, dans le cas des roches dećouvertes, à cause de l’effritement. Dans cette étude nous nous sommes servis de tests hydrauliques afin d’avoir des valeurs d’ouverture de fissure plus exactes. Nous basant sur les résultats des tests d’injection hydraulique nous avons calculé les ouvertures de fissures dans la masse de roche cristalline.

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Authors and Affiliations

  1. Statens Vattenfallsverk, Fack, S-162 87, Vällingby, Sweden

    Carlsson A.

  2. Sveriges Geologiska Undersökning, Bredgränd 4, S-753 20, Uppsala, Sweden

    Olsson T.

Authors
  1. Carlsson A.
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  2. Olsson T.
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Carlsson, A., Olsson, T. Joint apertures in a pre-cambrian crystalline rock mass in sweden. Bulletin of the International Association of Engineering Geology 18, 127–130 (1978). https://doi.org/10.1007/BF02635358

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