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Results and conclusions of stress measurements at Stripa
Lawrence Berkeley Laboratory.
Colorado School of Mines, Golden.
Luleå tekniska universitet.
Swedish State Power Board.
Show others and affiliations
1983 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

This paper describes the results of stress measurements at Stripa, compares the results obtained by different techniques, and recommends a stress measurement program for a hard rock repository site. The state of stress at the Stripa Mine has been measured both in a 381-m-deep hole drilled from the surface and in holes drilled from the drifts underground. Hydraulic fracturing and several overcoring methods have been used (Lulea triaxial gauge, CSIRO gauge, USBM gauge, Swedish State Power Board deep-hole Leeman triaxial gauge). The results of overcoring and hydraulic fracturing agree well, particularly for the magnitude and orientation of the greatest stress. A recommended program for stress measurement at a repository site would include hydraulic fracturing and deep-hole overcoring in a deep hole drilled from surface, and overcoring (Lulea gauge and USBM gauge) and hydraulic fracturing from holes drilled from underground openings when access is available. Propagation of the hydraulic fractures should be monitored acoustically to determine their location and orientation.

Place, publisher, year, edition, pages
1983.
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-27107Local ID: 071cc412-c1a8-4707-a639-d481dcf49eafOAI: oai:DiVA.org:ltu-27107DiVA: diva2:1000288
Conference
Workshop on in site experiments in granite associated with geological disposal of radioactive waste : 24/10/1982 - 24/10/1982
Note

Godkänd; 1983; 20120110 (andbra)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-02-05Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
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  • vancouver
  • Other style
More styles
Language
  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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