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The role of the disturbed rock zone in radioactive waste repository safety and performance assessment. A topical discussion and international overview

Technical Report:

Abstract

A discussion was presented of the role and relative importance of the disturbed rock zone (DRZ) around the underground openings of a repository for nuclear waste in crystalline rock. The term disturbed rock zone was defined and possible criteria to be sued to distinguish if from undisturbed rock was suggested. The processes decisive for the hydraulic characteristics of the DRZ were discussed. With regard to the integral hydraulic characteristics of the DRZ, the effects of the excavation methodology, stress redistribution, thermal changes, chemical changes and backfill were discussed. A review of in-situ observations of the DRZ was provided. Model analysis where the DRZ has been explicitly or implicitly represented, either from a phenomenological and performance assessment aspect were reviewed. The implications of the disturbed rock zone for the safe performance of a nuclear waste repository were discussed. Conceptual models for the geometry of the DRZ and hydraulic conductivity distribution in the DRZ were suggested. (au) (82 refs.).
Authors:
Winberg, A [1] 
  1. Conterra AB, Goeteborg (Sweden)
Publication Date:
Jun 01, 1991
Product Type:
Technical Report
Report Number:
SKB-TR-91-25
Reference Number:
SCA: 540250; 052002; PA: AIX-23:010988; SN: 92000637726
Resource Relation:
Other Information: PBD: Jun 1991
Subject:
54 ENVIRONMENTAL SCIENCES; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; GEOLOGIC FRACTURES; HYDRAULIC CONDUCTIVITY; BACKFILLING; CRACK PROPAGATION; EXCAVATION; EXPERIMENTAL DATA; RADIOACTIVE WASTE DISPOSAL; ROCK MECHANICS; ROCKS; SIMULATION; UNDERGROUND DISPOSAL; 540250; 052002; SITE RESOURCE AND USE STUDIES; WASTE DISPOSAL AND STORAGE
OSTI ID:
10111346
Research Organizations:
Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE92613493; TRN: SE9100248010988
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
SWDN
Size:
77 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Winberg, A. The role of the disturbed rock zone in radioactive waste repository safety and performance assessment. A topical discussion and international overview. Sweden: N. p., 1991. Web.
Winberg, A. The role of the disturbed rock zone in radioactive waste repository safety and performance assessment. A topical discussion and international overview. Sweden.
Winberg, A. 1991. "The role of the disturbed rock zone in radioactive waste repository safety and performance assessment. A topical discussion and international overview." Sweden.
@misc{etde_10111346,
title = {The role of the disturbed rock zone in radioactive waste repository safety and performance assessment. A topical discussion and international overview}
author = {Winberg, A}
abstractNote = {A discussion was presented of the role and relative importance of the disturbed rock zone (DRZ) around the underground openings of a repository for nuclear waste in crystalline rock. The term disturbed rock zone was defined and possible criteria to be sued to distinguish if from undisturbed rock was suggested. The processes decisive for the hydraulic characteristics of the DRZ were discussed. With regard to the integral hydraulic characteristics of the DRZ, the effects of the excavation methodology, stress redistribution, thermal changes, chemical changes and backfill were discussed. A review of in-situ observations of the DRZ was provided. Model analysis where the DRZ has been explicitly or implicitly represented, either from a phenomenological and performance assessment aspect were reviewed. The implications of the disturbed rock zone for the safe performance of a nuclear waste repository were discussed. Conceptual models for the geometry of the DRZ and hydraulic conductivity distribution in the DRZ were suggested. (au) (82 refs.).}
place = {Sweden}
year = {1991}
month = {Jun}
}