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Aespoe hard rock laboratory. Evaluation and conceptual modelling based on the pre-investigations 1986-1990

Technical Report:

Abstract

The investigations have been grouped to several geometric scales under the disciplines of geology, geohydrology and groundwater chemistry, transport of solutes and mechanical stability. Geological mapping and geophysical measurements have been made both on a regional and on a site scale. On the site scale additional surface measurements, drilling of 35 percussion boreholes and 19 cored boreholes was made. The results of the geological investigations show that the Aespoe bedrock is a complex mixture between Smaaland granite, Aespoe diorite and fine grained granite. Hydraulic and chemical data was collected from existing well records within the Kalmar County. Hydraulic conductivity measurement and interference pumping tests were made in the core drilled holes and to some extent in the percussion holes. The hydraulic conductors are basically the fracture zones, but one of the most important is a NNW striking system of single fractures which is difficult to distinguish geologically. The chemical conditions of the groundwater and the fracture minerals form water bearing sections of the core drilled holes have been examined. Water samples were collected from percussion boreholes. The groundwater can be divided into three categories. Fresh water down to approximately 50 m depth. Mixed fresh and seawater 50-100 m, present and/or  More>>
Authors:
Wikberg, P; [1]  Gustafson, G; Rhen, I; Stanfors, R
  1. ed.
Publication Date:
Jun 01, 1991
Product Type:
Technical Report
Report Number:
SKB-TR-91-22
Reference Number:
SCA: 540250; 052002; PA: AIX-23:010986; SN: 92000637724
Resource Relation:
Other Information: PBD: Jun 1991
Subject:
54 ENVIRONMENTAL SCIENCES; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; RADIOACTIVE WASTE DISPOSAL; SITE SURVEYS; BOREHOLES; CHEMICAL COMPOSITION; EXPERIMENTAL DATA; GEOLOGIC FRACTURES; GEOMORPHOLOGY; GROUND WATER; HYDRAULIC CONDUCTIVITY; HYDROLOGY; SWEDEN; UNDERGROUND DISPOSAL; WELLS; 540250; 052002; SITE RESOURCE AND USE STUDIES; WASTE DISPOSAL AND STORAGE
OSTI ID:
10111339
Research Organizations:
Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE92613491; TRN: SE9100246010986
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
SWDN
Size:
225 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Wikberg, P, Gustafson, G, Rhen, I, and Stanfors, R. Aespoe hard rock laboratory. Evaluation and conceptual modelling based on the pre-investigations 1986-1990. Sweden: N. p., 1991. Web.
Wikberg, P, Gustafson, G, Rhen, I, & Stanfors, R. Aespoe hard rock laboratory. Evaluation and conceptual modelling based on the pre-investigations 1986-1990. Sweden.
Wikberg, P, Gustafson, G, Rhen, I, and Stanfors, R. 1991. "Aespoe hard rock laboratory. Evaluation and conceptual modelling based on the pre-investigations 1986-1990." Sweden.
@misc{etde_10111339,
title = {Aespoe hard rock laboratory. Evaluation and conceptual modelling based on the pre-investigations 1986-1990}
author = {Wikberg, P, Gustafson, G, Rhen, I, and Stanfors, R}
abstractNote = {The investigations have been grouped to several geometric scales under the disciplines of geology, geohydrology and groundwater chemistry, transport of solutes and mechanical stability. Geological mapping and geophysical measurements have been made both on a regional and on a site scale. On the site scale additional surface measurements, drilling of 35 percussion boreholes and 19 cored boreholes was made. The results of the geological investigations show that the Aespoe bedrock is a complex mixture between Smaaland granite, Aespoe diorite and fine grained granite. Hydraulic and chemical data was collected from existing well records within the Kalmar County. Hydraulic conductivity measurement and interference pumping tests were made in the core drilled holes and to some extent in the percussion holes. The hydraulic conductors are basically the fracture zones, but one of the most important is a NNW striking system of single fractures which is difficult to distinguish geologically. The chemical conditions of the groundwater and the fracture minerals form water bearing sections of the core drilled holes have been examined. Water samples were collected from percussion boreholes. The groundwater can be divided into three categories. Fresh water down to approximately 50 m depth. Mixed fresh and seawater 50-100 m, present and/or relict seawater 100-500 m and old (relict) seawater below a depth of 500 m. An important task in the evaluations is to set up `conceptual models`. These models are the basis for calculation of the ambient groundwater situation and the way in which the hydrological regime will change during the excavation of the laboratory. In order to allow for different levels of detail the conceptual models are established on different scales. The geometrical scales chosen are 500 m, 50 m and 5 m. (au).}
place = {Sweden}
year = {1991}
month = {Jun}
}