Determination of the porosity, permeability and diffusivity of rock in the excavation-disturbed zone around full-scale deposition holes using the 14C-PMMA and He-gas methods

被引：22

作者：

Autio, J

Siitari-Kauppi, M

Timonen, J

Hartikainen, K

Hartikainen, J

机构：

[1] Saanio & Riekkola Consulting Engineers, FIN-00420 Helsinki, Finland

[2] Univ Helsinki, Lab Radiochem, Helsinki, Finland

[3] Univ Jyvaskyla, Dept Phys, Jyvaskyla, Finland

来源：

JOURNAL OF CONTAMINANT HYDROLOGY | 1998年 / 35卷 / 1-3期

关键词：

excavation disturbance; porosity; permeability; diffusivity; C-14-PMMA method; He-gas method;

D O I：

10.1016/S0169-7722(98)00112-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Three experimental holes the size of deposition holes in a KBS-3 type repository (depth 7.5 m and diameter 1.5 m) were bored in hard granitic rock in the Research Tunnel at Olkiluoto to study, among other things, the properties of the rock in the excavation-disturbed zone. In the analysis described in this report, the porosities, effective diffusivities and permeabilities of disturbed and intact rock were determined by using two novel methods: the C-14-polymethylmethacrylate method and the He-gas method. In addition, the structure of the rock in the excavation-disturbed zone was assessed using both scanning electron and optical microscopy. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：19 / 29

页数：11