FRACTURE SAMPLING ON A CYLINDER - FROM SCANLINES TO BOREHOLES AND TUNNELS

Citation
M. Mauldon et Jg. Mauldon, FRACTURE SAMPLING ON A CYLINDER - FROM SCANLINES TO BOREHOLES AND TUNNELS, Rock mechanics and rock engineering, 30(3), 1997, pp. 129-144
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geosciences, Interdisciplinary","Engineering, Civil
ISSN journal
0723-2632
Volume
30
Issue
3
Year of publication
1997
Pages
129 - 144
Database
ISI
SICI code
0723-2632(1997)30:3<129:FSOAC->2.0.ZU;2-L
Abstract
In this paper we develop correction factors for orientation bias when sampling rock fractures with a borehole. For a borehole with zero radi us we obtain Terzaghi's result for scanline sampling; otherwise the ap propriate correction factor may differ significantly from that obtaine d for the scanline model, depending on the relative size of the boreho le and the rock fracture. Two separate cases are discussed: the sampli ng of fractures with a borehole and sampling: with the surface of a bo rehole. Analytical expressions for the correction factors are graphed and tabulated.