Combined geophysical and hydraulic methods for 3D mapping of fractures and siting rock caverns in granite

Veijo Pirhonen

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

In order to determine the most suitable location for a set of rock caverns, the fracturing of a rapakivi granite block is studied in three dimensions. Five vertical, 200 m deep boreholes (ø = 66mm) were drilled for this purpose.

The selection of the geophysical measurements utilized for the fracture classification was based on the results of the previous geophysical investigations in the test holes.

The connections between the boreholes are evaluated from dipmeter data, crossholeseismic data and from charged potential cross-correlation data. The hydraulic conductivities of fracture zones and rock-blocks between them and the fracture apertures are calculated from water-injection test data.

Original languageEnglish
Pages (from-to)45-68
JournalEngineering Geology
Volume25
Issue number1
DOIs
Publication statusPublished - 1988
MoE publication typeA1 Journal article-refereed

Fingerprint

Granite
cavern
granite
Rocks
Hydraulics
Boreholes
hydraulics
rock
borehole
Water injection
Hydraulic conductivity
rapakivi
fracture aperture
rock block
fracture zone
hydraulic conductivity
method
water
test

Cite this

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abstract = "In order to determine the most suitable location for a set of rock caverns, the fracturing of a rapakivi granite block is studied in three dimensions. Five vertical, 200 m deep boreholes ({\o} = 66mm) were drilled for this purpose.The selection of the geophysical measurements utilized for the fracture classification was based on the results of the previous geophysical investigations in the test holes.The connections between the boreholes are evaluated from dipmeter data, crossholeseismic data and from charged potential cross-correlation data. The hydraulic conductivities of fracture zones and rock-blocks between them and the fracture apertures are calculated from water-injection test data.",
author = "Veijo Pirhonen",
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Combined geophysical and hydraulic methods for 3D mapping of fractures and siting rock caverns in granite. / Pirhonen, Veijo.

In: Engineering Geology, Vol. 25, No. 1, 1988, p. 45-68.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Combined geophysical and hydraulic methods for 3D mapping of fractures and siting rock caverns in granite

AU - Pirhonen, Veijo

PY - 1988

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N2 - In order to determine the most suitable location for a set of rock caverns, the fracturing of a rapakivi granite block is studied in three dimensions. Five vertical, 200 m deep boreholes (ø = 66mm) were drilled for this purpose.The selection of the geophysical measurements utilized for the fracture classification was based on the results of the previous geophysical investigations in the test holes.The connections between the boreholes are evaluated from dipmeter data, crossholeseismic data and from charged potential cross-correlation data. The hydraulic conductivities of fracture zones and rock-blocks between them and the fracture apertures are calculated from water-injection test data.

AB - In order to determine the most suitable location for a set of rock caverns, the fracturing of a rapakivi granite block is studied in three dimensions. Five vertical, 200 m deep boreholes (ø = 66mm) were drilled for this purpose.The selection of the geophysical measurements utilized for the fracture classification was based on the results of the previous geophysical investigations in the test holes.The connections between the boreholes are evaluated from dipmeter data, crossholeseismic data and from charged potential cross-correlation data. The hydraulic conductivities of fracture zones and rock-blocks between them and the fracture apertures are calculated from water-injection test data.

U2 - 10.1016/0013-7952(88)90018-X

DO - 10.1016/0013-7952(88)90018-X

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SP - 45

EP - 68

JO - Engineering Geology

JF - Engineering Geology

SN - 0013-7952

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