M00001661
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ISO 22282-3 1st Edition, June 1, 2012 Geotechnical investigation and testing - Geohydraulic testing - Part 3: Water pressure tests in rock
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 22282 specifies the requirements for water
pressures tests (WPT) carried out in boreholes drilled into rock as
part of geotechnical investigation and testing according to EN
1997-1 and EN 1997-2.
The tests are used to investigate the following:
— hydraulic properties of the rock mass, which are mainly
governed by discontinuities;
— absorption capacity of the rock mass;
— tightness of the rock mass;
— effectiveness of grouting;
— geomechanical behaviour, e.g. hydrofracturing,
hydrojacking.
Many effects of the geohydraulic tests are not only influenced
by the ground itself, but stem from the testing procedure.
Historically, the water pressure test was evaluated based on the
assumption that the stationary behaviour was achieved. Recent
advances in geohydraulics have shown that transient phenomena are
often present. This part of ISO 22282 attempts to address the
limitations of certain testing procedures without restricting the
required equipment too stringently.