ISO 22282-1:2012 establishes the general rules and principles for geohydraulic testing in soil and rock as part of the geotechnical investigation services in accordance with EN 1997-1 and EN 1997-2. ISO 22282-1:2012 defines concepts and specifies requirements relating to permeability measurement in soil and rock. The different purposes of geohydraulic testing are to obtain information on the permeability of soil or rock in natural or treated states, transmissivity and storage coefficient, and hydrodynamic parameters of aquifers. Geohydraulic testing is used for many purposes, such as:
absorption capacity and effectiveness of grouting in rock mass; assessment of seepage and drainage; assessment of groundwater lowering work; effects of cut-offs for dams; effects of tunnels and shaft sinking; checking fill or cover tightness; assessment of the flow of fluids and suspensions in the ground; planning for remedial measures.
ISO 22282-1:2012 deals with the execution of tests with groundwater and does not explicitly consider other fluids and suspensions. The flow of other fluids and suspensions can be considered by applying the different viscosities and relations between transmissivity, permeability coefficient and intrinsic permeability.
Tämän julkaisun valmistelusta Suomessa vastaa Väylä, puh. 0295 343000 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Equipment
4.1 General
4.2 Test section support system
4.3 Measuring tube
4.4 Isolation of the test section
4.5 Measuring and recording devices
4.6 Additional equipment
4.7 Calibration
5 Planning of geohydraulic investigation and testing
5.1 General
5.2 Selection of testing locations
5.3 Selection of test procedure
6 Preparation of the test section and installation of equipment
6.1 Requirements for drilling and the test sections
6.2 Installation of filter
6.3 Checking installation
6.4 Safety requirements
6.5 Decommissioning
6.6 Factors influencing the test results
Annex A Examples of possible test section isolation and support methods (informative)
EN 1990:2002 Eurocode - Basis of structural design
EN 1990:2023 Eurocode - Basis of structural and geotechnical design
EN 1997-1:2004 Eurocode 7: Geotechnical design - Part 1: General rules
EN 1990:2002 Eurocode - Basis of structural design
EN 1990:2023 Eurocode - Basis of structural and geotechnical design
EN 1997-1:2004 Eurocode 7: Geotechnical design - Part 1: General rules
EN 1997-2:2007 Eurocode 7 - Geotechnical design - Part 2: Ground investigation and testing
ISO 14688-1:2002 Geotechnical investigation and testing -- Identification and classification of soil -- Part 1: Identification and description
ISO 14689-1:2003 Geotechnical investigation and testing -- Identification and classification of rock -- Part 1: Identification and description
ISO 22282-2:2012 Geotechnical investigation and testing -- Geohydraulic testing -- Part 2: Water permeability tests in a borehole using open systems
ISO 22282-3:2012 Geotechnical investigation and testing -- Geohydraulic testing -- Part 3: Water pressure tests in rock
ISO 22282-4:2012 Geotechnical investigation and testing -- Geohydraulic testing -- Part 4: Pumping tests
ISO 22282-5:2012 Geotechnical investigation and testing -- Geohydraulic testing -- Part 5: Infiltrometer tests
ISO 22475-1:2006 Geotechnical investigation and testing -- Sampling methods and groundwater measurements -- Part 1: Technical principles for execution