Geotechnical investigation and testing. Geohydraulic testing - General rules

BS EN ISO 22282-1:2012 Geotechnical investigation and testing. Geohydraulic testing. General rules

BS EN 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. It 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:

a) absorption capacity and effectiveness of grouting in rock mass

b) assessment of seepage and drainage

c) assessment of groundwater lowering work

d) effects of cut-offs for dams

e) effects of tunnels and shaft sinking

f) checking fill or cover tightness

g) assessment of the flow of fluids and suspensions in the ground

h) planning for remedial measures.

BS EN ISO 22282 consists of the following parts, under the general title Geotechnical investigation and testing — Geohydraulic testing:

Part 1: General rules

Part 2: Water permeability tests in a borehole using open systems

Part 3: Water pressure tests in rock

Part 4: Pumping tests

Part 5: Infiltrometer tests

Part 6: Water permeability tests in a borehole using closed systems