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ONORM EN ISO 22282-4:2021
Geotechnical investigation and testing - Geohydraulic testing - Part 4: Pumping tests (ISO 22282-4:2021)
This document sets out requirements for pumping tests as part of geotechnical exploration according to EN 1997-1 and EN 1997-2. This document applies to pumping tests in aquifers whose permeability is such that pumping out of a well - depending on the conditions of the subsoil and the purpose - can lead to a lowering of the piezometric height within hours or days. The document deals with pumping tests in loose and rock rock. The tests covered by this document are those intended for the evaluation of the hydrodynamic parameters of an aquifer and of well parameters, e.B.g.: - general permeability coefficient of the aquifer; - radius of influence of the pump; - the rate of production for a well; - effect in relation to subsidence in an aquifer during pumping; - skin factor; - well storage coefficient; - Impact in terms of recovery in a grun ...
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Austrian Standards Institute [on]