Standard Practice for Direct Push Hydraulic Logging for Profiling Variations of Permeability in Soils

Importancia y uso:

5.1 The injection logging system provides a rapid and efficient way to ascertain the pressure required to inject water into unconsolidated formations at the given flow rate in real time (Fig. 1) (1-4, 7).5 The measured injection pressure and flow rate are then used to assess variations in formation permeability versus depth and infer changes in formation lithology and understand the local hydrostratigraphy (1-4, 8-16). Log interpretation should be confirmed with targeted soil coring adjacent to selected log locations or running logs adjacent to one or more previously logged borings.

Practice D3740 was developed for agencies engaged in the testing and/or inspection of soils and rock. As such, it is not totally applicable to agencies performing this practice. However, users of this practice should recognize that the framework of Practice D3740 is appropriate for evaluating the quality of an agency performing this practice. Currently there is no known qualifying national authority that inspects agencies that perform this practice.

Subcomité:

D18.21

Referida por:

D6286_D6286M-20, D8571-24, D6067_D6067M-17, D6001_D6001M-20, D5092_D5092M-16R24

Volúmen:

04.09

Número ICS:

13.080.40 (Hydrological properties of soils)

Palabras clave:

direct push; electrical conductivity; HPT; hydraulic conductivity; hydraulic profiling tool; injection logging; permeability; pressure dissipation test; soil investigations;