Procedure for evaluating jet grouting columns

摘要

Method for evaluating a jet grouting column that has been introduced into a subsurface using a jet grouting method, with the following steps: (a) Introducing a first jet grouting column (S1) with a nozzle jet linkage (1) into a subsurface, Detection of vibrations at a device (20, 21) connected to a suspension-filled drilling channel (S'1) of the jet column (S1), (c) introduction of a second jet column (S2) adjacent to the first jet column (S1), with a measurement recording device ( 10) a change in the measurement result of the sensor is determined when the second jet grouting column (S2) is introduced.