Drammen-Kobbervikdalen high-speed line project: Trevi Spa carried out pre-drilling with a DTH hammer.


Given the type of soil to be treated and the geometry of the work related to the Drammen-Kobbervikdalen high-speed line project, in order to provide the highest quality standard and control of deviations, for #TreviSpa it was necessary to carry out pre-drilling with a DTH hammer.

The monitoring of the deviations with an inclinometer instrument was carried out on 100% of the JG columns to ensure that the whole soil is treated.

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