Sea quay wall
In collaboration with Geonorte, Geotécnia and Fundações Especiais, Lda, H5S has anchored an existing sea quay wall with 57-meter long grout injection anchors. The self-drilling rods with a full-face drill head of Ø250mm, are drilled with the grout bodies up to 17 meters into the granite! In the hollow space of the self-drilling anchor a number of pre-tensioning strands are installed to increase the strength capacity of the anchor. Due to granite formations in the subsurface and the risk of sink holes,the sonic drilling technique was selected for te execution of this project.
Thanks to the sonic drilling technology and our modern equipment, the nuisance on the quay is so limited that it can largely remain in operation.