Focus on environmental aspects

Representatives of the regional council visit FAIR construction site

Michael Moser explained to the visitors the challenges which the sandy substructure entails for the setting of the drilled piles. (Photo: Gaby Otto for FAIR)

Another group of visitors took a shortcut, crossing the construction site so as to reach the GSI pond by a direct route. (Photo: Gaby Otto for FAIR)

Last Thursday 17 representatives of Darmstadt regional council visited the construction site. They gathered information on the pile-drilling work and the environmental compensation measures associated with the construction of the particle accelerator.


During the tour of the construction site the visitors gained an insight into the technology used for the bored pile foundation. The water drainage measures were of particular interest for the group of visitors, which included 14 aspiring senior technical inspectors for environmental matters. The regional council is monitoring all the water drainage stages on the construction site and has imposed corresponding contractual conditions on FAIR.


In the drilling process the drilling rigs penetrate layers close to groundwater. So that groundwater cannot rise to the surface while the work is being conducted, the drilling process uses hydrostatic force. This means that when drilling sufficient water is pumped into the ground from above so that the resulting pressure keeps the groundwater where it is naturally found.


During the pile-driving work samples of groundwater are analyzed at four-weekly intervals by an independent institute. All the analyses conducted since the commencement of the pile-driving work have corresponded with the customary local values.


The majority of the 1,350 drilled piles have been set in place in the meantime. The work will be concluded in the coming weeks.


Information on the environmental compensation for the construction of FAIR:



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