Blasting

 

Blasting
Part of the construction of the new port consists of blasting out rock on the islands.
Blasting is carried out for two reasons:

  • The mountaintops on Qeqertat and Fyrø must blasted away in order to acquire a flat area for the terminal.
  • A large part of the area for the intended quay lies out in the water and must be filled in.

320,000 m3 of rubble from the blasting is needed to fill in the quay area. The rock blasted on Qeqertat and Fyrø will be used for this. It will require 200 tons of explosives.               Tegning 2050 2

The beacons on Fyrø are located close to the blasting area. In order to protect them, they will be removed in cooperation with the Danish Marine Authority before the blasting gets too close. 

Once the blasting work on Fyrø is finished, the beacons will be relocated to their present position. 

Underwater blasting
In addition to blasting on Qeqertat and Fyrø, about 21,000 m3 of rock will be blasted out under the water.

Along part of the quay, the rock is higher than the 13 metre depth required for the finished port. In these areas, the rock will be blasted out to facilitate construction of the port. 

                          Tegning 2051 2

 

In areas with solid rock it will also be necessary to blast a channel for the sheet piling, because the sheet piling cannot be driven into intact rock. 

 

                            Tegning 2201 0