The immediate displacement of the subsoil, and therefore the need for extra volumes of rock, can be accurately determined as long as sufficient geotechnical information on the seabed is available. Van Oord dredging and marine contractors has extensive experience in installing subsea rock by using flexible fallpipe techniques.
NorFra Pipeline Installation Project: Pretrenching, Seabed Levelling, and Landfall Dredging and Civil Works
A 42" diameter, 835 km-long, high pressure natural gas pipeline was laid from Norway to France in record time and under budget.
A new technique combines two essential but difficult tasks in underwater construction - accurately depositing and then levelling bulk materials.