... pipe omco environmental guideline mining system deflection ocean mining system upstream oil & gas mining system development metals & mining operation Third-Generation Commercial Mining System Development for Manganese Nodules: Direct-to- vs. Incremental-to-5,000-m Approach Jin S...

... ABSTRACT: The ocean mining pipe connects the sea floor to the mining ship and remains suspended in hostile sea environment carrying nodule slurry. This pipe shows nonlinear behavior due to large deflection under hydrodynamic forces, due to waves, current, ship velocity, and ship-induced...

... maneuvering on the seafloor. 2-D deflection and 3-D motions of a 5486-m-long (18,000-ft) articulated pipe system and buffer can be controlled with elastic joints, axial dampers and the buffer at the bottom end of the pipe, and further with thrusters installed along the pipe, controlling the lateral deflection...

... as the bending, stresses. The axial dampers slightly decrease the pipe deflection, while the elastic joints increase it slightly. The ship motion excites the horizontal (x-) and vertical (z-) motions concurrently of the pipe in its initial static equilibrium configuration, which is deflected by the ocean current...