Calculation of Cutting Forces for Cutter Head on Large Cutter Suction Dredger

By considering common characteristics of rock dredging and coal cutting,and discussing practical situation of cutting by cutter head,the mathematical model of rock cutting underwater for cutter head is proposed based on the theories of cutting forces in coal mining.Then,a detailed discuss on the parameters in the model is theoretically investigated.Furthermore,by using this model,the cutting forces and power of cutter head on a large Cutter Suction Dredger are calculated by programming,and the changes of power and forces when dredging rocks with different unconfined compressive strength under varied swing velocity are analyzed.