Mechanical responses and fracture mechanism of rock with different free surfaces under the chisel pick cutting

With the increasing demand of the shipping infrastructure projects such as ports and waterways, it is urgent to improve the rock cutting ability and applicable range of trailing suction hopper dredgers. A rock breaking method using free surfaces to assist the draghead is proposed. Verified by experimental results, a series of numerical investigations were carried out to analyze the rock fracturing and cutting process. The rock cutting model by...