Tunnel boring machine equipped with high-pressure water jet cutting system and combined tunneling method

A tunnel boring machine (TBM) equipped with a high-pressure water jet cutting system, comprising:

• a TBM body, wherein:
• a flow pump unit is arranged on the TBM body, and
• a high-pressure water jet cutting system is arranged at a front end of the TBM body;
• wherein:
• the high-pressure water jet cutting system comprises:
• a water jet-mechanical combined cutter head,
• a high-pressure water conveying pipeline,
• a multi-medium rotary center, and
• a water jet diversion valve block;
• wherein, a first end of the high-pressure water conveying pipeline is connected to the flow pump unit, and a second end of the high-pressure water conveying pipeline is connected to the multi-medium rotary center, the multi-medium rotary center is connected to the water jet diversion valve block, and a high-pressure water conveyed from the high-pressure water conveying pipeline is divided into multiple paths by the water jet diversion valve block;
• the water jet-mechanical combined cutter head comprises:
• a cutter head body,
• a plurality of center cutters, being arranged on a concentric circle centered on the cutter head body and close to a center of the cutter head body;
• a plurality of edge cutters, being arranged at an edge of the cutter head body;
• and
• a plurality of water jet-shell knife combined cutters, wherein:
• a first group of the plurality of the water jet-shell knife combined cutters is positioned on the concentric circle where the center cutters are arranged, and a cutting trajectory of the water jet-shell knife combined cutters of the first group is the same as that of the center cutters;
• and
• a second group of the plurality of the water jet-shell knife combined cutters is arranged close to an edge position of the cutter head body and is positioned at different positions from each of the edge cutters, and a cutting trajectory of the water jet-shell knife combined cutters of the second group is different from that of the each of the edge cutters;
• the multi-medium rotary center comprises a low-pressure medium rotary center;
• a water jet rotary joint is arranged coaxially with the low-pressure medium rotary center;
• wherein:
• the water jet rotary joint comprises a fixed portion of the water jet rotary joint and a rotating portion of the water jet rotary joint;
• wherein the high-pressure water conveying pipeline is directly connected to the fixed portion of the water jet rotary joint, and the rotating portion of the water jet rotary joint is connected to the water jet diversion valve block;
• and
• each of the multiple paths of the high-pressure water is supplied to the each of the water jet-shell knife combined cutters.