Correlation Research of TBM Tunnel Rock Mechanical Characteristics, Chiseling Specific Energy, and Abrasion Performance: Case Study of Jiaozhou Bay Subsea Tunnel in Qingdao

Figure 2

Regional geological map. 1: buried fault; 2: thrust fault; 3: normal fault; 4: strike-slip fault; 5: main fault number; 6: geological boundary; 7: Quaternary. Fault: ① Cangkou fault, ② Pishikou fault, ③ Wangjiage fault, ④ South Chaolian Island fault. <1>: early-middle Pleistocene buried faults; <2>: pre-Quaternary buried faults; <3>: Quaternary; <4>: Mesozoic; <5>: Proterozoic; <6>: Mesozoic intrusions (medium acid); <7>: the tunnel route. Fault: (1) Cangkou fault, (2) Xin Island fault, (3) Licang District Government-Huiquanjiao fault, (4) South Tuan Island fault, (5) North Xuejia Island fault.