Recently, I learned from the road and bridge network that the second submarine tunnel project in Jiaozhou Bay, the world's largest construction scale, has won the bid. The project is divided into 6 bidding sections. The five units of China Railway and China Communications Tunnel Engineering Bureau Co., Ltd. won the bid. The investment is about 15.7 billion yuan.

Project Overview

TJ-01 and TJ-02 of Jiaozhou Bay Second Subsea Tunnel Project include the S line and N line of the main line, which are constructed by open-cut method and drill-and-blast method. Ramp C and D-ramp are constructed by open-cut method and drill-and-blast method. Within the mileage, the horizontal passage, the attached cavern, the south and north underground fan rooms, the pipeline relocation of Huaihe East Road and Penghu Island Street, and the Huangdao connecting the line foundation.

Jiaozhou Bay Second Subsea Tunnel Project TJ-03 and TJ-04 tenders include the main line S line and N line using drill-and-blast method, the service tunnel is constructed by drill-and-blast method, horizontal passages, and auxiliary caverns.

The TJ-05 and TJ-06 tender sections of Jiaozhou Bay Second Subsea Tunnel Project include the main line S line and N line construction by shield method and part of drill and blast method. The service tunnel is constructed by shield method and part of drill and blast method, and the main line is dismantled The cavern is constructed by the drilling and blasting method, the horizontal passage, the main structure of the shield starting section, the enclosure and main structure of the Qingdao open cut section, and the Qingdao port is connected to the line foundation.

TJ-01 lot: including main line S line: SK4+800～SK7+578, D ramp: DK0+290～DK0+757.582 open cut + drill and blast, cross channel: 1# middle section of pedestrian crossing + south section, 2# ~6# pedestrian crossing, 2#~6# vehicle crossing, auxiliary caverns: 4-1# substation cave, 4-2# substation cave, 2# communication cave, south underground fan room , Huangdao connection line foundation; Penghu Island Street pipeline relocation and other civil works within the scope of drawings

TJ-02 tender section: including main line cut and cut section: SK4+300～SK4+800, main line N line: NK4+801.017～NK7+740 drill and blast method, C ramp: CK0+167.716～CK0+620 cut cut+drill and blast method , Cross passage: civil works within the scope of drawings such as the northern section of the 1# pedestrian cross passage, the underground fan room on the north side, and the relocation of Huaihe East Road pipelines

Section TJ-03: Including main line S line: SK7+578～SK14+672.5, cross passage: 7#～9# pedestrian crossing, 10#～23# south section of pedestrian crossing, 7# vehicle crossing passage, 8 #～17# The southern section of the cross passage for vehicles and the attached cavern: civil works within the drawing scope of the southern section of the 9-1# substation cavern

TJ-04 lot: including main line N line: NK7+740～NK14+658, service tunnel: FWK8+795～FWK13+967, cross passage: 10#～23# pedestrian crossing north section, 8#～17# vehicle The northern section of the horizontal passage and the attached cavern: civil works within the scope of the drawings, such as the northern section of the 9-1# substation cavern

TJ-05 lot: including main line dismantling chamber: SK14+707～SK14+742; NK14+658～NK14+693 (drilling and blasting), main line S line: SK14+672.5 SK14+707, SK14+742 SK17+995 , Service tunnel: FWK13+967~FWK17+971.602 drilling and blasting + shield, main structure of the starting section: SK17+995~SK18+207 open-cut section N and S lines are jointly constructed, cross channel: 18#~19# car dealership For civil works within the scope of drawings such as the southern section of the horizontal passage, the project cost is 2.139 billion yuan

TJ-06 tender section: including main line N line: NK14+693~NK17+951.032 shield, Qingdao open cut section enclosure + main structure: SK18+207~SK18+650 Qingdao side N, S, S1, S3, N3 combined Construction and horizontal passages: civil works within the scope of drawings such as the northern section of the 18#~19# vehicle cross passage, and the Qingdao Port connection line base, etc., the project cost is 1.749 billion yuan.

Bidding Information

The first candidate for the TJ-01 bid is China Railway Third Bureau Group Co., Ltd., the first candidate for the TJ-02 bid is China Railway Fourth Bureau Group Co., Ltd., and the first candidate for the TJ-03 bid is China Railway Tunnel Bureau. Group Co., Ltd., the first candidate for the TJ-04 bid, China Railway Second Bureau Group Co., Ltd., the first candidate for the TJ-05 bid, China Railway 14th Bureau Group Co., Ltd., and the first candidate for the TJ-06 bid A CCCC Tunnel Engineering Bureau Co., Ltd. Editor/Zhao E