On November 1, the Guangxi Public Resources Trading Center issued the "Bidding Announcement for Construction General Price Contracting of the Post-Station Four-Electric Engineering for the Newly Built Nanning-Shenzhen Railway Yulin-Cenxi (Guangdong-Guangxi Provincial Boundary) Section" and the "Bidding Announcement for Construction General Price Contracting of the Post-Station Building Engineering for the Newly Built Nanning-Shenzhen Railway Yulin-Cenxi (Guangdong-Guangxi Provincial Boundary) Section," marking further progress in the construction of the Yulin-Cenxi (Guangdong-Guangxi Provincial Boundary) Section of the Nanning-Shenzhen Railway.

Post-station four-electric engineering

Website screenshot.

Construction location: Within the scope of Yulin City and Wuzhou City, Guangxi.

Project scale: The Yulin-Cenxi (Guangdong-Guangxi Provincial Boundary) Section of the newly built Nanning-Shenzhen Railway starts from Yulin North Station of the under-construction Nanning-Yulin Section, runs east along the Luozhan Railway to Rongxian County, crosses the Luozhan Railway and National Highway G324 to set up Rongxian South Station, then crosses National Highway G241, passes Cenxi along the south side of the Luozhan Railway, sets up Cenxi East Station, and then reaches the provincial boundary. The newly built main line is 110.309 kilometers long and includes 3 stations, of which Yulin North Station is an under-construction station, and Rongxian South Station and Cenxi East Station are newly built stations.

Main technical standards: Line grade: High-speed railway. Number of main lines: Double track. Design speed: 350 km/h. Maximum gradient: 20‰ in general sections (25‰ in difficult sections). Minimum curve radius: 7000 meters in general sections (5500 meters in difficult sections). Effective length of arrival-departure tracks: 650 meters. Traction type: Electric power. Train operation control mode: Automatic control (CTCS-3 level). Dispatch command mode: Centralized dispatch. Minimum headway: 3 minutes.

Scope and content of bidding:

Bidding scope: DK194+800 to DK307+156 from Yulin North Station (exclusive) to the provincial boundary section, with a main line of 110.309 km.

Bidding engineering content

(1) Chapter 4 Tunnels: All specialized works not included in the pre-station engineering bidding, such as tunnel lighting and ventilation.

(2) Chapter 6 Communication, signaling, information and disaster monitoring: All works except related works such as integrated grounding that have been included in the pre-station engineering for synchronous implementation, including non-installed equipment and spare parts for materials not supplied by the Employer.

(3) Chapter 7 Electric power and electric traction power supply: Electric power works include the incoming line end of the substation within the station building and the substation equipment, and the four-electric engineering such as the power terminal cables from the outgoing line end of the substation within the station building to the signal integrated building outside the station building, police station and other four-electric buildings; all electric traction power supply works; including non-installed equipment, spare parts for materials not supplied by the Employer, optical fiber differential protection devices for traction substations, and the dispatch information direct acquisition and direct transmission system.

(4) Chapter 8 Buildings: All supporting works (including outdoor works) within the scope of the production and living buildings in the station area and their corresponding enclosing walls, all supporting works (including outdoor works) within the scope of the 10kV power distribution station in the integrated work area and its corresponding enclosing walls, all supporting works (including outdoor works) within the scope of the section guard booths, police areas and their corresponding enclosing walls, and the "four-electric" buildings such as section traction substations and all supporting works (including outdoor works) within their corresponding enclosing walls, including non-installed equipment.

(5) Chapter 9 Other operational production equipment and buildings: Outdoor water supply and drainage and fire protection works for section traction substations, police areas, and tunnels with a length of ≥5 km, station area landscaping, equipment in integrated work areas, and safety and civil air defense facilities, including non-installed equipment (including public security equipment such as police vehicles) and spare parts for materials not supplied by the Employer.

(6) Chapter 11 Other fees: Including safety production fees, special test fees for traction substation equipment, and power supply interval fees.

Planned construction period: 24 months in total, of which:

(1) Yulin North Station (exclusive) to Cenxi East Station DK194+800 to DK279+770, construction period of 18 months, totaling about 540 calendar days;

(2) Cenxi East Station (exclusive) to Guangdong-Guangxi provincial boundary DK279+770 to DK307+156, construction period of 24 months, totaling about 720 calendar days.

Post-station building engineering

Website screenshot.

Construction location: Within the scope of Yulin City and Wuzhou City, Guangxi.

Project scale: The Yulin-Cenxi (Guangdong-Guangxi Provincial Boundary) Section of the newly built Nanning-Shenzhen Railway starts from Yulin North Station of the under-construction Nanning-Yulin Section, runs east along the Luozhan Railway to Rongxian County, crosses the Luozhan Railway and National Highway G324 to set up Rongxian South Station, then crosses National Highway G241, passes Cenxi along the south side of the Luozhan Railway, sets up Cenxi East Station, and then reaches the provincial boundary. The newly built main line is 110.309 kilometers long and includes 3 stations, of which Yulin North Station is an under-construction station, and Rongxian South Station and Cenxi East Station are newly built stations.

Main technical standards: Line grade: High-speed railway. Number of main lines: Double track. Design speed: 350 km/h. Maximum gradient: 20‰ in general sections (25‰ in difficult sections). Minimum curve radius: 7000 meters in general sections (5500 meters in difficult sections). Effective length of arrival-departure tracks: 650 meters. Traction type: Electric power. Train operation control mode: Automatic control (CTCS-3 level). Dispatch command mode: Centralized dispatch. Minimum headway: 3 minutes.

Scope and content of bidding:

Bidding scope

Post-station building engineering within the scope of DK194+800 to DK307+156 from Yulin North Station (exclusive) to the provincial boundary section, with a main line of 110.309 km.

Bidding content

1. Chapter 7 Electric power and electric traction power supply: All specialized works not included in the post-station four-electric bidding.

2. Chapter 8 Buildings: All specialized works not included in the four-electric bidding, such as the station building and other buildings within the integrated work area that do not involve four-electric engineering, including the work area integrated building, track garage and side-span tool room, guard room, grease room, as well as their HVAC, water supply and drainage, and fire protection (including electrical fire protection), including non-installed equipment.

3. Chapter 9 Other operational production equipment and buildings: All specialized works not included in the four-electric bidding, such as outdoor water supply and drainage and fire protection in the station area and integrated work area, passenger platform surfaces, passages, canopies, and railway supporting parking lots. Including non-installed equipment.

4. Chapter 11 Other fees: Safety production fees and safe and civilized construction fees for station building engineering.

Planned construction period: 18 months, totaling about 540 calendar days.