5th phase of construction of the Baku Underground

Client: JSC "Azertunelmetrotikinti”  1. Construction of the station "Bus terminal", "B-1" stage "Bus terminal"-"M.AJAmi - 2""B-2“

1.1 Construction of the starting chamber tunnel boring complex at the station "Bus terminal" Project description:
Dimensions of the starting chamber: length - 120.00 m, width - 24.0 m, depth - 18.0 m.
For the construction of the starting chamber for tunnel boring complex pit chamber walls strengthening is performed by wall-anchor system consisting of bored piles
D = 800 mm and a length of 17-25 mm
D = 650 mm, length 18-22 mm
The total length of piles:
 
D-800mm-L=22149m/981nos.
D-650mm-L=4468m/214nos.
Anchor length 18m ÷26m
Excavation - 51840 m3
1.2 Construction of transfer tunnel on construction site "Bus terminal-Memar Ajami-2" tunnel length L = 1852 m
Tunnel Diameter D = 6,0 m
Tunneling was performed using tunnel boring complex ROBBINS, d = 6,0
2. Construction of the station "M.AJAmi - 2" and stage "M.AJAMi-2" (B-3)
2.1. Construction of reinforced concrete structures of "Memar Ajami-2» (B-2) station
Project description:
Dimension of stations: Length - 170 m, width - 26.0 m, depth - 36.0 m.
Earthworks: 119913 m3
Piling works: Ø650-52 pcs. / Ø530-75 pcs. / L = 1836 m.
Construction of concrete walls on a "diaphragm wall" method
Dimensions:
Length -170.0 m / P = 392 p.m.
Width -26.0 m
installation niyadepth.H = 46-58 m
The thickness of the walls - 1200-1500 mm
The volume of wall concrete= 31531.0 m3 2.2. Construction of inserted floors at station «В-2»
Earthworks – 68153 m3
Concrete – 15765 m3 
2.3. Construction of transfer tunnel “ Memar Ajami -2”–“B-3” (Papanin)  Tunnel length L=1596 m Tunnel diameter D=6,0 m
2.4.Diaphragm wall 170х30 m
Foundation depth = 40-54 m
P=400 мm
 3.Construction of «В-3» station and «В-3»-«В-4» stage 
3.1 Construction of reinforced concrete walls of «В-3» station by «diaphragm wall» method 
The length of the station - 361 m
Width - 22 m
Depth - 25-31 m
Wall thickness - 1.2 m
P = 766 m
The volume of walls` concrete - 37150 m3
Volume of earthworks - 51860 m3 
3.2 Construction of «В-3» - «В-4» stage
Tunnel length – 600 m (actually constructed)
Diameter D = 6,0 m 
4.Construction of «В-4» station 
4.1 Construction of reinforced concrete walls of «В-4» by «diaphragm wall» method 
The length of the station - 170 m
Width - 30 m
Depth - 38-40 m
Wall thickness - 1.5 m
P = 400 m
The volume of walls` concrete - 25668 m3
Volume of earthworks - 18860 m3