24 Jul 2019 11:15am
  • tunel_zavoj 1.jpg
  • tunel_zavoj 2.jpg

Zavoj HPP Tunnel, Serbia

  

Headrace tunnel of Zavoj Hydroelectric Power Plant was built in the vicinity of the town of Pirot. The entrance section was executed using New Austrian Tunneling Method (NATM), whereas the exit section was executed mechanically, using Tunnel Boring Machine (TBM), with simultaneous erection of pre-cast segments.

 

 

Employer

Elektroprivreda Srbije, Belgrade

Headrace tunnel

length

9,093

m

diameter

5.2

m

segment - lining thickness

25

cm

cross-section

24

m2

grout boreholes

100,000

m

grout mix

21,500

t

Surge tank

height

72

m

diameter

17

m