Extension of underground in Sophia, Bulgary
Client: Town magistrate Sophia, Bulgary
Contractor: Taisei Corporation, branch Bulgary
Executed works:
- underground subway foundation underpinning
- tunnel boxes concreting
- excavated pit for tunnel tubes
- bored section for tunnel tubes
Construction technology: excavation without blasting agents, excavation in open cut
Construction period: September 2008 – March 2009