Marmaray tunnel project in Istanbul will be first railway connection between Europe and Asia . The new tunnel will ease commuter traffic on Istanbul 's waterfront and strait . so we have seismic joints in the tunnels , especially between the immersed tube tunnel and the bore tunnel , '' says deputy project manager , Mehmet Cilingir . Tunnel construction has been delayed by discovery of ancient ruins . Seismic is also a problem for contractors who have fitted ` ` flexible joints '' in the tunnel .
Marmaray tunnel project in Istanbul will be first railway connection between Europe and Asia . The new tunnel will ease commuter traffic on Istanbul 's waterfront and strait . Tunnel construction has been delayed by discovery of ancient ruins . Seismic is also a problem for contractors who have fitted ` ` flexible joints '' in the tunnel .