Bank Tunnel Water Proofing

Work Completed

• Drilled tunnel lining and carried out an endoscope survey to ascertain void magnitude
• Drilled tunnel lining and installed injection packers at seepage points
• Injected predetermined amounts of resin to seal the seepage points
• Injection by Pedal Piston pump to eliminate the need for a power supply and allow for simple pressure control

Work was completed ahead of schedule with zero accidents and zero impact on the TFL network

Similar works were carried out at Woolwich Arsenal tunnels with the same result.