Water Leaking In Pipe Jacking Process

Tunnel is being bored through underground whilst providing continuous ground support and minimising potential ground movement.  Especially when ground water is lost through leaking into the launch shaft due to failure in initial ground improvement works and sometimes mechanical faults in entry ring seals or TBM cutterheads.

Timely intervention by chemical grouting is critical to seal and stop groundwater and minimising ground movement is crucial to prevent any potential settlement at the ground that may result in disastrous accidents.