The Micro Tunnelling Project at Pipavav, Gujarat, a critical marine infrastructure initiative executed with precision to overcome extreme hydrostatic pressure and ensure uninterrupted progress under challenging coastal conditions.
PROJECT NAME: MICRO TUNNELLING PROJECT
PROJECT LOCATION: PIPAVAV, GUJARAT
CLIENT: COMECO
During the construction of a micro tunnel by Micro Boring Machine at approx. 60M from the sea line. The tunnel was being excavated through overburden having stiff soil comprising a sandy silt matrix.
The presence of water-saturated media causes a difficult situation to excavate the tunnel due to an additional increase in the hydrostatic pressure.
The crack appeared on the wall, allowing seawater to permeate inside the micro tunnel and eventually leading to a huge water inrush of 200-350 L/m.
The client has applied multiple approach to seal the crack of the micro tunnel but failed every time due to immense pressure of the ground water.
Continuous water inflow halts the work activity and delays the project.
Grouting execution to be done under heavy water inflow.
Specialised techniques such as precision grouting, controlled dewatering, and advanced sealing solutions were integrated to counteract extreme hydrostatic pressure and continuous seawater ingress. This strategic approach not only ensured structural stability but also maintained operational continuity, delivering a resilient solution under highly challenging marine conditions.
Tunneling Support
Water is the number one enemy of infrastructure. Our water ingress control solutions are not temporary patches; they are permanent engineering fixes. We diagnose the source of water intrusion with surgical precision, then deploy custom-formulated grouts and resins to create a final, impenetrable barrier. This is about more than just stopping a leak, it’s about ensuring the long-term integrity, safety, and longevity of your structure.
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