Tunneling

Go Data Line has extensive experience in the planning, design, and supervision of tunnel excavation and support. Data Line, as a member of the consortium, recently successfully completed the construction supervision of an approximately 69 km long underground tunnel system for the Neelum Jhelum Hydropower Project (NJHEP). The project is an engineering marvel due to its unique features including the Headrace Double Tunnel Crossing under the Jhelum River called Jhelum River Crossing (JRC). The Headrace & Tailrace Tunnel System diverts water from the Neelum River to the Lower Jhelum River Member through a 32.1 km long single and double tunnel comprising of a drill and blast (D&B) excavation and the use of a tunnel boring machine (TBM).

Data Line consultancy services for various aspects of tunneling work, including:

• Feasibility studies
• Construction methods and selection of equipment for the excavation of tunnels
• Tunnel Cost Estimate
• Construction planning and technical design
• Segmented revetment and rock support design
• Finalization of the drilling diagram for sealing
• Tender documents and technical specifications
• Design and supervision of tunnel support system through anchor bolts, grout, shotcrete, concrete and steel lining, etc.
• Design and installation of instrumentation and monitoring systems for underground works
• construction supervision
• Contract management and administration

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