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BRO conducts final break through blast of Nechiphu tunnel in Arunachal

Official sources said, Director General of BRO Lt Gen Rajeev Chaudhry conducted it remotely from New Delhi. The foundation stone of the project was laid by Defence Minister Rajnath Singh on October 12, 2020.

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Itanagar: The Border Roads Organisation (BRO) on Friday conducted the final “break through blast” to mark the ‘successful’ completion of excavation work of the Nechiphu Tunnel in West kameng district of Arunachal Pradesh. 

Official sources said, Director General of BRO Lt Gen Rajeev Chaudhry conducted it remotely from New Delhi. The foundation stone of the project was laid by Defence Minister Rajnath Singh on October 12, 2020.

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Perched at an altitude of 5,700 feet, the Nechiphu Tunnel is a unique 500-metre-long D-shaped single tube double-lane tunnel on the Balipara-Charduar-Tawang (BCT) Road in West Kameng district. The tunnel will accommodate two-way traffic and will be equipped with modern lighting and safety facilities.

The tunnel has been conceived to bypass extreme foggy conditions prevailing around Nechiphu Pass which have caused hindrance to general traffic and military convoys since many decades. The tunnel will be provided with a state-of-the-art electro-mechanical system including firefighting devices, auto illumination system and Supervisory Control and Data Acquisition (SCADA) controlled monitoring systems.

It will also accommodate raised footpaths on both sides for a safer pedestrian movement which will have ducts for power cables, optical fibre cables and utility lines to strengthen the civic amenities infrastructure.

In tandem with the Nechiphu Tunnel project, the Project Vartak of BRO has also completed the excavation work on another strategic tunnel, the Twin Tube (1,555 meter and 980 meter) Sela Tunnel Project on the same road, on January 22 last. Today’s blast thus marks the cumulative excavation of more than 4,500 meters, achieved by BRO Karmyogis in less than two years.  

Once in service, the Nechiphu Tunnel along with the Sela Tunnel will provide safe, all-weather strategic connectivity on the BCT road while reducing the carbon footprint in this eco-sensitive area. The ongoing tunnel construction is being accomplished by cutting through fragile and highly fractured rock strata.

The attendant challenges are being tackled on a daily basis through strict 3D monitoring and through proactive application of desired tunnel support systems in accordance with the New Austrian Tunneling Method (NATM).

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