BRO conducts final breakthrough blast of Nechiphu Tunnel in Arunachal Pradesh
New Delhi, May 20, 2022
The Border Roads Organisation (BRO) conducted the final “breakthrough blast” to mark the successful completion of excavation work of the Nechiphu Tunnel in Arunachal Pradesh on Thursday.
BRO Director General Lt Gen Rajeev Chaudhry conducted the blast remotely from New Delhi, a press release from the Ministry of Defence said.
The foundation stone of the project was laid by Defence Minister Rajnath Singh on October 12, 2020.
The Nechiphu Tunnel, at an altitude of 5,700 feet, is a 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 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 had 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. Today’s blast, thus, marks the cumulative excavation of more than 4,500 meters, achieved by BRO workers 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 daily basis through strict 3D monitoring and through proactive application of desired tunnel support systems in accordance with the New Austrian Tunneling Method (NATM).
The BRO has taken up tunnelling in a big way in recent times with the successful completion of high-altitude and mountainous tunnels, in addition to the Atal Tunnel, Rohtang in Himachal Pradesh and the Chamba Tunnel in Uttarakhand.
The organisation has also embarked on the construction of a series of small tunnels, the release added.