berita

Bekasi - Tunnel technology innovation continues to be developed as an effort to realize the importance of tunnels, especially in road construction in Indonesia, which has various topography ranging from lowlands, hills to mountains.

The application of tunnel technology innovation is carried out in the construction of twin tunnels on the Cileunyi - Sumedang - Dawuan (Cisumdawu) Toll Road, namely using the New Austrian Tunneling Method (NATM) technology innovation. This technology has been successfully applied to the Cisumdawu Toll Road tunnel which is useful in strengthening the soil before excavation.

New Austrian Tunneling Method (NATM) technology is a modern method of tunnel design and construction employing advanced monitoring to optimize various wall reinforcement techniques based on rock types in mountainous areas encountered during tunneling.

NATM technology integrates the principles of rock mass behavior under load and monitors underground construction performance during construction, and is used for excavation of soft soils and tunneling in porous sediments. This technology also allows direct adjustments as well as underground excavation in construction details.

For information, the Cisumdawu Toll Tunnel is the longest toll road tunnel in Indonesia, and is the first toll road to have a tunnel. The twin tunnels on the Cisumdawu Toll Road have a length of 472 meters and a width of 14 meters.

The location of the Cisumdawu toll tunnel is in the village of Rancakalong, Sumedang Regency, West Java Province, Section II of the Rancakalong - Sumedang section. The toll road, which consists of 6 sections, is expected to be completely completed by the end of 2021.

The presence of the Cisumdawu Toll Road will be connected to the Kertajati Airport Access Toll Road so that it will reduce the travel time from Bandung from about 3 hours to only 1 hour. (BPJT/Dms)