Construction of the No.3 tunnel of the Jakarta-Bandung High-Speed Railway in Indonesia was completed on April 26, laying a solid foundation for future engineering on the rail.
Contracted by Sinohydro Bureau 7 Co., Ltd, a subsidiary of Power Construction Corporation of China (POWERCHINA), the 735-meter double-lane tunnel was dug from both ends at the same time.
While the shallowest depth of the tunnel was only 5.8 meters, the tunnel was dug through hard strata consisting of strong stones, expansive soil and huge rocks.
Construction of the tunnel started on April 13, 2019. In addition to the strata difficulties, subsidence and deformation caused by the tropical rainy climate were solved in the past year, providing valuable experience for similar engineering.
Local people were also encouraged to participate in the project. The company offered training courses and 75 Indonesian workers have acquired tunnel construction skills.
Located in western parts of the Java Islands, the Jakarta-Bandung High-Speed Railway links Jakarta, capital of the country, and Bandung, capital of West Java province.
The 142.3-kilometer railway has a designed speed of 350 kilometers per hour and will shorten travel time between the two cities to 40 minutes when it opens to traffic.
Builders pose upon completion of the No.3 tunnel of the Jakarta-Bandung High-Speed Railway on April 26. [Photo/sasac.gov.cn]
(Executive editor: Zhang Tianyuan)