Tunnel 1 High Speed Railway Project Construction
High speed railway tunnel 1 is located in Jakarta City, 2.5km from the high-speed rail Halim station. This project is divided into open-cut section at the entrance and exit. Tunnel 1 enters the underground from the north side of the Jakarta - Cikampek toll road, passes through existing expressways, toll stations, interchanges, mosques, existing residential areas, and exits the ground from the south side of the expressway. It is designed as a single-tunnel double-track with a total length of 1885 m. Topographic features tunnel 1 is alluvial plain area with flat terrain and open terrain. The surface layer along the tunnel covers clay, silty clay and fine gravel are the main types, with partial semi-cementation. There are mainly clay, silty clay, silt, silt, fine sand and fine conglomerate in the cave body. Seeing the topographic, geology condition, and prioritizing safety in the construction process, the construction of tunnel 1 uses Tunnel Boring Machine (TBM). A...