Construction of Jakarta Bandung High speed Railway
On the 13th, when inspecting the construction site of the Jakarta Bandung high-speed railway in Bandung, West Java, President Joko of Indonesia said that the Jakarta Bandung high-speed railway developed by a joint venture between Indonesia and China Railway has made Indonesia the first ASEAN country with high-speed railway.
The Jakarta Bandung high-speed railway connects Jakarta, the capital of Indonesia, and Bandung, the densely populated capital of West Java. It starts from Halim Station in Jakarta in the west and ends at Dekalur Station in Bandung in the east. There are four stations in total.
The total length of the line is 142km, which will be started in 2016 and is expected to be open to the public from November 2023. It is reported that the maximum design speed of the train is 350 km/h and the running speed is 300 km/h.
Along the Jakarta Bandung High speed Railway, there is a tropical rainforest climate zone, where there are a lot of unfavorable geology and special rock and soil, including earthquake and earthquake liquefaction layer, volcano, landslide, land subsidence, active fracture, soft soil and loose soil, expansive rock and soil, volcanic sedimentary soil, etc., which have a great impact on the line construction. The lithology, cementation degree and strength of volcanic sedimentary soil are extremely uneven, and its cohesive soil has a large void ratio Super high water content, high liquid limit index, high compressibility, special physical and mechanical indexes The total length of Walini Tunnel is 608 meters. The whole tunnel is located on a straight line section. The longitudinal slope inside the tunnel is 1 ‰. It is designed as a single hole double track tunnel. During the construction phase, a construction record of 80 meters of single month excavation of shallow buried soft surrounding rock tunnels in volcanic sedimentary rock areas in Indonesia was created. The surrounding rock of the tunnel is Grade V, and the buried depth of the tunnel body varies from 0 to 37 meters. The tunnel passes through a V-shaped gully, flowing water all the year round, and the buried depth is only 12 meters. Mudstone is widely distributed in the tunnel body, and the tunnel rock is severely weathered, the rock mass is broken, the self stability is poor, and the tunnel construction safety risks are great