Break -point guarantee delivery of Yawan High -speed Rail 2 Tunnel is completed 丨 Go all out to fight for the economy to build

Cover Journalist Zhu Ning

With the completion of the last board lining, the "Belt and Road" iconic project -the Yawan High -speed Rail 2 tunnel project undertaken by the seventh bureau of China Electricity Construction Hydropower is successfully completed. All the heavy difficulty projects throughout the line broke through, and the entire beam channels were all connected, which laid a solid foundation for the completion of the entire board in June 2023.

The No. 2 Tunnel of Yawan High -speed Railway is located in Powaltada, Western, Indonesia, with a total length of 1052 meters and a maximum burial depth of 53.6 meters. It is a single hole and dual -line design. It is one of the most difficult control projects in the entire line.

The reporter learned that since the construction of positive cave on March 22, 2019, due to the complex hydrological geological factors, the full weathering of the volcanic ash deposition is low, and the water collapse is rapid. Tunnels have deformed, slid and mud, and other abnormal conditions have been abnormal 22 times.

In this regard, the person in charge of the project department of the China Electric Power Construction Hydropower Bureau, responsible for the construction of the tunnel, told reporters that in response to complex hydrological geology and construction difficulties, the seventh bureaus of hydropower and machinery mobilized professionals and mechanical entry operations, innovated technology methods, and adopted steel pipe concrete piles. Locking the initial support of the unwanted ring in the cave, resisting the large deformation of the expansion soil surrounding rock tunnel, and realizing a virtuous circle of "fast digging, fast support, fast -to -form ring" of the weak surrounding rock tunnel to ensure the construction of the tunnel.

At present, the 13 tunnels of the Yawan high -speed railway have been completed, and the number of civil construction projects for road bases, bridges, and stations has exceeded 90%. The main line has begun to laid rails. The construction of the project has been fully transferred from offline construction to the online construction stage. The high -speed EMU and comprehensive testing trains tailored for the Yawan high -speed rail have been launched from China to Indonesia.

The Yawan High -speed Railway, which is connected to the Indonesian capital Jakarta and the fourth largest city, has a total length of 142 kilometers in length and a maximum design speed of 350 kilometers per hour. Full elements, all industrial chain construction projects overseas. After the project is completed, Jaca's trip time will be shortened from more than 3 hours to 40 minutes.

- END -