China 188bet app download Service, Fushun, October 4 (Reporter Liu Zhongjun) October 4，Sichuan Zigong to Yibin high-speed railway control project、The Shan Shuewan Tunnel, the only high gas tunnel on the entire line, is connected，The tunnel penetration has laid a solid foundation for the completion and opening of the entire line to traffic。
The cantilever boring machine is undergoing construction work at the 188bet app download construction site。Photo by Liu Zhongjun
Design speed of Sichuan 188bet app download to Yibin high-speed railway is 350 kilometers per hour，Starting from 188bet app download East Station in the north，Go south through Dengguan Town, Fushun County, 188bet app download City and enter Yibin City，Zai Jing Da Guan、Lingang to Chongqing-Kunming Railway Yibin Station。14 new tunnels on the main railway line，The total length of Shan Shue Wan Tunnel is 1,200 meters，For high gas、Shallow burial、High risk tunnel，Construction is difficult，is a key control project across the board。
188bet app download detector He Daigui is measuring the 188bet app download concentration in the tunnel。Photo by Liu Zhongjun
"The maximum surface soil burial depth of Shan Shuewan Tunnel in Ziyi Section is 54 meters，Minimum is only 3 meters，Dense buildings on the ground at the entrance，It crosses Dengni Road, a provincial highway with large traffic volume，It is a typical underground excavation and shallow tunnel。" said Yang Pengtao, project manager of the Second Project Department of the Ziyi 188bet app download Railway Project Headquarters of China Railway Beijing Engineering Bureau，Undercut shallow tunnels have extremely high requirements on construction technology and tooling configuration，If traditional artificial blasting is adopted, it will seriously affect the normal life of residents，It will also cause certain damage to ground buildings，Experts decided to adopt the “cantilever boring machine construction plan” after many rounds of discussions，Can effectively control the disturbance and deformation of tunnel surrounding rock and construction noise，Reduce interference to residents’ lives and damage to ground attachments。
Yang Pengtao said，The Shan Shue Wan Tunnel was originally planned to be completed by the end of 2020，But in August 2020, flammable gas suddenly appeared when digging 324 meters in one direction from the exit end，Confirmed to be 188bet app download gas by on-site detection，Subsequently, the Shan Shue Wan Tunnel was adjusted from an ordinary tunnel to a 188bet app download gas tunnel，And in accordance with the construction requirements of 188bet app download gas tunnels，Change the previous ordinary explosives to professional coal mine gas explosives and electric detonators，Comprehensive modification of various types of machinery and electromechanical equipment、Equipped with full-time gas detectors, etc.。To speed up the construction progress，The construction unit has added a working surface at the entrance，Two-way tunneling construction。
188bet app download to Yibin high-speed railway control project、The Shan Shuewan Tunnel penetration site, the only high gas tunnel on the entire line。Photo by Liu Zhongjun
The 188bet app download-Yibin high-speed railway connects to the Chengdu-Chongqing intercity railway through the Mianlu High-speed Railway’s Zilu Line，Southern connection between Chengdu-Guizhou High-speed Railway and Chongqing-Kunming Railway，Is an important part of the "Beijing-Kunming" line of the national "Eight Vertical and Eight Horizontal" high-speed rail network。At the same time, it is an important part of the intercity railway network of the Chengdu-Chongqing Economic Zone and one of the rapid passenger transport corridors of the southern Sichuan urban agglomeration，is a rapid railway serving passenger flow in the secondary central cities of the Chengdu-Chongqing Economic Circle。
As understood，The Sichuan 188bet app download to Yibin high-speed railway is expected to be completed and opened to traffic in 2023，It will be connected with the Chengdu-Ziji High-speed Railway，The formation of a high-speed railway channel with a full speed of 350 kilometers per hour from Chengdu to Yibin via 188bet app download，Smooth Sichuan’s southbound railway channel。
Attachment:
