Guangzhan high -speed rail Zhanjiang Bay Underwater Tunnel Shield Machine successfully crossed the main channel

Wen, Figure/Yangcheng Evening News all -media reporter Yuan Zengwei correspondent Zhang Pengfei Hu Anjiang

At 10 am on September 13th, it was invested and constructed by the Guangdong Guangzhan Railway Company, the general contracting of China Railway EPC EPC, and the "Yongxing" shield machine undertaken by the China Railway 14th Bureau Group Group. Crossing the main channel of Zhanjiang Bay, during the period of Zhanjiang Bay's main channel, it did not have any impact, marking that the Zhanjiang Bay Underwater Tunnel has successfully overcome new technical difficulties and achieved progressive breakthroughs.

Zhanjiang Bay Oceanic Tunnel is a full -length control project with a single hole and double line. Among them, the shield section is 7551 meters, the shield excavation diameter is 14.33 meters, and the outer diameter of the tube is 13.8 meters. Shield tunnel.

"Zhanjiang Bay's main channel is a first -level risk source in the Zhanjiang Bay Underwater Tunnel Project. It is also the deepest part of the crossing. It is very strict for shield machine operations, parameter control, and equipment performance. According to the manager Wang Hao, the water pressure under the main channel of Zhanjiang Bay is greater, and the shield machine is facing a huge test at the lowest point of the minimum at the bottom of the sea. At the same time, with the extension of the mileage, the material transportation, knife wear replacement, mud tube explosion -proof, shield tail sealing safety, long -range ventilation, long -range ventilation, and long -range ventilation are cracked under ultra -long -distance excavation conditions.

It is understood that the main channel of the Zhanjiang Bay Underwater Tunnel this time is 195 meters long. It is the most important maritime transportation line in Zhanjiang Bay Sea. The size of the cover is under pressure, and the construction difficulty and risk are high.

In order to successfully realize the "Yongxing" shield machine through the main channel of Zhanjiang Bay, the project strengthens maritime monitoring and in -cave monitoring, implements 24 -hour leadership control, and invites shield experts to discuss the technical solution The smallest disturbance completes the mission under the shield. During the main channel through the main channel, Guangzhan Company, the total contracting department, the supervisory unit, and the project department formed a linkage mechanism, formulated strict construction plans and emergency response plans, optimized construction organizations, strengthened the safety and quality control of the process, and monitored Zhanjiang in real time through the smart command center to monitor Zhanjiang in real time. Various data and "Yongxing" parameters of the main channel of the Bay to ensure safe and smooth crossing.

At present, the "Yongxing" shield machine has been excavated in a total of 2770 meters in a total of 2770 meters, and the 1385 ring is assembled. It enters the section of more than 1,300 meters. It has successfully crossed the deepest part of the Zhanjiang Bay. It is expected that the overall excavation construction task of the sea section will be completed by the end of the year.

The total length of the Guangzhan high -speed rail is about 401 kilometers. The line starts at the Guangzhou Railway Station. It passes through Foshan, Zhaoqing, Yunfu, Yangjiang, Maoming, Zhanjiang and other cities. 100 million yuan, designing driving speed of 350 kilometers, is the longest high -speed rail project in Guangdong Province and the largest investment.

Source | Yangcheng Evening News · Yangcheng School

Responsible editor | Wei Qin

School pair | Peng Jiye

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