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

Text/Yangcheng Evening News all -media reporter Li Zhiwen Correspondent Zhang Pengfei/Correspondent provided

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 successfully overcome new technical difficulties and achieved breakthrough progress.

Make sure to complete the shield at the fastest speed and minimum disturbance

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 of the tunnel, under the conditions of ultra -long -distance excavation of the bottom of the sea, technical problems such as material transportation, knife wear, mud tube explosion -proof, shield tail sealing, long -range ventilation and other technical problems need to be cracked one by one.

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.

The construction of the Guangzhan high -speed rail project has entered the "acceleration"

At present, the "Yongxing" shield machine has been excavated in a total of 2770 meters in a total of 2,770 meters, the assembly has completed the 1385 ring, entering the section of over 1,300 meters, and the deepest part of 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.

The successful crossing of the main channel of the Zhanjiang Bay Sea Tunnel marks the entry of the "acceleration" of the Guangzhan high -speed rail project, which also means that Zhanjiang has taken a substantial step forward.

After the Guangzhan high -speed rail is opened to traffic, it will achieve 90 minutes from the central urban area of ​​Guangzhou to Zhanjiang, which will help enhance the regional economic status of western Guangdong and promote the overall economic and social development of Zhanjiang. Play an important leading role in strengthening the development of Guangdong's foreign cooperation in the development of "land and abroad, and two -way mutual benefit of east -west and west". The layout has important promotion.

Source | Yangcheng Evening News · Yangcheng School

Responsible editor | Yang Chuyi

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