my country has the shallow buried deep, the softest strata, and the largest diameter road shield tunnel of the high diameter of the granules.

On July 15th, Zhuhai Hengqin Guangdong -Australia's deep cooperation zone -Zhuhai Hengqin La Chau Tunnel, which was invested by China Railway Construction Investment Group and built by China Railway 15th Bureau Group, began to excavate. This is one of the super -large -diameter shield tunnels with the softestness, the softest, and slightly fine particles in China.

It is reported that the Zhuhai Hengqin La Chau Tunnel project project is located in the deep cooperation zone of the Zhuhai Hengqin Guangdong -Australia, with a total length of about 2.57 kilometers. The project is connected to the Hongwan District of Zhuhai City in the north. It is an important practice of building a new channel for the Cantonese of the Hengqin Guangdong -Australia In -depth Cooperation Zone to respond to the major deployment of the "one country, two systems" in the new era, and promote the urban development of the Guangdong -Hong Kong -Macao Greater Bay Area.

The construction tunnel is located in the mud layer, the deepest part of the mud is 50 meters, and the shallow soil of the tunnel is only 7.2 meters. It is currently the most large -diameter shield tunnel with the most deeply buried deep -buried, the softest, and the highest granular content in China. Facing the complex construction environment such as ultra -soft strata, ultra -shallow soil, ultra -steep slope, and ultra -fine particles, the construction party China Railway 15th Bureau invited the team of Chinese engineering academicians and the top experts in the domestic shield field. Diameter mud water balance shield machine "revitalization".

The shield machine excavates a diameter of 15.01 meters and the installed power is 9755 kilowatts. It basically realizes localization in the core software and hardware. It is currently a large diameter shield machine that is independently developed in my country and the world's top ranking. An important sign of chain autonomy.

The "revitalization" starts from the left line of the south bank. After reaching the work well on the north bank, the turn is transferred to the right line. After reaching the North Bank, it does not have the conditions for transportation, and can only be turned inside the cave. In order to solve the problem of the second start of the shield machine, the construction team led the design and development of the workers suitable for the oversized diameter shield assembly and heading. It applied the shaft rotor technology to the large diameter shield field. This is the first case in China.

It is reported that the Hengqin Yizhou Tunnel Project is expected to be opened to traffic in 2024. At that time, Hengqin Island, Hongwan District, Bonded Area, etc. will be connected in series to speed up the integration of multiple industrial functional areas of Zhuhai and Hengqin Guangdong -Australia. The interconnection conditions of Qinyue and Australia In -depth Cooperation Zone are of great significance for implementing the construction of the Guangdong -Hong Kong -Macao Greater Bay Area and the important strategic deployment of Hengqin Guangdong -Australia's deep cooperation zone.

Text/Guangzhou Daily · Xinhuacheng Reporter: Quanjietu/Guangzhou Daily · Xinhuacheng Reporter: Quanjie Guangzhou Daily · Xinhuacheng Editor: Ma Junxian

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