"Tiger Shark" opens the way, and the large-diameter slurry balance shield machine "Island" of Railway Construction Heavy Industry is offline to help the construction of the bay tunnel of Guangzhou-Macao Port Railway Project.

February 21，Large-diameter slurry balanced Shield Machine jointly built by China Railway Construction Heavy Industry and China Railway 14th Bureau“The Sakashima”Offline in the primary industry park of Railway Construction Heavy Industry。The excavation diameter of the equipment is 13..42 meters，Cutterhead painted with tiger shark design，The representative construction site is Shantou City.，And moral“Tiger shark”Open the way，Overcome difficulties。

Large-diameter slurry-water balance Shield Machine for railway construction heavy industry“The Sakashima”Offline ceremony

Speech by Cheng Haiyun, Party Secretary of Shenzhen Engineering Construction Command of Guangzhou Railway Group

Lin Zhenhong, Chief Engineer of Shenzhen Engineering Construction Command of Guangzhou Railway Group, announced that the equipment was offline.

Zhang Yanlun, deputy general manager of China Railway 14th Bureau, delivered a speech.

Deputy Secretary of the Party Committee of Railway Construction Heavy Industry、Director、He Yongjun, chairman of the trade union, delivered a speech.

It is reported that，“The Sakashima”It will be used for the construction of the bay tunnel of the new Guangzhou-Meizhou-Shantou Railway Project from Shantou Station to Guangzhou-Macao Port Area.，The shield section of the project is 2990 meters long.，The shield tunnel mainly passes through the soil layer、Rock formation、Uneven hardness and fault zone，And under the Bay Tunnel.，Sea water pressure is high，High risk of shield tunneling，Cutter change operation for pressure belt feeding、High requirements for sealing configuration of Shield Machine。

For large diameter of this project、High water pressure、Long downhill、Strong corrosion and other construction difficulties，The R & D team of China Railway Construction Heavy Industry is“The Sakashima”A series of targeted designs were carried out.，Equipped with constant pressure composite cutter head、Telescopic main drive、Visual system of excavation bin、Automatic measurement monitoring、Many innovative technologies such as online perception of tool status，O as to ensure the safety of the shield machine.、Fast tunneling。

Guangzhou-Macao Port Area Railway is a key construction project in Guangdong Province.，After completion, it will help Shantou Port to expand its northward radiation depth.，Provide convenient access to the sea for surrounding provinces and cities，At the same time, it also provides convenient conditions for efficient collection and distribution of regional material elements.，It is of great significance to build a modern port city along the southeast coast.。

Guests pose for a group photo in front of the equipment

The second day of February，Spring returns to the earth，Everything revives，“The Sakashima”Off the line smoothly，It marks that the construction of the Bay Tunnel of the Guangzhou-Macao Port Railway Project is about to enter a new stage.。Coming up，The shield machine will be dismantled and transported to the construction site.，After completing the assembly and commissioning of the whole system，Formally start tunneling。China Railway Construction Heavy Industry Co., Ltd.“Based on quality，Customer first”The idea of，Provide high-quality service for the whole life cycle of shield machine，Ensure the smooth completion of the project。

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