On the morning of July 29, the domestically developed super-large diameter slurry shield tunneling machine "Jianxun," jointly built by CRCHI and Shanghai Foundation, rolled off the production line at CRCHI's Changsha First Industrial Park. With an excavation diameter of 14.02 meters, the equipment will soon be deployed in the construction of the Shanghai Airport Link Line project.

The "Jianxun" super-large diameter slurry shield tunneling machine

Wang Yinghao, Chairman of the Labor Union of Shanghai Shentie Construction Management Co., Ltd.; Xu Jun, General Manager of the Sixth Company of the General Contracting Department of Shanghai Construction Group Co., Ltd.; Zhang Siqun, President of Shanghai Foundation Engineering Group Co., Ltd.; Zhou Haiyan, Chairman and President of Shanghai Mechanical Equipment Complete Set Co., Ltd.; Song Zhenhua, Secretary-General of the Tunneling Machinery Branch of the China Construction Machinery Association; Zhang Heng, Chairman of Shanghai Metro Shield Equipment Engineering Co., Ltd.; Cheng Yongliang, Deputy Party Secretary and General Manager of CRCHI; Hu Bin, Deputy General Manager and Chief Engineer of CRCHI; Sun Aijun, General Manager of the Southwest Regional Command of CRCHI; and other relevant leaders attended the roll-off ceremony.

Wang Yinghao, Chairman of the Labor Union of Shanghai Shentie Construction Management Co., Ltd., delivers a speech

Xu Jun, General Manager of the Sixth Company of the General Contracting Department of Shanghai Construction Group Co., Ltd., delivers a speech

Zhang Siqun, President of Shanghai Foundation Engineering Group Co., Ltd., delivers a speech

Hu Bin, Deputy General Manager and Chief Engineer of CRCHI, delivers a speech

Sun Aijun, General Manager of the Southwest Regional Command of CRCHI, presides over the ceremony

The Shanghai Airport Link Line is another "landmark project" in the history of Shanghai's rail transit construction. It will more closely integrate the development of the areas along the route, strengthen the comprehensive development of the airport station and its surrounding areas and the comprehensive utilization of above-ground and underground space, optimize the urban functional layout, increase urban economic density, and provide strong support for the higher-quality integrated development of the Yangtze River Delta.

Wang Yinghao, Xu Jun, Zhang Siqun, Zhou Haiyan, Song Zhenhua, and Cheng Yongliang jointly unveil the "Jianxun" at its roll-off

"Jianxun" is the first shield tunneling machine used for Section 7 of the Shanghai Airport Link Line, marking the first shot fired by Shanghai Foundation in the municipal railway project. "Jianxun" is equipped with multiple key technologies, including a atmospheric-pressure soft-soil cutterhead, a high-pressure-resistant main drive seal, a large-flow slurry scouring circulation system, a high-precision gas-liquid pressure balance control system, efficient material transport and synchronous box culvert assembly technology, and a synchronous grouting compactness detection system for wall thickness, greatly improving the adaptability and reliability of the shield tunneling machine and safeguarding the smooth implementation of the project.

Guests pose for a group photo in front of the equipment

This time, Shanghai Foundation and CRCHI have joined hands and combined their strengths to further cultivate the Shanghai rail transit market in depth, taking a crucial step on the road to entering the municipal railway sector and laying a solid foundation for both parties to participate more deeply in large shield tunneling projects in the next round of municipal transportation construction.

CRCHI will make every effort to guarantee and provide good service for the important shield tunneling phase of the Shanghai Airport Link Line project, actively shoulder its responsibilities as a state-owned enterprise, create premium projects, help Shanghai's municipal railway construction enter a new chapter, and promote the high-quality development of the integrated transportation network of the Yangtze River Delta.