Railway construction will create the largest diameter shield machine

Railway construction heavy industry to China Railway sixteen Bureau signed a strategic cooperation agreement to jointly develop large diameter slurry shield machine 12.81m.

It is reported that the new line to the Zhengzhou Xinzheng International Airport South Station intercity railway project as a key project in Henan Province, the length of 7.397km, the continuous shield excavation section of 3.8km, the middle through silt and silty clay calcareous strata, and beneath the South North Water Diversion Canal, many difficult formation differences, ground building complex large diameter and super shallow buried depth, one-time driving distance is long, the comprehensive performance of all the requirements of shield tunneling equipment must have high.

Super large diameter slurry shield machine is a set of excavation, discharging, special construction equipment light hydromechatronics engineering in an underground tunnel lining support excavation operation, has a significant advantage in the tunneling construction state continued construction of river crossing tunnel. Moreover, the large diameter slurry shield with high technological content, complicated manufacturing process, high value-added products, industry concentration is higher than the advantages, has become the country to vigorously promote the development of city rail transportation equipment industry core high-end equipment.

After the successful development of the equipment, it will become the largest self owned intellectual property rights of the largest diameter slurry balance shield machine, applied to the new Xinzheng airport to Zhengzhounan Railway Station intercity railway project.

Before the core technology of this equipment has been developed countries such as Germany and Japan monopoly, domestic procurement all rely on imports, heteronomy.

The signing of the joint development, railway construction and railway sixteen Bureau will play their respective advantages, composed of R & D group, joint development and application of large diameter boring scientific research equipment ". The sixteen Bureau of China Railway Tunnel Construction Based on the rich experience, to shield design, railway construction heavy industry mature production technology as the foundation, in the large diameter excavation equipment design technology, digital model of large diameter excavation equipment design and manufacturing technology, high precision excavation chamber gas pressure independent balance control technology, high power water scour circulation system control technology multi source, high power synchronous drive control technology, large size parts quality control and detection technology and other core technologies to achieve a breakthrough in one fell swoop, to fill the gaps, and strive to reach the international advanced level.

The completion of the shield machine will become the largest shield machine in the history of the domestic shield machine.