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China's homegrown shield equipment localization rate of 60 percent

China's homegrown shield equipment localization rate of 60 percent

(Summary description)Xinhua, November 10 on the 10th, the field of advanced manufacturing technology key projects of National 863 Program "mud balance shield key technology and prototype development" project by the Chines

China's homegrown shield equipment localization rate of 60 percent

(Summary description)Xinhua, November 10 on the 10th, the field of advanced manufacturing technology key projects of National 863 Program "mud balance shield key technology and prototype development" project by the Chines

  • Categories:Trade News
  • Time of issue:2022-06-15 16:23
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Xinhua, November 10 on the 10th, the field of advanced manufacturing technology key projects of National 863 Program "mud balance shield key technology and prototype development" project by the Chinese Ministry of Science and technology acceptance in a number of key technologies to reach the international advanced level. This indicates that large shield localization has been a major breakthrough.

Slurry shield prototype with completely independent intellectual property rights issues and developed by the Shanghai Urban Construction Tunnel shares of five units bear "into more", a diameter of 11.22 meters, successfully applied for the Shanghai World Expo supporting Dapu double-track the tunnel project, completed the 1472 m long tunnel boring task. During the construction process, the slurry shield machine "into the more" promote the smooth and more the characteristics of the domestic shield device manipulation handy, especially in the adjacent structures protection and ultra-small radius of tunnel thrusters.

As a national "Eleventh Five-Year" key research and development projects, the slurry shield key technology and prototype development of the "subject to shorten the gap of China in the field of shield equipment and international advanced level, to fill the domestic balance in the large diameter slurry shield machine design and manufacture of the core technology in the field blank, change the situation of China's large-diameter shield is totally dependent on imports.

According to reports, the import of a 11 m diameter slurry shield normally takes about 160 million yuan, the key technology of large diameter slurry shield, the localization rate of 68.33% self-developed 1 1 .2 billion yuan, the cost can be reduced by 25%.

At present, various types of tunnel construction shortfall of thousands of kilometers over the next five years, a new share of shield machine and the old shield machine update more than one hundred domestic shield can be substantial cost savings.

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Key words: hield tool  Engineering tool  Wear-resistant heart

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