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Beijing: Proprietary subway noise reduction technology

2011/07/13

Proprietary noise reduction technology developed in China will be used for the second phase of Beijing subway Line 10 now under construction.

Using a suspended steel spring system under the rails, the apparatus flexes 4 millimeters when a train passes, easing vibration and reducing noise.

Similar technologies were before only produced by overseas companies. The systems used in Beijing's existing subway lines are all expensive imports.

A lab at the Beijing Municipal Institute of Labor Protection started working on the new design in 2007. Its prototype was installed on a 180-meter section of Line 4, which was completed in 2009.

(Beijing Youth Daily)




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