CRCHI win 22nd China Patent Awards Gold Medal 'open tunneling machine' 

People inform on 25 June 2021 22nd China Patent Awards. Highest patent awards in China.

China Railway Construction Heavy Industry (CRCHI) is China Tunnel Boring Machine factory. CRCHI win gold medal 22nd China Patent Awards. 'Open Tunneling Machine'

This technology innovate 3 major TBM industry problem. It create a precise and adjustable shield expansion support system. It innovate two-way collaborative excavation control method based on force and displacement feedback. It build an intelligent support system based on surrounding rock identification and condition monitoring.

http://hn.people.com.cn/BIG5/n2/2021/0628/c195194-34796988.html