Transportation
| Tue 31 Mar 2026
Beijing, March 31 -- China Railway 20 Bureau Group has submitted a patent application for Prestress Supporting Method for Soft Rock Tunnel. Wang Xingli, Li Shuguang, Wang Yin, Lyu Pengtao, Xu Jianping, Zhao Xiaofei, Wang Yi, Pei Qiuyang, Li Sheng, Du Pengxiang, Qu Yakang, Zhang Shuai, Yang Jie, Zhang Jihu, Zhang Xubei, Pan Ankan..