Construction
| Fri 18 Sep 2026
Beijing, Sept. 18 -- Sinohydro Bureau 14 has obtained a patent for marking device for hydraulic tunnel surrounding rock over-break and under-break detection. This invention was developed by Guo Wanfei, Xu Huitao, Wang Ying, Gao Chaoyi, Wang Song, Jiang Changmin, Ye Jian, Li Qiaosheng, Xue Tianliang, Bao Yuhai, Lyu Shihui, Zhang ..