15
2025-10
15
2025-10
15
2025-10
15
2025-10
01
2025-09
03
2020-07
The "Zhenxing" tunnel boring machine used for the right line of the Yanlu Passage over-river project is a 15-meter-class, ultra-large-diameter slurry shield designed and manufactured by CCCC Tianhe specifically for Nanjing's cross-river tunnel. The tunnel’s shield-driven section spans a total length of 2,975 meters. This project features significant characteristics such as a large cross-section, high water pressure, extended distances, and exceptionally abrasive ground conditions. Moreover, most of the construction lies beneath the riverbed, with the hardest rock layers in the hard-rock sections exceeding 70 MPa in strength. The diverse and complex geological conditions place extremely stringent demands on the cutting tools used during excavation.
2020-07-03
24
2018-11
Abstract: Mr. Chao Huanqing, Vice Chairman and Chairman of Luoyang Jiujiu Technology Co., Ltd., provided several explanations regarding the amendments to the Articles of Association. Based on the feedback received on the amendments to the Articles of Association, the Supervisory Board was elected. Newly appointed Chairman of the Supervisory Board, Mr. Yang Jingrui, delivered a statement outlining the duties, tasks, and scope of authority of the Supervisory Board.
2018-11-24
139, Fengrun East Road, High-tech Development Zone, Luoyang City, Henan Province, China
