CCCC Hongyu (Hunan) Water Conservancy Engineering Co., Ltd.

Hunan Hongyu Engineering Group Co., Ltd. is a brand-new joint-stock enterprise developed from the former Hunan Hongyu Water Conservancy and Hydropower Geotechnical Engineering Co., Ltd. It currently has more than 630 employees of various types, including more than 200 professional and technical management personnel, 29 personnel with senior professional titles, 6 researcher-level senior engineers, 58 personnel with intermediate professional titles, 3 technicians, and more than 400 professional and technical workers. It is a comprehensive technology-based engineering enterprise in the domestic water conservancy, hydropower and foundation treatment engineering industry with a complete range of professional disciplines, strong comprehensive strength, advanced equipment and leading technology. The company owns three subsidiaries: Hunan Bowang Hydropower Construction Co., Ltd., Hunan Hongyu Labor Service Co., Ltd., and Changsha Rongke Environmental Engineering Machinery Co., Ltd., as well as four out-of-province branches in Sichuan, Xinjiang, Yunnan and Guangdong, and has invested in and reorganized Tunnel Engineering (Papua New Guinea) Co., Ltd. It currently holds Grade I qualification for general contracting of water conservancy and hydropower engineering, Grade I qualification for professional contracting of foundation and foundation treatment engineering, Grade A qualification for geological disaster investigation and treatment construction, Grade II qualification for professional contracting of river and lake regulation engineering, Grade III qualification for professional contracting of environmental protection engineering, Grade B qualification for geological disaster assessment, Grade C qualification for design, and special engineering construction qualification. It also has a certification system integrating quality, environment, and occupational health and safety management systems. It can undertake general contracting construction of various water conservancy and hydropower projects and foundation treatment engineering construction, waterproofing and reinforcement engineering of various buildings and their underground works, water prevention and treatment engineering of mines and underground foundation pits, environmental protection engineering construction, engineering slope engineering, geological disaster treatment engineering construction, geotechnical engineering investigation and design, geological disaster investigation, assessment and design, engineering management, research and development of new technologies and new processes, and research, development and production of new equipment and new materials.

In recent years, the company has completed hundreds of various engineering projects. The scope involves water conservancy and hydropower dam projects, dike projects, foundation treatment projects, risk removal and reinforcement of water conservancy projects, waterproofing and water treatment of urban underground tunnels, waterproofing and water treatment of mines, tunnel engineering, roadbed engineering, foundation pit engineering, structural reinforcement of buildings, engineering investigation, geological disaster investigation, design, assessment and treatment, engineering testing, etc.; the Hunan Jiangya Water Conservancy Hub Dam, the foundation treatment construction of the Zaoshi Water Conservancy Hub Dam, the curtain grouting of the Xiaolangdi Water Conservancy Hub powerhouse, the construction of the Linziping Reservoir Project in Mangshan, Chenzhou, the construction of the Ronghuan Hydropower Station Project in Hengdong, the construction of the water diversion project of the Pijiaya Reservoir in Cili, the construction of the Niaozhuyuan Sluice Project in Dongkou, the risk removal and reinforcement construction of the Liupu Hydropower Station in Quanzhou, Guangxi, the high-pressure jet grouting seepage prevention curtain construction in the deep sand and gravel layer of the powerhouse foundation pit of the Jinnah Power Station in Pakistan, the seepage prevention construction of the Hebi section of the Middle Route of the South-to-North Water Diversion Project, the controllable grouting seepage prevention curtain construction for large water inflow and leakage in the cofferdam of the powerhouse of the Wuxi Hydropower Station on the Xiangjiang River, the water blocking and seepage prevention grouting under the conditions of strong karst and high water head (30m) and large flow (2.8m3/s) of the Gao'an Reservoir in Dong'an, the risk removal and reinforcement construction of the roller-compacted concrete high double-curvature arch dam of the Shaba Hydropower Station in Guizhou, the seepage prevention curtain and slope investigation, design and construction of the deep sand and gravel layer (58m) of the Gushan Mine open-pit quarry of Maanshan Iron and Steel Group, the investigation, design and construction of the geological disaster prevention and water control project of the Changde Southern Limestone Mine of Southern Building Materials, the waterproofing and water treatment construction by controlled grouting in multiple overburden excavation sections of Guangzhou Metro, Nanning Metro, Fuzhou Metro, etc., and the reinforcement construction of Longyou Grottoes in Zhejiang are all representative works of our company. In addition, many projects such as 'Risk Removal and Reinforcement of the Dam of Xiaofeng Reservoir in Guangxi' and 'Risk Removal and Reinforcement of the Dam of Linziping Reservoir' have won provincial and ministerial quality engineering awards; among them, technologies and equipment and materials such as karst leakage plugging under dynamic water conditions, controllable grouting water blocking and seepage prevention in sand and gravel layers and soft overburden layers, seepage prevention and consolidation grouting of roller-compacted concrete high double-curvature arch dams, waterproofing and reinforcement of underground works, and controllable grouting pile construction are all at the domestic and international advanced level.