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According to reports, the national major technical equipment development plan is part of the national key scientific and technological breakthrough plan. Among them, the complete set of equipment for the South-to-North Water Diversion Project is jointly sponsored by the Ministry of Water Resources and the Federation of Machinery Industry. This is also the first major technical equipment development project undertaken by the water conservancy system.
With the strong support of the relevant ministries and commissions of the country, the water conservancy system and the equipment manufacturing industry have worked together. After three years of careful preparation and repeated demonstration, the project uses cooperation with international manufacturers and technology for key technologies that are weak in the domestic infrastructure and can't be resolved in the short term. In combination with the introduction of prototypes and other methods to solve; At the same time, give full play to domestic technological advantages, and guide enterprises to cooperate with powerful scientific research institutes and colleges and universities, enhance technological innovation capabilities, and strive to resolve the key technologies. The project has set a total of 5 topics, 19 topics (adjusted to 22 later), and 49 participating institutions. The total project investment is 208 million yuan. In the end, independent research and development of 17 sets of equipment (sets), 45 new products, obtained 22 patents, including 2 invention patents.
Especially for large-scale technical equipment required for the construction of large water conservancy and hydropower projects such as the South-to-North Water Transfer Project, the project includes large-scale low lift pump, large-scale channel construction, long-buried long tunnel construction, real-time monitoring and management of water resources, and other large-scale hydraulic engineering construction technologies and equipment. Five major areas have been studied and a series of important results have been achieved:
Research on large-scale low-lift hydraulic pump hydraulic model device and automatic control system: Based on the actual needs of the East-line project, the computer optimized design software for the guide vane mixed-flow pump was developed, a new method for predicting the performance of the prototype unit of the pump station was proposed, and a guide vane method was developed. Mixed-flow pumps (specific rotation speed 500), vertical axial flow pumps (specific rotation speeds 600, 850, and 900) and through-flow pumps (specific rotation speeds 900 and 1200) hydraulic model devices basically cover the pump-type demand range of the eastern line pump station. The Ministry of Water Resources organized the “Simultaneous Testing of the South-to-North Water Diversion Project Model†to verify that the performance indicators are superior; the on-site monitoring and protection equipment of the pump station has been applied in urban drainage, agricultural irrigation, etc., and the management of the pump station, on-site monitoring, and remote scheduling have been realized. Integrated Information Management.
Development of large-scale channel construction machinery technology and equipment: research and development of large-scale channel concrete paving mechanization construction technology, cloth, vibration, roller compaction molding and construction equipment control technologies; development of a variety of specifications of channel concrete paving equipment; research of large-scale Aqueduct mechanical construction of cast-in-place trough and prefabricated trough construction technology and complete sets of equipment technology, in order to improve the technical level of China's large-scale construction of the channel conducted a beneficial exploration.
Deep-buried long tunnel construction technology and equipment development: The internal rules of the host parameters of the full-section TBM were studied, and the transformation design of the main components, hydraulic system and electrical system, control and guidance system was completed. The TBM host design technology system has mastered the processing technology and assembly technology of the main parts of the large-diameter roadheader; it has developed advanced geological prediction instruments based on drilling rigs and TBM construction short-term forecasting instruments based on acoustic reflection method, which has improved the geological advancement of TBM construction in China. Forecasting technology level; Completion of the design scheme of post-matching system, and development of computer-aided design and decision support system.
For large-scale water conservancy project construction equipment, the key technology for pumping three-grade concrete is solved, and the developed equipment has been applied in the project; the deep mixing and wall-forming equipment integrating deep mixing and high-pressure spray irrigation into one is successfully developed. (Maximum construction depth is 50 meters), single hoisting point double-drive high lift fixed hoist hoist (85 meters lift), super large (2 x 6 cubic meters) forced pre-cooling concrete mixing building; studied 30 tons of cable The machine design technology has solved the main technical problems of the tower belt conveyor and the high-speed belt feeding line.
The water resource optimization configuration management system has been constructed: it has established a regional water resource optimization configuration management platform in the plain river network area; it has overcome key technologies such as ultrasonic time difference, acoustic Doppler, velocity area method and other real-time water monitoring devices, and realized the water conveyance channel, The real-time flow information of the channel was collected by no one and provided technical support for the remote control of water resources; developed dissolved oxygen, temperature, turbidity, ammonia nitrogen, total organic carbon, permanganate index, total phosphorus, total nitrogen, chemical aerobic The 11-series automatic water quality monitoring system and the real-time monitoring data management system for water quality have broken the technical monopoly of China's foreign water quality monitoring technology products and laid the foundation for forming a complete technical support system for water resources management.
Experts at the meeting believed that the project implementation results showed that the research content and the key objectives were in line with the requirements of the project, the technical route was correct, and the prescribed research and development tasks were basically completed, which made a foundation for the major technical equipment required for the construction of large water conservancy and hydropower projects such as the South-to-North Water Transfer Project. Development and innovative work.
Relevant water conservancy experts stated that after years of development, China’s water conservancy industry has made considerable progress in technical research, especially in sediment research, high dam design, and large-scale hub construction, and it has been in an international leading position, but its water conservancy technology equipment is greatly Lag behind the progress of water science and technology, in many areas still need to import a large number of foreign instruments and equipment. The implementation of the complete set of equipment for the South-to-North Water Diversion Project has led to the successful development of a large number of new key equipment, which has greatly enriched the design and construction methods for China's water conservancy and hydropower project construction.
After years of joint research, the South-North Water Diversion Project completed a major breakthrough in five major areas. On August 14th, the Ministry of Water Resources and China Machinery Industry Federation co-hosted the “15th Five-Year Plan†national major technical equipment development plan—the Acceptance Meeting for the South-North Water Diversion Project Complete Equipment Development Project. Soli Sang, Honorary Chairman of the Science and Technology Committee of the Ministry of Water Resources, Deputy Secretary General of the China Federation of Machinery Industry Yan Yongbin, and the Ministry of Water Resources Planning and Planning Department, the Ministry of Construction and Management, the Planning and Design Bureau of the South-to-North Water Transfer Project and the China Institute of Water Resources and Hydropower Research, and other units Experts attended the meeting. Zhai Yongbin said that through the project's research, focusing on water conservancy construction, relying on national key projects, through the introduction of technology, digestion and absorption, independent innovation, improved the level of China's water conservancy equipment, narrowed the gap with the advanced level of foreign countries and filled the gap. Replaced imports.