en.Wedoany.com Reported - At the National Science and Technology Awards Conference, the Academicians Conference of the Chinese Academy of Sciences and Chinese Academy of Engineering, and the 11th National Congress of the China Association for Science and Technology held in Beijing on July 8, China Communications Construction Company (CCCC) won one first prize and three second prizes of the National Science and Technology Progress Award, and one second prize of the National Technology Invention Award.
CCCC has continuously strengthened independent innovation and core key technology research, stimulated the innovation vitality of scientific and technological workers, and promoted the emergence of scientific and technological innovation achievements. To date, CCCC has accumulated 64 National Science and Technology Progress Awards and 6 National Technology Invention Awards.
First Prize of the National Science and Technology Progress Award — "Key Technologies, Equipment, and Application for the Steel Shell Concrete Immersed Tunnel of the Shenzhen-Zhongshan Link"
The Shenzhen-Zhongshan Link is a major national project and a core transportation hub in the Guangdong-Hong Kong-Macao Greater Bay Area. It is one of the most technically challenging cross-sea cluster projects in the world, integrating bridges, islands, tunnels, and underwater interchanges. The subsea tunnel has a total length of 6,845 meters, with an immersed tube section of 5,035 meters. Facing extremely harsh conditions such as ultra-wide span, deep burial, and heavy siltation, it is the world's longest and widest subsea steel shell concrete immersed tunnel. The project creatively achieved a leap from zero to a leading position in China's steel shell concrete immersed tunnel technology.
Targeting the most difficult and innovative subsea tunnel project of the Shenzhen-Zhongshan Link, the Public Works Design Institute (PWD), as the lead of the design consortium, undertook the overall tunnel design and the steel shell concrete immersed tunnel design. The consortium formed by First Harbor Engineering Company (FHEC), Fourth Harbor Engineering Company (FHEC), and Guangzhou Dredging Company (GDC) undertook the construction tasks of tunnel foundation trench excavation, desilting, foundation treatment, immersed tube prefabrication, installation, and the integral prefabricated underwater push-out final joint. As the world's first two-way eight-lane deep-buried subsea immersed tunnel, the Shenzhen-Zhongshan Link immersed tunnel set multiple world records in cross-section, span, and volume, making it the most technically challenging controlling project. After 12 years of scientific and technological research, the CCCC project team established the first design theory for a new structure of ultra-wide, deep-buried, compartmentalized steel shell concrete immersed tunnel, developed five key core equipment sets including the world's first self-propelled integrated tube floating and installation vessel, pioneered a series of intelligent construction technologies for soft foundation treatment, tube prefabrication, floating, and installation, created a new type of integral floating underwater push-out final joint, and overcame the global challenge of safe long-distance floating and high-precision docking of giant tube sections, achieving millimeter-level installation accuracy for 80,000-ton tube sections in deep water. Upon the project's opening, President Xi Jinping sent a congratulatory letter, commending the project team for overcoming numerous world-class technical challenges and setting multiple world records.
Second Prize of the National Technology Invention Award — "Micro-Field Driven Low-Chemical, Short-Process Water Treatment Technology and Equipment"
Addressing industry pain points such as high chemical consumption, lengthy processes, relatively high energy consumption, and large footprint in traditional water treatment processes, and the contradiction with low-carbon development, the project focused on the core issue of low-chemical, short-process water purification. By utilizing micro-electric fields and micro-flow fields to regulate and enhance reaction activity and mass transfer rates, it broke through the coupling technology of micro-field-driven flocculation and membrane separation, opening a new path for low-consumption, short-process water treatment.
OriginWater achieved full-chain innovation in low-chemical, short-process water treatment membrane materials, equipment, processes, and engineering applications. It invented gradient-pore ultra/microfiltration membranes with pore sizes gradually increasing from the inside out, establishing a large-scale production line. It created a method for simulating gas-liquid-solid three-phase micro-flow fields in membrane modules and optimizing the dynamic membrane structure of the filter cake layer. It invented a low-energy, high-load MBR module with trough-type gas collection and pulse aeration. It also invented a new intensive wastewater treatment process based on high-load MBR modules. These achievements effectively broke through industry technical bottlenecks and solved the technical challenges of intensive construction for underground wastewater treatment plants. The results have achieved large-scale industrial application, covering scenarios such as drinking water purification, municipal wastewater treatment, and industrial wastewater reuse, with a total scale of 4.79 million tons per day, and have been extended to empower water governance projects in countries participating in the Belt and Road Initiative.
Second Prize of the National Science and Technology Progress Award — "Key Technologies, Equipment, and Application for Autonomous Positioning and Navigation of Ships in All Sea Areas"
Positioning and navigation technology is the fundamental guarantee for efficient and safe ship navigation. Addressing the major task requirements for building an autonomous positioning and navigation equipment system for ships in global sea areas, the project overcame three international technical challenges: large errors in R-mode autonomous positioning, poor accuracy of multi-source autonomous positioning on the ship side, and difficulty in reliable monitoring of ship position. It developed a complete set of technologies and equipment for autonomous positioning of ships in all sea areas, effectively solving the problems of ships being unable to determine their position, determining it inaccurately, or lacking reliability.
The National Engineering Research Center for Dredging Technology and Equipment, focusing on the unique deep-sea, sensitive sea areas, and complex geological conditions of China's dredging operation areas, developed high-precision autonomous positioning and intelligent monitoring technologies suitable for dredging vessels, as well as multi-mode communication fusion and adaptive switching technologies, forming a Beidou-based integrated positioning and communication device. The project results have been applied on a large scale in China's coastal areas and Belt and Road projects, promoting the high-quality development of China's autonomous and controllable ship navigation equipment industry.
Second Prize of the National Science and Technology Progress Award — "Equipment and Key Technologies for Rapid In-Situ Solidification and Efficient Large-Scale Resource Utilization of Silt and Soft Soil"
Addressing the national dual-carbon strategy and the construction of zero-waste cities, the project developed three types of efficient resource utilization technologies for silt and soft soil, constructing a three-dimensional multi-path utilization system. This significantly enhanced the overall innovation capability and equipment level of China's engineering construction and waste silt/soft soil resource utilization industry, promoting the development and technological progress of in-situ solidification of silt and soft soil, and hydrothermal solidification for building material utilization.
The National Engineering Research Center for Dredging Technology and Equipment, focusing on the field of river and lake environmental dredging and sediment treatment and disposal, addressed the challenge of disposing of massive dredged soil generated by projects such as river and lake management, canal construction, and water system connectivity in China. It developed advanced equipment such as integrated intelligent dewatering complete sets and mobile river and lake sediment dewatering equipment. It formed multiple key technologies including efficient environmental dredging of river and lake sediment, optimized allocation, and multi-path resource utilization. It also developed high-value products from dredged mud, such as blended planting soil, high-quality ecological soil, and cement-free concrete. The relevant results have been successfully applied in multiple key environmental protection projects in cities including Wuhan, Shenzhen, Shanghai, Xiamen, and Guangzhou.
Second Prize of the National Science and Technology Progress Award — "Key Technologies and Application for Perception, Prediction, and Collaborative Control of Strong/Typhoon Effects on Long-Span Bridges"
Long-span bridges, characterized by flexible structures and low damping, are typical wind-sensitive structures. Against the backdrop of frequent strong typhoon disasters, their wind resistance safety issues are becoming increasingly prominent. The Public Works Design Institute (PWD), addressing the major needs for the safe construction and service of long-span bridges, participated in joint research on multiple original achievements in wind effect perception, prediction, and control. These achievements were applied to several major bridge projects, including the world's first cable-stayed bridge with a main span exceeding one kilometer, the Sutong Bridge; the largest-span suspension bridge, the Zhangjinggao Bridge; and China's first long-span steel box continuous girder bridge, the Chongqi Bridge. These applications effectively enhanced the wind resistance performance of the bridges, ensuring safe and stable operation, with significant economic and social benefits.
