Winner of the National Engineer Award
The State Key Laboratory of Shield and Tunneling Technology was gradually built on the basis of China Railway Tunnel Group's insistence on independent research and development of shield tunneling for many years. These senior experts and R&D personnel are dedicated to China's shield tunneling industry, and continue to help China's tunnel engineering industry to the forefront of the world. Their leader is Hong Kairong, chief engineer of China Railway Tunnel Group and director of the State Key Laboratory of Shield and Tunneling Technology. 
Get rid of the "foreign shield" and realize localizationShield machine, first produced in the United Kingdom, Japan, Germany has been developed and manufactured, is currently the world's most advanced underground tunnel boring machine, in the field of engineering construction, the shield machine is also known as the "king of construction machinery", because it contains mechanical, hydraulic, electrical, fluid and other aspects of the subject knowledge, only parts and components have tens of thousands. This well-deserved national weapon is also an important embodiment of a country's industry. In 2002, the national "863" plan was established for the first time to carry out research on the key technologies of shield machines, which opened the prelude to the independent research and development of shield machines at the national level. In order to break the monopoly of foreign technology, China Railway Tunnel Group was commissioned to develop China's own shield machine, and Hong Kairong undertook the key research and development task of shield cutter cutterhead. After 7 years of hard work, China's independent design and manufacture of "China Railway No. 1" shield machine was born in China Railway Tunnel Group, and China has become one of the few countries in the world that can produce advanced tunnel boring machines. Among them, Hong Kairong led the design and development of the cutter head, more advanced than foreign products, more practical, but the cost is lower, this technical achievement won the first prize of the National Science and Technology Progress Award in 2011, but also changed the "foreign shield" monopoly in the Chinese market. The unremitting accumulation of technology stems from the absolute confidence in technological innovation. Hong Kairong led the innovation team not only to independently develop and produce shields, but also to dare to operate on "foreign brands". In 2011, the construction of Gansu Longzhong water supply project entered the most critical period, and the "foreign shield" was shut down because it did not adapt to the geological conditions, and foreign manufacturers were helpless in the face of problems. The innovation team completed the diagnosis of "foreign shield" in the shortest possible time, and completed the remanufacturing in only 3 months, and the performance of the whole machine was greatly improved, creating a world record of 1868 meters of monthly tunneling, and exceeding 1,000 kilometers of excavation for 8 consecutive months. Nowadays, the "China Railway" series shield machine has played a major role in the construction of national rail transit by virtue of its advantages of low failure rate, high control accuracy and reasonable cost. Impressive results are not achieved overnight. As early as the mid-to-late 90s of the last century, Hong Kairong participated in China's first submarine gas storage project ——— Shantou LPG project as a technical backbone. The research results of the project "Construction Technology of Large-scale Underground Water Sealed Liquefied Petroleum Gas Storage Cavern" presided over by Hong Kairong won the first prize of China Construction Science and Technology Award in 2004, which is of far-reaching significance in the construction of energy storage and underground caverns. In the construction of Metro Line 2, China Railway Tunnel Group undertook the construction task of the section from Yuexiu Park to Sanyuanli, which was technical, risky and challenging. As the technical leader, Hong Kairong led the technical personnel to make major breakthroughs in the development of shield segments, muck improvement, foaming agent and large-tonnage electric frequency locomotives, which effectively promoted the shield construction process. In October 2001, the shield machine successfully penetrated the track group of Guangzhou Railway Station in normal operation, and created an average monthly progress of 331 for a single machine4 meters, the highest progress of the month is 5625 meters was the best level of similar tunnel shield construction at home and abroad at that time. Hong Kairong presided over the completion of the "research and excavation technology of soft and hard uneven strata and complex environment tunnel composite shield technology" won the second prize of the 2006 National Science and Technology Progress Award. 
Overcome difficulties and overcome dangers, cross the river and cross the sea to cast high-quality productsFor Hong Kairong, the Shiziyang Tunnel is a strong stroke in his professional life. With a design speed of 350 kilometers per hour, the Guangzhou-Shenzhen-Hong Kong Railway Passenger Line is a high-grade electrified railway connecting the core areas of the Pearl River Delta. Among them, the total length is 10The 8-kilometer Shiziyang Tunnel is not only the longest underwater tunnel in China, the largest water pressure and the highest standard, but also one of the underwater railway tunnels with the highest speed target value in the world. In November 2007, the shield construction of the Shiziyang Tunnel was officially excavated, and all kinds of difficulties followed, which was placed in front of the project manager Hong Kairong. If nothing else, just in 26The 6-meter-deep river bottom belt pressure into the warehouse to inspect and replace the tools is a world-class construction problem. In order to ensure the opening of the Guangzhou-Shenzhen-Hong Kong high-speed railway, in five years, he led the R&D team to overcome the eight major technical problems faced by the construction of underwater tunnels one by one, and gradually explored a set of slurry shield construction technology for underwater tunnels with special length of soft and hard uneven strata. Under the leadership of Hong Kairong, the workers are not afraid of hardships and dangers, according to the construction situation of the cutter structure, ventilation system, cooling mode to transform and improve, according to the shield machine air cushion bin crusher working environment, optimize the structure to improve the force mode, in order to crush larger stones. In order to implement information management, Hong Kairong and his team also introduced a remote audio monitoring system, so that managers can effectively monitor and manage the whole process of shield construction in the office. At the same time, they took the lead in introducing advanced project management software to effectively control project costs, construction dynamics, resource allocation, etc., so as to achieve "progress control to minutes, cost management to nails", and realize management upgrades. · Curriculum vitaeHong Kairong, male, born in August 1965 in Youxian County, Hunan Province, graduated from Lanzhou Railway Institute and Beijing Jiaotong University with a doctorate degree in bridge, tunnel and structural engineering, and is currently the chief engineer of China Railway Tunnel Group Corporation and the director of the State Key Laboratory of Shield and Tunneling Technology. Hong Kairong has been committed to the research of tunnel and underground engineering construction technology for many years, especially the research of shield construction technology, and his main research field is shield equipment and shield construction. In the technical organization of the Yuesan shield project, the composite shield technology was systematically studied, which broke through the geological forbidden area of shield construction and improved the technical level of shield tunneling method in ChinaThe project won the 2004 China Civil Engineering Zhan Tianyou Award, the formation of the "composite shield construction series construction method" won the national construction method, the scientific research results presided over by the "soft and hard uneven strata and complex environment tunnel composite shield development and tunneling technology" won the 2006 National Science and Technology Progress Award;The results of the national 863 project "Development of Composite Shield Prototype" have passed the expert appraisal organized by the Henan Provincial Department of Science and Technology, and the achievement level has reached the international advanced level, and some key technologies have reached the international leading level, and the achievement has been awarded the special prize of China Railway Engineering Corporation.
Text: Han Jing. 