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This book puts forward a technological system for the construction of subsea tunnel using drilling and blasting method. Taking the water-induced disaster as the core risk, the safety guarantee system for large cross-sectional subsea tunnels is established. The composite grouting technology referred to ground reinforcement and water plugging is established, which breaks through the technical bottleneck of subsea tunnel construction in highly permeable strata. The process control theory based on water inrush mechanism is created, which gets rid of the over-dependence on engineering experience for disaster control of submarine tunnel. An active control waterproof drainage system based on the synergy of reinforcement ring and support system is invented to solve the contradiction between the control of water displacement and water pressure. The above-mentioned achievements have been successfully applied in the first three large cross-sectional subsea tunnels in China, and have played a key role in the construction safety. The proposed technological system can improve the overall construction level of subsea tunnel, which can provide reference for the design and construction of subsea tunnels, especially for those crossing through weakness zones.
Prof. Dingli Zhang, a professor of Beijing Jiaotong University, is the dean of the Sichuan-Tibet Railway Research Institute, the academic leader of the national key discipline "bridge and tunnel engineering," and also the director of the Key Laboratory for Urban Underground Engineering of Ministry of Education. He has been mainly engaged in the teaching and research work of tunnel and underground engineering. He is fully participated in the construction of major projects in China's railway, highway, and subway tunnels. His researches are mainly focused on four aspects including tunnel design theory, the construction technology of subsea tunnel using drill and blast method, the safety risk control of urban underground engineering construction, the evalutation and synergetic control of long-term tunnel safety. He has made innovative research results in the above fields and formed a systematic theoretical understanding and core technology system. He is the chief scientist of several national key technology research and development programs of China and has been awarded several awards for scientific and technological progress.
