Recently, the Engineering and Materials Division of the National Natural Science Foundation of China issued the review opinions on the completion of major projects of the National Natural Science Foundation. The major project "Basic Theory for Resilience of Deep Underground Space in Megacities" led by Professor Chen Xiangsheng, the dean of our research institute, passed the completion inspection. The implementation level of the project was rated as "excellent". The project was jointly undertaken by Shenzhen University, Tsinghua University, Tongji University and Hunan University. The scientific research team conducted in-depth research on key scientific issues such as geological environmental effects of deep underground space, resilience design of deep underground structures throughout their life cycle, disaster mechanism and safety control caused by deep construction disturbances, and resilience assessment and enhancement of deep underground space. They constructed the basic theoretical framework of resilience for deep underground space in megacities. The project published 251 high-level papers, obtained 52 patents, published 12 monographs, won 4 provincial and ministerial first prizes, trained 16 national-level talents, held 9 international academic conferences, and significantly enhanced China's international influence in this field.

From the perspectives of the highest-level city work conference held by the central government on July 15, 2025, and the "Opinions of the Central Committee of the Communist Party of China and the State Council on Promoting the High-Quality Development of Cities" issued on August 15, 2025, the National Natural Science Foundation of China approved the project "Basic Theory for Resilience of Deep Underground Space in Megacities" for funding in early 2021. This is of extraordinary strategic foresight! This project focuses on the resilience of deep underground space in super large cities, conducting research on the failure and recovery mechanisms of deep underground space and their impact on urban functions, exploring the geological environmental effects of the development area of deep underground space in super large cities, revealing the degradation and recovery mechanisms of deep underground structures throughout their entire life cycle under complex service conditions, the coupling disaster mechanism between deep rock and soil bodies and engineering groups under the action of multiple disaster-causing factors, clarifying the mechanical behavior of deep underground space construction, and then establishing a resilience assessment theory from single structures to functional systems, and proposing methods for ensuring and enhancing the resilience of deep underground space. Finally, a resilience theory system for deep underground space in super large cities covering the four stages of planning, design, construction, and operation was formed, providing a solid scientific foundation and technical support for the safe development and resilience enhancement of underground space in super large cities in China. The research results have significant scientific guiding significance for ensuring the safety of super large cities in China, promoting sustainable urban development, especially in implementing the spirit of the Central City Work Conference and the "Opinions of the Central Committee of the Communist Party of China and the State Council on Promoting the High-Quality Development of Cities", and building a beautiful China.