Ningbo's rail transit has been in operation for nearly four years since its inception in 2009. The era of rail transit is approaching the city people at full speed, but for the general public, what you can feel at the moment is only the long construction wall! Behind the wall filled with reverie and anticipation in this way, let the Ningbo people look forward to the "underground long dragon" for many years, what kind of gorgeous transformation is being done? At present, the development and utilization of urban underground space and the future urban development are also hot topics. What is the use of underground space in countries around the world? On March 16th, Dean of Shanghai Tongji Joint-Underground Space Planning and Design Institute, deputy director and professor of Tongji University Underground Space Research Center, Mr. Shu Wei, who is deeply involved in the development and utilization of urban underground space, came to the city library. A lecture hall, for the people of Yucheng. As soon as he was seated, Professor Shu said that this year is his 40th year of studying and entering the underground building. He was a visiting scholar in Japan in 1989, and the harmonious scene of the coexistence and development of underground and old buildings in Tokyo, Osaka and other cities in Japan made him feel a huge impact. During his study abroad, he also cooperated with the Japan Underground Space Association. The topic of "Comparative Study on the Development and Utilization of Underground Space in Chinese and Japanese Cities". The first urban municipal pipeline dedicated corridor - the common ditch of Zhangyang Road in Shanghai, is the first scientific research result after Professor Shu returned to China. In the lecture of the day, Professor Shu also mentioned that as early as 2010, Ningbo City built the first “common ditch” in the province, which brought new hope to the intelligent management of the city's pipe network. The modern monitoring and management system of “Common Gully”, especially the technology that can detect water leakage, air leakage and electric leakage in the first time, is at the leading level in the world. Professor Shu also introduced Ningbo's current underground space usage with Ningbo's Eastern New City and Weinan Business District as examples. He said, "Ningbo has entered the 'quasi-extension' era." “Ningbo’s Metro Line 1 has been completed and has entered the stage of large-scale renovation.” Professor Shu emphasized that “now Yucheng has fully entered the construction phase of Metro Line 2.” When talking about the use of underground space in countries around the world, Professor Shu also confessed the gap between China and other countries in the world, especially Japan. "Japan has the technology to dig up to 135 meters, and Shanghai can dig it about 40 meters. And the subway in Japan is very modern! In China, The subway in Shanghai is still good, because the introduction of the latest technology, coupled with the long line of operation, and the accumulation of various experiences are more." Professor Shu also expects Ningbo's subway construction to be better than Shanghai. ● The term explains the common ditch: the urban underground pipeline integrated corridor, specifically refers to the construction of a tunnel space underground in the city, integrating municipal, electric power, communication, gas, water supply and drainage and other various pipelines, with a special inspection port, The hoisting and monitoring system will implement unified planning, design, construction and management, and completely change the chaos of each pipeline construction and management. When each pipeline needs to be opened, it is only necessary to notify the relevant responsible department and connect the interface, which is convenient for repair and saves the national resources. Editor's Note: In Les Miserables, the plot of Jon Agen's escape from the sewer line is unforgettable. It seems that the sewer pipe can be said to be a relatively primitive underground space facility. We also hope that the development and utilization of the underground space of Ningbo City will give off its dazzling brilliance. ●Incomplete underground inventory of Ningbo underground passage (opened on March 2, 2002) The first domestic cross-river tunnel project using pile foundation construction technology, firstly, a row of river bottom piles at the bottom of the Minjiang River. Then, a section of the pipe section is placed on the pile in order to ensure the stability of the tunnel. The total length of the tunnel is 3,266 meters, of which the section of the tunnel is 1,262 meters long, including 404 meters of the immersed section of the river. The successful implementation of this tunnel has pushed the level of tunnel construction in China to a new level. The underground passage of Yaoxing Street (used in December 2003) The first underground passage of the city, from Yaoxing Street to Kaiming Street. The passage area is about 900 square meters and there are 4 exits, namely Unicom Tianyi Square, Nanyuan Shoes City, Asiatic Mall and Chenghuang Temple. The underground passage of Rixin Street (commissioned in October 2004) from Zhongshan East Road to Rixin Street. The passage area is about 1000 square meters and there are 3 entrances and exits in a "T" shape. Unicom Tianyi Square, Second Department Store and Gome Electrical Appliances. The underground passage of the court lane (used in December 2006) From Zhongshan West Road to the entrance of the court, the passage area is about 800 square meters, which is a "C"-shaped structure, which is connected to the Tianning Building and Fan House respectively. This channel is designed to be "quasi" and corresponds to the antique house in the house. Taking into account the special coastal humid climate of Ningbo, the court entrance and exit also adopts a transparent design. ■ Introduction to the presenter: Shu Shu, Dean of Shanghai Tongji Joint-Underground Space Planning and Design Institute, Deputy Director and Professor of Tongji University Underground Space Research Center, Visiting Professor of Ritsumeikan University, Japan, and Construction Engineer of Royal Institute of Architects. Has long been engaged in the planning and development of urban underground space resources and disaster prevention management research and teaching. Participated in or hosted more than 30 research projects related to urban underground space at the national, provincial and municipal levels, and published more than 220 academic papers and 6 books. He studied as a senior visiting scholar of the Ministry of Education and studied at Tokyo Institute of Technology in Japan. He first opened the China-Japan-US Joint Study on the Impact of Underground Space Environment on Human Psychology and Subconsciousness, and represented China in the drafting and signing of the Tokyo Underground Space Declaration. The Times was named "2007 Person of the Year".