Modern Express News (Correspondent Yao Feng, Reporter Yang Xiaodong) On December 6, a Modern Express reporter learned from the Nanjing Municipal People's Air Defense Office that under the coordination of the Nanjing Municipal Urban Underground Space Development and Utilization Leading Group, the Nanjing Municipal People's Air Defense Office, Nanjing Municipal Planning and Natural Resources Bureau , Nanjing Municipal Urban and Rural Development Committee and other departments jointly organized the preparation and completion of the "Nanjing Underground Space Development Report" (hereinafter referred to as the "Report") and officially released.
The report shows that as of the end of 2020, the total underground space construction scale in Nanjing reached 71.9 million square meters, and the per capita underground space scale was 7.72 square meters. Many indicators are among the forefront in the country. Among them, as of the end of 2020, the construction scale of underground parking facilities in Nanjing was 45.9225 million square meters, and a total of 1.0884 million underground motor vehicle parking spaces were provided; the construction of underground road facilities showed a steady growth overall, with 46 road tunnels, with a total length of about 55.5 kilometers.
△ "Nanjing Underground Space Development Report"
The total scale of underground space construction in Nanjing has reached 71.9 million square meters
It is reported that the "Report" is mainly divided into four parts. It not only reviews and summarizes the scale and development trend of the time and space construction of underground space development in Nanjing, sorts out the development of the entire underground space industry, but also evaluates the characteristics and highlights of the underground space development in Nanjing, and looks forward to the development direction of underground space in Nanjing.
data shows that as of the end of 2020, the total scale of underground space construction in Nanjing reached 71.9 million square meters, and the per capita underground space scale was 7.72 square meters. Many indicators are among the forefront in the country. In recent years, the speed of underground space construction has become stable. While meeting the "incremental" needs of space, we pay more attention to the "quality" needs of space. In terms of vertical development, in recent years, the development and utilization of underground space in the central urban area has been widely used to the second floor of the underground, and some projects have used deeper underground space, such as: the fifth underground floor of the second phase of Deji Square (20 meters underground); the dungeon of the core area of Jiangbei is 7 underground floor (48 meters underground).
△ Note: Before 2015, the data came from the "Nanjing Urban Underground Space Development and Utilization Master Plan (2015~2030)". After 2016, the data after annual census was approved
reporters learned that the "Nanjing Urban Underground Space Development and Utilization Master Plan (2015~2030)" clearly defined the multi-center and networked overall structure of "four cities, eleven areas, and multiple points", and built a comprehensive development and utilization and protection system for underground space resources of "main city + sub-city + new city + new town". Taking the construction of the central urban area as an example, the total underground space development of Gulou , Xuanwu , Qinhuai , Jianye , Yuhuatai and Qixia six districts is 46.34 million square meters, accounting for 64.5% of the total underground space development in Nanjing.
In the planning and construction of key areas, the total underground space development in Xinjiekou area is 1.4 million square meters, with a development density of about 40%, and a balanced distribution. The underground space utilization form is mainly based on the basement of the building, and the dominant function is mainly underground parking, accounting for 68%; Jiangbei New District core area underground space is about 1.48 million square meters, with the deepest reaching 7 floors and 48 meters underground. The integrated public transportation network above and below will plan 4.8 million square meters of underground space in Jiangbei New City, and 4 subway lines will partially intersect in the underground space; the Nanxin City Daxiaochang Airport area is a key development area for underground space. Currently, it is mainly based on the construction of infrastructure such as rail transit and comprehensive pipeline corridors. There are 5 rail lines planned in the area, 10 transportation stations, and the current pipeline corridor is 17.8km, with a total planning of 21.0km.
Underground parking facilities construction provides a total of 1.0884 million parking spaces
The report also sorted out the construction of underground functional facilities in Nanjing. In terms of rail transit facilities construction, as of the end of 2020, Nanjing rail transit has opened and operated 10 lines, including 5 urban lines and 5 suburban lines, with a total mileage of about 378km. The coverage rate of 600m radius of rail stations in the old urban area reaches 75%, and the coverage rate of 800m radius of rail stations in the main urban area reaches 70%. The operating mileage ranks fifth in the country, the network density ranks third in the country, and Nanjing is the first city in the country to open subways in all districts under its jurisdiction.
In terms of underground road facilities construction, Nanjing has also maintained a stable overall growth trend. As of the end of 2020, there were 46 road tunnels in Nanjing, with a total length of about 55.5 kilometers, including cross-river tunnels, cross-river tunnels, cross-river tunnels, etc.
In terms of underground parking (motor vehicle) facilities construction, as of the end of 2020, the construction scale of underground parking facilities in Nanjing was 45.9225 million square meters, and a total of 1.0884 million underground motor vehicle parking spaces were provided. Not only that, Nanjing has also innovatively combined the construction of civil defense projects in the old city's green space, squares, school playgrounds and subway transfer centers, which combine peace and war with various functional facilities. It usually focuses on underground parking functions. While improving the city's comprehensive protection capabilities, it reduces parking traffic pressure in the old city. As of the end of 2020, the total number of self-built civil defense projects of Nanjing Municipal Civil Defense Office reached 480,000 square meters, and a total of 7,032 parking spaces can be provided, effectively alleviating the problem of parking difficulties in cities.
It is not difficult to see that the development of underground space in Nanjing is shifting from "quantity accumulation" to "quality normative". The comprehensive management system of is constantly optimized, the compilation of underground space planning continues to be improved, and the development and construction of various underground spaces is being carried out in an orderly manner, and an underground space development trend with six characteristics such as "large scale, high per capita" and "diversified industry development". Although Nanjing has huge development potential in future development, there are still certain challenges in balancing development in various districts, strengthening the construction of disaster prevention and mitigation facilities, and strengthening intelligent operation and maintenance.
The compilation of the report is the first attempt by Nanjing City. It can strengthen the public and industry practitioners' attention to underground space, so that it can have a deeper and more comprehensive understanding of the construction results and industry trends of Nanjing's underground space, and master the highlights of the development of various fields and industries in Nanjing's underground space. (Photo source: Nanjing Municipal People's Air Defense Office)
