In 1833, the world's first comprehensive pipe gallery was born in Paris, France. Since then, the integrated pipe gallery has been widely used in Paris. Today, the city and suburbs of Paris have built 2400 kilometers of comprehensive pipe gallery, ranking the first in the world. According to the implementation opinions of the general office of Chengdu Municipal People's Government on strengthening the construction of urban underground comprehensive corridor, Chengdu will build a modern new urbanization comprehensive corridor system featuring "domestic demonstration, leading the west, multi-level and networking".
How to promote the construction of modern and new-type comprehensive urban corridor system in Chengdu? Chengdu quansearch news network reporter interviewed Chen Shunzhi, deputy director of Chengdu urban and Rural Development Commission, and Zhong Xiang, President of Chengdu Municipal Engineering Design and Research Institute.
At present, the underground comprehensive pipe gallery of Dayuan group in high tech Zone has been built
Underground comprehensive pipe gallery refers to the public tunnel used for centralized laying of municipal pipelines such as electric power, communication, radio and television, water supply, drainage, heat, gas, etc. in the urban underground. "The construction of urban underground comprehensive pipe gallery is equivalent to the construction of an underground 'Expressway'. As long as the pipelines and aerial cables are laid underground in the city, they must pass through the pipe gallery." Chen Shunzhi explained to reporters the definition of comprehensive management gallery.
"At present, the underground comprehensive pipe gallery of Dayuan group of high tech Zone has been built in our city." Chen Shunzhi told reporters that the underground pipe gallery is located under the middle ring road of Dayuan, which is jointly built with the underground ring road of Dayuan. The underground first floor is the underground Ring Road, and the underground second floor is equipped with the underground comprehensive pipe gallery. The branch line extends to each plot, forming the underground comprehensive pipe gallery system of Ring + branch line, with a total length of about 3km. It contains water supply, power, communication, regeneration water, condensate and other pipelines.
It is reported that in terms of scale, the underground comprehensive pipeline in our city can be divided into four categories: trunk underground comprehensive pipeline Gallery, branch underground comprehensive pipeline Gallery, cable pipeline gallery and micro pipeline gallery. The main line pipe gallery can be "open to traffic", that is to say, the maintenance lane is designed for the use of professional vehicles for internal detection, maintenance and construction of the pipe gallery.
The total length of the city's planned comprehensive pipe gallery is about 1084 km
"In the process of construction, Chengdu's underground comprehensive pipe gallery has always paid attention to adjusting measures to local conditions and making innovation and breakthroughs. At present, Chengdu's characteristics in construction have been formed." Chen Shunzhi told reporters that in order to build a comprehensive pipe gallery featuring "domestic demonstration and leading the west", Chengdu has formed six characteristics in the construction of underground pipe gallery.
In terms of technical specifications, in promoting the construction of underground comprehensive pipe gallery, Chengdu strictly follows the national technical specifications, fully considers the new and old urban areas, geographical conditions, road sections and other factors, and implements differential index control. In the old urban area and municipal roads, the expansion project focuses on the selection of "small comprehensive pipe gallery", "micro pipe gallery" and "cable pipe gallery", aiming to reflect the adaptability and economic rationality of the old urban area, and reasonably layout the form of small comprehensive pipe gallery. "For example, in the reconstruction project of the first ring road of Chengdu to be reconstructed, micro and cable pipe gallery are planned to be set on both sides of the road, and the access pipeline is Electricity, communication and water distribution. " For the new road project in the new area, the "large and medium-sized comprehensive pipe gallery" is mainly selected in combination with the municipal corridor of the main line, and other types of pipe gallery are taken as effective supplements to reflect the high standard, scientificity and modernization of the new area. In Chengdu's "eastward" area, the comprehensive pipeline corridor of the south line of the airport should be built, which includes high-voltage power, low-voltage power, communication, gas, transmission and distribution pipes, etc.
From the aspect of planning and design, the principles of appropriate size, combination of depth and depth, and order of separation and integration are put forward, forming a construction standard in line with the actual situation, and enhancing the scientificity of pipe gallery construction; from the aspect of construction implementation, according to the concept of "overall planning" of building a chess game in the whole city, combining the construction of new area, old city reconstruction, municipal engineering, river reconstruction and expansion, and rail transit, the pipe gallery construction is implemented simultaneously Avoid repeated excavation.
"Vigorously promoting industrial construction is also an extremely important aspect." Zhong Xiang said, "at present, many pipe galleries in Chengdu have adopted industrial prefabrication and assembly and trenchless technology to construct underground comprehensive pipe galleries." Taking the underground comprehensive pipe gallery of Riyue Avenue as an example, the total length of the pipe gallery is about 5.5km, and the length of the industrial prefabricated assembly section is about 1.7km. "Through the main body of the industrial prefabricated pipe gallery, the construction quality and efficiency are greatly improved, the construction period is shortened, the environment and noise pollution caused by the construction are reduced, the comprehensive construction cost of the underground comprehensive pipe gallery is greatly reduced, and the impact of traffic organization is reduced."
"The construction of urban underground comprehensive pipe gallery and underground pipeline intelligent management system is the last and very important point." Zhong Xiang told reporters that the intelligent management system is to build an intelligent management platform to integrate monitoring hardware, BIM, big data analysis and other means to ensure the efficiency and stability of the operation and maintenance of the tunnel. "For example, the inspection robot and intelligent sensor of the pipe gallery can inspect and detect the" physical condition "of the pipe gallery all day long. When finding" physical discomfort ", immediately send a help signal to the management personnel to ask for" medical treatment "to avoid the occurrence of pipeline accidents. At the same time, the management personnel will also use Bim and big data analysis and other technologies to simulate the operation state of the pipe gallery through the three-dimensional visual management interface, so as to predict the possible failure of the pipe gallery and prevent it from happening in the future. "
According to the reporter of Chengdu full search news network, at present, the relevant departments of Chengdu are stepping up the revision of the special plan for the underground comprehensive pipe gallery, in accordance with the principle of "full coverage"
