Completion acceptance of the first section of phase I and phase II of line 18 of “East first line”

No load trial operation of

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Metro Line 18

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the first and second phase project of

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of line 18 is provided by Chengdu rail group. It starts from South Railway Station and ends at terminal 1 and 2 of Tianfu airport. The total length of the line is about 69.39 km

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. The length of the first section is about 55.95 km

● including 8 underground stations, 1 elevated station, 1 depot, 2 main substations

on August 26, Chengdu Municipal Bureau of housing and urban rural development (Metro Office) held the (Preliminary) completion acceptance meeting of the first section of Chengdu rail transit line 18 phase I and phase II, which marks the (Preliminary) completion acceptance of the first section of Chengdu metro line 18 phase I and phase II!

Chengdu rail transit line 18 is the first aorta of Chengdu’s “eastward” strategy. The line connects the main urban area, Tianfu new area, Eastern New Area and Tianfu International Airport for the first time. It is of great significance to optimize the overall layout of Chengdu’s “eastward” transportation network, boost the construction of double city economic circle in Chengdu Chongqing district and the development of Chengdu, Dezhou and Meishan. At the same time, it is also the first urban express line to enter the central urban area in China, which is of great milestone significance for improving the backbone network of Chengdu rail transit, realizing the “30 minute Chengdu rail transit circle” and forming the “one hour Chengdu rail transit life circle”. In fact, line 18 is not only of great significance to the city, but also has many breakthroughs and innovations in the construction process. According to the relevant person in charge of Chengdu Municipal Bureau of housing and urban rural development (Chengdu rail Office), Chengdu rail transit line 18 has remarkable characteristics in design, construction and management.

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are first of all new management modes. Line 18 is the first urban rail transit PPP project in Chengdu. The project implementation and management cover the whole life cycle of investment, design, construction and operation. On the other hand, line 18 has the characteristics of long construction mileage. The total length of line 18 is 69.39 km, which is the most rail transit line under construction in China, and also the airport special line of great wall rail transit under construction in China. In terms of the design standards of

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, line 18 is the first urban rail transit line in China with a design maximum speed of 160 km / h. for the first time, many new technologies have been applied, such as AC 25kV overhead suspension catenary power supply, domestic highest speed train ground wireless communication, the first use of urban express line A-type vehicle in China, and the first application of “new vehicle pressure wave control technology based on road spectrum”. The construction of

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line 18 has also experienced special difficulties such as multiple construction risk sources. The person in charge said that the first section of line 18 has conquered 206 major and extraordinarily dangerous sources. Among them, Longquanshan tunnel is 9.7km long, the highest gassy long tunnel in China’s urban rail transit, which is very rare in China’s urban rail transit. The long shield interval and large shield diameter are also major challenges for the construction. A total of 16 8.6 m large diameter shield machines have been put into the first section of line 18, with the daily maximum excavation of 28.8 meters and the maximum monthly excavation of 452.5 meters, which has set a new record of the tunneling speed of large-diameter shield machines in China.

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in addition, line 18 has initiated the organization mode of mixed fast and slow trains and running on the same line in China. The person in charge said that line 18 is an express line serving the urban area of Chengdu and Tianfu International Airport. It is the first compound line in China that has both urban functions, composite passenger flow and mixed operation of fast and slow trains. “This also forms a set of Chengdu standards for rail transit industry with unique Chengdu characteristics and cross era significance.”.

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of Chengdu Commercial News Red Star News reporter