32 shield machines at the same time in Chengdu       

Advance the development of traffic

The subway that roars from the ground every day is a common means of transportation for everyone. And ten years ago, the subway was just a dream for Chengdu. From December 28, 2005, the Chengdu subway fog started to start the first line construction; this year, the new historical period of the Chengdu subway into the net, to accelerate the fast construction; to 2020, the city's rail transit to achieve full coverage, can reach the city metropolis and Paris, London, New York, Tokyo and other international comparable the level of public transport services, we expect to participate in, witness.

Mileage from 126 kilometers to 970 kilometers

The first half of the Chengdu Metro Line 3 will be opened in the second half of this year, when the framework of the basic line network of the "Mi" shaped subway will be formed. And ten years ago, the subway was just a dream for Chengdu. From "dream" to "dream", "old subway man" Yu Bo personally participated, the whole witness.

Yu Bo recalls that in the early morning of December 28, 2005, the fog in Chengdu was very low in visibility. "At that time, when we arrived at the South Third Ring station of the subway line 1 (now the present high tech station), we could not see the face in face to face." He went through the scene of the day. On this day, the first project of the Chengdu Metro - the first phase of line 1 was announced, and the new era of Chengdu's traffic - the subway era was announced.

At 3 p.m. in September 27, 2010, a landmark moment appeared in the history of Chengdu's urban construction. The first subway line, phase 1, was officially launched in the history of our city. "The mood of the day was very exciting, because it was the first subway line in Chengdu." Yu Bo said.

Line network constantly tightknit - September 16, 2012, line 2 phase opened; June 8, 2013, Metro Line 2 West line opened; October 26, 2014, line 2 East extension line opened; July 25, 2015, No. 1 South line extension line official trial operation; January 1, 2016, Metro Line 4 officially put into operation...... The opening of every subway line is a great traffic benefit for the citizens of Chengdu. The Chengdu Daily has carried out detailed reports in a large space, witnessing one by one.

"The development process of the Chengdu subway is a process of continuous optimization and dense weaving of a line network." Full participation in the city's rail transit network planning several encryption Yu Bo told reporters, Chengdu Metro Planning after several revision, mileage from 126 km to 970 km to expand the scale, a strong, a wide coverage of the 3rd Ring Rd within the extension to the two or three circle. "Especially by the 2016 edition of the new round of line network planning, the city rail traffic will not only achieve full coverage, but also realize the diversification and multi way, the city rail transit network scale of about 1730 km, including the city express, large capacity Metro City high speed railway."

A shield machine from 8 to 83

10 years ago, the Chengdu subway opened the first line; 10 years ago, Liu Gaofeng entered the Chengdu subway construction company. 10 years, the Chengdu subway line from construction to double with the construction, and then to the multi line now and built; 10 years, Liu Gaofeng took part in the construction of the Chengdu subway each line, has been engaged in the subway tunnel shield - Key Technology Management for the whole process of him, the Chengdu subway construction experience, the feeling is very deep.

10 years ago, Chengdu Metro Line 1 began to build. At that time, the use of shield technology for tunneling was a new thing for young subway companies. "Metro Line 1 shield construction is a huge challenge to the Chengdu subway at that time. Because of the unique geological characteristics of the water rich sand and pebble in Chengdu metro, there is no precedent in the world, and the shield method can be used in Chengdu. The outside world is skeptical. Experts at home and abroad are very worried. At that time, from shield machine selection, shield tunneling, shield tool changing and shield tunneling across structures, rivers and so on, for us, it is a huge difficulty which has never been encountered before. There is no experience to talk about, and we can only keep exploring in construction. Relying on "dare kenyinggutou" spirit, the shield construction of Chengdu special geological characteristics of finally getting better.

The increasingly severe traffic situation has made the construction of the subway accelerating. From single to double construction, with the construction, and then to the multi line today and, as the number of shield tunnel crossing is the largest contributor to the increasing - line 1, Chengdu subway station only 8 shield machine for operation; at present, the Chengdu subway has 32 sets of shield machine in operation at the same time; and by next year the construction of the peak, there will be 83 units in the shield machine.

Not only is the number of increasing, in the management means, the Chengdu subway has also introduced and applied advanced management technology. In Liu Gaofeng's office, he told reporters about the "Chengdu Metro" very alert observant and alert "safety risk management information system". A shield management page is opened. The key data such as the advancing speed of the shield machine and the speed of the cutter head can be clearly displayed on the computer. At the same time, the real-time working picture of each shield can also be seen on this computer. "In addition to see at the moment of the shield machine work screen, can also work at any time before the screen, all the computer automatic storage." In this system, the alarm function is also set up. As long as the abnormal working condition of the shield machine is abnormal, and the alarm standard is set up, the system will send out an early warning signal. In the construction of modern rail transit, we need not only the builders' selfless struggle, but also the effective technical means to achieve scientific management.

"This year is the year of the opening of the Chengdu subway into the construction of accelerated network construction, and is also the year for the large-scale speed up construction of the Chengdu subway. This year the northern section of metro line 18 (train station - Expo City Station), 6 line one or two, line 8, line 9, line 10 phase two period, a total of 6 projects have been started, line a total mileage of 187 kilometers; and No. 1 subway line three No. 3, line 123, line 4, line 5 phase two phase one or two, line 7, line 10 phase 6 line 7 construction projects, the construction of Metro in 2016 the total mileage of 376 kilometers, a record high. At the moment, the subway has become an important part of Chengdu's public transport, and many people like to choose subway travel. We hope that through our efforts, more citizens can enjoy the convenience of the subway. " Liu Gaofeng said.