How to build a highway in Gaoshan Canyon to build this live broadcast with netizens at home and abroad to feel the power of Chinese infrastructure

How many difficulties will a high -speed construction facing, and how much convenience will a high -speed building bring to the local area?

On June 30th, perceive the live broadcast of Chongqing · Aerial City Exit at home and abroad, and explore the city opening highway in the form of aerial photography. Chongqing International Communication Center foreign anchor James and Chinese anchor Tan Xiaoxue told the Grasson Extraordinary Grand Dacha through the camera. The construction of the bridge and city opening tunnel and Xuebao Mountain interoperable, with netizens at home and abroad to experience the power of Chinese infrastructure.

Aerial live broadcast site. Figure Conferry of Zhihui Bayang International News Center

The event was hosted by the Chongqing Municipal Party Committee Propaganda Department (Municipal Government News Office), the Municipal Education Commission, the Municipal Government Foreign Affairs Office, the Municipal Transportation Bureau, and organized by the Chongqing International Communication Center. The event performed a live video through the domestic video, and overseas live broadcasts were performed through the overseas Twitter and Facebook account of Zhihui.

A highway

Build a convenient way to build in the mountains and mountains

The mountains are high, the birds are difficult to cross, and the clouds are surrounded by the clouds. This is Daba Mountain, and it is also a natural barrier between Shaanxi, Sichuan and Chongqing. Located in Chengkou County, the hinterland of Daba Mountain, the average altitude is 2000-2500m. A 6-meter two-way two lanes are the only traffic artery here.

On December 27, 2016, the Kaishi Highway (Chengkou-Kaizhou) officially started. It will be built through the mountains and mountains, adding another convenient way to the city mouth.

The city opens highways. Figure Conferry of Zhihui Bayang International News Center

It is understood that the city -opening highway project started in Daba Mountain and Shaanxi and the country, and passed through the city of North Ping, County, Xunzi, Jiming, Xuebao Mountain, through the full moon, Dajin, hot springs, white cranes, and ends in Kaizhou District. Open the high -speed Zhao family. The total length of the line is about 128 kilometers, with a total investment of about 23.5 billion yuan. There are 11 hub -type interchange over the entire line, 63 bridges and 19 tunnels, of which 11 of the Bridge and 7 special tunnels.

"The city opening project is the most difficult highway in Chongqing to date. The highway construction characteristics such as high -speed bridge tunnel, complex geological terrain conditions, high safety risks, and difficult construction difficulties are integrated. It has important reference significance for the construction of my country's mountains and highways, "said the relevant person in charge of Chongqing Highway Group.

The city opens highways. Figure Conferry of Zhihui Bayang International News Center

A bridge

The use of the process in the country is the first time in the country

"Now show you the" Xunzi Bridge ", an important control project of the city, which is 330.812 meters in length, which is the first stop of the live broadcast of the steel box for the whole steel." It is located in the Grasson Thalang Bridge in Xunzi Township, Chengkou County. The arches on both sides of the bridge are located at the ridge, with steep terrain, and under the G347 National Highway under the side arch of the city. One of the problems in the construction process.

Grasson Bridge. Figure Conferry of Zhihui Bayang International News Center

It is understood that the construction of the Grasson Bridge will adopt a single -arch rib for vertical+flat+vertical rotation. This process will be the first time in the country. Lay the foundation. In the construction of the bridge, the construction party also vigorously promoted the use of BIM technology. This technology can simulate the construction of the whole process and provide accurate positioning coordinates for arch ribs assembly, rotation, and Helong.

In order to ensure the smooth traffic at the end of the year, the bridge is under construction. At present, the upper and lower turntables of the four arches on both sides of the bridge have been completed, and the ball hinge and vertical hinge have been installed. The fastening tower is under installation. The arch rib welding is now reinforced. It is expected that the dragon will be achieved in the air at the end of July or early August.

A tunnel

The longest highway tunnel in Chongqing

The second stop of the live broadcast is the city opening tunnel. This total length of about 11.5 kilometers is over a kilometer. It is the longest highway tunnel in Chongqing with a total investment of more than 1.5 billion yuan.

The tunnel crosses Xuebao Mountain. The engineering geology and hydrogeological conditions are extremely complicated. It integrates a variety of bad geology such as faults, crushing bands, rock -soluble, gas, rock explosion, and swallow water. It has high safety risks and difficult construction. In the face of these problems, how did the construction party solve?

Xuebaoshan interconnected navigation map. Figure Conferry of Zhihui Bayang International News Center

The city opening tunnel construction project is promoted "mechanized reduction and automation replacement", and adopts a three -arm rock -cutting car heavy equipment known as "pangolin". It used to be more than 20 people to complete. Now only 4 people are needed. And the efficiency is nearly doubled. At the same time, a multi -functional advanced geological drill is also adopted. Its drilling distance can reach about 150 meters, and the drilling speed is 10 to 15 meters per hour. It can accurately judge and prove the geology and tunnel surrounding rock level in advance.

City Kai Special Tunnel aerial photography. Figure Conferry of Zhihui Bayang International News Center

After more than 4 years of struggle, the construction personnel successfully crossed the 1337 -meter -deep tunnel through 7 fold structure bands, 6 broken layers of broken belt, and 22 coal seams. Sudden mud, 2 soft rocks large deformation, 4 rock explosions.

On March 31st this year, the city Kaishang Tunnel was fully opened. At present, all the main projects of the tunnel are completed, and the road surface construction has been transferred. It is expected to be opened to traffic at the end of July.

This live broadcast also took netizens to understand the most complicated Xuebao Mountain across the city's highway. The total length of the main bridge of the interoperability was 1292.5 meters.Above the cliffs, the project is close to the mountains and rushing rivers of the mountains and the rush of water.At present, the entire main bridge project of Xuebao Mountain has basically been completed.It is understood that at the end of July this year, the city opened the high -speed chicken to the Tanjia section of about 30 kilometers. It is expected to be opened to traffic. At the end of the year, the city opening high speed will be opened to Chengkou County to end the history of the city's incomparable high speed.

Source: Zhihui Bayang International News Center

Edit: Jiang Jinggu

- END -