Wuhan's "fastest running" subway accelerates the construction of the eastern rail network of the city

Recently, a number of Jie reports came from Wuhan Metro Line 19. The "shield machine knife plate broke the hole from the left tunnel, which marked the dual -line penetration of the line interval of the entry and exit section of the Huashan vehicle section.

After 263 days, I put down 1.3 kilometers of mud rock

The line interval of the entry and exit section of the Huashan vehicle section starts from the Ming Digun Run. On September 11th, the "Huashan" shield machine successfully crossed the complex strata after 263 days.

The "Huashan” "shield machine knife is broken, and the left tunnel of the entrance section of the Huashan vehicle section 19 is smoothly connected. Correspondent Yuan Yonghua Photo

According to Tang Yong, the owner of the Wuhan Metro Group's construction business headquarters, due to the complexity of the strata, in order to ensure the safety of the shield's excavation, the project department regards the risk identification of the interval tunnel as an important content. Risk disposal measures.

"Especially when the upper -side tunnel is on the upper -line tunnel, the project department optimizes the construction plan of the stack section. It uses a hydraulic top to push the mobile steel arch vehicle to support the reinforcement process and new technologies. The construction team implements 24 hours of special personnel and completes the construction tasks 70 days in advance. "Tang Yong said.

According to Yu Shoulong, the manager of the 4th standard shield construction work area of ​​Line 19 Line 19 of Wuhan Municipal Construction Group Co., Ltd. The registration party can pass.

Inside the tunnel, the QR code of the excavation information is pasted, and the excavation information of the tube can be understood for the first time; gas testing the tunnel assembly area daily to ensure that there is no harmful gas in the tunnel.

Optimize the starting process of the shield to save 15 days

On September 8th, on the 4th of the Hualhanhe Station-Optics Valley Wulu Station Division of Line 19, the shield machine of the "Inconsiste" was successfully started, and it will follow Huashan Avenue to the south and the High-tech Avenue Shield Well. The range is 1291 meters in length, and the shield machine will penetrate all kinds of pipelines such as electricity, gas, tap water, rainwater, sewage, high -tech avenue comprehensive pipe galleries.

Wang Xiangyuan, the second -level project manager of the Wuhan Metro Group's construction business headquarters, introduced that the biggest difficulty of the departure is 31 meters long, but the "Zhiyin" shield machine is about 120 meters in length. The constructor starting scheme, according to previous experience, the average dug speed of the first 80 ring is only 3 rings per day.

"In order to improve the efficiency, the project department makes full use of the mines of No. 3 to 4 vertical well section mining tunnel to adjust the shield dregs and pipes during the starting stage to the No. 3 well. The problem of insufficient space. "Wang Xiangyuan said, it is expected to save about 15 days as a whole.

The "fastest running" subway accelerates the construction of the eastern rail network of the city

Line 19 lines directional diagram.

According to Jiang Fan, the first -level project manager of the Wuhan Metro Group Construction Division, the Metro Line 19 is the city express line in the Wuhan Rail Transit Line Network. Stand 7.

At present, the three main structures of the seven stations have been completed; 12 shields have 12, of which 4 are connected and 8 are being excavated; there are 6 single -line interval of mining method, 4 of which, and 2 are being excavated.

The highest running speed of Line 19 was 120 kilometers/h in the early stage, and the reserved conditions were reserved to 140 km/h. It is one of the "fastest running" subway in Wuhan. This line passes 4 districts through Hongshan District, Qingshan District, Donghu Scenic Area, and Donghu High -tech Zone. After opening to traffic, it will effectively improve the ability to collect and distribute the distribution of Wuhan Station, airport hubs, strengthen the accessability of the Guanggu and regions along the route, and build the orbit of the eastern city of the city. Net fast channel.

(Changjiang Daily reporter Tao Changning correspondent Zeng Si Yuan Yonghua)

【Edit: Zhao Ke】

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