Video ｜ The construction of the Nanchang Metro Construction is pioneering -the first overlap tunnel shield machine "Yuzhang 1" successfully started

Jiangnan Metropolis News reporter Zhang Na Photography reported: "We have started!" On the morning of September 23, Line 1 of Line 1 of the China Railway 1 Urban Rail Company — Jianye Avenue West Station (split The "Yuzhang No. 1" shield machine on the right line of the interval was successfully launched. This interval is the first small nets in Nanchang Metro overlapping up and down tunnels, creating a precedent for construction of Nanchang Metro.

According to Liu Xiaochun, the project manager of the Northern Extension 01 of the China Railway No. 1 Urban Rail Company, Liu Xiaochun, the project manager of the North Extension 01 Standard 1 of the Gong District, Beishan Station -Jianye Avenue West Station (split well) Shield range is 720 meters long, and the pipe ring width is 1.2 Mi, set up 1 link channel, invest in 1 6 -meter shield machine to dig until the split work well receives and transfer to Beishan Station to start the second time. "Our entire shield construction project is about 1440 meters. Since the tunnel is parallel out of Beishan Station, the 220kV high -voltage tower, and the urban guidance canal two times in turn. The split work well is received, so it is the first overlapping tunnel in the construction of the Nanchang Metro Shield. The minimum overlap net distance is only 2.7m. The interval construction is difficult and the safety risks are high. " The system combed construction risks and difficulties, and conducted multiple demonstrations and optimizations of the shield construction plan and emergency plan. At the same time, the shield equipment was accepted. Stable and efficient excavation provides solid guarantees. After this successful start, it is planned to dig for about 15 meters per day to strive to achieve the right line through the end of the year.

This time, the right -line shield construction of Beishan Station of Nanchang Line 1 — Jianye Avenue West Railway Station (split well). The shield machine used is "Yuzhang No. 1", which realizes the construction of Nanchang Metro Shield Construction "Nanchang made" and "Nanchang", Liu Xiaochun introduced that the visual function of the shield machine "Yuzhang 1" made the tunnel construction more convenient, safe and efficient.

For many difficulties such as minimal radius segments, penetrating rivers and oil pipelines, small net distance overlapping tunnels, the project department will continue to do a good job of shield construction management, compact work responsibilities, keep an eye on node goals, anchor the target, efficient efficiency, efficient Coordinate, strengthen safety and quality control, use information construction methods, seize the golden construction period of autumn, and strive to achieve interval early through to ensure the smooth completion of the annual task goals.

Editor on duty: Zhou Zhangyun

Duty review: Jinlu Yao

Editor -in -chief: Huang Lianwen

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