Boring 316 meters! The first section of the shield tunnel of the Wanjiali North Extension Power Tunnel has passed through.
Release Time:
2021-02-05 18:08
Source:
At 20:23 on January 30th, in the No.3 exit shaft of Wanjiali Road Rapid Transformation North Extension (including Power Tunnel) Project, with the 13# shield machine cutter of China Railway Shanhe slowly cutting the piles of the enclosing structure, the 13# shield machine cutter appeared in the line of sight, and the first section of the tunnel of Wanjiali Power Tunnel Project was successfully passed through.
The shield section of Wanjiali Power Tunnel is the first construction project undertaken by China Railway Shanhe, and it adopts three sets of shield machines to carry out boring construction. The shield section has a total length of 5 kilometers and is divided into 7 segments, and this time the first segment of 13# shield machine was passed through.
Due to the size limitation of the starting shaft, the shield structure of this project needs to take separate starting, and all the carts need to be dismantled and loaded three times in order to go down the shaft, which makes the construction organization very difficult. During the tunnel boring process, the tunnel continuously crosses the bridge pile foundation of Xingsha Liaison Line at a close distance, the nearest place is less than 3 meters away from the pile foundation, and also crosses the gas and other municipal pipelines for many times, which makes the construction difficult and the risk of safety is high. The complex geological conditions encountered during construction and the abundance of underground water further increased the construction difficulty.
In order to implement the guiding spirit of Chairman He Qinghua “to make the construction segment stronger, better and bigger as an important business”, all the staff of CRSR strive for excellence and create excellence, give full play to the leading role of the Party Vanguard and the youth commando team, overcome one difficulty after another, and finally ushered in the smooth passage of the first section of the power tunnel.
China Railway Shanhe's first success in the construction sector marks the company's realization of the development of the whole industrial chain of shield tunnelling equipment research and development, manufacturing, leasing and construction.
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