The subway participating in the construction of the second bureau of China Railway was opened to operation

On June 18, the China Railway Second Bureau participated in construction

The second phase of Chongqing Rail Transit Line 4 is officially opened for operation

It marks the second bureau of China Railway in Chongqing

The first TBM tunnel project was perfectly ended

Chongqing Rail Transit Line 4 is an important line for Chongqing to complete the "eight lines and one ring" basic network construction of urban rail transit. After opening to traffic, the two major areas of fish Fu Fu and Longxing in Liangjiang New District will be connected to the Tangjiabang Industrial Park, Yufu Industrial Park and Longxing Industrial Park promoted the linkage development of peripheral groups such as Tangjiabu, Yufu, Longxing, Yuelai, and the central urban area.

Chongqing Rail Transit Line 4 Phase II engineering line is about 32.8 kilometers in length, with 15 stations on the entire line. The China Railway Second Bureau undertakes the entire rail pre -production and laying construction production tasks. In addition, it has also undertaken projects on the longest Tieshanping Station ~ Ganba Station TBM Tunnel.

Based on the characteristics and difficulties of the project, China Railway Second Bureau chose to use the mid -range spiral single -shield dual mode composite TBM on the second phase of the second phase of the Chongqing Metro Line 4, which can meet the possible pressure preservation and excavation of the shallow burial section, and the demand for soil improvement. It can also meet the demand for high -speed rotation and efficient slag of the blade of the full -fledged rock dug in the full -fledged rock section, and through multiple optimization measures to ensure the high -efficiency tunnel tunnel of the tunnel. The second bureau of China Railway created a single TBM monthly excavation of a maximum of 520 meters in construction, ensuring that the construction targets were completed on schedule.

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