178 days!Suzhou Rail Transit Line 8 crosses Yangcheng Lake, and the "ring era" is closer

On September 1st, Suzhou Rail Transit Line 8 Jixue Road Station ~ The right line of the middle wind well interval is smoothly connected, which marks all the mission of the shield machine on Line 8, One step. This is also the second line of Suzhou after the S1 line.

Jixue Road Station ~ The intermediate wind well is one of the heavy difficulties in the construction of the entire line of Line 8. The interval is connected to Xiangcheng and Industrial Park, with a total length of 1.92 kilometers, of which the length of Yangcheng Lake is about 1.3 kilometers.

How difficult is this 1.3 kilometer construction? The relevant person in charge of the bidding section said that the maximum water depth of the interval was about 3.9 meters, and the minimum distance of the tunnel was 10.2 meters at the bottom of the lake. Because the at the bottom of the Yangcheng Lake lacked the clay layer of water separation and the development of the water system at the bottom of the lake, it was very easy to occur in the spiral machine gate. Leakage or spray. There are early exploration holes in the front of the line. Excessive grouting pressure when the shield is excavated.

In order to ensure the smooth progress of the shield, before the shield starting, the project department invited experts in the industry to repeatedly demonstrate the construction plan, innovative and transforming the lake shield machine, strengthen the anti -spray capacity and the sealing of the shield; adopt the "remote video video "Monitoring system", establish an effective information feedback mechanism. In order to ensure the precision of the shield inlet, the project uses dual -wire and gyroscope for directional measurement to achieve a long -distance tunnel inlet deviation of only 6mm; formulate emergency disposal process cards to enrich emergency materials reserves The use of drones and ships to inspect the water surface of Yangcheng Lake daily to ensure that emergency rescue work can be carried out in time and effective.

In the complex ground and lake bottom of the terrain and water systems, the project builders lasted for 178 days of hard work and completed the construction tasks of dual -line penetration.

At the same time, considering that Yangcheng Lake is an important water source protection place in Suzhou, the project will be the top priority in the construction of shield construction. Precisely control various technical parameters to ensure that the shield machine does not disturb the soil and soil at the bottom of the lake during the process of the shield machine, and the construction materials used will not affect the water quality and ecological environment of Yangcheng Lake.

Line 8 of Rail Transit started from Xijinqiao Station, mainly through Suzhou High -tech Zone, Gusu District, Xiangcheng District, and Suzhou Industrial Park to stop at Chefang Station. The line has 28 stations, with a total length of 35.5 kilometers. It is planned to be completed and operated in September 2024. It is the backbone line from northwest to southeast of the ancient city from northwest to southeast. It is also an intercity passenger flow distribution line. After completion, it will greatly improve the northern region of the ancient city.

After completion, Line 8 will be transferred to the same stage with Line 3 and Tangzhuang Station on the same stage. The online network will form a "combination ring" to create the "ring line era" of Suzhou rail transit. At that time, Suzhou citizens are more convenient to travel, effectively alleviate ground traffic pressure, and optimize urban space structures.

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Edit: Fu Xinxin

Editor in charge: Fan Bing

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Comprehensive: Suzhou releases Suzhou rail transit to see Suzhou

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