The first phase of Nantong Rail Transit Line 2 is completed in the shield section between The Shanyuan Road station and the East Automobile Station

October 13 morning, along with "the cloud" 5 of shield machine to break out again, built by China railway 17 bureau and tongzhou total consortium bid construction of nantong first phase of the rail transit line no. 2, garden road station ~ east bus station station shield interval right line is smooth, become the first phase of the rail transit line no. 2, the second double line tunnel linking.

The shield tunneling section of The Shihulu Station to East Automobile Station has a total length of 569m and a roof depth of 9.62m ~ 11.64m. The section is tunneling along the middle Youth Road, and the tunnel goes under the Major risk sections such as Pugang River and Pugang River Bridge. With poor geological conditions and strong permeability, it is easy to generate sand flow and piping risks during the tunneling process. In front of the special geological nantong water rich sand layer, combined with the construction difficulties and key points of project department to sum up the experiences of the success of the construction of the left line and special plan formulation, optimization of the parameters, the control of shield posture, by increasing the L steel plate, embedded grouting hole and measures to ensure the safety of shield machine, rail company, supervision company attending key nodes of shield machine to conditions of acceptance, and check the acceptance standard to meet the construction requirements, receiving the presence of owner's representative, site supervision in the process of supervision and inspection acceptance, eventually achieving double penetration.