Qingfu Expressway Sangyuanzi Tunnel on the right line through the right line

On September 10, the Qingfu Titan Garden Tunnel, which was built by the Provincial Public Transport Construction Group, was invested and constructed by the Provincial Public Transport Construction Group. At this point, the dual -line tunnels are all connected, and the project construction has made significant breakthroughs.

Construction Site

According to reports, the Qingfu Highway is the first "5G+Smart Highway" demonstration project created by Gansu Province. Among them, the 8 -kilometer test section road network will support unmanned driving. The Qingfu Highway is an important part of the G312 line Shanghai to Horgos Highway. It starts with Qingshuiyi Township, Yuzhong County, and is connected to Line G312 Line and ends in Zhonghe Town, Lanlan County. 61 kilometers long, and the connection line of Lanzhou University is 1.9 kilometers simultaneously. After the road is opened to traffic, the Lanzhou Road Network will be improved to form Lanzhou Second Ring Road, promoting the Unicom of Yuzhong Ecological Innovation City and Lanzhou and Lanzhou New District to form a fast lane.

The Sangyuanzi Tunnel is located in Dashidong Village, Heping Town, Yuzhong County. It is a left -right separated rock and soil mixed tunnel. The design speed is 80 kilometers per hour is one of the control projects of the Qingfu project. The mixed tunnel, 1218 meters long on the left line and 1228 meters long on the right. The maximum buried depth of 150 meters, the surrounding rock is mainly V -Class; the landform area of ​​the tunnel site is loess and punching ditch. The terrain is large and the tunnel is obliquely penetrated. The geological conditions of the project are extremely complicated, the safety risks are high, and the construction organization is difficult.

Since the construction of Sangyuanzi Tunnel in September 2020, during the construction process, the project department has paid close attention to quality and safety management, paid close attention to important processes and key parts, repeatedly studied and demonstrated the construction plan, actively explored and introduced new equipment and new materials, focusing on autonomy autonomy Innovation and inventions are strictly carried out in strict accordance with the bilateral wall guide pits and one -sided wall guide pits to ensure construction safety and quality. During the project construction process, make full use of the informatization platform. In tunnel operations, a number of information systems such as personnel positioning system, air monitoring measurement data collection analysis and early warning system, access control system, and materials application system are adopted to create smart construction construction The project has taken a new step. At the same time, actively explore and introduce a number of new equipment and processes such as two -lining pouring pouring visual end templates, two -lining empty hole detectors, and high -end arched surface templates; independent innovation invented the arched foot protective sand boxes, drainage pipe positioning devices, etc. Innovative results. After the unremitting efforts of all participants to complete the dual -line penetration goals of the tunnel as scheduled, it laid a solid foundation for the successful completion of the annual construction goals, and also accumulated rich experience for the construction of the mixed tunnel construction of the large broken surface.

Lanzhou Daily All Media Reporter Tan Ansi

Source: Lanzhou Evening News (copyright belongs to the original author, if there is any infringement, please contact delete)

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