On August 12, 2021, the key rail transit project of Yunnan Province, which is built by the China Railway 18th Bureau, runs through Kunming's main urban area, and the track laying operation is about to start in full swing.

Kunming Rail Transit Line 5

Kunming Rail Transit Line 5 has a total length of 26.45 kilometers. It is the backbone of Kunming Rail Transit Network and the first natural ecological landscape line in Yunnan Province. The route passes through Panlong District, Wuhua District, Xishan District, Resort and Guandu District, connecting Kunming World Expo Park, Dianchi Lake and Green Lake and many other scenic spots with the most natural landscape and gardens, with 22 stations in total, are one of the key projects of Yunnan Province’s "14th Five-Year Plan" period to build the central Yunnan urban agglomeration strategy on the track .

Kunming Rail Transit Line 5 Project Cuiwu Left Line

The interval between Yuantong Park Station and Cuihu Station, which the group company is responsible for construction, is the most difficult shield tunneling interval on the whole line. Facing the complex geological conditions of multi-water stratum, karst development, and hard rock formations, the project department set up a tough team to continuously optimize the technical plan, adopt the water-injection ring and innovative application of the filling method to create strong conditions for opening and changing tools, and Thousands of monitoring points have been set up along the shield section to monitor and adjust the tunneling parameters of above-ground buildings, roads and shield machines in real time, successfully overcoming the construction problem of "changing tools in water-rich rock formations" and ensuring the safety of shield machines Digging.

In order to speed up the construction progress, the project department optimized the construction organization, strengthened the allocation of resources, and solved the narrow problem of the construction site. During the peak period, 4 shield machines were tunneled at the same time, creating a record of 31.2 meters of shield tunneling in a single day. Carrying out activities such as the Hundred Days War, labor competitions, pioneering and striving for excellence, quickly set off a climax of the big team, and fully promoted the construction of the project.

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It is understood that after the project is opened to traffic, it can be transferred directly to Changshui Airport, Kunming South High-speed Railway Station, Kunming Railway Station, Kunming Dianchi International Convention and Exhibition Center. Mountains, green lakes, Dianchi Lake and many other scenic spots with the most beautiful landscapes and gardens and natural features have injected new vitality into the development of cultural tourism along the route, and are of specific significance for optimizing the urban ecological environment, expanding the scale of the city, and improving the quality of the city. Editor/He Yuting