The first shield of the west yanshunde section of guangzhou rail transit line 7 is completed

Guangzhou rail transit line 7 phase I project west yanshunde section ushered in a historic moment! On May 5, the shield tunneling machine on the marked right line broke through the ground, marking the smooth connection of the shield tunneling between chencun and chencun stations. The construction of the shunde section of the west extension of line 7 has achieved phased results!

On May 5, the shield tunneling machine on the right line 1736 between chencun and chencun north railway station area was successfully completed under the joint witness of shunde section of the first phase of guangzhou rail transit line 7 under the joint witness of shunde section of the first phase of guangzhou rail transit line 7.

Chencun ~ chencun BeiZhan District right between the 1.3 km line tunnel, overall design for the tunnel hole singleline tunnel, tunnel geological volatile compound formation, hard and soft surrounding rock changes frequently, maximum depth of 25.5 meters, the groundwater is rich, the wear ring guangfo intercity railway Wu Jiawei village, under Ming dig interval, wear the architectural structures, such as west guangzhou-zhuhai high-speed construction is sensitive to the surface and in the process of building settlement, security risk is high, the driving is difficult.

Since the construction of the chencun ~ chencun north railway station tunnel started in April 2018, the bid project department, under the guidance and coordination of shunguang company, has overcome many construction difficulties, such as shield tunneling control of composite strata, subsidence control of surface structures and pressure tool change.

The project department always adheres to the core of safety technology disclosure, education and training, and on the basis of strengthening process control and optimizing construction scheme, strengthening the monitoring of shield attitude and surface settlement, careful deployment and scientific arrangement. It is worth mentioning that the application of the inter-shield construction in chencun ~ chencun north railway station is a dual-mode shield tunneling machine independently developed by China tunnel construction, which ensures the safe and stable tunneling of the shield tunneling machine, and finally realizes the accurate arrival of the tunnel with zero accidents.

The smooth connection of the shield tunneling between chencun station and chencun north station area is a great encouragement to both the shunguang company and all sections of the shunde section on the west side of line 7. As the first intersecting shield section of shunde section of line 7, it has accumulated valuable experience for shield construction of the whole line.

Next, shunguang company will continue to lead the project departments of the no.7 west yanshunde section to summarize the construction experience in time, keep the momentum, and complete the construction tasks successfully, and make unremitting efforts to promote the smooth construction of the no.7 west yanshunde section.