"Grassland Development" Shield Machine arrived at Hohhot East Station

According to Liu Xiaodi, chief engineer of the China Railway 9th Bureau responsible for shield construction, the assembly and commissioning period of the “Prairie Development” shield machine takes approximately half a month, and it is expected to begin on the July 20th from the municipal government station on the west side. 2018 In March of the year arrived at the city government station. The shield section between Hohhot East Railway Station and the municipal government station is 1,700 meters in length. It is the longest shield section of the first phase of the entire Metro Line 1 project. At the same time, during the shield tunneling process, it is necessary to pass through the Donghe River landscape. Larger. “According to the construction plan, after the shield starts, it will continue to operate 24 hours a day and dig forward at a speed of about 15 meters per day. Due to the long shield distance, the quartz content in the soil layer is relatively large and the cutter head wears badly. When the excavation is approaching to the bank of Donghe River, it will open the warehouse to inspect the shield cutters, and if the wear is serious, it will be replaced and then dig forward again.The length of the river below the Donghe River is about 168 meters, and the top of the shield construction is away from the river bed. The bottom is about 13 meters, belonging to the safe range." Liu Gong introduced the author.