Tunnel construction speed up!Shijiazhuang Metro Line No. 1 Phase II project first shield starting hair

As the huge knife set slowly started, the familiar shield construction scene appeared at the construction site of the Shijiazhuang subway tunnel project. At 9 am on June 18th, the first shield of Shijiazhuang Metro Line 1 of the second phase of the project was successfully launched at Dongshangze Station, which also marked the comprehensive speed up of the underground construction of the project.

The northern part of the second phase of Shijiazhuang Metro Line 1 is Fuze Station (excluding) ~ Toyo Station and Nanniu Parking Lot Project, which started construction on December 19, 2021. The current construction project mainly includes a three -kilometer line between one stop and two and Nanniu parking lots. The construction period is three years. It is planned to be opened to traffic by the end of 2024.

It is reported that Dongshangze Station, Toyo Station, Dongshangze Station to Toyo Station and Toyo Station and interval wind well projects are all undertaken by the 18th Bureau of China Railway. Liu Jinzhong, the person in charge of the project project, introduced that the first shield of the second phase of the northern part of Line 1 of the No. 1 Line 1 is the left -line shield from Dongshangze Station to Toyo Station. Digging into the direction.

Liu Jinzhong said: "Since the project entered last year, we have overcome difficulties. On the basis of the prevention and control of the epidemic, we plan in advance, inverted construction periods, scientific planning venues, and accelerate construction progress. After less than a month, we completed from from less than a month. The shield machine entered the field to the start, and successfully realized the key node of the construction of the northern part of Line 1 in the second phase of Line 1. "

According to Zhang Biao, the head of Shijiazhuang Metro Project Department of China Railway Eighteen Bureau, the starting point of Dongshangze Station to Toyo Station Tunnel from the east of Dongshangze Station and the south to north of Xincheng Street. The minimum plane curve is 700 meters and the maximum longitudinal slope is 28 ‰. The distribution of the soil layer is mainly loess powder clay layers, fine sand layers and powder clay layers. The distance between the distance is long, the slope is large, the curve radius is small, and the sand layer is the main. The risk of knife, knife discore, surface settlement, pipeline destruction, and sand in the dug of the shield machine during the excavation process.

In order to ensure the smooth excavation of the shield construction, the Municipal Rail Group and the construction unit have formulated effective management and construction plans. The Shijiazhuang Metro Project Department of the 18th Bureau of China Railway Construction organized a demonstration meeting to optimize the selection of shield machines. Shield machines with large power, good performance, anti -spraying function, harmful gas monitoring and other devices.

After the left -line shield is launched, the construction unit will strengthen monitoring information linkage at the scene. Mechanical and electrical technicians will be tracked on the equipment alliance around the weather to ensure that the shield equipment is running normally. While speeding up the progress of construction, we use lithium battery motor vehicles, flexible and practical pipe storage equipment, intelligent car wash platforms and other energy -saving and environmental protection equipment to do a good job of dust prevention and environmental protection work, green construction, civilized construction, and digging for shield machines smoothly. provide assurance.

At the same time, the right -line shield machine from Dongyangzawa Station to Toyo Station is also intensely conducting assembly and debugging. The assembly personnel check, repair, and debug each component and systems of the shield machine. According to the plan, after the left -line shield machine is excavated for 100 meters, the right shield machine will also be excavated. At that time, Dongyangze Station to Toyo Station will enter the state of dual -line excavation.

Since the construction of the project in December last year, the project has strictly managed on -site, strictly control the safety quality, focusing on key links and key difficulties, and effectively achieved science, civilization, and safe construction, and effectively accelerate construction progress. As of now, in addition to the tunnel from Dongshangze Station to Toyo Station, the tunnel of the Toyo Station has begun to dig in, Dongshangze Station ~ Toyo Station Division wind well has completed the construction of enclosure piles, vegetarian piles, crown beams, blocking wall pouring concrete, etc. Settings have completed the support of Sandao Steel. In addition, the construction of Toyo Station is also in full swing. The current surrounding piles and vegetarian pile construction have been completed.

At the ground 18 meters from the ground, the shield is roaring and digging, and the construction of the Shijiazhuang subway will continue to focus on improving the urban function, enhance the quality of the city, and in order to accelerate the construction of modern and internationalized provincial capitals, create proud of locals, foreigners, The city of yearning for charm is helpful!

Source | Shijiazhuang Daily

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