Yanjiao subway joke

In the construction site of the comprehensive transportation hub project of Beijing City Sub-center Station, there are busy scenes and rumbling sounds of tower cranes everywhere. On the morning of August 5, the reporter visited the construction site of Bid Section 04 and learned that the construction of this bid section has started recently, and the epidemic prevention and control measures have been upgraded. In the future, the underground structure of this bid section will welcome the M22 subway line and the M 10 1 line.

The comprehensive transportation hub project of Beijing City Sub-central Station has four main sections, and some areas have entered the main structure construction at present. Bid 04 is located in the northwest of the whole project, and Beijing Municipal Construction Group, as the lead unit of the consortium, is responsible for the construction. At the entrance of the construction site, all outsiders must go through code scanning registration and temperature measurement before entering the site.

Walking into the construction site of the 2B foundation pit deep in the construction site, 100 many workers wore masks and worked orderly within a certain distance. In front are rows of steel bars. In the hot and muggy weather, the workers held welding torches and sparks flew everywhere. This is their daily work status these days.

"You see, although there are sparks at the scene, there is almost no smoke. This welding smoke collection system is indispensable. " Shi Yongjie, executive deputy manager of the First Division of the Project Management Department of Bid 04 Consortium (Beijing Municipal Construction Group), said. There is a silver pipeline above the steel bar, such as a range hood, which can "swallow" the smoke and dust generated by welding operation at any time to minimize air pollution. This environmental protection technology has been widely used in the comprehensive transportation hub project of Beijing Sub-central Station.

On the afternoon of August 4, more than 600 workers and managers were tested for nucleic acid, and all the results were negative. Shi Yongjie said that the epidemic prevention and control at the construction site has been upgraded in an all-round way, and the construction area, office area and living area are all under closed management. Project personnel can only flow in the designated area in an orderly manner, and nucleic acid testing will be carried out regularly; Those who come from Beijing or return to Beijing have to do nucleic acid testing, isolation and isolation before they can go to work. All laborers on the construction site have been vaccinated, and the project manager has been vaccinated except for three people who cannot be vaccinated because of high-risk diseases, which exceeds the average vaccination rate in Beijing.

It is understood that the main construction contents of the 04 bid section of the hub include foundation and foundation, main structure, architectural decoration, roofing engineering and so on. Among them, Beijing Municipal Construction Group is responsible for the construction of foundation pit 2b in bid section 04 of the hub, including underground space structure engineering, some station structure engineering of M22 line, and interval structure engineering of M 10 1 line, and the excavation depth is about 24.9 meters.

In the eyes of construction workers, this project can be called a "tough" bone. The foundation pit of Bid 04 is deep, large in area, high in groundwater level and high in water pressure, which puts forward high requirements for the construction of diaphragm wall waterproof curtain. The underground continuous wall is deep in trench and close to the existing subway line 6. The supporting structure in the railway core area is complex, and the construction is not only difficult and risky, but also requires higher accuracy. The construction team attached great importance to epidemic prevention and control and engineering construction, and made full preparations to overcome various difficulties in the project.

The comprehensive transportation hub of Beijing City Sub-center Station is located at the intersection of the "Belt and Axis" spatial structure of the city sub-center. It is a landmark project to promote the coordinated development of Beijing-Tianjin-Hebei, and will become the largest underground comprehensive transportation hub in Asia after completion. The transportation hub is the Beijing-Tangshan intercity railway originating from Tianjin Binhai New Area and other places.

It is also a large-scale underground hub with multi-level transportation such as intercity railway, suburban railway, urban rail, public transport and rental of private cars. The main transportation facilities of the hub are located underground, connecting M22, M 10 1 of M6 subway and three railway lines, namely Jingtang Line, Jingha Line and Intercity Line.

Effect map of comprehensive transportation hub of Beijing city sub-center station

The comprehensive transportation hub of Beijing City Sub-central Station will also form an underground hub and an above-ground city: the underground hub provides urban transportation functions and the above-ground city carries public activities. The ground is connected with the underground space through the sinking square and the shared space. The first underground floor meets the needs of citizens to enjoy leisure life, and the second underground floor provides the functions of rapid transfer and transportation connection of rail transit, introducing sunshine and natural wind into the underground space of the hub area, and creating a natural, comfortable and pleasant underground sunshine hub.

According to the latest data, the first phase of Beijing Metro 10 1 Line starts from Tongzhou Business Park Station in Tongzhou District in the west and ends at Xiao Gan Tang Station in the east, which mainly serves the new Tongzhou West Station, the sub-center station and the urban greening center. The future 10 1 line will also extend northward to Gaoxinzhuang Station in Chaoyang District; It will also extend eastward to Qigezhuang Station in Chaobai New City.

The total length of the line 10 1 is about 23km, including underground line 19.2km and overhead line 3.8km. According to government disclosure, Line 10 1 will be opened to traffic in 2023. It is expected to open to traffic to Qigezhuang Station before 2035.