According to news from the Shenzhen Xili Comprehensive Hub Metro Line 15 section project on the 3rd, the first base slab of this section was successfully poured recently, marking that this section of the line has officially entered the main structure construction stage, opening up an important working face for the cross-built and coordinated construction of the hub's national railway and metro.

　　The newly built Shenzhen Xili Station is located in the north-central part of Nanshan District, Shenzhen, covering an area of about 189 hectares with a total construction area of 914,400 square meters. Its core construction content is "one station, multiple yards and one platform," including a 13-platform, 25-track main station yard, east and west station squares, an integrated transfer platform above the station, and a supporting rolling stock depot, along with synchronized construction of rail transit, municipal, commercial and other related facilities. The project is China's first green ecological park built above a high-speed railway station and also a national-level TOD demonstration project for station-city integration. Once completed, it will form a multi-level three-dimensional rail transit network of "4 high-speed railways + 2 intercity railways + 4 metro lines," driving an overall capacity increase of about 40% for Shenzhen's railway passenger transport and achieving "1-hour accessibility" among cities in the Greater Bay Area. It is of far-reaching significance for improving the comprehensive transportation layout of the Guangdong-Hong Kong-Macao Greater Bay Area and empowering high-quality regional development.

　　According to the introduction, the Xili Comprehensive Hub Metro Line 15 section is constructed and managed by Xiamen-Shenzhen Railway Guangdong Co., Ltd. and undertaken by China Railway Seventh Group Co., Ltd. The agent-construction project of the Xili Comprehensive Hub Metro Line 15 section in Section 3 of the Shenzhen Xili Station project of China Railway Seventh Group is located beneath the national railway station building, with a total length of 417.1 meters. It adopts an overall single-story concrete frame structure, and the maximum excavation depth of the foundation pit reaches 30.83 meters. The construction volume is large, safety risks are high, and geological conditions are complex.

　　It is worth mentioning that this base slab pouring coincided with Shenzhen's rainy season, with high temperatures, abundant rain and changeable weather, further increasing the difficulty of construction organization. To fully address the risks of rainy-season construction, the project team deployed in advance and planned scientifically, improved the foundation pit interception and drainage system, increased the frequency of slope monitoring, dynamically assessed foundation pit stability, and implemented various protective measures in detail to ensure the smooth completion of the base slab pouring.

　　It is understood that, as the core foundation structure beneath the metro tunnel, the completion of this section's base slab construction has thoroughly opened up the passage for subsequent main structure construction of the metro section, effectively accelerating the project construction pace. At the same time, it has created prerequisite construction conditions for the construction of the national railway station building above, effectively solving the problem of mutual constraints in cross-operation between the national railway and metro, achieving process connection and efficient coordinated advancement of the two major construction sections, and laying a solid foundation for the overall construction of the hub.

　Source: China News Service