Recently, the Haiyan section of the Tongsu-Jiayong high-speed railway
Lot 9 of the land section of the project
In the territory of Haiyan Baibu Chaotong Village
Lay the 1,000th pile
For the follow-up large-scale substructure construction
Sufficient working surface is provided
It is understood
The land section of the project officially started in early September this year
At present, the construction progress is advancing by leaps and bounds
The length of the 9th section of the Tongsu Jiayong high-speed railway project is about 30 kilometers, starting from Yuxin Town, Nanhu District, Jiaxing City, and then passing through Wangdian Town, Xiuzhou District, Haiyan Baibu Economic Development Zone (Baibu Town), Shendang Town, Yucheng Town, Tongyuan Town, Wuyuan Street, and finally connecting with the Hangzhou Bay cross-sea railway bridge under construction, with a length of about 24 kilometers in Haiyan. There are a total of 8,661 piles in this section, and 4,400 are expected to be completed by the end of this year.
Route map of the 9th section of the Tongsu-Jiayong high-speed railway
At the pile foundation construction site in Chaotong Village, workers are operating the drilling rig and fighting for several hours. "The pile has a diameter of 1.5 meters and a pile length of 72 meters, and it took a total of 16 hours to complete." Liu Hong, chief engineer of the second division of the project department of the 9th bid section of the China Railway Seventh Bureau, said that the Sujiayong high-speed railway.
Liu Hong introduced that geological exploration found that the sea salt formation is mainly based on clay, silty clay and silt, which is soft in nature, and is prone to risks such as hole collapse and diameter reduction when drilling, so the special process is adopted. "We deliberately use a reverse circulation drilling rig suitable for the sea salt geology, and take measures such as reducing the drilling rate, increasing the specific gravity of the mud, and increasing the diameter of the drill bit to ensure the quality of the borehole." Liu Hong said.
At present, in addition to the pile foundation construction, 3 concrete mixing stations, 4 steel processing plants, and 27.6 kilometers of construction roads have been completed simultaneously, laying a solid foundation for subsequent larger-scale construction.
"We have invested a lot of manpower and material resources, including 52 drilling rigs alone, as well as cranes and excavators. All construction personnel implement 'three shifts', basically maintain 24-hour non-stop, and go all out to rush the construction period and catch up with the schedule. Wang Wenjun, deputy manager of the project department of the 9th bid section of the Sujiayong high-speed railway, said China Railway Seventh Bureau.
Renderings of the land section of the Haiyan section of the Tongsu-Jiayong high-speed rail project
After the opening of the Tongsu-Jiayong high-speed railway, it will be connected to the Yancheng-Nantong high-speed railway, Beijing-Shanghai high-speed railway, Shanghai-Kunming high-speed railway and other lines that have been put into operation, and open up the high-speed railway channel between Haiyan and the core urban agglomeration of the Yangtze River Delta, which is of great significance for integrating into the integrated high-quality development of the Yangtze River Delta. The railway is scheduled to be completed and opened to traffic by the end of 2027.
Source: Jiaxing release
Editor: Xiao Ran