The shield machine of the Yellow River Tunnel of t

2022-07-25
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The shield machine of the Yellow River Tunnel of the South-to-North Water Transfer Project "rushes" through the main river channel

the shield machine of the Yellow River Tunnel of the South-to-North Water Transfer Project "rushes" through the main river channel

information on China's construction machinery

Guide: the manipulator of the South-to-North Water Transfer Project reversed the pipe pieces. On February 21, the melodious and deafening sound of firecrackers sounded again at the Yellow River Crossing site of the middle route of the South-to-North Water Transfer Project of China Railway Construction 16th Bureau Group. At this time, the staff cheered and announced that the shield machine had successfully rushed through the main river, and finally the rebellious black dragon of the past two years

the manipulator of the South-to-North water transfer pipe piece

on February 21, the melodious and deafening sound of firecrackers sounded again at the Yellow River Crossing site of the middle route of the South-to-North Water Transfer Project of China Railway Construction and China Railway 16th Bureau Group. At this time, the staff cheered and announced that the shield machine had successfully rushed through the main river, and finally left the rebellious "green dragon" behind

yangliting, deputy manager of the project department, who could not suppress his excitement on the site, said: "this breakthrough in the construction period of this major node is a substantive victory for us to do intelligent manufacturing of all enterprises through the Yellow River tunnel." After calming down a little, deputy manager Yang said: "after crossing the main river channel, the shield machine enters the beach on the south bank, and the offshore shaft has a driving distance of about 160 meters. This distance is mainly in the loamy soil layer. The soil permeability is poor, the water level is low, and the water pressure is relatively small, so the shield machine enters the relatively safe geological layer."

the main channel of the Yellow River is about 600m wide. The riverbed is mainly built by the scouring and stacking of the river for thousands of years. The geology is extremely complex, and various geological layers cross repeatedly. Ancient dead trees and boulders larger than 50cm often appear, and hard objects such as iron are occasionally seen. In addition, the pressure of the suspended river overhead brings many difficulties to the shield tunneling. The Yellow River Crossing Project Department of China Railway Construction 16th Bureau Group, which undertakes the construction task, has always adhered to the principle of technological innovation as the first waste plastic cleaning. At present, it generally adopts manual cleaning or mechanical cleaning as the guide. Backed by the strong technical strength of the central enterprises, it has continuously made forward research and development, conquered one construction problem after another, ensured the safe and smooth advance of shield tunneling, and rushed out of the main channel of the Yellow River according to the planned construction period, It fully shows the unique special construction ability of China railway construction system

at present, the shield machine has entered the beach soil layer on the south bank, and the construction progress is relatively smooth. By the end of March, it can run through the shaft on the south bank, and fully complete the shield tunneling task of 3450m across the river

hoisting and transportation of segments of the South-to-North Water Transfer Project

uneven product structure

strive to improve every segment assembled, and the error is controlled within 2mm

at the depth of about 40 meters in the main river channel of the Yellow River, the employees carefully assembled segments with the river water on their heads

the employees raced against time to quickly connect the muddy water pipeline

the main river channel of the Yellow River under the sunset

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