Hobbing cutter
Release time:
2025-05-15
Guangzhou Metro Line 13 starts at Yu Zhu Station, passes through Zengcheng District and Huangpu District, and ends at Xin Sha Station. It runs roughly east-west, with a total length of 27.03 kilometers, all underground.
Guangzhou Metro Line 13 starts at Yu Zhu Station, passes through Zengcheng District and Huangpu District, and ends at Xin Sha Station. It runs roughly east-west, with a total length of 27.03 kilometers, all underground. The construction scope of Guangzhou Metro Line 13 includes the shield tunneling section from Zhu Cun Station to Yu Zhu Station, the shield tunneling section from E43# well to Zhu Cun Station, and the entry and exit lines of Yu Zhu depot. This breakthrough of the right-line shield tunneling section is approximately 1789m long, with a minimum plane radius of 600m and a maximum slope of 22.385‰. Along the section, gas pipes, high-voltage cables, and other pipelines are densely distributed, and the geological and hydrological conditions are complex, resulting in high risks in shield construction and significant pressure on safety management.
Cutting Tool Configuration
18-inch serrated cutter combined with a 6.66M TBM
Advancement Distance
Achieved a breakthrough in advancing 1500 meters without changing the cutting tools, earning high praise from the client.
Challenges
The challenges included complex geological conditions with high groundwater inflow and permeability. The karst cave occurrence rate within the construction area reached 40%, with the largest cave exceeding 21 meters. The TBM also had to pass under railway bridges, large-diameter pipelines, and rivers.
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