The hottest heavy weapons of Qingdao Metro Line 2
2022-10-16- Detail
Qingdao Metro Line 2 "automatic stop at the end of the experiment heavy weapons" came on the shield machine began to drive
Qingdao Metro Line 2 "heavy weapons" came on the shield machine began to drive
China Construction machinery information
on May 29, at the construction site of yan'erdao Road Station of Qingdao Metro Line 2, with the rumbling sound of the machine, the cutter head slowly turned, Composite soil through measuring the 27m pier column that has been poured on the 15 right pier shaft, it can be seen that the mechanical performance of the pressure balance shield machine (EPB) "Zhuoyue No. 1" starting tunneling is more important than other physical properties. This section tunnel is the first tunnel constructed by earth pressure balance shield method in Qingdao Metro and the first tunnel constructed by this method in the province
it is understood that the length of the left line and the right line of the Fuyan section of Qingdao Metro Line 2 (from Fushan station to yan'erdao Road Station) is 845 meters and 849 meters respectively. The geological conditions in this section are complex, and there are unfavorable geology such as water rich sand layer, broken zone and upper soft and lower hard stratum, which is a complex geology with great difficulty in shield construction. "There are 1 secondary risk source and 4 tertiary risk sources in the whole section, which goes through commercial channels, drainage culverts, ancient river beds and the most prosperous Hong Kong Middle Road core financial and business district in Qingdao." According to the person in charge of construction on site, the use of composite earth pressure balance shield machine can avoid a variety of risks
it is understood that the composite earth pressure balance shield machine used in this excavation is produced by CSSC heavy industries. The excavation diameter is 6.28 meters, and the German Herrick technology with international leading level is adopted. According to the on-site construction party, the shield tunneling construction in the whole section is difficult and relatively risky. It is expected that the shield tunneling task in the section will be fully completed by the end of April next year
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