Continuing to help build a beautiful Greater Bay Area! Shield machine of China Railway Shanhe successfully penetrated the right line of Shenzhen Metro Line 3 from Low Carbon Station to Pingxi Station.
Release Time:
2022-11-24 15:05
Source:
China Railway Sunward Public
From the countryside to the city, from the tunnels with only machines roaring to the ground construction site with a lot of people, at 9:30 pm on November 20, after 7 months, the shield machine of China Railway Shanhe successfully penetrated through the right line of the Shenzhen Metro Line 3 from Low-Carbon Station to Pingxi Station, which is another solid step on the journey of helping to build the Guangdong-Hong Kong-Macao Greater Bay Area.
据悉，华南地区素有“地质博物馆”之称，长距离、复合地层、地表古建筑多等一系列问题也给深圳地铁3号线项目施工带来了巨大的挑战。低碳站～坪西站区间右线起讫里程长967.50m，最大埋深32.7m，盾构机从低碳城站始发，区间需下穿岩溶发育区、萧氏炮楼遗址、建构筑物、河流及重要管线等，最终到达国内首批内支撑体系下采用长拱大跨拼装式建造的地铁车站——坪西站，施工难度可见一斑。
In the face of such a difficult problem, the project team of China Railway Shanhe formulated scientific and reasonable shield tunnelling parameters, paid close attention to slag samples and slag volume, adjusted technical means in time according to the advancement of real-time situation, optimized the tunnelling parameters, scientifically applied the shield construction means, followed the principle of double-control of grouting volume and grouting pressure, and took a series of measures by adding synchronous thickening grouting, medium shield mud injection, soil silo plus polymer improvement, and strict control of secondary grouting. In particular, the efficient application of soil silo plus low concentration polymer sludge improvement, medium shield mud injection and synchronized injection of double liquid slurry technology effectively prevented the settlement of Xiao's gun tower.
“When formulating construction parameters, the project team comprehensively considered the changes in engineering geological conditions and overburden thickness within the scope of the critical project, and implemented information-based construction based on settlement monitoring data during construction.” The relevant person in charge of the introduction, in line with the principle of high quality and high efficiency, safe and reliable as the basis, we go all out to reach the goal of smooth passage of the right line, and ultimately achieve a perfect finish.
The project took 7 months from the start to the passage, and it is worth mentioning that many shield machines of China Railway Shanhe have blossomed all over the South China region. Adhering to the concept of “creating value for customers”, China Railway Shanhe will continue to build green, environmentally friendly, technological and quality projects with high quality, high standard and high efficiency to help build a beautiful area in the Greater Bay Area.
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