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First Underground Diaphragm Wall Commences Construction in Section 1 of Shenzhen Mawan Cross-Sea Passage

2019-07-09 1457 0人评论

　　7月4日，由上海隧道工程有限公司承建的深圳妈湾跨海通道（月亮湾大道－沿江高速）工程施工总承包1标首幅地下连续墙正式开工。

　　妈湾跨海通道全长约8.05km，1标主要包括前海段长820m的明挖隧道、海域段长2060m的单洞超大直径盾构隧道及配套结构工程。1标围护结构采用1.2m及1m厚地下连续墙，共计303幅，深度约为29~44.1m(最深)，接头为工字钢接头及铣接法接头。该区段存在大量的回填抛石，地下连续墙在该类地层成槽过程中槽段的稳定性问题十分突出，此外槽段底部存在部分混合花岗岩，地墙施工最大需入岩14.8m，对地墙施工提出了较高的质量控制要求。

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First Underground Diaphragm Wall Commences Construction in Section 1 of Shenzhen Mawan Cross-Sea Passage

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First Underground Diaphragm Wall Commences Construction in Section 1 of Shenzhen Mawan Cross-Sea Passage

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