| 南京长江江心洲超大直径盾构接收井明挖段 超深基坑降水技术研究 |
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| 引用本文： | 李洪财.南京长江江心洲超大直径盾构接收井明挖段 超深基坑降水技术研究[J].探矿工程,2018,45(5):87-92. |
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| 作者姓名： | 李洪财 |
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| 作者单位： | 中铁十四局集团大盾构工程有限公司 |
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| 摘 要： | 南京长江隧道盾构接收井地处江心洲上，开挖地层以粉细砂层和砾砂层为主，降水施工中成功地克服了强透水地层分布厚、受承压水影响大、基坑开挖深度深、民房离基坑边沿距离近、降水技术复杂、地表沉降控制难等一系列技术难题。本文对基坑降水方案设计、施工工艺及地表沉降控制等方面进行了研究和总结。
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| 关 键 词： | 盾构接收井 深基坑 降水技术 地表沉降 南京长江隧道 |
| 收稿时间： | 2017/12/20 0:00:00 |
| 修稿时间： | 2018/3/21 0:00:00 |
Study on Dewatering Technology of Ultra-deep Foundation Pit in Opening Cut Section of Super-large Diameter Shield Receiving Well in River Island of Nanjing Yangtze River |
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| LI Hong-cai.Study on Dewatering Technology of Ultra-deep Foundation Pit in Opening Cut Section of Super-large Diameter Shield Receiving Well in River Island of Nanjing Yangtze River[J].Exploration Engineering(Drilling & Tunneling),2018,45(5):87-92. |
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| Authors: | LI Hong-cai |
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| Institution: | Large Diameter Shield Co., Ltd. of China Railway Bureau 14 Group |
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| Abstract: | The shield receiving well in Nanjing Yangtze tunnel is located at the river island; the excavation is mainly in fine sand layer and gravel sand layer. In the dewatering construction, a series of difficulties are successfully overcome, such as thick strong permeability formation, great influence of confined water, deep excavation depth, close distance from civil house to foundation pit, complex dewatering technology and difficult ground settlement control. In this paper, the study and summary are made on the design of foundation pit dewatering, construction process and ground settlement control. |
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| Keywords: | shield receiving well deep foundation pit dewatering technology surface subsidence Nanjing Yangtze River tunnel |
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