| 盾构下穿地铁线路地层加固技术 |
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| 引用本文： | 张永.盾构下穿地铁线路地层加固技术[J].铁道建筑技术,2011(1):99-101,108. |
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| 作者姓名： | 张永 |
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| 作者单位： | 中铁十五局集团城市交通工程公司,广东深圳,518000 |
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| 摘 要： | 深圳地铁2号线东延段2224标段,两站三区间一盾构始发井。其中福市区间盾构从市民中心站西端始发,始发时始发端距既有4号线隧道结构水平距离仅有6.542 m,2号线隧道距既有4号线隧道结构底部最小垂直净距约为1.567 m。这种始发条件、始发难度和风险性之大为全国罕例。采用微型桩和袖阀管相结合的加固方法,盾构施工最终成功下穿4号线。
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| 关 键 词： | 盾构施工 下穿既有线路 地层加固 |
Stratum Reinforcement Technologies of the Shield under Passing Subway Lines |
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| Zhang Yong.Stratum Reinforcement Technologies of the Shield under Passing Subway Lines[J].Railway Construction Technology,2011(1):99-101,108. |
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| Authors: | Zhang Yong |
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| Institution: | Zhang Yong(China Railway 15~(th) Bureau Group Co.Ltd.,Shenzhen 518000,China) |
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| Abstract: | 2224 Tender of Shenzhen Metro Line 2 East Extension Section has two stations,three intervals and a launching shaft.The shield of Fu-Shi Internal starts from the west end of Shimin Center Station,with the horizontal distance between its launching end and the existing Metro Line 4 tunnel structure being only 6.542 m,and the minimum vertical distance between Metro Line 2 tunnel and the bottom of Metro Line 4 tunnel structure being 1.567 m.This kind of launching condition,difficulties and risks are rarely seen ... |
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| Keywords: | shield construction under pass the existing line stratum reinforcement |
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