海中洲隧道扩建中原隧道塌方的处理技术:《隧道建设》2012年02期

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5O$I:R2lk'M&v!xW0海中洲隧道扩建中原隧道塌方的处理技术

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g,Q)Y6?a7x0【摘要】:目前国内尚无相应的基于改建或扩建既有老隧道的设计规范和规程作为设计方案之依据,在改扩建过程中如何制定合理、可靠的设计方案和施工方案,以海中洲城市隧道扩建过程为例,通过对原塌方区情况调查分析、研究,提出地表注浆锚杆加固、塌腔处理、塌腔回填等综合整治措施。总结出以下结论:1)对于老隧道改扩建工程,首先应熟悉老隧道情况,其次通过多种手段做详细的地质勘察,为系统性设计方案提供充分的依据;2)对于波及地表的土质浅埋隧道塌方处理,应综合考虑各种因素及相互关系,采用全面系统的整治方案;3)"稳固既有坍塌面,快速处理封闭成环"是防止原塌方规模进一步扩大的关键,对塌腔壁采用喷、网、锚、撑综合加固是行之有效的方法。水利论文|HBU/M

d)Q(So_5X C0【作者单位】:

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\MA"k;aX0宁波顺和路桥设计有限公司;水利论文TZ_ S5pgp4H]

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【关键词】:水利论文!FA!r^]7mycc%cw

D u5Hwt"jx0海中洲隧道 隧道扩建 塌方 注浆加固 塌腔处理 塌腔回填

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v b7[R5y+F0【基金】:宁波市交通局科技计划项目(200908)水利论文Dl1u8? G

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【分类号】:U455.4

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!R XI?)}!R0【正文快照】:

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]{Ojg00引言随着经济和社会的发展,交通量在迅猛增长,早期修建的城市隧道已越来越不适应现代交通的需求,改建或扩建既有老隧道已成为一种发展趋势。由于受城市路网布局和建筑物等制约因素的影响,在尽量减少新增建筑用地,不改变原有路网布局和少拆迁建筑物等有利条件下,对既有隧道进水利论文f K t:M'D

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