| 浅埋暗挖隧道下穿次高压燃气管保护方案 |
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| 引用本文： | 朱康宁.浅埋暗挖隧道下穿次高压燃气管保护方案[J].现代隧道技术,2012,49(2):142-146. |
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| 作者姓名： | 朱康宁 |
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| 作者单位： | 深圳市市政工程总公司隧道公司,深圳,518000 |
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| 摘 要： | 地铁施工中经常会遇到地下管线近接的问题,尤其是燃气管道,极大地影响了地铁暗挖隧道的施工安全和施工工期。深圳地铁2号线东延线土建2222标安-侨区间施工中,隧道下穿次高压燃气管道时采取了"水平旋喷桩+深孔帷幕注浆地层加固及管线悬吊"的综合保护方案,有效地控制了燃气管的沉降,确保了隧道施工中燃气管道的安全。文章论述了保护方案的比较与实施以及效果分析。
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| 关 键 词： | 浅埋暗挖隧道 次高压燃气管 水平旋喷桩 深孔帷幕注浆 管线悬吊 冻结法 |
Protection Scheme for a Shallow-Bored Tunnel Under a Gas Pipeline with Intermediate High Pressure |
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| Zhu Kangni.Protection Scheme for a Shallow-Bored Tunnel Under a Gas Pipeline with Intermediate High Pressure[J].Modern Tunnelling Technology,2012,49(2):142-146. |
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| Authors: | Zhu Kangni |
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| Institution: | Zhu Kangni(Tunneling Company of Shenzhen Municipal Engineering Corporation,Shenzhen 518000) |
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| Abstract: | During metro construction,underground pipelines,especially gas pipelines,are often encountered in very close proximity,which significantly affects the safety and construction schedule of a bored metro tunnel.As for the Antuoshan to Qiaoxiang section of Lot 2222 of the Shenzhen Metro line 2,horizontal jet grouting piles and deep-hole curtain grouting,as well as pipeline hanging,were undertaken to effectively control settlement.This paper presents a comparison of various protection schemes as well as their implementation and effects. |
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| Keywords: | Shallow bored tunnel Gas pipeline with intermediate pressure Horizontal jet grouting Deep-hole curtain grouting Pipeline hanging Freezing method |
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