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施工技术

白果湾隧道下穿达成铁路施工技术

  • 周铁刚
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  • (中铁一局兰渝铁路一分部, 四川 南充 637156)
周铁刚(1979—),男,陕西商洛人,2003年毕业于兰州交通大学,本科,工程师,现从事施工现场技术管理工作。

收稿日期: 2012-07-30

  修回日期: 2012-08-20

  网络出版日期: 2013-02-19

Construction Technologies of Baiguowan Tunnel Crossing underneath DazhouChengdu Railway

  • ZHOU Tiegang
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  • (The 1st Branch of LanzhouChongqing Railway Project Department of China Railway First Group Nanchong 637156, Sichuan, China)

Received date: 2012-07-30

  Revised date: 2012-08-20

  Online published: 2013-02-19

摘要

白果湾隧道下穿既有达成线和达成二线,全隧浅埋,洞身最大埋深34 m,最小埋深2.5 m(隧道开挖拱顶距既有铁路路基水沟底高差),施工过程中为了确保施工安全及既有铁路运营安全,采用D便梁加固既有线路、洞内超前大管棚支护、微台阶法加临时仰拱施工、控制爆破开挖、衬砌紧跟的施工方案,既确保了既有铁路运营安全又保证了下穿段隧道施工安全,对同类工程施工具有一定的参考价值。

本文引用格式

周铁刚 . 白果湾隧道下穿达成铁路施工技术[J]. 隧道建设, 2012 , 32(增刊1) : 113 -116 . DOI: 10.3973/j.issn.1672-741X.2012.z1.025

Abstract

The Baiguowan tunnel crosses underneath DazhouChengdu No. 2 line. The construction technologies, including existing railway reinforced by D beam, advance large roof support in tunnel, tiny step and temporary invert method, blasting control method and lining followed method, are used, so as to ensure the construction safety of Baiguowan tunnel and running existing railway. The paper can provide references for similar projects in the future.

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