新建隧道與既有隧道交叉段施工方案研究
趙樂之1，喬 磊2
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趙樂之1，喬 磊2
（1 北京市市政工程設(shè)計(jì)研究總院，北京 100082；2 城市建設(shè)研究院，北京 100120）[摘要] 近年來，隨著我國鐵路、公路及市政建設(shè)事業(yè)的高速發(fā)展，越來越多的隧道工程投入建設(shè)。由于地質(zhì)條件的限制及地下空間的綜合開發(fā)利用，在工程中不可避免地產(chǎn)生近距離交叉隧道。鑒于新建隧道施工會(huì)對既有隧道造成不利影響，同時(shí)也增加了新建隧道施工的難度，結(jié)合某城市隧道上跨廈深鐵路隧道的工程設(shè)計(jì)實(shí)例，著重對比分析新建隧道兩種施工方案，探討交叉隧道段加固方案以及監(jiān)控量測方案，對近距離隧道施工具有一定的指導(dǎo)意義。
[關(guān)鍵詞] 近距離交叉隧道；施工方案；隧道加固；監(jiān)控量測
中圖分類號：TU451 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2012) Sl-0868-03
Construction scheme research of cross section between newly built tunnel and existing tunnel
Zhao Lezhi1, Qiao Lei2
(1 Beijing General Municipal Engineering Design & Research Institute, Beijing 100082, China;
2 Urban Construction Design & Research Institute, Beijing 100120, China)
Abstract: In recent years, more and more tunnel projects are invested in construction with the high speed development of railways, lughways and municipal construction in China. Close cross tunnel is inevitably arisen in the project due to geological conditions and comprehensive development and utilization of under-ground space, which will cause adverse affect to existing tunnel and thus increase difficulties to the new tunnel construction. A design example of a city tunnel up-crossing Xiamen Shenzhen railway tunnel was presented, and two construction programs of which were comparatively analyzed to explore the cross-tunnel section reinforcement programs as well as the measurement monitored programs, which will provide certain guiding significance to close cross tunnel construction.
Keywords: close cross tunnel; construction program; tunnel reinforcement; monitoring measurement
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