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拉脊山隧道洞口段施工方法研究

DOI: 10.3969/j.issn.1674-0696.2013.04.23, PP. 642-646

Keywords: 隧道工程,CRD法,施工,拱顶下沉,tunnelengineering,CRDmethod,construction,arch-crownsubsidence

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Abstract:

:?介绍了国内外软弱地层下隧道洞口段的施工方法,根据数值计算,研究了拉脊山隧道洞口段的施工方案,确定了施工方法———CRD法,及拉脊山隧道洞口段的施工工序。现场位移监测数据表明:采用CRD法施工时,拱顶沉降最大位移≯9cm,保证了施工过程的安全。对比监测值与数值计算值,表明利用CRD法进行施工是恰当的。

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