隧道硬岩掘进经济成本对比分析--《隧道建设》2008年06期

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隧道硬岩掘进经济成本对比分析

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P~)C f,xN4a0【摘要】:目前国内山岭隧道多数采用人工开挖,机械化、自动化水平低,不能满足隧道快速施工的要求。结合某隧道施工实践,介绍了人工开挖和双台车开挖机械设备配套、光面爆破技术,统计隧道开挖各工序的消耗时间,预估单台车开挖的时间消耗,并以此为基础详细分析、计算了各自施工成本组成,得出了台车开挖施工成本低,节约循环时间,更有利于快速掘进的结论。

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0jLt/_ @a0n0重庆高速公路发展有限公司;重庆对外建设总公司;水利论文(Xc{!rv

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山岭隧道 硬岩掘进 钻爆法 人工开挖 台车开挖 成本对比分析 经济成本 施工成本 施工方法 光面爆破技术水利论文)^:|)FyL3fA0?.j

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0引言随着20世纪世界科学、技术、经济的发展,交通运输、水利水电、城市地下交通及空间的利用等对隧洞工程数量和难度上提出了更高的要求。我国交通隧道的建设有3个非常明显的趋势:一是需修建的长隧道越来越多,长度越来越长;二是以隧道方式跨越江、河、湖、海水域的工程越来水利论文+~ o \ NKdg

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