| 邻近既有隧道的新建隧道稳定性控制对策研究 |
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| 作者单位： | ;1.北京首都国际机场股份有限公司;2.山东东岳国际经贸合作股份有限公司;3.山东省冶金设计院股份有限公司 |
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| 摘 要： | 从新建隧道与既有隧道之间的合理岩柱的留设、新建隧道的施工方法以及支护方式等方面,采用数值模拟的方法,分析邻近既有平风岭隧道的新建新平风岭隧道的稳定性控制问题,提出留设8m岩柱、采用单侧壁导坑施工方法、侧向45°超前小导管加固的一体化稳定性控制对策。
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| 关 键 词： | 既有隧道 新建隧道 控制对策 数值模拟 |
Research on Stability Control Measures of Newly-built Tunnel Adjacent to Existing Tunnel |
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| Institution: | ,Beijing Capital International Airport Co.,Ltd.,Shandong Dongyue International Trade and Economic Cooperation Co.,Ltd.,Shandong Province Metallurgical Engineering Co.,Ltd. |
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| Abstract: | The issues of stability control of the newly-built Pingfengling Tunnel adjacent to the existing Pingfengling Tunnel were analyzed by means of numerical simulation,in terms of the rock pillar's reserving between the two tunnels,the construction method for the newly-built one,the support forms and so on.As a result,an integrative control measure of tunnel stability has been proposed,such as reserving8 m rock pillar,using single side drift method,and using advanced small ducts to laterally strengthen in45°direction of tunnel axis. |
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| Keywords: | existing tunnel newly-built tunnel control measures numerical simulation |
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