| 摘要: |
| 以实际水下隧道为工程背景，建立数值模型，分析水下并行隧道后行洞施工对先行洞的影响.结果表明：后行洞施工主要影响距离该断面位置前后1.5倍洞径；后行洞施工后，围岩沉降分布形态发生变化，在左右拱顶较大，在两洞之间及两侧较小，即出现了“驼峰”；对于最大主应力，后行洞施工对靠近侧的右边墙影响较大；随着后行洞的施工，渗流影响范围逐渐向后行洞侧扩展，隧道周边渗流量的大小呈现拱顶和仰拱处的大于边墙的，而后行洞和先行洞之间的边墙渗流量大于外侧边墙的渗流量. |
| 关键词: 隧道工程；水下隧道；先行洞 后行洞 |
| DOI： |
| 分类号:U459.2 |
| 基金项目:湖南省自然科学基金资助项目(14JJ4046);国家自然科学基金资助项目(51408216,41272324,41302226,51308209)；湖南科技大学研究生培养改革研究项目（J151101） |
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| Effect of the subsequent driving tunnel on the advanced tunnel of underwater parallel tunnels |
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An Yonglin1,2,Hu Wenxuan2,Yue Jian1,21,2
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1.Hunan Province Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring,
Hunan University of Science and Technology,Xiangtan 411201,China;2.School of Civil Engineering,
Hunan University of Science and Technology,Xiangtan 411201,China
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| Abstract: |
| Simulation model of the water tunnel project was used to study the effect of the subsequent driving tunnel on the advanced tunnel of underwater parallel tunnels. The results show that the influence scope is the 1.5D distance from the subsequent tunnel driving face; and that the settlement of the crown is the biggest, but settlement between the parallel tunnels is smaller, that is the settlement is like a hump shape; and that the advanced tunnel sidewall is greatly affected near the subsequent driving tunnel; and that seepage affected scope gradually extends to the subsequent driving tunnel side, seepage flow of the crown and invert is larger than that of the sidewall, seepage flow of the sidewall between the parallel tunnels is larger than that of the outer sidewall. |
| Key words: tunnel engineering underwater tunnel advanced tunnel subsequent driving tunnel |
