| 浅埋偏压隧道开挖技术 |
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| 引用本文： | 李志星,张宇华,石效民. 浅埋偏压隧道开挖技术[J]. 施工技术, 2011, 40(3) |
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| 作者姓名： | 李志星 张宇华 石效民 |
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| 作者单位： | 北京市公路桥梁建设集团有限公司,北京,100068 |
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| 基金项目： | 北京市政路桥控股(集团)公司科技开发项目(LQKJ-2010-B-01) |
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| 摘 要： | 针对密兴路改建工程火郎峪隧道进口段浅埋偏压的特点,提出了调整进洞位置、采用双排注浆小导管超前支护、反压回填施工以及控制爆破振动等一系列施工技术措施,有效控制了隧道拱顶沉降与洞周收敛。监测结果表明,所采用的施工技术措施行之有效,能够保证浅埋偏压段隧道施工的安全。
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| 关 键 词： | 浅埋偏压隧道 超前支护 反压回填 控制爆破 |
Excavation Technology of Shallow Tunnel Under Unsymmetrical Pressure |
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| Li Zhixing,Zhang Yuhua,Shi Xiaomin. Excavation Technology of Shallow Tunnel Under Unsymmetrical Pressure[J]. Construction Technology, 2011, 40(3) |
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| Authors: | Li Zhixing Zhang Yuhua Shi Xiaomin |
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| Affiliation: | Li Zhixing,Zhang Yuhua,Shi Xiaomin(Beijing Roads and Bridges Construction Group Corporation Limited,Beijing 100068,China) |
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| Abstract: | Basing on the characteristics of entrance of Huolangyu Tunnel in Mixing road with shallow-buried and unsymmetrical pressure,the authors put forward a series of construction measures to effectively control the arch top settlement and shrinkage surround tunnel,which include adjusting location of tunnel entrance,supporting by double-row advanced ductile grouting,back pressure and back fill construction and controlling blasting etc.The monitoring results show that these construction measures are feasible to ass... |
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| Keywords: | shallow tunnel under unsymmetrical pressure advanced support back fill with back pressure controlled blasting |
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