| 特殊地质条件下山区六道分离式隧道施工方案研究 |
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| 引用本文： | 郭占北.特殊地质条件下山区六道分离式隧道施工方案研究[J].科技广场,2013(10):222-226. |
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| 作者姓名： | 郭占北 |
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| 作者单位： | 中铁十四局集团有限公司第四分公司,山东济南250014 |
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| 摘 要： | 九连山隧道进口正洞穿越浅埋坡残积土、全风化花岗岩地层，所处区域雨水多，地层下渗系数非常高，地下水丰富，而且洞口段存在潜在的不稳定滑坡体。该地层由于受到地质构造及岩土特性的影响，在施工过程中表现为超常的拱顶沉降以及强有力的推拉应力造成初期支护破坏的现象。经过对围岩地质构造和该类围岩实际开挖支护形式的探讨研究，以及支护措施加强适应性研究和施工方案的选择，总结出一套安全通过此地层的应对方案及措施，积累了施工经验，为今后类似工程提供借鉴。
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| 关 键 词： | 全风化花岗岩 不稳定滑坡体 拱顶沉降 初期支护 施工技术 |
Research on Six Separated Tunnel Construction Scheme in District in Special Geological Conditions |
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| Guo Zhanbei.Research on Six Separated Tunnel Construction Scheme in District in Special Geological Conditions[J].Science Mosaic,2013(10):222-226. |
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| Authors: | Guo Zhanbei |
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| Institution: | Guo Zhanbei ( Fourth Branch of China Railway Fourteen Bureau Group Co., Ltd., Shandong Ji＇nan 250014 ) |
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| Abstract: | The ＂Summary＂ Jiulian mountain tunnel straight tunnel goes across the shallow slope residual soil, and weathered granite fbrmation. The rainfall and groundwater is abundant there, and the ground infiltration coef- ficient is high; the landslide at the entrance is of potential instability. Due to geological and geotechnical character- istics, during construction, the strata shows a strong performance for superior Vault sliding phenomenon of prima- ry supporting devastation caused by stress. After researching on surrounding rock of geological structure and the actual class surrounding rock excavation and forms, and considering support measures to strengthen the adaptabili- ty and construction scheme, we summarized a set of programs and measures for safely passing this stratum, and ac- cumulated experiences in the construction, hoping to provide reference for future similar constructions. |
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| Keywords: | Whole Weathered Granite Unstable Landslide Vault Settlement Preliminary Support Construction Technology |
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