辉绿岩脉引起的隧道大变形及其形成机制

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摘要研究目的：以龙厦铁路吴坑隧道为例，在辉绿岩工程性质分析的基础上，结合现场监测资料对辉绿岩脉分布段围岩压力、隧道变形的特点及隧道大变形的形成机制进行研究，为辉绿岩分布地区隧道设计、施工提供指导。

研究结论：(1)辉绿岩富含高岭石，具有强度低、易崩解和弱膨胀的工程特性，在卸荷应力路径下，沿卸荷方向有强烈的扩容现象；(2)辉绿岩脉的分布对围岩压力的大小及分布有十分明显的影响，岩脉出露多的断面围岩压力明显比出露少的断面大，局部出露部位比邻近未出露部位的大；(3)辉绿岩脉的分布对隧道变形也有明显影响，拱顶出露岩脉的断面拱顶下沉量较大，边墙、拱腰出露岩脉多的断面，边墙收敛变形较大，岩脉出露多的区段，隧道变形时间较长；(4)辉绿岩脉分布段隧道大变形既有膨胀变形又有挤压变形；(5)本文研究成果可用于辉绿岩分布地区隧道的设计和施工。

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	刘成禹
	陈智慧

关键词 ：辉绿岩脉, 隧道, 围岩压力, 大变形, 膨胀, 挤压

Abstract：Research purposes: Taking the Wukeng Tunnel of the Longyan-Xiamen Railway as an example，basing on the analysis of the engineering properties of the diabase and the on-site monitored data, this paper studies the pressure of the surrounding rock in the section of the diabase dikes, the deformation characteristics of the tunnel and the formation mechanism that causes the large tunnel deformation to provide the guidance for the design and construction of the similar tunnels.

Research conclusions:(1)The diabase is rich in kaolinite, with the engineering properties of low strength, easy disintegration and weak expansion, but it is dilatable along the unloading direction under the unloaded stress path.(2)The distribution of the diabase dikes has the significant effect on the magnitude and distribution of the rock pressure. The pressure of the surrounding rock with exposing more diabase section is bigger than that with exposing less diabase section, and the pressure of the exposing part is bigger than that of the adjacent parts without exposure.(3)The distribution of diabase dikes also affect the tunnel deformation significantly. The settlement of the vault with exposing the section is larger. In the section of exposing the diabase on the dome, the convergence deformation of the sidewall is larger. In the section of exposing the diabase on the sidewall and arch, the tunnel deformation lasts longer. (4) In the section of exposing more diabase, the large tunnel deformation contains the swelling deformation and compressional deformation. (5)This research result can be available for the design and construction of tunnel in diabase zone.

Key words： diabase dikes tunnel surrounding rock pressure large deformation expansion compression

收稿日期: 2013-05-28

PACS:

TU45

基金资助:国家自然科学基金项目(No:41272300)

作者简介: 刘成禹，1970年出生，男，副教授；陈智慧，1970年出生，男，高级工程师。

引用本文:

刘成禹，陈智慧. 辉绿岩脉引起的隧道大变形及其形成机制[J]. 铁道工程学报, 2013, 30(9): 53-59.
LIU Cheng-yu, CHEN Zhi-hui. Large Tunnel Deformation Caused by Diabase Dike and Its Formation Mechanism. Journal of Railway Engineering Society, 2013, 30(9): 53-59.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2013/V30/I9/53

[1]孙钧, 潘晓明.隧道软弱围岩挤压大变形非线性流变力学特性研究[J].岩石力学与工程学报,2012(10):1957-1968.

Sun Jun, Pan Xiaoming. Research on Large Squeezing Deformation and Its Nonlinear Rheological Mechanical Characteristics of Tunnel with Weak Surrounding Rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2012(10):1957-1968.

[2]HOEK E. Big Tunnels in Bad Rock[J]. Journal of Geotechnical and Geo-environmental Engineering, 2001(9):726-740.

[3]刘高, 张帆宇, 李新召, 等. 木寨岭隧道大变形特征及机理分析[J].岩石力学与工程学报,2005(2):5521-5526.

Liu Gao, Zhang Fanyu, Li Xinzhao, etc. Research on Large Deformation and its Mechanism of Muzhailing Tunnel[J]. Chinese Journal of Rock Mechanics and Engineering, 2005(2):5521-5526.

[4]李国良, 朱永全.乌鞘岭隧道高应力软弱围岩大变形控制技术[J].铁道工程学报,2008(3):54-60.

Li Guoliang, Zhu Yongquan. Control Technology for Large Deformation of Highland Stressed Weak Rock in Wushaoling Tunnel [J]. Journal of Railway Engineering society, 2008(3):54-60.

[5]刘志春, 朱永全, 李文江, 等.挤压性围岩隧道大变形机理及分级标准研究[J].岩土工程学报,2008(S):690-697.

Liu Zhichun, Zhu Yongquan, Li Wenjiang, etc. Mechanism and Classification Criterion for Large Deformation of Squeezing Ground Tunnels [J]. Chinese Journal of Geotechnical Engineering, 2008(5):690-697.

[6]张继奎, 方俊波.高地应力千枚岩大变形隧道支护参数试验研究[J].铁道工程学报, 2005(5):66-70.

Zhang Jikui, Fang Junbo. Experiment Research on Support Parameters of Large Strain Phyllite Tunnel Under High Stress [J]. Journal of Railway Engineering Society, 2005, (5):66-70.

[7]刘招伟, 王明胜, 方俊波.高地应力大变形隧道支护系统的试验研究[J].土木工程学报, 2010(5):111-116.

Liu Zhaowei, Wang Mingsheng, Fang Junbo. Insitu Study of Reinforcement Systems for Tunnels Under High Geo-stress and Large Deformation [J]. China Civil Engineering Journal, 2010(5):111-116.

[8]孙绍峰.兰渝铁路软岩隧道特征及大变形控制技术[J].现代隧道技术,2012(3):125-130.

Sun Shaofeng. Characteristicx of Soft Rock Tunnels and Large Deformation Control Technology in the Lanzhou-Chongqing Railway[J]. Modern Tunnelling Technology, 2012(3):125-130.

[9] 苟彪, 张奕斌.新蜀河隧道炭质片岩大变形控制技术研究[J].铁道工程学报, 2009(11):40-44.

Gou Biao, Zhang Yibin. Research on the Control Technology for Large Deformation of Carbon Schist of Xinshuhe Tunnel[J]. Journal of Railway Engineering Society, 2009(11):40-44.

[10]王更峰, 张永兴, 熊晓晖, 等.深埋大变形隧道炭质板岩蠕变特性试验[J].公路交通科技, 2012(9):95-102.

Wang Gengfeng, Zhang Yongxing, Xiong Xiaohui, etc. Experiment of Creep Characteristics of Carbonaceous Slate of Deep-buried Tunnel with Large Deformation[J]. Journal of Highway and Transportation Research and Development, 2012(9):95-102.

[11]秦社彩, 范蔚茗, 郭锋, 等.浙闽晚中生代辉绿岩脉的岩石成因:年代学与地球化学制约[J].岩石学报,2010(11):3295-3306.

Qin Shecai, Fan Weiming, Guo Feng, etc. Petrogenesis of Late Mesozoic Diabase Dikes in Zhejiang-Fujian Provinces: Constraints from Ar-Ar Dating and Geochemistry [J]. Acta Petrologica Sinica,2010(11):3295-3306.

[12]孙小明, 武雄, 何满潮, 等.强膨胀性软岩的判别与分级标准[J].岩石力学与工程学报,2005(1):128-132.

Sun Xiaoming, Wu Xiong, He Manchao, etc. Differentiation and Grade Criterion of Strong Welling Soft Rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2005(1):128-132.

[13]贺如平, 张强勇, 王建洪, 等.大岗山水电站坝区辉绿岩脉压缩蠕变试验研究[J].岩石力学与工程学报,2007(12):2495-2503.

He Ruping, Zhang Qiangyong, Wang Jianhong, etc. Study on Compressive Creep Test on Diabasic Dike at Dam Site of Dagangshan Hydropower Station [J]. Chinese Journal of Rock Mechanics and Engineering, 2007(12):2495-2503.

[14]张成良, 杨绪祥, 余贤斌.加卸荷条件下辉绿岩岩体力学参数特性研究[J],地下空间与工程学报, 2012(2):280-285.

Zhang Chengliang, Yang Xuxiang, Yu Xianbin. Experimental Study of Diabase Mechanical Properties by Triaxial Loading and Unloading Tests[J]. Chinese Journal of Underground Space and Engineering, 2012(2):280-285.

[15]徐开礼, 朱志澄.构造地质学[M].北京:地质出版社, 2003.

Xu Kaili, Zhu Zhicheng. Structural Geology[M]. Beijing: Geological Publishing House, 2003.