隧道超欠挖断面轮廓分形特征

J4 ›› 2010, Vol. 40 ›› Issue (1): 153-158.

隧道超欠挖断面轮廓分形特征

肖云华^1,2,陈剑平¹,张鹏³,张丽¹

1.吉林大学　建设工程学院, 长春 130026;2.长江三峡勘测研究院有限公司|武汉 430074;3.湖南省交通规划勘察设计院|长沙 410011

收稿日期:2009-06-22 出版日期:2010-01-26 发布日期:2010-01-26
作者简介:肖云华(1978-)|男|湖北仙桃人|博士|主要从事非线性理论在地质工程中的应用研究|E-mail:xyh3rd@126.com
基金资助:
国家自然科学基金项目(40872170)；吉林大学“985”工程

Fractal Feature of Overbreak-Underbreak Figure of Tunnel Section

XIAO Yun-hua^1,2, CHEN Jian-ping¹, ZHANG Peng³, ZHANG Li¹

1.College of Construction Engineering, Jilin University, Changchun 130026, China;2.Three Gorges Geotechnical Consultants Co., Ltd., Wuhan 430074|China;3.Survey &|Design Institute, Hunan Provincial Communications Planning, Changsha 410011, China

Received:2009-06-22 Online:2010-01-26 Published:2010-01-26

摘要/Abstract

摘要：

对于极不规则的隧道围岩超欠挖轮廓，分形几何无疑是一个新思路。在测量数据的基础上，应用分形几何来定量描述围岩超欠挖轮廓线，表明隧道各类围岩的超欠挖曲线具有自相似性。在此基础上，进一步分析了各类围岩超欠挖曲线的分形维数与围岩类别之间的关系。研究表明，隧道围岩超欠挖曲线分形维数能较为直观地反映围岩类别，但其并不随着围岩类别的变化而呈线性变化；对于洞径一定的隧道，围岩超欠挖曲线的分形维数更能反映岩体结构和洞轴线之间的关系，这为准确预测掌子面前方围岩超欠挖情况奠定了理论基础。

关键词: 公路;隧道, 超欠挖, 分形几何, 节理, 洞轴线

Abstract:

Overbreak-underbreak of tunnel is a common phenomenon. To the very irregular overbreak-underbreak of tunnel, fractal geometry is a new idea. On the basis of the measured data, applying fractal geometry, it indicates that the overbreakunderbreak curve of tunnel has a self-similarity. According to analyzing the relation between rock mass classification and fractal dimension of overbreak-underbrak curve of tunnel, for a certain diameter tunnel, the fractal dimension reflects better the relation between structure of rock mass and tunnel axes. This is a basis of the prediction of the overbreak-underbreak state of the tunnel.

Key words: highway, tunnels, overbreakunderbreak, fractal geometry, joint, tunnel axes

中图分类号:

TU443

肖云华, 陈剑平, 张鹏, 张丽. 隧道超欠挖断面轮廓分形特征[J]. J4, 2010, 40(1): 153-158.

XIAO Yun-hua, CHEN Jian-ping, ZHANG Peng, ZHANG Li. Fractal Feature of Overbreak-Underbreak Figure of Tunnel Section[J]. J4, 2010, 40(1): 153-158.

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