摘要
从分形几何角度分析,隧道围岩超欠挖具有自相似性,对于一定洞径的隧道,隧道围岩超欠挖曲线分形维数是岩体结构和洞轴线的函数。对于主要发育一组陡倾节理的情况研究表明,隧道围岩超欠挖曲线分形维数与节理间距呈双对数线性关系,与节理走向和洞轴线的夹角呈双对数线性关系,并建立了它们之间的多元关系。
Applying the fractal geometry, it have been indicated that the overbreak - underbreak curve of tunnel has a self-similarity, and the fractal dimension of the overbreak- underbreak of tunnel is the function of structure of rock mass and the tunnel axes. On the basis of it, to a set of steep joints, it has the double logarithm linear relation between overbreak - underbreak and joints spacing, and it has the double logarithm linear relation between overbreak - underbreak and angle between joints and tunnel axes, too. Finally, the multi-relation among them is built up.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2008年第3期455-459,共5页
Journal of Jilin University：Earth Science Edition
基金
国家自然科学基金项目(40272117)
教育部资助优秀年轻教师基金项目(120413133)
吉林大学"985"计划项目(105213200500007)
关键词
公路隧道
超欠挖
分形维数
岩体节理
洞轴线
highway tunnel
overbreak - underbreak
fractal dimension
rock mass joints
tunnel axes
