岩土工程学报2011，Vol.33Issue(9)：1348-1356,9.
岩体中弹性波传播尺度效应的初步分析
A preliminary analysis of scale effect of elastic wave propagation in rock mass
摘要
Abstract
The propagation rules of elastic wave in rock mass with defects take on scale effect,just like the rock mass.The dynamic finite element method（DFEM） is employed to investigate the propagation rules of elastic waves at site-EC37-201-06.The whole computation area is 3.0？3.2 m2 and 15 kinds of computation scales are applied.A static finite element method（FEM） is used to study the relations of elastic wave velocities to the confined pressure and computation scales at site-EC37-101-06.The whole computation area is 1.2？1.2 m2 and 60 kinds of computation scales are applied.The ray theory is used in the former method,and the effective media theory is used in the later.The scale effect of elastic waves is obtained,but there are differences for the two methods.To establish their relations and provide a simple model for engineering computation,a semi-theoretical phase velocity equation is proposed based on the dimensionless method.Compared with the in-situ sonic velocities,seismic velocities and velocities computed by the theoretical model with randomly distributed joints,the proposed equation can be well used in rock mass.关键词
岩石动力学/弹性波/尺度效应/节理岩体/量纲分析Key words
rock dynamics/elastic wave/scale effect/joint rock/dimensional analysis分类
建筑与水利引用本文复制引用
徐松林,郑文,刘永贵,席道瑛,李广场..岩体中弹性波传播尺度效应的初步分析[J].岩土工程学报,2011,33(9):1348-1356,9.基金项目
国家自然科学基金项目 （）
中央高校基本科研业务费专项资金项目 （）
