弹性纵波入射粗糙节理面透射性能研究  

RESEARCH ON TRANSMISSION BEHAVIORS OF ROUGH JOINT SURFACES WITH ELASTIC P-WAVE INCIDENCE

作　　者：茹忠亮[1,2] 蒋宇静[1] 

机构地区：[1]长崎大学工学部,日本长崎852-8521 [2]河南理工大学,河南焦作454000

出　　处：《岩石力学与工程学报》2008年第12期2535-2539,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50804014);河南省自然科学基金资助项目(2008A440005)

摘　　要：针对应力波穿过节理面产生的衰减现象,研究节理面的几何形状、法向刚度对应力波的透射性影响。根据节理面几何特性设计6种模拟节理面粗糙程度的节理模型,用UDEC软件模拟一维弹性纵波的入射问题。计算结果表明,节理面的粗糙程度、法向刚度对弹性波的透射系数影响很大,节理面越粗糙,法向刚度越小,弹性波衰减程度越大,弹性波的波速降低越快。Aiming at the attenuation of stress wave traveling through the rock joints, the influences of joint geometrical shape and stiffness on the stress wave transmission coefficient are analyzed. According to the geometrical shapes, six joint models have been designed to simulate the different rough surfaces of fracture. UDEC is adopted to simulate the wave propagation of single fracture with the six models and different stiffnesses. The modeling results of the transmission coefficient of the fracture models are compared with the theoretical solutions. It reveals that a rough joint surface distinctly affects the stress wave transmission in the jointed rocks compared with a smooth plane joint and decreases the amplitude and velocity.

关 键 词：岩石力学 节理面 弹性纵波 离散元 透射系数 

分 类 号：TU45[建筑科学—岩土工程]