成都大学学报（自然科学版）2026，Vol.45Issue(2)：203-209,7.DOI:10.3969/j.issn.1004-5422.2026.02.013
基于修正g-λ模型的应力P波在节理岩体中的传播衰减研究
Study on Propagation Attenuation of Stress P-Waves in Jointed Rock Masses Based on a Modified g-λ Model
摘要
Abstract
The attenuation of stress waves caused by the reflection and transmission of stress waves in jointed rock masses under in-situ stress has not been well solved so far.Based on the coupled normal stress-closure constitutive model of joints,namely the modified g-λ model(0＜λ＜1),in which the pa-rameter λ reflects the joint weathering degree and the matching degree of joint walls.On the basis of the finite difference method,the particle velocity formulas of transmitted stress waves across single joint and multiple joints are derived by using the modified g-λ model.Through parameter analysis,the influence of various parameters on the attenuation law of transmitted waves is investigated.The results show that for half-sine incident waves,the amplitude of transmitted stress waves increases with the rise of λ value,cor-responding to weaker joint weathering.When the λ value remains constant,the transmitted wave amplitude rises with the increase of joint spacing and joint stiffness.When in-situ stress is taken into account,the transmitted waves increase with the growth of in-situ stress and λ value.The research conclusions further expand the application scope of the g-λ model.关键词
应力波/单条节理/多条节理/地应力Key words
stress wave/single joint/multiple joints/in-situ stress分类
建筑与水利引用本文复制引用
陈博,范占锋,邱洪志,谢飞鸿..基于修正g-λ模型的应力P波在节理岩体中的传播衰减研究[J].成都大学学报（自然科学版）,2026,45(2):203-209,7.基金项目
四川省科技厅科技计划资助项目(2025YFHZ0321) （2025YFHZ0321）
