摘要
采用加入无反射边界条件的DDA程序,研究了节理面对应力波传播的影响。结果表明,节理面能阻碍波的传播,有利于波的衰减,节理面越多,波的反射越强,而波的透射越弱。模拟了一个现场爆炸试验,研究爆炸产生的应力波在节理岩体中传播、衰减的规律,模拟结果与现场试验结果比较吻合。研究表明,DDA方法可以模拟节理面对应力波传播的阻碍作用,用它来模拟爆炸波在节理岩体中的传播是适用的。
The discontinuous deformation analysis （DDA） method embedded with viscous boundary condition is used to simulate blasting wave propagation in jointed rock mass. The effect of the joints on wave propagation is studied; and the results show that the joints existing in rock mass are beneficial to wave attenuation. The more joints rock mass contains, the stronger wave reflection is, and the weaker wave transmission is. A field test of underground blast is numerically investigated; the simulated results are compared with the test data; and the law of blasting wave propagation and attenuation is obtained. The results indicate that DDA is applicable to simulate the propagation and attenuation of blasting waves in jointed rock mass.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2008年第3期717-721,共5页
Rock and Soil Mechanics
基金
中国科学院武汉岩土力学所知识创新工程2007年度青年人才领域前沿项目(No.0728031Q01)
国家自然科学基金资助项目(No.50479071,No.40672191)
教育部留学回国人员科研启动基金资助项目(No.31410005450601)
湖北省人事厅留学回国人员科研启动基金资助项目(No.T000605)
关键词
DDA
爆炸波
节理岩体
无反射边界
DDA
blasting wave
jointed rock mass
viscous boundary
