地下爆炸作用下节理岩体力学响应的离散元法模拟

作     者：焦玉勇 赵坚 Jiao Yuyong;Zhao Jian

作者机构：Sch. of Civil and Environ. Eng. Nanyang Technol. Univ. Singapore 639798 Singapore Inst. of Rock and Soil Mech. Chinese Acad. of Sci. Wuhan 430071 China Coll. of Arch. and Civil Eng. China Univ. of Mining and Technol. Xuzhou 221008 China 

出 版 物：《岩石力学与工程学报》 (Chinese Journal of Rock Mechanics and Engineering)

年 卷 期：2004年第23卷第z2期

页      面：4936-4940页

核心收录：

学科分类：07[理学] 070102[理学-计算数学] 0701[理学-数学] 

主　　题：DEM Frequency Numerical simulation Shock wave 

摘      要：To verify the capability of discrete element method (DEM) in modeling the dynamic response of rock masses to blasting loads, two underground explosion tests are numerically investigated. Results show that rock joints can significantly affect the transmission and the attenuation of shock waves, and can therefore influence the stability of the adjacent underground structures. Rock joints act as a kind of filters through which only low-frequency components of the shock waves are allowed to pass, and the high-frequency components of the shock waves do no harm to far-field tunnels if a predominant joint set exists in between. The spacing of joint set can also remarkably affect the propagation process. It indicates that as a discontinuum-based numerical approach, DEM is good at simulating the propagation and attenuation of blasting wave in jointed rock masses, and in modeling the stability of underground structures subjected to blasting loads.