ON USING DEM FOR SIMULATING RESPONSE OF JOINTED ROCK TO UNDERGROUND EXPLOSION
ON USING DEM FOR SIMULATING RESPONSE OF JOINTED ROCK TO UNDERGROUND EXPLOSION
Jiao Yuyong1，2，Zhao Jian1，3
(1School of Civil and Environmental Engineering，Nanyang Technological University， Singapore 639798) (2Institute of Rock and Soil Mechanics，The Chinese Academy of Sciences， Wuhan 430071 China) (3College of Architecture and Civil Engineering，China University of Mining and Technology， Xuzhou 221008 China)
Abstract：To verify the capability of 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.
. ON USING DEM FOR SIMULATING RESPONSE OF JOINTED ROCK TO UNDERGROUND EXPLOSION[J]. 岩石力学与工程学报, 2004, 23(S2): 4936-4940.
Jiao Yuyong1，2，Zhao Jian1，3. ON USING DEM FOR SIMULATING RESPONSE OF JOINTED ROCK TO UNDERGROUND EXPLOSION. , 2004, 23(S2): 4936-4940.
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2004, Vol. 23 
