UDEC modelling on wave propagation across fractured rock masses

X. B. Zhao; J. Zhao; J. G. Cai; A. M. Hefny

doi:10.1016/j.compgeo.2007.01.001

UDEC modelling on wave propagation across fractured rock masses

X. B. Zhao, J. Zhao, J. G. Cai, A. M. Hefny

Research output: Contribution to journal › Article › peer-review

146 Citations (Scopus)

Abstract

Wave attenuation across fractured rock masses is a great concern of rock engineers to assess the safety of underground structures in and on rocks under dynamic loads. Due to the discreteness of rock masses, the universal distinct element code (UDEC) has been adopted for the study of rock mass problems. In this paper, the calibration work of UDEC modelling on P-wave propagation across single linearly and nonlinearly deformable fractures is conducted. Subsequently, numerical studies of P-wave propagation across multiple nonlinearly deformable fractures are carried out. The magnitude of transmission coefficient is calculated as a function of nondimensional fracture spacing for different numbers of fractures. The results reveals that under some circumstances, the magnitude of transmission coefficient not only increases with increasing number of fractures, but also is larger than 1.

Original language	English
Pages (from-to)	97-104
Number of pages	8
Journal	Computers and Geotechnics
Volume	35
Issue number	1
DOIs	https://doi.org/10.1016/j.compgeo.2007.01.001
Publication status	Published - Jan 2008
Externally published	Yes

Keywords

Discrete element modelling
Fractures
Rock masses
Wave propagation

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Computer Science Applications

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10.1016/j.compgeo.2007.01.001

Cite this

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title = "UDEC modelling on wave propagation across fractured rock masses",

abstract = "Wave attenuation across fractured rock masses is a great concern of rock engineers to assess the safety of underground structures in and on rocks under dynamic loads. Due to the discreteness of rock masses, the universal distinct element code (UDEC) has been adopted for the study of rock mass problems. In this paper, the calibration work of UDEC modelling on P-wave propagation across single linearly and nonlinearly deformable fractures is conducted. Subsequently, numerical studies of P-wave propagation across multiple nonlinearly deformable fractures are carried out. The magnitude of transmission coefficient is calculated as a function of nondimensional fracture spacing for different numbers of fractures. The results reveals that under some circumstances, the magnitude of transmission coefficient not only increases with increasing number of fractures, but also is larger than 1.",

keywords = "Discrete element modelling, Fractures, Rock masses, Wave propagation",

author = "Zhao, {X. B.} and J. Zhao and Cai, {J. G.} and Hefny, {A. M.}",

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T1 - UDEC modelling on wave propagation across fractured rock masses

AU - Zhao, X. B.

AU - Zhao, J.

AU - Cai, J. G.

AU - Hefny, A. M.

PY - 2008/1

Y1 - 2008/1

N2 - Wave attenuation across fractured rock masses is a great concern of rock engineers to assess the safety of underground structures in and on rocks under dynamic loads. Due to the discreteness of rock masses, the universal distinct element code (UDEC) has been adopted for the study of rock mass problems. In this paper, the calibration work of UDEC modelling on P-wave propagation across single linearly and nonlinearly deformable fractures is conducted. Subsequently, numerical studies of P-wave propagation across multiple nonlinearly deformable fractures are carried out. The magnitude of transmission coefficient is calculated as a function of nondimensional fracture spacing for different numbers of fractures. The results reveals that under some circumstances, the magnitude of transmission coefficient not only increases with increasing number of fractures, but also is larger than 1.

AB - Wave attenuation across fractured rock masses is a great concern of rock engineers to assess the safety of underground structures in and on rocks under dynamic loads. Due to the discreteness of rock masses, the universal distinct element code (UDEC) has been adopted for the study of rock mass problems. In this paper, the calibration work of UDEC modelling on P-wave propagation across single linearly and nonlinearly deformable fractures is conducted. Subsequently, numerical studies of P-wave propagation across multiple nonlinearly deformable fractures are carried out. The magnitude of transmission coefficient is calculated as a function of nondimensional fracture spacing for different numbers of fractures. The results reveals that under some circumstances, the magnitude of transmission coefficient not only increases with increasing number of fractures, but also is larger than 1.

KW - Discrete element modelling

KW - Fractures

KW - Rock masses

KW - Wave propagation

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UDEC modelling on wave propagation across fractured rock masses

Abstract

Keywords

ASJC Scopus subject areas

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