Validation study of the distinct lattice spring model (DLSM) on P-wave propagation across multiple parallel joints

被引：38

作者：

Zhu, J. B. ^{[1
]}

Zhao, G. F. ^{[2
,3
]}

Zhao, X. B. ^{[4
]}

Zhao, J. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, LMR, EPFL ENAC IIC LMR, Stn 18, CH-1015 Lausanne, Switzerland

[2] Univ New S Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

[3] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China

[4] Nanjing Univ, NJU ECE Inst Underground Space & Geoenvironm, Sch Earth Sci & Engn, Nanjing 210093, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2011年 / 38卷 / 02期

基金：

瑞士国家科学基金会;

关键词：

Distinct lattice spring model; UDEC; Virtual wave source; Wave propagation; Rock joint; ROCK MASSES; FRACTURES; BEHAVIOR; STRESS;

D O I：

10.1016/j.compgeo.2010.12.002

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A validation study of the distinct lattice spring model (DLSM) for wave propagation problems is performed. DLSM is a microstructure-based numerical model, which is meshless and has advantages in modelling dynamic problems where stress wave propagation is important. To verify the applicability of DLSM to modelling wave propagation through a discontinuous medium, the virtual wave source (VWS) method is used to obtain analytical solutions for wave propagation across a jointed rock mass. Numerical modelling results of the commercial code UDEC are selected as the reference. The effects of particle size and lattice rotation angle on wave propagation are first studied. Then, the results of wave transmission across a single joint with a different joint stiffness and across multiple parallel joints with different joint spacings are derived with DLSM, UDEC and VWS. These results are in good agreement with each other. Therefore, the capability of DLSM to model P-wave propagation across jointed rock mass is verified, which provides confidence for the further application of DLSM to modelling more complex problems. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：298 / 304

页数：7

共 24 条

[1]

BEER G, 1986, DEV BOUNDARY ELEMENT, P191

[2]

BRADY BH, 1990, MECHANICS OF JOINTED AND FAULTED ROCK, P551

[3] Effects of multiple parallel fractures on apparent attenuation of stress waves in rock masses [J].

Cai, JG ;

Zhao, J .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2000, 37 (04) :661-682

[4]

CHEN SG, 1999, THESIS NANYANG TU SI

[5] BOUNDARY INTEGRAL ANALYSIS OF PIECEWISE HOMOGENEOUS MEDIA WITH STRUCTURAL DISCONTINUITIES [J].

CROTTY, JM ;

WARDLE, LJ .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 1985, 22 (06) :419-427

[6]

Cundall P. A., 1971, PROC INT S ROCK FRAC, V11

[7]

CUNDALL PA, 1980, PCAR180 US ARMY EUR

[8]

Ghaboussi J., 1973, ASCE J SOIL MECH DIV, V99, P833

[9]

Godman R.E., 1968, Journal of the Soil Mechanics and Foundations Division, V94, P637, DOI DOI 10.1061/JSFEAQ.0001133

[10] ULTRASONIC STUDY OF AREA OF CONTACT BETWEEN STATIONARY AND SLIDING SURFACES [J].

KENDALL, K ;

TABOR, D .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1971, 323 (1554) :321-&

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