Investigating the scale-dependency of the geometrical and mechanical properties of a moderately jointed rock using a synthetic rock mass (SRM) approach

被引：104

作者：

Farahmand, K. ^{[1
]}

Vazaios, I. ^{[1
]}

Diederichs, M. S. ^{[1
]}

Vlachopoulos, N. ^{[1
]}

机构：

[1] Queens Univ, Dept Geol Sci & Geol Engn, Bruce Wing,Miller Hall 36 Union St, Kingston, ON K7L 3N6, Canada

来源：

COMPUTERS AND GEOTECHNICS | 2018年 / 95卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Synthetic rock mass (SRM); Discrete fracture networks (DFN); Scale -dependency rockmass strength and deformability; Representative elementary volume (REV); LiDAR; STRENGTH; PHOTOGRAMMETRY; COALESCENCE; FAILURE; STRESS; DAMAGE; MODEL; SITE;

D O I：

10.1016/j.compgeo.2017.10.002

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A synthetic rock mass (SRM) model coupling discrete fracture networks (DENs) and a discrete element grain based model (DEM) is used to characterize the mechanical properties of moderately jointed rockmasses under confined and unconfined conditions. The scale dependency of the rockmass properties is investigated using the concept of representative element volume (REV). The numerical results are compared with the estimated values from empirical methods. It is determined that the empirical Hoek-Brown criterion correctly estimates the unconfined strength of the rockmass with non-persistent joints, while it overestimates the strength under confined conditions. An S-shaped strength envelope is obtained from the numerical results.

引用

页码：162 / 179

页数：18

共 71 条

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