Effect of opening on the shear behavior of a rock joint

被引：27

作者：

Oh, Joung ^{[2
]}

Kim, Gyo-Won ^{[1
]}

机构：

[1] Kyungpook Natl Univ, Dept Geol, Taegu 702701, South Korea

[2] Parsons Brinckerhoff Inc, PB Geotech & Tunneling, New York, NY 10119 USA

来源：

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT | 2010年 / 69卷 / 03期

关键词：

Joint model; Joint opening; Dilatancy; Direct shear test; Numerical simulation;

D O I：

10.1007/s10064-010-0271-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Irregularity of rock joints is an important parameter which can enhance the stability of potentially removable rock blocks or wedges around an underground opening. When irregular-sided blocks or wedges are bounded by joints, additional shear strength develops as a consequence of the confinement. With open joints, the interlock effect is reduced or lost and the shear strength drops, possibly to its residual value. A joint opening model has been developed that considers the effect of strength loss along the joint as a result of opening. The model relates the geometric parameters and stress-displacement and can easily be incorporated into existing joint models. Several numerical simulations of direct shear tests are presented to demonstrate the performance of the joint opening model.

引用

页码：389 / 395

页数：7

共 16 条

[1]

ALVAREZ TA, 1995, P 35 US S ROCK MECH, P665

[2] FUNDAMENTALS OF ROCK JOINT DEFORMATION [J].

BANDIS, SC ;

LUMSDEN, AC ;

BARTON, NR .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 1983, 20 (06) :249-268

[3]

Bandis SC., 1985, Proceedings of the international symposium on fundamentals of rock joints, Bjorkliden, September 1985, Centek, Lulea, Sweden, P345

[4]

Barton N., 1982, Modelling rock joint behaviour from in situ block tests: implications for nuclear waste repository design

[5]

BARTON N, 1977, ROCK MECH, V1, P1

[6]

BJERRUM L, 1963, P AM SOC CIVIL ENG, V89, P300

[7]

Cording E.J., 1971, S UND ROCK CHAMB ASC, P567

[8]

DEERE DU, 1967, DESIGN SURFACE SURFA, P237

[9]

FLAMAND R, 1994, CAN GEOT C, P253

[10]

Goodman R.E., 1976, Methods of Geological Engineering in Discontinuous Rocks, P472

← 1 2 →