Results 251 to 260 of about 32,671 (309)

closure of rock joints

Journal of Geophysical Research: Solid Earth, 1986
Previously we verified experimentally that a generalized form of the Greenwood‐Williamson theory describing the elastic contact of two random surfaces adequately predicts the closure of joints in fused silica glass samples. Here we present a similar analysis for experiments on rock.
Stephen R. Brown, Christopher H. Scholz
openaire   +2 more sources

The effects of rock joint characteristics and normal stress level on the stiffness of rock joints

Arabian Journal of Geosciences, 2020
The present research aims to study the effects of normal stress level on the rock joint stiffness. In addition, the sample size effect was also taken into consideration. A total of 96 direct shear tests on samples with various sizes and different rock materials were conducted and extensively analyzed.
Milad Abolfazli, Ahmad Fahimifar
openaire   +2 more sources

The shear strength of rock and rock joints

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1976
Abstract Rock joints exhibit a wide spectrum of shear strength under the low effective normal stress levels operating in most rock engineering problems. This is due to the Strong influence of surface roughness and variable rock strength. Conversely, under the high effective normal stress levels of interest to tectonophysicists the shear strength ...
openaire   +1 more source

Finite element for rock joints and interfaces

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1973
The objective of this paper is to present a method for dynamic stress analysis of saturated soil structures subjected to earthquake loading. The soil is idealized as a fluid saturated porous solid. The coupled equations of motion of the finite element discretized system are solved by a step-by-step integration scheme to determine the motion of the ...
Jamshid Ghaboussi, Edward L. Wilson, Jeremy Isenberg   +2 more
openaire   +1 more source

Implications of Joint Properties on the Strength of a Jointed Rock Mass

Advances in Unsaturated Soil, Geo-Hazard, and Geo-Environmental Engineering, 2011
In order to minimize the environmental and physical hazards of rock slope failures in deep open cut mines, evaluation of rock mass strength with a reasonable degree of accuracy is required. The task is made much more difficult due to the presence of discontinuities or joints, as the strength of a rock mass depends on both the strength of intact rock ...
P. L. P. Wasantha, P. G. Ranjith, A. Haque, J. Kodikara, A. Bouazza   +4 more
openaire   +1 more source

Mechanics of Jointing in Rocks

Geological Magazine, 1959
AbstractThe current theories dealing with the mechanics of joint development are discussed critically. An analysis of the stress conditions which can exist in competent rocks in the crust is presented. The conclusion is reached that “Master” and “Regional” Joints can be, generically, either “tensional” or “shear” structures.
openaire   +1 more source

Effect of Joint Geometry and Transmissivity on Jointed Rock Hydraulics

Journal of Engineering Mechanics, 1999
The effect of joint geometry parameters (joint orientation, joint density, and joint size) and joint transmissivity on the hydraulic properties of jointed rock blocks was examined in two dimensions using joint networks with two joint sets through numerical experiments.
Bibhuti B. Panda, P. H. S. W. Kulatilake
openaire   +1 more source

Progressive failure of jointed rocks

International Journal of Rock Mechanics and Mining Sciences, 2004
As jointed rocks consist of joints embedded within blocks of ‘intact’ rock, the behaviour of these rocks will depend on the behaviour of the joints and the intact rock blocks. In jointed rocks, there are two levels of heterogeneity: (1) the differences in properties between the rock blocks and the joints and (2) the heterogeneity within the rock blocks
Tham, LG, Yang, TH, Tang, CA
openaire   +3 more sources

Biogrouting of Rock Joints

Geo-Congress 2020, 2020
Chuangzhou Wu, Jian Chu, Shifan Wu
openaire   +1 more source

Rock joints — BEM computations

1995
Publisher Summary This chapter discusses the boundary element methods that allow the modeling of a continuum, which contains joints and faults. The two main methods of analysis described are the displacement discontinuity method and the multiregion boundary element method.
G. Beer, B.A. Poulsen
openaire   +1 more source