Results 251 to 260 of about 464,941 (308)

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
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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
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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 ...
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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
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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.
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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
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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
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Biogrouting of Rock Joints

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

Review of Rock Joint Models

2003
This report discusses several constitutive models for joint behavior with emphasis upon the experimental data which motivates them. Particular emphasis is placed upon data available for granite. The LDEC joint model is presented in detail and LDEC simulations using this model are compared against data from constant normal stiffness and constant normal ...
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A roughness parameter considering joint material properties and peak shear strength model for rock joints

International Journal of Mining Science and Technology, 2021
Weisheng Du, Chengzhi Qi, Xiaozhao Li
exaly