Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234764 |
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Title: | The modelling of anisotropic jointed rock slopes by physical and numerical methods | ||||
Author: | Wu, K. O. |
ISNI:
0000 0001 3573 3317
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Awarding Body: | Paisley College of Technology | ||||
Current Institution: | University of the West of Scotland | ||||
Date of Award: | 1989 | ||||
Availability of Full Text: |
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Abstract: | |||||
In this study the stabili ty and stress distribution of anisotropic
jointed rock slopes under external loading were examined. The
influence of joint orientation and mechanical characteristics on the
engineering behaviour of jointed rock slopes were included in the
investigation.
A total of four physical models were developed by using blocks of
light-weight concrete and gypsum mortar to simulate intact rocks and
joints respectively. The models were built within a confining frame
such that plane strain conditions were maintained throughout the
experiments. The stress-strain relationship and the strength of the
model blocks were determined from laboratory tests. An empirical
equation was established to represent the strength envelope of the
model material and rocks in general. The normal and shear properties
of the model rock JOints were examined, and were described by
mathematical expressions in order to facilitate the numerical studies.
Results from the physical modelling studies showed that localised
failure regions were induced and three types of failure modes were
identified. The stability and stress distribution wi thin the models
were found to be significantly influenced by the properties and system
of the jointing.
Two computer programs were developed based on the Finite Element
Method and Coupled Finite-Boundary Element Method in order to simulate
the behaviour of jointed rock masses and assessments of their
application were made in comparison with the physical modelling
results. A special finite joint element was developed to incorporate
the non-linearity and anisotropy behaviour of rock joints.
The finite element program was successfully executed and gave
reasonable results in which the principal stress distributions were
generally in agreement with those obtained from the physical models.
The finite-boundary element program on the other hand introduced
boundary incompatibility in the system and therefore led to
divergency.
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Supervisor: | Not available | Sponsor: | Not available | ||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||
EThOS ID: | uk.bl.ethos.234764 | DOI: | Not available | ||
Keywords: | Rock slope stability | ||||
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