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Dissertations / Theses on the topic 'Mining engineering Rock mechanics'

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Published: 4 June 2021
Last updated: 7 February 2022

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1

Prasad, Umesh. "Energy utilisation in comminution and its application to rock blasting." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26412.

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Since blasting is a comminution process, the feasibility of establishing a correlation between the Bond rod mill work index (kWh/t) and some easily measurable physico-mechanical properties relevant to blasting was investigated. Further, the concept of operating blast work index and its potential applications were explored. Four different rock types and a well documented case study of two blasts were selected for this study.<br>The work index is found to be uncorrelated with the density and unconfined compressive strength, slightly related with tensile strength, and well correlated with dynamic
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2

Garvey, Ryan J. "A study of unstable rock failures using finite difference and discrete element methods." Thesis, Colorado School of Mines, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3557944.

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<p> Case histories in mining have long described pillars or faces of rock failing violently with an accompanying rapid ejection of debris and broken material into the working areas of the mine. These unstable failures have resulted in large losses of life and collapses of entire mine panels. Modern mining operations take significant steps to reduce the likelihood of unstable failure, however eliminating their occurrence is difficult in practice. Researchers over several decades have supplemented studies of unstable failures through the application of various numerical methods. The direction of
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3

Drescher, Karsten. "An investigation into the mechanisms of time dependent deformation of hard rocks." Pretoria : [s.n.], 2002. http://upetd.up.ac.za/thesis/available/etd-07082005-141037/.

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4

Simon, Richard 1967. "Analysis of fault-slip mechanisms in hard rock mining." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35945.

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Rockbursts may cause damages to underground openings and to equipment, and constitute a major hazard to the safety of mine workers. One method that can be used to evaluate if there is a rockburst potential is to compare the stiffness of the failed rock with that of the surrounding rock mass. This method has been applied successfully in the past to rockbursts involving fracturing of the rock mass.<br>This thesis deals with the development of a similar approach for rockbursts involving a violent slip along major geological discontinuities. To evaluate the post-peak shear stiffness of a discontin
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5

Stachulak, Jozef S. "Controlled air recirculation consideration for Canadian hard rock mining." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39523.

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Recirculation of air is a widely used technique in general ventilation and air conditioning practise.<br>Interest in the application of controlled recirculation of ventilation air in mines has grown considerably in the last decade. This is evident by the number of controlled recirculation schemes which have been implemented or are being considered or planned in several countries and in different types of mines.<br>A detailed description is given of the operating and proposed schemes in South African gold and U.K. coal mines. This includes safety, dust filtration and blast contaminant removal s
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6

Satish, Hemanth. "Exploring microwave assisted rock breakage for possible space mining applications." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83932.

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As humanity prepares to migrate to the frontiers of the Moon and other planets, the area of mining in space must go along for the purpose of exploration and in-situ resource utilization. In the present work the literature that has been developed over the years in the area of mining in space as applicable to Lunar and Martian environments is reviewed. Subsequently, the key mining technologies that are most suitable for Lunar and Martian environments are identified. From the literature review, it is concluded that an optimal combination of both mechanical methods and novel energy (lasers,
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7

Wu, Long. "A study on automatic control of wheel loaders in rock/soil loading." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/289916.

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Wheel loaders are widely used in mines, construction projects, and waste processing fields due to their merits of high mobility, remarkable operational flexibility, and relative low capital cost. Automatic control of the loading process will achieve high productivity, solve the problem of shortage of experienced operators, release human workers from hazardous working environments, and reduce maintenance cost associated with machine abuse. Existing research on wheel loader control only automate the manipulator mechanism while leave the locomotion system to human operators. The research in this
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8

Roth, Karen. "Time-Dependent Rock Failure at Kartchner Caverns, Arizona." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/613408.

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Assessing long-term rock stability is an important aspect in the analysis of slopes, dam and bridge foundations, and other infrastructure. Rock behavior over tens to thousands of years must be anticipated when predicting the performance of, for example, an underground containment facility for nuclear waste. At such long time scales, the time dependence of rock failure, typically ignored in short time scale analyses, has a significant effect and must be included in the analysis. Since time-dependent rock behavior is thought to be caused by the subcritical growth of microcracks, a time-depend
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9

Mahony, Luke T. School of Mining UNSW. "Development of a laboratory facility for testing shear performance of installed rock reinforcement elements." Awarded by:University of New South Wales. School of Mining, 2006. http://handle.unsw.edu.au/1959.4/25700.

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Rock reinforcing elements provide a significant proportion of their ground control capability through offering resistance to shear movement of adjacent rock masses or blocks. This potential shear movement may take the form of sliding on horizontal bedding planes leading to strata bending; or block displacement along other geological structures such as joints or similar discontinuities. Much has been reported about this type of behaviour of rock bolts and other tendons, in theoretical concepts. However, there is a shortage of quality data available on the exact nature of this mechanism for shea
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10

Shi, Xiaobo 1963. "Intelligent control of autonomous rock excavation: Theory and experimentation." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/282264.

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Earthmoving is a common activity at mines, construction sites, hazardous waste cleanup locations, and road works. Expensive and sophisticated machines such as front-end-loaders (FEL), backhoe loaders, LHD loaders and front shovels are used for these excavation tasks. Autonomous excavation control for these machines has gained considerable attention in order to remove human operators from hazardous environments, improve productivity and utilization, reduce machine abuse, as well as decrease machine operating costs. However, automatic control of excavation tasks for many sites that require diggi
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11

Hudyma, Martin Raymond. "Analysis and interpretation of clusters of seismic events in mines." University of Western Australia. School of Civil and Resource Engineering, 2009. http://theses.library.uwa.edu.au/adt-WU2010.0054.

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Spatial clustering of seismic events in mines has been widely reported in literature. Despite obvious visual correlations between spatial clusters of seismic events and geomechanical structures in mines (such as pillars, dykes and faults), very limited research has been undertaken to utilise this information to filter seismic data. A linkage between spatial seismic event clusters and discrete rockmass failure mechanisms is tenuous and not well established using current seismic analysis techniques. A seismic event clustering methodology is proposed. The first component of the methodology uses a
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12

Becker, James B. "A Combined Field, Laboratory, and Numerical Study of Cutter Roof Failure inCarroll Hollow Mine, Carroll County, Ohio." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1366382367.

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13

Rentzelos, Theofanis. "Numerical Investigation of Rock Support Arches." Thesis, Luleå tekniska universitet, Geoteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76698.

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The Garpenberg mine, owned by the Boliden Mining group, has established a trial area at Dammsjön orebody in order to examine the possibility of increasing the productivity of the mine. The mine uses the rill mining method with a current rill height of 15 m. In order to increase the productivity, the mine is examining the possibility of increasing the height of the rill. The trial area is located at 882 m depth surrounded by dolomite on the hangingwall and quartzitic rock on the footwall side. Rock support arches have been installed, in addition to the regular support pattern, to test their eff
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14

Andersson, J. Christer. "Rock Mass Response to Coupled Mechanical Thermal Loading : Äspö Pillar Stability Experiment, Sweden." Doctoral thesis, KTH, Jord- och bergmekanik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4287.

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The geological disposal of nuclear waste, in underground openings and the long-term performance of these openings demand a detailed understanding of fundamental rock mechanics. A full scale field experiment: Äspö Pillar Stability Experiment was conducted at a depth of 450 m in sparsely fractured granitic rock to examine the rock mass response between two deposition holes. An oval shaped tunnel was excavated parallel to the σ3 direction to provide access to the experiment and also provide elevated stress magnitudes in the floor. In the tunnel floor two 1.75-m diameter 6-m deep boreholes were ex
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15

Rikberg, Heidi. "Field damage investigation and evaluation of numerical model using the collected data at Kemi Mine." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-73114.

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This Master´s Thesis studies the applicability of existing numerical model to predict the conditions in the drifts at the mine. Damage mapping, covering the existing production levels, has been carried out to study the condition of the surface support, i.e. shotcrete, mesh and rock bolts to quantify the amount of deformation visible in the tunnels. Irregularities in the floor levels were also mapped. The rock support applied varies between different areas, from only a layer of shotcrete to areas where shotcrete, mesh and cable bolts are applied sequentially. The large amount of support in some
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16

Ghosh, Rajib. "Assessment of rock mass quality and its effects on charge ability using drill monitoring technique." Doctoral thesis, Luleå tekniska universitet, Geoteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65584.

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17

Terezopoulos, N. G. "Rock mechanics design principles applied to tunnel stability in deep mining conditions." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373790.

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18

Mawdesley, Clare A. "Predicting rock mass cavability in block caving mines /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16404.pdf.

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19

Nejati, Houshin. "Analysis of physical properties and thermo – mechanical induced fractures of rocks subjected to microwave radiation." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123156.

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This doctoral thesis investigates the microwave heating process, and its influence upon the physical properties and propagation of fractures in Rocks Under Illumination (RUI).In order to best understand microwave-assisted rock fracturing, it is critical to investigate the different aspects of this process. These range from the electromagnetic study (i.e., dielectric heating and heat generation), to the mechanical aspects (i.e., heat transfer, strength reduction material mechanics and fracture mechanics), and finally to the final fracturing behaviour of RUIs (i.e., fractography). In order to un
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20

Sharpe, Colin James 1962. "Experimental effectiveness of rock fracture grouting." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/291736.

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The objective of this investigation is to experimentally determine the effectiveness of fracture sealing in welded tuff using ordinary portland cement and microfine cement grouts. Fracture grouting will most likely be used to seal fractures intersecting high level nuclear waste repositories. Fractures are potential pathways for the migration of radionuclides. Laboratory experiments have been performed on seventeen tuff cylinders. (1) tension induced cracks, (2) natural and, (3) sawcut surfaces serve as fractures. Prior to grouting, the hydraulic conductivity of the intact rock and that of the
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21

Xiao, G. C. "Rock engineering investigations for North Selby shaft insets." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376322.

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22

Rogers, Gary K. "The stability of portals in rock." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54405.

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Portals are frequently an exceedingly difficult area in terms of ground control due to the near-surface, weathered, and highly discontinuous rock mass conditions. Surface and subsurface failures involving portals were analyzed using over 500 case histories which were organized into a database. Critical factors contributing to both stability and instability were isolated, and failures were classified according to location. Correlations between rock mass classes and types of portal failure were made and a four step stability analysis methodology defined. To determine critical sections of portal
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23

Rizkalla, Maged Kamal. "Elasto-viscoplastic modelling of rock excavations." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60595.

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The first part of the thesis describes the concepts of viscoplasticity as a continuous plasticity theory highlighting different kinds of yield functions, plastic potentials and visocplastic constitutive laws.<br>A 2-dimensional elasto-viscoplastic finite element model for stress/stability analysis of mining excavations has been developed for use on microcomputers. An iterative explicit time stepping scheme is implemented. The program uses automatic time-step calculator based on equations giving a limit on the time step in an attempt to prevent numerical instability when common forms of isotrop
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24

Cassapi, V. B. "Application of rock hardness and abrasive indexing to rock excavating equipment selection." Thesis, University of Nottingham, 1987. http://eprints.nottingham.ac.uk/14359/.

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The work carried out in this thesis outlines some of the problems associated with abrasive wear in machines and other mechanical equipment used to excavate or process natural rock material. It has been stated that if the problems associated with abrasion are to be better understood, then a sound knowledge of the abrasive potential of rocks is essential. A number of common wear mechanisms are described together with existing hardness and abrasive tests. The author has investigated rock hardness and abrasiveness by the use of existing methods and subsequently, developed new correlated with the w
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25

Saharan, Mani Ram. "Dynamic modelling of rock fracturing by destress blasting." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84840.

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Rockburst control measures have been in practice with continued efforts for improvements since the beginning of the 20th century. The thesis concentrates on the evaluation of destress blasting, which is an important pro-active rockburst control measure. The concept of destress blasting is based on the fracturing of highly stressed rock mass by detonating explosive charge within it. The concept has been carried out ever since the first reported use in a Canadian coal mine circa the early 1930s. Since then, many mines across the continents have applied this technique using a trial-and-err
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26

Vicenzi, Ivan Flaviano. "Numerical modelling of underground openings in bedded rock." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0035/MQ64251.pdf.

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27

Devgan, Ashutosh 1968. "Analysis of rock fragmentation using digital image processing." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278195.

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The success of rock fragmentation due to blasting depends on many variables, such as rock properties, in-situ fracturing, and blast design. Traditionally, the size distribution of fragmented rock particles has been determined through screen sieving. Modern techniques using video images and computer image processing techniques have the potential for analyzing rock fragmentation accurately and efficiently. A procedure has been developed for analyzing rock fragmentation which uses a high-resolution video camera for capturing images in the field, and specialized computer algorithms for processing
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28

Zahiri, Hani. "A predictive GIS methodology for mapping potential mining induced rock falls." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060725.120628/index.html.

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29

Akbarnejad, Nesheli Babak. "Rock mechanics aspects of blowout self-containment." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1835.

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30

Amjad, Muhammad. "Control of ITH percussive longhole drilling in hard rock." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37697.

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This thesis aims to develop a comprehensive strategy for automatic control of the ITH percussive drilling process. Such automation would provide the benefits of improved productivity and quality in terms of penetration rate and hole deviation, as well as enhanced hole quality and machine life.<br>Analysis of field data acquired from drilling experiments performed at INCO's Little Stobie Mine is presented. As a result of this analysis, a control algorithm is formulated to enhance the drilling process efficiency. This algorithm calculates the specific energy (SE) of the rock and adjusts the appl
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31

Bétournay, M. C. "The stability of shallow stopes of hard rock mines." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28678.

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Canadian hard rock mine extraction practices have commonly created shallow stopes, 12% of which have caved to surface, from instabilities originating from stope hangingwalls, crowns or footwalls. To date, however, mine operators have applied few of the available data gathering and design tools to strike a balance between maximum economic excavation dimension and stope viability. The preference has been to use personal mining experience.<br>Several common rock mass environments are surveyed as well as the various ways in which shallow stopes have failed. It has been found that these rock masses
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32

Paventi, Mario. "Rock mass characteristics and damage at the Birchtree Mine." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40223.

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This thesis proposed a petrofabric classification of the rock mass domains and rock units encountered at the Birchtree Mine in the Thompson Nickel Belt (TNB), Manitoba. A program of field and laboratory studies has enabled the classification to be related to both geological and physical-mechanical properties. The classification has been aimed to advance TNB mining, mineral exploration and processing research.<br>The thesis also considers the genesis and nature of both inherent and mining-induced rock mass damage at the Birchtree mine. An inherent rock mass damage index, D$ sb{ rm I}$, has been
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33

Lindfors, Ulf. "Experimental study of the mechanics of rock joints." Licentiate thesis, Luleå tekniska universitet, 1996. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25833.

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34

Bedi, Anmol. "A proposed framework for characterising uncertainty and variability in rock mechanics and rock engineering." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/18998.

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This thesis develops a novel understanding of the fundamental issues in characterising and propagating unpredictability in rock engineering design. This unpredictability stems from the inherent complexity and heterogeneity of fractured rock masses as engineering media. It establishes the importance of: a) recognising that unpredictability results from epistemic uncertainty (i.e. resulting from a lack of knowledge) and aleatory variability (i.e. due to inherent randomness), and; b) the means by which uncertainty and variability associated with the parameters that characterise fractured rock mas
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35

Meyers, Anthony G. "The determination of rock mass strength for engineering design /." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phm6134.pdf.

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36

Fotoohi, Keyvan. "Nonlinear boundary element analysis of a rock mass with discontinuities." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41366.

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A boundary element model was developed for stress/stability analysis of underground excavations in the vicinity of faults. The boundary element formulation adopts the Fictitious Stress Method for the simulation of excavation boundaries and the Displacement Discontinuity Method for the representation of faults. With the assumption that deformations and stress changes can generally be attributed to the presence of faults rather than to elastoplasticity of the rock mass, the numerical model employed a linear elastic constitutive relation for the rock, and nonlinear behaviour for the fault. This a
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37

Mohammed, Marwan M. "Effects of groundwater on stability of rock and soil slopes." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28008.

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The first part of this thesis reviews in detail the state of stress due to pore water pressure, and effective stress methods in wet grounds in an attempt to present a global perspective on the subject. Through the second part of the thesis, a 2-dimensional finite element program has been developed for stress and stability analysis of wet rock and soil masses. The program uses the effective stress method which allows for a unified approach for dry and wet analysis. It computes the displacements, effective stresses and excess pore water pressure. Safety levels are then calculated in the postproc
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38

Wattimena, Ridho K. "Designing undercut and production level drifts of block caving mines /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17451.pdf.

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39

Kramadibrata, Suseno. "The influence of rock mass and intact rock properties on the design of surface mines with particular reference to the excavatability of rock." Curtin University of Technology, School of Civil Engineering, 1996. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=11287.

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The main aim of this Thesis is to examine how the rock mass and intact rock properties influence the excavatability of rock in surface mine. One of the most important decisions in the design of surface mine is the selection of mine equipment and plant. Now that increasing effort is being invested in the design and manufacture of continuous surface miners it is appropriate to examine how their performance can be related to the physical properties of the rock mass and intact rock.Over the years many attempts have been made to develop a means of assessing the excavatability of rock. Most of them
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40

Bedair, Ayman. "Digital image analysis of rock fragmentation from blasting." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40319.

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A novel digital image analysis technique to measure the size of fragments on the surface of a muck-pile is presented in this thesis. The technique takes into consideration the physical characteristics of fragment representation and measurement problems. Using an adaptive smoothing filter prior to edge detection, each fragment on the surface is represented by a group of edge segments outlining its boundaries. These segments are then grouped to form continuous contours.<br>A multi-layer analysis of the digital image is then formulated where fragments on the surface are grouped into three layers,
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41

Hadjigeorgiou, John. "A study of frictional properties of rock masses /." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59612.

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The design of traditional and novel structures, e.g. underground tunnels, dam foundations, nuclear waste depositories, requires an understanding of the behaviour of rock under different stress conditions. This thesis is part of an overall research program into the behaviour of rock masses undertaken by the Department of Mining and Metallurgical Engineering at McGill University. The main objective of this project is the determination of the appropriate stress functions that describe the response of rock to applied loads. In this work, the distinction is made between intact, single discontinuity
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42

Wei, Wei. "Numerical modelling study of rock support system for deep mine haulage drift." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95194.

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Haulage drifts are used for the transportation of blasted ore from the draw point to nearby ore pass or dumping point in sublevel mining systems. During production, haulage drifts are occupied by mine operators and haulage equipment. Therefore the stability of haulage drifts is important to the safe and uninterrupted production of a mining operation. It would be advantageous to know a priori how drift stability is influenced by mining activities in the proximity of the drift. This thesis presents the results of a study to examine drift stability and rock support system performance of a haulage
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43

Zhang, Yaohua 1963. "Nonlinear rock mass behaviour and application to stability of underground haulage drift." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99126.

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Numerical methods of analysis such as the finite element method and finite difference method have seen increasing use in recent years as tools for geomechanical mine design to predict problems of ground caving and failure. As a result of recent advances in computer technology, it is now possible to handle large-scale problems involving complex material and geometric nonlinearities at an affordable computational cost. The scope of this study is the stability of underground mine haulage drifts associated with sublevel stoping method with delayed backfill. This is one of the most popular mining m
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44

Guntumadugu, D. Raju. "Methodology for the design of dynamic rock supports in burst prone ground." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119662.

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The depth at which underground mines operate has been increasing continuously which is particularly true in the case of hard rock mining. The stability issues associated with mining at great depth pose tough challenges to engineers and researchers alike. Long-term mine developments in deep hard rock mines such as haulage drifts need to be functional during the entire life of the mine plan without posing any major stability concerns, which will otherwise hamper the production and other logistics associated with mining operations. High convergence and rockburst hazards are the main problems due
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45

Priscu, Doina Maria. "Double-porosity modelling of groundwater flow through fractured rock masses." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37280.pdf.

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46

Forrest, Peter. "Layout design for interactive zones in longwall multiple seam mining." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43854.

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<p>Appalachia requires design guidelines for the increasingly popular multi-seam longwall method. Entry layouts often depart from the ideal when finally developed. The thesis examines the occurrence of ground control problems, and possibilities for improvements in strata control, in a variety of undermining situations. The effects of upper seam loading on undermining operations are invest~gated using physical modelling. Photoelastic stress analysis is used as a powerful research tool to analyze complex multiple seam entry systems. Yield pillar use is also examined, in anticipation of their wid
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47

Cheung, William K. W. (Kwok Wai). "Inferring surface structure of rock piles from range images." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56767.

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This thesis deals with the problem of applying computer vision techniques in an underground mine environment. In particular, the problem of the localization and identification of oversized rock fragments prior to secondary breakage, following the initial drilling and blasting operation is addressed. The strategy employed is based on the methodologies developed for reconstruction and interpretation of range image data. Discrete rock pile images acquired using the NRCC/McGill laser rangefinder were used in this study. The main contribution of this thesis is the complete study of the paradigm whi
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48

Hardy, Andrew John 1965. "Fragment size distribution of in situ rock masses from drill core." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278324.

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The success of rock fragmentation by blasting and subsurface fluid flow depends on many variables, including in-situ fragmentation. This study presents select data from a review of over 13000 feet of core samples drilled at seven different mine properties in the United States and Chile. Two-dimensional computer simulations of fractures can be used to quantify the volume of rock required to calculate a stable estimate of mean fragment size. Spatial periodicity of fragment size measurements is indicated through vertical variograms and is used as the basis for a statistical analysis for the zonin
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49

Gumusoglu, M. Cetin. "Analysis of underground excavations in strain softening rock masses." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/38339.

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Reeves, Bryan Anthony. "Slope stability radar /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17049.pdf.

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