Relevant bibliographies by topics / Rock blasting modelling

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  2. Dissertations / Theses
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Academic literature on the topic 'Rock blasting modelling'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Rock blasting modelling"

1

Zou, Baoping, Zhipeng Xu, Jianxiu Wang, Zhanyou Luo, and Lisheng Hu. "Numerical Investigation on Influential Factors for Quality of Smooth Blasting in Rock Tunnels." Advances in Civil Engineering 2020 (September 7, 2020): 1–17. http://dx.doi.org/10.1155/2020/9854313.

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The quality of smooth blasting including the volume of over-/underbreak and blasting-induced damage of surrounding rocks has been extensively considered to be highly correlated to both the cost and advancement rate of rock tunnelling excavated by the drill-blast method. A general control strategy for smooth blasting is too difficult to be available due to the uncertainties and complexity of rock masses, as well as the varying blasting operations. As prerequisite for the evaluation of the blasting quality, effective identification of the influential factors affecting smooth blasting usually plays a significant role in the improvement of smooth blasting design. Compared to the expensive and time-consuming experiments including physical modelling and field tests, numerical modelling, as a cost-efficient approach, offers an attractive alternative to investigate the influential factors in terms of weight, which might be more applicable and reliable for the optimization of smooth blasting parameters. In this case, the dominant factors and secondary factors can be quantitatively identified. Considering the dominant factors often orient the development of things; in this work, a numerical-based approach was proposed to quantitatively identify the dominant factors influencing the quality of smooth blasting. Proposed 3-dimensional blasting modelling was based on LS-DYNA to simulate the occurrence of smooth blasting in rock masses, and the erosion algorithm was also employed to determine the fracturing of jointed rocks. The orthogonal experimental design method was utilized to optimize the experimental arrangement. Seven factors with 4 levels including the perimeter hole spacing, line of least resistance, charge concentration, charging explosive, type of rock mass, detonation velocity, and drilling deviation were taken into account. The geological setting and project background of a real rock tunnel served for the Chengdu-Chongqing high-speed railway were selected as the site conditions to perform the numerical investigation. Calculated area and distance of overbreak as the observed parameters indicating the quality of smooth blasting were utilized to determine sensitivities of factors based on the range analysis of orthogonal experiments. The results suggested that the type of rock mass has the greatest influence on the blasting quality, whereas the charge concentration and detonation velocity can be considered as the secondary factors under the specific site conditions. The proposed numerical approach for assessing influential factors of quality of smooth blasting under specified geological conditions is expected to improve the parameter design and operation of smooth blasting in practical applications.
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Zhu, Fan, and Jidong Zhao. "Peridynamic modelling of blasting induced rock fractures." Journal of the Mechanics and Physics of Solids 153 (August 2021): 104469. http://dx.doi.org/10.1016/j.jmps.2021.104469.

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Sainoki, Atsushi, Muhammad Zaka Emad, and Hani S. Mitri. "Study on the efficiency of destress blasting in deep mine drift development." Canadian Geotechnical Journal 54, no. 4 (April 2017): 518–28. http://dx.doi.org/10.1139/cgj-2016-0260.

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Canadian hard rock mines continue to reach deeper deposits, which poses greater challenges to mine safety including rock burst control. Destress blasting techniques have been successfully employed in such underground mines with the aim of preconditioning highly stressed rock mass to mitigate the risk for rock burst occurrence in deep mines. In the present study, the efficiency of destress blasting is examined through a comparison between traditional and alternative numerical modelling approaches. The traditional modelling approach assumes a uniformly distributed blast-induced damage zone extending over the entire drift face, whilst the alternative modelling approach, presented herein, simulates the damage zone for each individual blast hole. In the first part of this paper, a three-dimensional numerical model of a single blast hole is constructed, whereby the extent of blast-induced damage zone is delineated. The latter part of this paper uses the single-hole model results to examine the efficiency of destress blasting as practiced in drift development in deep mines. It is demonstrated through comparison of FLAC3D numerical simulation results that the traditional modelling approach may lead to an overly optimistic indication of destress blasting efficiency when compared with the alternative modelling approach, in which a more precise simulation of the damage zones is applied.
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Tang, B., and H. Mitri. "Numerical modelling of rock preconditioning by destress blasting." Proceedings of the Institution of Civil Engineers - Ground Improvement 5, no. 2 (January 2001): 57–67. http://dx.doi.org/10.1680/grim.2001.5.2.57.

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Tang, B., and H. Mitri. "Numerical modelling of rock preconditioning by destress blasting." Ground Improvement 5, no. 2 (June 2001): 57–67. http://dx.doi.org/10.1680/grim.5.2.57.39983.

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Baranowski, Paweł, Krzysztof Damaziak, Łukasz Mazurkiewicz, Piotr Mertuszka, Witold Pytel, Jerzy Małachowski, Bogumiła Pałac-Walko, and Tristan Jones. "Destress Blasting of Rock Mass: Multiscale Modelling and Simulation." Shock and Vibration 2019 (July 21, 2019): 1–11. http://dx.doi.org/10.1155/2019/2878969.

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In this paper, a multiscale modelling and simulation of destress blasting of rock mass is presented. The proposed and novel approach combines two separate 3D solutions: the first was obtained for the small-scale problem, face(s) blasting process, and the second for the global scale problem, seismic wave propagation within very large volumes of surrounding rock mass. Both the approaches were based on explicit dynamic modelling methodology using the central difference method. In the local case, the arbitrary Lagrangian–Eulerian (ALE) procedure with the Jones–Wilkins–Lee (JWL) equation defining an explosive material was used. For this purpose, a selected volume of a rock mass comprising a blasted mining face was modelled in detail. From the numerical simulation, pressure distribution over the modelled rock was obtained, which was the basis for an initial condition for the global 3D FE model. The peak particle velocity (ppv) distribution obtained from finite element analysis was compared with experimental outcomes. A reasonable agreement between both results was achieved; therefore, the adopted multiscale modelling approach confirmed its effectiveness and that it can be successfully implemented in further engineering practice.
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Saharan, Mani Ram, and Hani S. Mitri. "A Numerical Approach for Simulation of Rock Fracturing in Engineering Blasting." International Journal of Geotechnical Earthquake Engineering 1, no. 2 (July 2010): 38–58. http://dx.doi.org/10.4018/jgee.2010070104.

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An approach for simulation of rock fracturing as a result of engineering blasting is presented in this paper. The approach uses element elimination technique within the framework of finite element method to capture the physics of engineering blasting. The approach does not require pre-placement of fracture paths which is the severe drawback of the other existing methodologies and approaches. Results of plane stress modelling for isotropic brittle rock behaviour are presented in this paper and these results are in good agreement with the existing knowledge base. The authors also review the existing approaches of numerical modelling to compare the efficacy of the element elimination technique. It is anticipated that the further developments with this approach can prove to be good experimental tool to improve engineering blasting operations.
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Baranowski, Paweł, Łukasz Mazurkiewicz, Jerzy Małachowski, and Mateusz Pytlik. "Experimental testing and numerical simulations of blast-induced fracture of dolomite rock." Meccanica 55, no. 12 (August 18, 2020): 2337–52. http://dx.doi.org/10.1007/s11012-020-01223-0.

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AbstractIn this paper, the Johnson-Holmquist II (JH-2) model with parameters for a dolomite rock was used for simulating rock fragmentation. The numerical simulations were followed by experimental tests. Blast holes were drilled in two different samples of the dolomite, and an emulsion high explosive was inserted. The first sample was used to measure acceleration histories, and the cracking pattern was analyzed to perform a detailed study of the blast-induced fracture to validate the proposed method of modelling and to analyze the capability of the JH-2 model for the dolomite. The second sample was used for further validation by scanning the fragments obtained after blasting. The geometries of the fragments were compared with numerical simulations to further validate the proposed method of modelling and the implemented material model. The outcomes are promising, and further study is planned for simulating and optimizing parallel cut-hole blasting.
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Huang, Dan, Xianyang Qiu, Xiuzhi Shi, Yonggang Gou, and Jian Zhou. "Experimental and Numerical Investigation of Blast-Induced Vibration for Short-Delay Cut Blasting in Underground Mining." Shock and Vibration 2019 (August 1, 2019): 1–13. http://dx.doi.org/10.1155/2019/5843516.

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It is essential to control the damage to the surrounding rock and engineering structures in the process of cut blasting with a single free surface in underground mining. To reduce vibration induced by cut blasting, this paper proposes short-delay cut blasting, in which blast holes that are near each other are sequentially initiated with short-delay times. Experimental tests of cut blasting were conducted in a roadway in the Shaxi copper mine to compare the peak particle velocity (PPV) and frequency characteristics of simultaneous blasting and short-delay blasting. Numerical modelling was then developed to study the influence of short-delay times on blast vibration. The accuracy of the numerical simulation was verified by the comparison of the test and simulated data of single-hole blasting. The results show that the amplitude reduction ratio (ARR) value increases gradually with the increase in delay intervals, and the vibration reduction for delay intervals smaller than 6 ms is very limited, particularly in the near field. The principal frequencies (PFs) for short-delay blasting are similar to those for simultaneous blasting, which implies that the frequencies do not increase directly with the decrease of the delay intervals. The experimental tests also show that the mean frequencies (MFs) for the 8 ms delay are slightly higher than those for the 0 ms delay blast. In the case of ensuring the rock breaking of cut blasting, longer delay intervals of 8∼10 ms are beneficial to further reduce PPV in practical blasting.
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Ning, Youjun, Jun Yang, Guowei Ma, and Pengwan Chen. "Modelling Rock Blasting Considering Explosion Gas Penetration Using Discontinuous Deformation Analysis." Rock Mechanics and Rock Engineering 44, no. 4 (January 20, 2011): 483–90. http://dx.doi.org/10.1007/s00603-010-0132-3.

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Dissertations / Theses on the topic "Rock blasting modelling"

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Paine, Andrew Steven. "The mathematical modelling of rock blasting." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315504.

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Erhie, H. E. "Mathematical aspects of the modelling of rock blasting." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235034.

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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-error approach with mixed successes. To date, the application lacks scientific base.
The aim of this thesis is to identify the governing mechanisms associated with destress blasting applications. A holistic approach is undertaken, which involves a critical analysis of the reported field evidences, development of a numerical procedure and detailed investigations at the micro-mechanical level to investigate the fracturing of rock under confinement by different types and magnitudes of explosive energy.
A numerical procedure is developed in the thesis that carries promising potential to improve the understanding on rock fracturing by explosive energy as well as provides a platform to develop means for enhancing explosive energy utilization. The procedure is validated with reported field observations.
Analyses of destress blasting is made through dynamic modelling by simulating discrete fractures using the developed procedure. A normalized parameter ℓ ci is introduced to investigate fracturing extent after destress blasts. The investigations revealed that destress blasting produces limited fractures aligned along the principal stresses. The fracturing extent reduces with the increase in the confinement. The study indicates that the current practice of destress blasting seemingly provides more psychological benefits than factual benefits from the desired destressing.
The study also introduces a non-dimensional parameter, betaij , which characterizes destressing effects. The parameter not only adequately explains destressing phenomenon, but also offers clarifications to seemingly inexplicable reported field observations of destress blasting. Local fractures around the boreholes aligned along the principal stresses are found to be the cause of reported local stress concentration and rock stiffening post to destress blasting against the desired stress relaxation and softening.
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Mortazavi, Ali. "Modelling of rock blasting in jointed media using discontinuous deformation analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0018/NQ45266.pdf.

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Books on the topic "Rock blasting modelling"

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Modelling the effects of blasting on rock breakage. Rotterdam: A.A. Balkema, 1995.

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Read, John, and Peter Stacey. Guidelines for Open Pit Slope Design. CSIRO Publishing, 2009. http://dx.doi.org/10.1071/9780643101104.

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Guidelines for Open Pit Slope Design is a comprehensive account of the open pit slope design process. Created as an outcome of the Large Open Pit (LOP) project, an international research and technology transfer project on rock slope stability in open pit mines, this book provides an up-to-date compendium of knowledge of the slope design processes that should be followed and the tools that are available to aid slope design practitioners. This book links innovative mining geomechanics research into the strength of closely jointed rock masses with the most recent advances in numerical modelling, creating more effective ways for predicting rock slope stability and reliability in open pit mines. It sets out the key elements of slope design, the required levels of effort and the acceptance criteria that are needed to satisfy best practice with respect to pit slope investigation, design, implementation and performance monitoring. Guidelines for Open Pit Slope Design comprises 14 chapters that directly follow the life of mine sequence from project commencement through to closure. It includes: information on gathering all of the field data that is required to create a 3D model of the geotechnical conditions at a mine site; how data is collated and used to design the walls of the open pit; how the design is implemented; up-to-date procedures for wall control and performance assessment, including limits blasting, scaling, slope support and slope monitoring; and how formal risk management procedures can be applied to each stage of the process. This book will assist in meeting stakeholder requirements for pit slopes that are stable, in regards to safety, ore recovery and financial return, for the required life of the mine.
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Book chapters on the topic "Rock blasting modelling"

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"Modelling of rock blasting." In Rock Fragmentation by Blasting, 343–464. CRC Press, 2009. http://dx.doi.org/10.1201/9781482288698-13.

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Szuladzinski, Gregory, and Ali Saleh. "Mechanism of smooth blasting and its modelling." In Rock Fragmentation by Blasting, 195–200. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078104-27.

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Petrosyan, M. I. "Technique of Modelling for Rock Breakage by Blasting." In Rock Breakage by Blasting, 1–36. Routledge, 2018. http://dx.doi.org/10.1201/9780203740484-1.

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Braithwaite, M., W. Byers Brown, and Alan Minchinton. "The use of ideal detonation computer codes in blast modelling." In Rock Fragmentation by Blasting, 37–44. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078104-7.

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"Blast optimisation through computer modelling of fragmentation, heave and damage." In Rock Fragmentation by Blasting, 115–24. CRC Press, 2012. http://dx.doi.org/10.1201/b13759-16.

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"Modelling the extent of damage from fully coupled explosive charges." In Rock Fragmentation by Blasting, 287–94. CRC Press, 2012. http://dx.doi.org/10.1201/b13759-39.

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Kleine, T., P. La Pointe, and B. Forsyth. "Realizing the potential of accurate and realistic fracture modelling in blasting." In Rock Fragmentation by Blasting, 449. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078104-72.

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Minchinton, Alan, and Peter M. Lynch. "Fragmentation and heave modelling using a coupled discrete element gas flow code." In Rock Fragmentation by Blasting, 71–80. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078104-11.

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Liu, Liqing, and P. D. Katsabanis. "Numerical modelling of the effects of air decking/decoupling in production and controlled blasting." In Rock Fragmentation by Blasting, 319–30. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078104-46.

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Dare-Bryan, P., B. Pugnale, and R. Brown. "Computer modelling of cast blasting to calculate the variability of swell in a muckpile." In Rock Fragmentation by Blasting, 283–93. CRC Press, 2012. http://dx.doi.org/10.1201/b13759-37.

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Journal articles
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