Relevant bibliographies by topics / Hard rock pillar

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Hard rock pillar'

Author: Grafiati
Published: 26 October 2024
Last updated: 31 July 2025

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Journal articles on the topic "Hard rock pillar"

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Jessu, Kashi, Anthony Spearing, and Mostafa Sharifzadeh. "A Parametric Study of Blast Damage on Hard Rock Pillar Strength." Energies 11, no. 7 (2018): 1901. http://dx.doi.org/10.3390/en11071901.

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Pillar stability is an important factor for safe working and from an economic standpoint in underground mines. This paper discusses the effect of blast damage on the strength of hard rock pillars using numerical models through a parametric study. The results indicate that blast damage has a significant impact on the strength of pillars with larger width-to-height (W/H) ratios. The blast damage causes softening of the rock at the pillar boundaries leading to the yielding of the pillars in brittle fashion beyond the blast damage zones. The models show that the decrease in pillar strength as a co
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Kamran, Muhammad, Waseem Chaudhry, Blessing Olamide Taiwo, Shahab Hosseini, and Hafeezur Rehman. "Decision Intelligence-Based Predictive Modelling of Hard Rock Pillar Stability Using K-Nearest Neighbour Coupled with Grey Wolf Optimization Algorithm." Processes 12, no. 4 (2024): 783. http://dx.doi.org/10.3390/pr12040783.

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Pillar stability is of paramount importance in ensuring the safety of underground rock engineering structures. The stability of pillars directly influences the structural integrity of the mine and mitigates the risk of collapses or accidents. Therefore, assessing pillar stability is crucial for safe, productive, reliable, and profitable underground mining engineering processes. This study developed the application of decision intelligence-based predictive modelling of hard rock pillar stability in underground engineering structures using K-Nearest Neighbour coupled with the grey wolf optimizat
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Theron, W. J., and D. F. Malan. "Pillar design and the associated mining engineering constraints in hard rock bord-and-pillar mines." Journal of the Southern African Institute of Mining and Metallurgy 124, no. 11 (2024): 631–44. https://doi.org/10.17159/2411-9717/3413/2024.

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Practical mining aspects should be considered when conducting pillar designs for bord-and-pillar layouts. The current methodology for pillar design will result in increasing pillar sizes with depth. This affects the extraction ratio and will result in onerous ventilation requirements when cutting large pillars. A holistic approach, including all mining engineering requirements, is required to ensure that the rock engineering designs are optimized to ensure efficient mining operations and sustainable production. Bord widths should not only be a function of the rock mass ratings, but should also
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Xie, Xuebin, and Huaxi Zhang. "Research on Hard Rock Pillar Stability Prediction Based on SABO-LSSVM Model." Applied Sciences 14, no. 17 (2024): 7733. http://dx.doi.org/10.3390/app14177733.

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The increase in mining depth necessitates higher strength requirements for hard rock pillars, making mine pillar stability analysis crucial for pillar design and underground safety operations. To enhance the accuracy of predicting the stability state of mine pillars, a prediction model based on the subtraction-average-based optimizer (SABO) for hyperparameter optimization of the least-squares support vector machine (LSSVM) is proposed. First, by analyzing the redundancy of features in the mine pillar dataset and conducting feature selection, five parameter combinations were constructed to exam
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Korzeniowski, W. "Rheological model of hard rock pillar." Rock Mechanics and Rock Engineering 24, no. 3 (1991): 155–66. http://dx.doi.org/10.1007/bf01042859.

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Xu, Huawei, Derek B. Apel, Jun Wang, Chong Wei, and Krzysztof Skrzypkowski. "Investigation and Stability Assessment of Three Sill Pillar Recovery Schemes in a Hard Rock Mine." Energies 15, no. 10 (2022): 3797. http://dx.doi.org/10.3390/en15103797.

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In Canada, many mines have adopted the sublevel stoping method, such a blasthole stoping (BHS), to extract steeply deposited minerals. Sill pillars are usually kept in place in this mining method to support the weight of the overburden in underground mining. To prolong the mine’s life, sill pillars will be recovered, and sill pillar recovery could cause failures, fatality, and equipment loss in the stopes. In this paper, three sill pillar recovery schemes—SBS, SS1, and SS2—were proposed and conducted to assess the feasibility of recovering two sill pillars in a hard rock mine by developing a f
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Ile, D., and D. F. Malan. "A study of backfill confinement to reinforce pillars in bord-and-pillar layouts." Journal of the Southern African Institute of Mining and Metallurgy 123, no. 5 (2023): 223–33. http://dx.doi.org/10.17159/2411-9717/2452/2023.

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This study explores the use of backfill in hard rock bord-and-pillar mines to increase the pillar strength and extraction ratio at depth. The use of backfill will also minimize the requirement for tailings storage on surface and the risk of environmental damage. A literature survey indicated that backfill is extensively used in coal mines, but rarely in hard rock bord-and-pillar mines. To simulate the effect of backfill confinement on pillar strength, an extension of the limit equilibrium model is proposed. Numerical modelling of an actual platinum mine layout is used to illustrate the benefic
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Ma, Hai Tao, and Jin An Wang. "Dynamic Simulation Method for Hard-Rock Pillar Failure in Open-Stope Goaf." Applied Mechanics and Materials 556-562 (May 2014): 4055–60. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.4055.

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An attempt to simulate the cascading pillar collapse is made in this paper for a quick evaluation of a large number of mined-out area data that have been collected throughout China. Pillar collapse, load transfer and load redistribution are modeled by the area-apportioned method, and this methodology is general in sense and has been implemented in the expert system developed by the authors as an independent module. The proposed method can provide a quantitative criterion for determination of the failure pattern and identification of the key pillars in the stability analysis of the mined-out ar
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Napier, J. A. L., and D. F. Malan. "Numerical simulation of large-scale pillar-layouts." Journal of the Southern African Institute of Mining and Metallurgy 123, no. 5 (2023): 203–10. http://dx.doi.org/10.17159/2411-9717/2451/2023.

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A number of shallow coal or hard rock mines employ pillar mining systems as a strategy for roof failure control. In certain platinum mine layouts, pillars are designed to 'crush' in a stable manner as they become loaded in the panel back area. The correct sizing of pillars demands some knowledge of the pillar strength and the overall layout stress distribution. It is particularly important to understand the impact of the layout geometry on the effective regional 'stiffness' of the rock mass around each pillar. An important design strategy is to model relatively detailed layout configurations w
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Liu, Jiangwei, Changyou Liu, and Xuehua Li. "Determination of fracture location of double-sided directional fracturing pressure relief for hard roof of large upper goaf-side coal pillars." Energy Exploration & Exploitation 38, no. 1 (2019): 111–36. http://dx.doi.org/10.1177/0144598719884701.

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After mining the upper-goaf side, large coal pillars and part of hard roof exposed above the pillars remain. The hard roof can significantly deform the roadway by transferring high stress through coal pillars to the roadway. This paper reports the use of hydraulic fracturing technology to cut the hard roof on both sides (i.e. the broken roof slides to the goaf) to relieve the pressure. The position of the roof fracture is the key to controlling the pressure relief. The bearing characteristics of the large coal pillars and hard roof are analyzed to establish a mechanical model of the broken-roo
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Dissertations / Theses on the topic "Hard rock pillar"

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Li, Chuanqi. "Caractérisation automatique et semi-automatique des discontinuités des piliers de roche dure." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALI045.

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Le pilier de roche dure est une structure rocheuse unique qui joue un rôle toujours cEAssant dans le maintien de la stabilité de l'espace souterrain dans les mines de métaux. Cependant, des effondrements, des éclatements de roches, des éboulements locaux sur de vastes zones et d'autres catastrophes techniques défavorables sont fréquemment observés sur le pilier avec des informations de discontinuité inconnues. Les recherches sur la caractérisation des discontinuités pour améliorer la sécurité minière méritent donc d’être menées. D'autre part, avec la vulgarisation et l'application de l'intelli
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Maybee, William Gregory. "Pillar design in hard brittle rocks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0011/MQ61284.pdf.

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Jessu, Kashi Vishwanath. "Investigating the Performance of Hard Rock Pillars with Different Width to Height Ratios and the Effects of Inclination, a Discontinuity and Blasting." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/75347.

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Pillar design, a challenge in underground hard rock mines, contributes to catastrophic failure or economic loss based on its failure mechanism. Factors influencing the pillar failure mechanisms such as pillar inclination, presence of discontinuity and blasting effects were investigated with the help of laboratory tests and numerical analyses to create a design structure. Lastly, the pillar designs were evaluated by developing strain based monitoring method for pillar classification and pillar optimization.
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Lunder, Per John. "Hard rock pillar strength estimation an applied empirical approach." Thesis, 1994. http://hdl.handle.net/2429/5391.

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Pillars are present in all hard rock mining operations and in order to effectively design these pillars, an estimate of the pillar strength is required. Two new pillar strength estimation methods for hard rock mine pillars are presented in this thesis. 31 pillar case histories of the database that was used to develop these new formulae were acquired during a cooperative study, entitled “Ground Stability Guidelines for the Extraction of Barrier Pillars in Hard Rock Mines”, between Westmin Resources Ltd. and The Canadian Centre for Mineral and Energy Technology (CANMET). 147 additional case
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Mandingaisa, Omberai. "Quantification of the impacts of rock mass quality on stope width control and pillar stability in a hard rock narrow reef mine." Thesis, 2018. https://hdl.handle.net/10539/26770.

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A research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science in Engineering, 2018<br>In bord and pillar mining, pillar stability is a key element of the mining process. This is usually underpinned by successful adherence to planned mining stope width. Stope width control is the backbone to the grade control process in platinum mines on the great Dyke of Zimbabwe. Poor rock mass has always been used to explain the failures by mining personnel to me
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Books on the topic "Hard rock pillar"

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Maybee, William Gregory. Pillar design in hard brittle rocks. Mineral Resources Engineering, Laurentian University, 2000.

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Book chapters on the topic "Hard rock pillar"

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Spasojević, S., and K. Skrobic. "Examination of rock reinforcement and stability of the hard rock pillars due to the over-break and blast damage." In Expanding Underground - Knowledge and Passion to Make a Positive Impact on the World. CRC Press, 2023. http://dx.doi.org/10.1201/9781003348030-115.

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Hamediazad, Farzaneh, and Navid Bahrani. "Stability Analysis of Hard Rock Pillars Under Compressive and Shear Loading Conditions Using 2D and 3D Numerical Modeling." In Atlantis Highlights in Engineering. Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-258-3_80.

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Jeremic, M. L. "Mine pillar structures." In Ground Mechanics in Hard Rock Mining. CRC Press, 2020. http://dx.doi.org/10.1201/9781003079217-8.

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Andersson, Christer, Mikael Rinne, Isabella Staub, and Toivo Wanne. "The On-Going Pillar Stability Experiment at the Äspö Hard Rock Laboratory, Sweden." In Coupled Thermo-Hydro-Mechanical-Chemical Processes in Geo-Systems - Fundamentals, Modelling, Experiments and Applications. Elsevier, 2004. http://dx.doi.org/10.1016/s1571-9960(04)80072-7.

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Ching, Barbara. "Dying hard: Hard country at the finish line?" In Wrong’s What I do Best. Oxford University PressNew York, NY, 2001. http://dx.doi.org/10.1093/oso/9780195108354.003.0006.

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Abstract In the ’70s, as Owens’s career was fading, the much-heralded Outlaw movement, led by Waylon Jennings and Willie Nelson (but including a range of others),1 managed to buck the system in ways very similar to Owens’s. Like Owens, the Outlaws armed themselves with Telecasters and a rock beat, and then insisted on the right to produce their own music. Like Owens, they preferred show venues like Manhattan’s hip Max’s Kansas City or massive festivals and arenas to the staid and low-paying Opry. “Who listens to the Opry nowadays? Ain’t nobody out there listening anymore,” Jennings told Peter
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Djerassi, Carl. "A softer chemist." In This Man’s Pill. Oxford University PressOxford, 2001. http://dx.doi.org/10.1093/oso/9780198508724.003.0009.

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Abstract Until 1969, I would have described myself as a ‘hard’ scientist, the proudly macho adjective employed by chemists and other physical scientists to distinguish their work from the ‘soft,’ fuzzy fields such as sociology or even psychology. Next to physics, chemistry is the hardest of the hard sciences, the rock on which the biomedical, environmental, and material sciences all build their molecular edifices. Chemistry—the molecular science par excellence—also tends to pride itself on the social corollary of its flinty strength: it is the most insular of the hard sciences. In academia, we
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Reddy, M. N., R. Venugopala Rao, S. Naik, and R. N. Gupta. "Novel approach to optimise the dimensions of pillars in underground hard rock mine." In Geoecology and Computers. Routledge, 2018. http://dx.doi.org/10.1201/9780203753620-77.

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Pytel, Witold, Bogumila Palac-Walko, and Piotr Mertuszka. "Geomechanical safety aspects in hard rocks mining based on room-and-pillar and longwall mining systems." In Minefill 2020-2021. CRC Press, 2021. http://dx.doi.org/10.1201/9781003205906-26.

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Clarke, Katherine. "Geographical and Historiographical Traditions." In Between Geography and History. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780199240036.003.0001.

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Abstract ‘Where are you going from here?’ Gilles asked. ‘South, to Sartene and Bonifacio.’ ‘Bonifacio is a very pretty place. You know Homer’s Odyssey? Bonifacio is where the Laestrygonians live.’That was beautiful, that he referred to the distant little port, not for a good restaurant or a luxury hotel or its fortress or a trivial event, but as the place where a group of savage giants had interfered with Ulysses. When it comes to literary allusions you can’t do much better than use the authority of the Odyssey to prove that your home town was once important. In Gibraltar Sir Joshua Hassan had
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Gratzer, Walter. "Dr Pincus’s pill." In Eurekas and euphorias. Oxford University PressNew York, NY, 2002. http://dx.doi.org/10.1093/oso/9780192804037.003.0154.

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Abstract The birth-control pill is associated with the names of Gregory Pincus, John Rock, and Carl Djerassi—the physiologist, the doctor, and the organic chemist— and quite a number of others, for many man-years of patient research went into its development. Much of the initial impetus came from Margaret Sanger, who had sought to liberate women from the tyranny of unwanted pregnancies, and the philanthropist Katherine McCormick. The first success came in 1955, when Rock, a professor at Harvard Medical Scool and an expert on fertility, began cautiously testing the effect of the hormone analogu
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Conference papers on the topic "Hard rock pillar"

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Wedding, Z., Z. Agioutantis, and J. Calnan. "Preliminary Laboratory Results of Irregularly Shaped Specimens Modeled After Irregularly Shaped Stone Pillars." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0145.

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ABSTRACT Underground stone or hard rock mines typically employ the room-and-pillar mining method. Room-and-pillar mines are designed in traditional patterns with square or rectangular shaped pillars. This method is favorable because the symmetric pattern aids in optimizing mining operations. In active mines, deviations from the mine plan often result in irregularly shaped pillars. In older mines, which were designed when pillar design methodology was less developed, irregularly shaped pillars are more common than in current operations. The performance of hard rock pillars is primarily based on
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Dzimunya, N. Z., and Y. Fujii. "A Proposed Framework to Estimate Pillar Strength in Room-And-Pillar Hard Rock Mines." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0116.

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ABSTRACT: Pillar strength determination is a fundamental aspect of room-and-pillar mine design. Pillars are left between excavated rooms to maintain stability by restraining the hanging wall. In a typical mining environment, pillars of different rock mass conditions and geological characteristics are cut, resulting in variations in pillar strength. This is because pillars are highly anisotropic and cannot always be formed according to design dimensions. Consequently, unstable pillars may be present, requiring site-specific calibrated methods for ongoing monitoring and strength estimation. Pill
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Moyo, S., T. Chikande, T. Zvarivadza, et al. "Investigation into the Rock Mass Response to Pillar Extraction in a Hard Rock Tabular Mine." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-1011.

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ABSTRACT: Historically, secondary pillar extraction has been successful in the soft rock mining environment. Several hard rock platinum mines have conducted selective remnant extraction with backfill as a regional support measure. A hard rock tabular platinum mine instigated the extraction within a non-yield pillar layout without backfill support. The mine is situated within the Great Dyke of Zimbabwe in a shallow depth environment of approximately 100m. Pillar extraction without backfill in a hard rock mine is a novel mining method. A study was carried out to make a quantitative comparison be
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Ladinig, T., H. Wagner, and M. Grynienko. "Need and Design of a Field Test to Improve the Knowledge on Strength and Behavior of Massive Hard-Rock Pillars in Deep Mines." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0400.

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ABSTRACT Pillars have a central role in an active stress management approach, which has been proposed for the extraction of thick tabular and massive hard-rock mineral deposits. A mining method making use of this approach, is the novel raise caving mining method. Initially, the pillars have width-to-height ratios of 5 to 10. In the course of stope extraction, the dimensions of the pillars are altered, namely the height of pillars is increased and the width of pillars may be decreased. Consequently, the pillar strength is reduced and pillar crushing is triggered. A stable crushing process must
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Belzer, B. E., and N. Gupta. "Three-Dimensional Salt-Pillar Equations and Their Applications to Industry." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0566.

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ABSTRACT Salt-pillar equations were developed over 25 years ago to assist with mine design. Pillar design is important for salt mines because the pillar size influences convergence of underground drifts with equipment clearance and headroom constraints, subsidence at the surface, and functional life of ground support. Current methodologies for salt-pillar design include using numerical-modeling techniques and salt-pillar-design equations as a method for estimating stresses and deformation rates. In this paper, three-dimensional simulations of square and rectangular salt pillars were performed,
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Jovanović, Saša, Ognjen Popović, Jasna Tolmač, et al. "Comparison between different methods for room and pillar design in underground hard rock mining." In Rudarstvo i geologija danas. Rudarski institut d.o.o. Beograd, 2024. https://doi.org/10.5937/rgd240015j.

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Designing a mine using room and pillar mining method (R&amp;P) represents complicated task. Choosing the dimensions of pillar is a very sensitive subject, since it is directly connected with room stability and exploitation factor of ore body, because some part of ore body stays in pillars. This paper will compare multiple ways to correctly calculate dimensions of pillar and rooms, so that room stability wouldn't be endangered and, at the same time, to excavate as much ore body as possible, to enhance efficiency.
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Deng, Jian. "The induced mechanism of pillar rockbursts in deep hard rock mines." In Seventh International Conference on Deep and High Stress Mining. Australian Centre for Geomechanics, Perth, 2014. http://dx.doi.org/10.36487/acg_rep/1410_49_deng.

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Bahrani, Navid, Soheil Sanipour, and Farzaneh Hamediazad. "The strength of massive to moderately jointed hard rock masses for tunnel and pillar designs." In Deep Mining 2024: Proceedings of the 10th International Conference on Deep and High Stress Mining. , Perth, 2024. http://dx.doi.org/10.36487/acg_repo/2465_73.

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Al Maharbi, Khalid, Younis Al Masoudi, Mohammed Al Yaarubi, et al. "Hard Rock Drilling Strategy for Barik/Miqrat Vertical Wells in Block-61." In SPE Conference at Oman Petroleum & Energy Show. SPE, 2025. https://doi.org/10.2118/225032-ms.

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Abstract This paper outlines a robust hard rock drilling strategy for Barik and Miqrat wells in Block-61, which was designed to address the challenges posed by highly abrasive and compressive formations. The objective is to enhance drilling efficiency, optimize the Rate of Penetration (ROP), reduce bit damaged, and achieve significant reductions in both well duration and well cost. The strategy includes both short-term operational improvements and long-term technological innovations. The strategy approach was developed based on three phases; short-term, long-term and future long-term, which fo
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Yao, M., and D. Landry. "Seismic Risk Management Practices at Vale's Sudbury Operations." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0616.

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ABSTRACT: Vale Base Metals has been operating many underground mines in the Sudbury Basin for over a century and all mines have experienced a significant increase in the number of major seismic events over the last decade. Various mitigation strategies have been developed at Vale's North Atlantic Operations in Ontario to manage and control the risks associated with seismicity and rockbursts. The mines have seen a significant increase in the number of large seismic events, but the overall trend of rockbursts is decreasing. This paper will focus on Seismic Risk Management Strategies developed ov
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