Discrete element modeling of rock failure dynamics

Хан, Г. Н.

doi:10.1134/s1062739148010108

Cited by 12 publications

(8 citation statements)

References 2 publications

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“…The efficiency of DEM in blast and wave and fracture propagation was discussed in some studies. Khan employed rapid failure of a test rock specimen under cylindrical tensile wave effect [22]. The study concluded that DEM can be efficient to solve dynamic problems of rock mechanics or to control chronologically stress-strain state (SSS) of a material.…”

Section: Tension Zone Shock Wavesmentioning

confidence: 98%

Distinct element modelling of fracture plan control in continuum and jointed rock mass in presplitting method of surface mining

Sharafisafa

Aliabadian

Alizadeh

et al. 2014

International Journal of Mining Science and Technology

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Section: Tension Zone Shock Wavesmentioning

confidence: 98%

Distinct element modelling of fracture plan control in continuum and jointed rock mass in presplitting method of surface mining

Sharafisafa

Aliabadian

Alizadeh

et al. 2014

International Journal of Mining Science and Technology

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“…Впродовж усієї історії розвитку гірничої справи питання про зсуви гірських порід є актуальними та звертають на себе увагу багатьох дослідників (Dobroskok, Linkov, & Zoubkov, 2010;Semibalamut, Rybushkin, Yushkin, Fedorinin, & Sidorov, 2011;Khan, 2012;Nikiforov, 2012;Eremenko, Gahova, Esina, & Zinchenko, 2014;Nazarov, Nazarova, & Han, 2014). Такий інтерес до даної проблеми обумовлений тим, що в зону шкідливого впливу гірничих розробок нерідко потрапляють як будівлі гірничих підприємств, так і навколишні промислові, житлові та соціальні будівлі та споруди, транспортні комунікації, лінії електропе-редачі і природні об'єкти, порушення цілісності яких може на тільки викликати виникнення аварійних си-туацій на них, але й призвести до значних людських жертв (Gendler, 2014;Konovalov, 2016).…”

Section: вступunclassified

Research into the influence of technical factors on rocks deformation during reworking of ore deposits

Kulikovska¹,

Sydorenko²

2017

Min. miner. depos.

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Purpose. The aim of this work is to establish the relation of rocks deformation during reworking of ore deposits to mining and technical conditions and factors of mineral production based on the processing of surveying observations using modern software systems.Methods. During the mining geodesy surveying research, probabilistic statistical methods were applied with the use of a powerful computer package statistics relating to modern mathematical methods for processing experimental data and modeling of geomechanical processes. The correct application and solution of the stated research task is confirmed by the receipt of many significant pair and multiple correlation coefficients between the parameters under study during the reworking of ore deposit.Findings. On the basis of comprehensive analysis of surveying instrumental observations, we have determined and specified the regularities of the influence produced by technical factors on rocks deformation during reworking of ore deposits. 2-D and 3-D models developed in the research provided the possibility to obtain a visual representation of the deformation components distribution. The results of the performed regression analysis allowed to find the equations of approximations and to conclude that the studied parameters are correlated.Originality. The research allowed to establish and clarify the displacement patterns of rocks in the disturbed zone of mining at PJSC "ArcelorMittal Kryvyi Rih" caused by such factors as an active area of the roof outcrop, the time period from the beginning of the block development to the run-time of observation, the distance be-tween the working unit and the observed frame, the vertical distance between the levels of primary and secondary underground developments on the basis of the integrated use of possibilities provided by the modern standard package Statistica.Practical implications. The obtained data allow to specify the parameters of the adopted models describing rocks deformation during reworking of ore deposits, to predict their development over time and assess the risk of negative geodynamic phenomena.

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“…Hamiel et al [17] also study cylindrical granite specimens in order to develop an anisotropic constitutive model describing effective damaged material properties of granite. Khan [18] demonstrates that two-dimensional discrete element method can give varied fracture patterns in a disk loaded by a cylindrical tensile wave. We choose to model the effect of the blast loading by prescribing a single pressure pulse on the boundary of a cylinder concentric with the center of the explosion.…”

Section: Introductionmentioning

confidence: 99%

“…Hamiel et al also study cylindrical granite specimens in order to develop an anisotropic constitutive model describing effective damaged material properties of granite. Khan demonstrates that two‐dimensional discrete element method can give varied fracture patterns in a disk loaded by a cylindrical tensile wave.…”

Section: Introductionmentioning

confidence: 99%

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Blast‐induced rock fracture near a tunnel

Schreyer

Sulsky

2014

Num Anal Meth Geomechanics

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SUMMARY Damage in the form of cracks is predicted to assess the susceptibility of a tunnel to failure due to a blast. The material‐point method is used in conjunction with a decohesive failure model as the basis for the numerical simulations. The assumption of a cylindrical charge as the source for the blast allows the restriction of plane strain and two‐dimensional analyses. In the simulation, a further restriction of a single pressure pulse is used as the source of stress waves that are reflected and refracted after reaching the free surface of the tunnel wall. Three critical zones of significant cracking in the vicinity of a tunnel are identified as potential contributors to tunnel failure. Copyright © 2014 John Wiley & Sons, Ltd.

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Discrete element modeling of rock failure dynamics

Cited by 12 publications

References 2 publications

Distinct element modelling of fracture plan control in continuum and jointed rock mass in presplitting method of surface mining

Distinct element modelling of fracture plan control in continuum and jointed rock mass in presplitting method of surface mining

Research into the influence of technical factors on rocks deformation during reworking of ore deposits

Blast‐induced rock fracture near a tunnel

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