Numerical simulation on rockburst of underground opening triggered by dynamic disturbance

Zhu, Wancheng; Li, Z.H.; Zhu, Ledong; Tang, Chun An

doi:10.1016/j.tust.2010.04.004

Cited by 232 publications

(65 citation statements)

References 17 publications

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“…The code was developed by considering heterogeneity and damage evolution of rock materials. In recent years, many numerical studies on rock materials have been performed using RFPA in various fields-e.g., static analysis (Tang et al 2000a, b), dynamic analysis (Zhu et al 2010(Zhu et al , 2012, creep analysis (Tang and Tang 2012) and thermal analysis (Tang et al 2011;Tang and Tang 2015). The basic theory of RFPA can be found in Tang (1997).…”

Section: Introduction To the Numerical Methodsmentioning

confidence: 99%

Determination of Dynamic Compressive and Tensile Behavior of Rocks from Numerical Tests of Split Hopkinson Pressure and Tension Bars

et al. 2016

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FEM-based numerical testing systems of the split Hopkinson pressure bar (SHPB) and the split Hopkinson tensile bar (SHTB) are established to study the characteristics of rock materials under dynamic compressive and tensile loadings. First of all, the accuracy and applicability of the numerical testing system are validated and calibrated through comparison between the laboratory measurements and the simulation results. Subsequently, the dynamic behavior of rock is analyzed in detail with the numerical testing system followed by the underlying physical mechanism. For the SHPB tests, the simulation results demonstrate that the incident waveform is determined by the striker length, the striker shape and the pulse shaper. The dynamic increase factor (DIF) of the rock specimen varies with different impact velocities, which is attributed to the strain rate effect. The rock specimen size and bar size also have effects on the DIF. In addition, the interfacial friction between the rock specimen and the bars cannot be ignored. For the SHTB tests, it is found that the incident waveform is dependent on the striker tube length and the striker tube thickness. In addition, similar to the SHPB tests, the impact velocity, rock specimen size and bar size all have strong effects on the rock dynamic tensile strength.

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Section: Introduction To the Numerical Methodsmentioning

confidence: 99%

Determination of Dynamic Compressive and Tensile Behavior of Rocks from Numerical Tests of Split Hopkinson Pressure and Tension Bars

et al. 2016

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“…From 2003 onwards, this code was extended as RFPA-Dynamics in which a new finite element method (FEM) solver is employed and more universal boundary conditions are implemented to consider the dynamic loading regime, making it a candidate for simulating the failure process of rock under dynamic loading [11,12]. Based on the first version of RFPA for static failure process analysis and RFPA-Dynamics for dynamic failure process analysis, the authors combine them to implement the failure process analysis of rock under combined static and dynamic loading.…”

Section: Extension Of the Rfpa-dynamics For Combined Static And Dynammentioning

confidence: 99%

“…(2) The second step is to implement the failure process analysis of pre-stressed rock that is triggered by dynamic disturbance. In this step, the effect of stress and displacement induced by initial static stress is incorporated into the numerical results of dynamic failure process analysis [11,12]. Thus the effect of static stress and dynamic disturbance on the rock failure can be modelled.…”

Section: Extension Of the Rfpa-dynamics For Combined Static And Dynammentioning

confidence: 99%

Numerical simulation on rock failure under combined static and dynamic loading during SHPB tests

Zhu

Bai

et al. 2012

International Journal of Impact Engineering

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109

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“…Rock burst or coalmine bump undermines the country's mining sector [5][6][7][8]. While extensive rock burst research has been conducted in China, such knowledge is still inadequate for the formulation of a prediction and control method that aids in the protection of people and goods [9][10][11][12][13]. …”

Section: Mining In China: the Current Situationmentioning

confidence: 99%

Dynamic Analysis of Deep Mining Disaster Control in China and its Application in the Ivory Coast’s Mining Activities

Kouame¹,

Yao²,

Jiang³

et al. 2017

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Abstract.With the increasing depth of mining, rock burst is on the rise. China's deep mining industry faces such a threat. A major problem of deep mining is high ground stress, which is the major factor of rock burst. Due to the complexity of the rock burst mechanisms, complexity of induced factors as well as suddenness and randomness of rock burst occurrences, studies of rock burst prediction and control for safe mine exploitation is far from satisfying.The purpose of this paper is to examine of rock burst phenomenon in order to understand both stability in rock mechanics and the prediction of instability disasters in rock mechanics for application in the Ivory Coast mining sector with reference to the current Chinese mining industry.

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Numerical simulation on rockburst of underground opening triggered by dynamic disturbance

Cited by 232 publications

References 17 publications

Determination of Dynamic Compressive and Tensile Behavior of Rocks from Numerical Tests of Split Hopkinson Pressure and Tension Bars

Determination of Dynamic Compressive and Tensile Behavior of Rocks from Numerical Tests of Split Hopkinson Pressure and Tension Bars

Numerical simulation on rock failure under combined static and dynamic loading during SHPB tests

Dynamic Analysis of Deep Mining Disaster Control in China and its Application in the Ivory Coast’s Mining Activities

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