3D numerical modeling and study of mine tremors induced by coal mining in the vicinity of major faults—A case study

Kwaśniewski, Marek; Wang, J.-A.

doi:10.1201/9781003078531-55

Cited by 6 publications

(2 citation statements)

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“…Locations of measurement points situated on lines stabilized along J line and C line were mapped on the surface of the model. In order to obtain a correct description of the horizontal deformations of the mining terrain, contact layers were introduced between the distinguished layers, this way simulating an inter-layer connection [8][9][10]. The parameters of the inter-layer connections are shown in Table 2.…”

Section: Simulation Of Rock Mass Deformations With the Use Of The Fin...mentioning

confidence: 99%

Deformations of Mining Terrain Caused by the Partial Exploitation in the Aspect of Measurements and Numerical Modeling

et al. 2020

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The article presents the results of geodetic measurements and numerical modeling of mining area deformations in the partial exploitation area of the 712/1-2 seam at the Marcel Coal Mine. An important element in this exploitation is the limitation of the length of longwalls with cavings to 130 m and 150 m, leaving an unextracted 70 m wide coal solid belt between them. Leaving the belts aimed to reduce deformations of the mining terrain, with relatively limited deposit losses. The numerical modeling of mining terrain deformations was performed using the Fast Lagrangian Analysis of Continua (FLAC) software package based on the finite difference method. The results of the geodetic measurements and computer simulations presented in the article confirm the assumption adopted during the planning stage of this exploitation about the possible significant reduction of mining terrain deformations caused by leaving the unextracted belts of coal solid between successive longwall panels.

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Section: Simulation Of Rock Mass Deformations With the Use Of The Fin...mentioning

confidence: 99%

Deformations of Mining Terrain Caused by the Partial Exploitation in the Aspect of Measurements and Numerical Modeling

et al. 2020

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“…Mitri et al [16] pointed out that rockburst may occur on the roadway surface when the rock reaches the energy storage limit. According to the researching by Kwasniewski and Wang [17], Wang and Park [18], rockburst occurrence depends on two conditions: first, the rock mass can store the considerable strain energy; second, the rock mass has stress concentration, and strain energy could be released violently. Liang et al [19] carried out acoustic emission monitoring experiments of roadway rockburst under biaxial loading.…”

Section: Introductionmentioning

confidence: 99%

Rockburst Occurrence Mechanism Based on the Self-Sustaining Time-Varying Structure of Surrounding Rock

Fan

Zhao

Wang

et al. 2020

Shock and Vibration

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Rockburst is one of the major disasters that threaten the safety of personnel and equipment underground and affect the normal production of the system. At present, there are many kinds of research on rockburst occurrence mechanisms, but most of them are based on statics and do not consider the time-varying effect of surrounding rock state. Regarding the stress state and characteristics changing with time of the surrounding rock support structure and the internal parameters after the tunnel excavation is analyzed qualitatively in this paper, the concept of the “self-sustaining time-varying structure of the surrounding rock” is put forward. The “self-sustaining time-varying structure of the surrounding rock” is regarded as a nonperiodic time-varying system with a single degree of freedom, then its dynamic characteristics are analyzed by using the momentum theorem of the particle system. The results show that when the mass of the self-sustaining time-varying structure changes with time and d m / d t < 0 , the rockburst may be induced by the free vibration with increasing amplitude. The faster the d m / d t changes, the more violent the rockburst is. This explains the rockburst occurrence mechanism from a new angle and explains the phenomenon that most rockburst occurs when σ θ was lower than σ c better.

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A new model for forecasting of land surface subsidence caused by underground extraction of deposits

Perżyło

2022

Int. J. Environ. Sci. Technol.

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3D numerical modeling and study of mine tremors induced by coal mining in the vicinity of major faults—A case study

Cited by 6 publications

References 0 publications

Deformations of Mining Terrain Caused by the Partial Exploitation in the Aspect of Measurements and Numerical Modeling

Deformations of Mining Terrain Caused by the Partial Exploitation in the Aspect of Measurements and Numerical Modeling

Rockburst Occurrence Mechanism Based on the Self-Sustaining Time-Varying Structure of Surrounding Rock

A new model for forecasting of land surface subsidence caused by underground extraction of deposits

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