Reasonable sets of input parameters and output distributions for simulation of seismicity

Linkov, A. M.; Rybarska-Rusinek, Liliana; Zoubkov, Victor V.

doi:10.1016/j.ijrmms.2016.02.004

Cited by 2 publications

(6 citation statements)

References 7 publications

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“…4.2 Application to mining 4.2.1 Initial geometry. The input geometry was those previously considered in the paper by Linkov et al (2016). It corresponds to mining of the seam Fifth in Severnaya Mine of the Vorkuta coal district in April 2013 Figure 3.…”

Section: Examples Illustrating Efficiency Of the Methods Developedmentioning

confidence: 99%

“…The final number of unknowns was 4,860. The mining conditions are also those considered in the paper by Linkov et al (2016). In particular, the mining depth is H = 870 m, the elasticity modulus of rock is E = 37 GPa, the Poisson's ratio is = 0.25 and the principal vertical stress is s 11 = À21.75 MPa.…”

Section: Examples Illustrating Efficiency Of the Methods Developedmentioning

confidence: 99%

“…4.2.4 Initial flaws. The previous simulations for this panel (Linkov et al, 2016) were performed under limitations on the time expense required for conventional accounting for pair-wise influence of flaws. They used seeding of 20,000 initial flaws.…”

Section: Examples Illustrating Efficiency Of the Methods Developedmentioning

confidence: 99%

“…In this paper, we focus on the bottleneck, which is specific for numerical modeling of seismic and aseismic events and which had not been tackled yet. It is caused by the need to account for the influence of a large number N a of already activated flaws (sources of events) on a large number N na of flaws, which are non-activated but may be activated by events of the group N a (Salamon, 1993;Malovichko, 2013;Linkov et al, 2016). The total number of arithmetic operations on a single time step, being proportional to N a Â N na , leads to extreme time cost on multiple time steps when the numbers N a and N na are of orders used in practical calculations (hundreds, thousands and tens of thousands).…”

Section: Introductionmentioning

confidence: 99%

“…Since the pioneering work by Salamon (1993), numerical simulation of seismicity made remarkable progress. In the past decade, modeling of seismic and aseismic events has got increasing applications in industry to better interpret observed seismicity, quantify uncertain parameters, play scenarios, improve design and planning, control safety in mines and increase efficiency of hydraulic fracturing (Du et al, 2008;Dobroskok and Linkov, 2006;Cipolla et al, 2011;Kresse et al, 2011;Malovichko, 2013;Malovichko and Basson, 2014;Linkov et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Speeded simulation of seismicity accompanying mining and hydrofracture

Rybarska-Rusinek

Rejwer-Kosińska

Linkov

2018

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Purpose At present numerical simulation of seismicity, used in mining and hydraulic fracturing practice, is quite time expensive what hampers its combined employing with observed seismicity in real time. The purpose of this paper is to suggest a mean for drastic speeding up numerical modeling seismic and aseismic events. Design/methodology/approach The authors propose the means to radically decrease the time expense for the bottleneck stage of simulation: calculations of stresses, induced by a large group of already activated flaws (sources of events), at locations of flaws of another large group, which may be activated by the stresses. This is achieved by building a hierarchical tree and properly accounting for the sizes of activated flaws, excluding check of their influence on flaws, which are beyond strictly defined near-regions of strong interaction. Findings Comparative simulations of seismicity by conventional and improved methods demonstrate high efficiency of the means developed. When applied to practical mining and hydrofracturing problems, it requires some two orders less time to obtain practically the same output results as those of conventional methods. Originality/value The proposed improvement provides a means for simulation of seismicity in real time of mining steps and hydrofracture propagation. It can be also used in other applications involving seismic and aseismic events and acoustic emission.

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Section: Examples Illustrating Efficiency Of the Methods Developedmentioning

confidence: 99%

Section: Examples Illustrating Efficiency Of the Methods Developedmentioning

confidence: 99%

Section: Examples Illustrating Efficiency Of the Methods Developedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Speeded simulation of seismicity accompanying mining and hydrofracture

Rybarska-Rusinek

Rejwer-Kosińska

Linkov

2018

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Assessment of seismic hazard in mines

Malovichko

2020

RJS

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The assessment of seismic hazard in mines has several peculiarities compared to the similar assessment for tectonic earthquakes: (a) in mines seismicity is typically induced by the extraction of rocks, what makes the assessment of hazard depends on the planned mining sequence, (b) many seismic events in mines have source mechanisms different from the mechanisms of tectonic earthquakes, (c) the likelihoods of both strong ground motion from distant seismic events and localized sudden inelastic deformation on the contour of excavations are of interest, (d) the spatial distribution of seismic hazard may experience significant change over relatively short periods of time (several years), which makes it possible to implement rigorous testing of the hazard forecasts, selection of optimal forecast method and its calibration. This paper provides a brief review of recent publications on the assessment of seismic hazard in mines. The method of intermediate- and long-term hazard forecast based on the combination of observed seismicity and seismicity modeled for the planned mining sequence is discussed in detail. The application of this method at the acting underground mine in Australia is presented.

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Reasonable sets of input parameters and output distributions for simulation of seismicity

Cited by 2 publications

References 7 publications

Speeded simulation of seismicity accompanying mining and hydrofracture

Speeded simulation of seismicity accompanying mining and hydrofracture

Assessment of seismic hazard in mines

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