DEM–SPH simulation of rock blasting

Fakhimi, A.; Lanari, M.

doi:10.1016/j.compgeo.2013.08.008

Cited by 107 publications

(24 citation statements)

References 13 publications

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“…The attenuation curves of the pressure and particle peak velocity (PPV) along the radial direction were determined, and the summarized theoretical formulae are deemed to be reasonable through comparison with previous theoretical formulae. Additionally, comparisons of blasting tests separately carried out by the DEM-SPH hybrid method [52] and ALE/JH-2 method demonstrate similar crack patterns formed both in intact rock disks and jointed rock disks. This demonstrates that the computational and extrapolated parameters are reasonable for the JH-2 constitutive model of rock materials.…”

Section: Determination Of Damagementioning

confidence: 84%

Johnson–Holmquist-II(JH-2) Constitutive Model for Rock Materials: Parameter Determination and Application in Tunnel Smooth Blasting

2018

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The Johnson–Holmquist-II(JH-2) model is introduced as the constitutive model for rock materials in tunnel smooth blasting. However, complicated and/or high-cost experiments need to be carried out to obtain the parameters of the JH-2 constitutive model. This study chooses Barre granite as an example to propose a quick and convenient determination method for the parameters of the JH-2 model using a series of computational and extrapolated methods. The validity of the parameters is verified via comparing the results of 3D numerical simulations with laboratory blast-loading experiments. Subsequently, the verified parameter determination method, together with the JH-2 damage constitutive model, is applied in the numerical simulation of smooth blasting in Zigaojian tunnel, Hangzhou–Huangshan high-speed railway. The overbreak/underbreak induced by rock blasting and joints/discontinuities is well estimated through comparing the damage contours resulting from the numerical study with the tunnel profiles measured from the tunnel site. The peak particle velocities (PPVs) of the near field are extracted to estimate the damage scope and damage degree for the surrounding rock mass of the tunnel on the basis of PPV damage criteria. This method can be used in the excavation of rock tunnels subjected to large strains, high strain rates, and high pressures, thereby reducing safety risk and economic losses.

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Section: Determination Of Damagementioning

confidence: 84%

Johnson–Holmquist-II(JH-2) Constitutive Model for Rock Materials: Parameter Determination and Application in Tunnel Smooth Blasting

2018

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“…With the increasing scale of these operations, a proper design of blasts and control as well as prediction of blast results has become imperative in most operations [1][2][3][4][5]. The capability of predicting the dynamic response of the rock mass is important, so that the effect of various blast design parameters and explosive types can be investigated with field experiments and numerical simulations [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the complete rock blasting response by SPH–DAM–FEM approach

Chen

et al. 2015

Simulation Modelling Practice and Theory

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“…It utilises a strong form of equations of continuum mechanics (Gingold and Monaghan 1977;Lucy 1977;Monaghan 1992). The SPH (often in combination with DEM) has been applied in geomechanics to model ductile failure and hydrofracturing (Komoroczi et al 2013), rock blasting (Fakhimi and Lanari 2014), intersecting discontinuities and joints in geomaterials (Pramanik and Deb 2015), fast landslides (Clearly and Prakash 2004;Pastor et al 2011), geophysical flows (Clearly and Prakash 2004) and fluidised soils (Rodriguez-Paz and Bonet 2005;Pastor et al 2009). However, several important shortcomings of the SPH method such as instabilities in tension and the accuracy inferior to that of the finite element method, have been recognised in the literature .…”

Section: Meshless Methods Of Continuum Mechanicsmentioning

confidence: 99%

Computational monitoring in real time: review of methods and applications

Dyskin

Başarır

Doherty

et al. 2018

Geomech. Geophys. Geo-energ. Geo-resour.

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Continuous monitoring of mechanical parameters determining the state of natural and manmade systems is essential in a wide range of engineering disciplines from mechanical to civil and geotechnical engineering. To be effective, the monitoring response time needs to be commensurate with the characteristic time of variation of the processes being monitored e.g. from seconds as for example in some machinery, to weeks and months for mining excavations and years in the case of structures. The methods of measurement can therefore differ significantly for different applications. In spite of this, the methods of information processing-the computational monitoring-have considerable commonality. This review focuses on the methods of computational monitoring in solid and structural mechanics problems in different engineering applications. The traditional methods of monitoring are reviewed along with the corresponding computational and measurement methods. The basic principles of the computational monitoring in real time are established.

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DEM–SPH simulation of rock blasting

Cited by 107 publications

References 13 publications

Johnson–Holmquist-II(JH-2) Constitutive Model for Rock Materials: Parameter Determination and Application in Tunnel Smooth Blasting

Johnson–Holmquist-II(JH-2) Constitutive Model for Rock Materials: Parameter Determination and Application in Tunnel Smooth Blasting

Numerical simulation of the complete rock blasting response by SPH–DAM–FEM approach

Computational monitoring in real time: review of methods and applications

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