Numerical simulation of tensile damage and blast crater in brittle rock due to underground explosion

Wang, Zhiliang; Yong-chi, LI; Shen, Rui

doi:10.1016/j.ijrmms.2006.11.004

Cited by 116 publications

(32 citation statements)

References 12 publications

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“…The isotropic /kinematic with von Mises criterion is used to approximately model the plastic deformation of rock [7,15].…”

Section: Article In Pressmentioning

confidence: 99%

“…In the present work, following erosion criteria on tensile damage was incorporated into the user-defined subroutine [7] D t Xf t , (25) where f t is the critical value for tensile damage. Coupling Eq.…”

Section: Article In Pressmentioning

confidence: 99%

“…This tensile wave could cause tensile cracking if its material strength is reached. Because of low resistance of rock to tension, tensile spalling may be produced [3,7,8]. It is well recognized that spalling damage of the rock wall or plate on the inner side poses certain threat to the personnel and Fig.…”

Section: Introductionmentioning

confidence: 99%

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Numerical analysis of blast-induced wave propagation and spalling damage in a rock plate

Wang

Yong-chi

Wang

2008

International Journal of Rock Mechanics and Mining Sciences

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“…The isotropic /kinematic with von Mises criterion is used to approximately model the plastic deformation of rock [7,15].…”

Section: Article In Pressmentioning

confidence: 99%

Section: Article In Pressmentioning

confidence: 99%

See 1 more Smart Citation

Numerical analysis of blast-induced wave propagation and spalling damage in a rock plate

Wang

Yong-chi

Wang

2008

International Journal of Rock Mechanics and Mining Sciences

Self Cite

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“…Generally, peak particle velocity (PPV) is considered to be a reliable vibration monitoring parameter for the assessment of attenuation characteristics of blast wave and structural damage (Wu et al 1998;Hakan et al 2009). Dynamic responses of continuous rock masses under blast loading have been studied by Wang et al (2007 to investigate blast induced wave propagation and tensile damage to rock masses (Zhi-liang et al 2008). Numerical modelling of blast wave propagation through rock mass and effects of water and joints were also studied by Chang-jing et al (2007).…”

Section: Introductionmentioning

confidence: 99%

Stability Assessment of a Pit Slope Under Blast Loading: A Case Study of Pasir Coal Mine

et al. 2010

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In Pasir mine, coal seams and host rocks of varying thickness have been uniquely deposited with an average dip angle of 85°. The host rocks are weak and mainly composed of mudstone and sandstone comprising of 90-95% of the total pit volume. The thickness of coal seams and host rocks ranges from sub-metric to few tenths of meter. The overall safe pit slope angle was evaluated to be 27°for mining depth of 50-150 m. Several slopes failure incidents have occurred in the mine causing considerable disruption in production and monetary loss. It is envisaged that slope failures may be triggered due to blasting conducted in steeply dipping stratified deposit. In order to investigate the causes of slope failures, peak particle velocity (PPV) and accelerations at various locations from the blast site have been measured. In addition, finite element models of pit slope have been analyzed by applying static or gravity loading as well as blasting or dynamic loading. This paper elaborates the results of in situ measurements of ground vibration and numerical investigation and suggests possible causes of slope failures in Pasir mine.

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“…Continuous numerical methods, such as the finite element method (FEM), which employs damage constitutive models and erosion algorithms, are usually used to simulate the damage and fracture of the rock mass near the chamber, so as to study the expansion of chambers and the fragmentation mechanisms of the rock mass under blasting loading [1,2]. For the simulation of rock mass failure, rock block cast, and the formation of blasting piles, the discontinuous numerical methods however have obvious advantages and are more applicable.…”

Section: Introductionmentioning

confidence: 99%

Simulation of blast induced crater in jointed rock mass by discontinuous deformation analysis method

Ning

Yang

et al. 2010

Front. Archit. Civ. Eng. China

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Rock blasting is a dynamic process accompanied with the propagations of shock waves and the dispersion of the explosion gas. This paper adopts the discontinuous deformation analysis (DDA) method to simulate the rock blasting process. A dynamic parameter adjustment and the non-reflecting boundary condition are implemented in the DDA method. The sub-block DDA method to simulate fracture problems is used. The blasting process in jointed rock mass is simulated by application of the explosion gas pressure on the expanding borehole walls and induced connected fracture surfaces around the boreholes. The blast craters with different overburdens are derived. The whole process including the explosion gas dispersion, borehole expansion, rock mass failure and cast, and the formation of the final blasting piles in rock blasting are well reproduced numerically. Parametric study for different overburdens is carried out, and the results are analyzed and discussed.

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Numerical simulation of tensile damage and blast crater in brittle rock due to underground explosion

Cited by 116 publications

References 12 publications

Numerical analysis of blast-induced wave propagation and spalling damage in a rock plate

Numerical analysis of blast-induced wave propagation and spalling damage in a rock plate

Stability Assessment of a Pit Slope Under Blast Loading: A Case Study of Pasir Coal Mine

Simulation of blast induced crater in jointed rock mass by discontinuous deformation analysis method

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