Ejection behavior of concrete materials under cast blasting

Jian Guang Xiao; Yuan Feng Zheng; Qing Bo Yu; Hai Fu Wang

doi:10.15918/j.tbit1001-0645.2016.10.006

Ejection behavior of concrete materials under cast blasting

Jian Guang Xiao, Yuan Feng Zheng, Qing Bo Yu, Hai Fu Wang^*

^*Corresponding author for this work

School of Mechatronical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The ejection velocity of fragmented concrete mass formed in the cast blasting was studied with the method of dimensional analysis and numerical simulation. The influence factors of casting velocity was analyzed, and function expression of casting velocity with charge mass and depth of burial as independent variable was derived by dimensional analysis. Average ejection velocity was defined according to the distribution of the fragmented concrete mass. Ejection velocity varies from different charge mass and depth of burial was simulated by SPH using AUTODYN-2 code. With the simulation results, the semi-empirical formula for ejection velocity was fitted. The significance testing for the semi-empirical formula was conducted. And the results show that the confidence level is more than 0.99, and the accuracy of this formula fully meet the engineering requirements.

Original language	English
Pages (from-to)	1015-1018 and 1024
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	36
Issue number	10
DOIs	https://doi.org/10.15918/j.tbit1001-0645.2016.10.006
Publication status	Published - 1 Oct 2016

Keywords

Cast blasting
Dimensional analysis
Ejection velocity
Smoothed particle hydrodynamics (SPH)

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10.15918/j.tbit1001-0645.2016.10.006

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title = "Ejection behavior of concrete materials under cast blasting",

abstract = "The ejection velocity of fragmented concrete mass formed in the cast blasting was studied with the method of dimensional analysis and numerical simulation. The influence factors of casting velocity was analyzed, and function expression of casting velocity with charge mass and depth of burial as independent variable was derived by dimensional analysis. Average ejection velocity was defined according to the distribution of the fragmented concrete mass. Ejection velocity varies from different charge mass and depth of burial was simulated by SPH using AUTODYN-2 code. With the simulation results, the semi-empirical formula for ejection velocity was fitted. The significance testing for the semi-empirical formula was conducted. And the results show that the confidence level is more than 0.99, and the accuracy of this formula fully meet the engineering requirements.",

keywords = "Cast blasting, Dimensional analysis, Ejection velocity, Smoothed particle hydrodynamics (SPH)",

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TY - JOUR

T1 - Ejection behavior of concrete materials under cast blasting

AU - Xiao, Jian Guang

AU - Zheng, Yuan Feng

AU - Yu, Qing Bo

AU - Wang, Hai Fu

PY - 2016/10/1

Y1 - 2016/10/1

N2 - The ejection velocity of fragmented concrete mass formed in the cast blasting was studied with the method of dimensional analysis and numerical simulation. The influence factors of casting velocity was analyzed, and function expression of casting velocity with charge mass and depth of burial as independent variable was derived by dimensional analysis. Average ejection velocity was defined according to the distribution of the fragmented concrete mass. Ejection velocity varies from different charge mass and depth of burial was simulated by SPH using AUTODYN-2 code. With the simulation results, the semi-empirical formula for ejection velocity was fitted. The significance testing for the semi-empirical formula was conducted. And the results show that the confidence level is more than 0.99, and the accuracy of this formula fully meet the engineering requirements.

AB - The ejection velocity of fragmented concrete mass formed in the cast blasting was studied with the method of dimensional analysis and numerical simulation. The influence factors of casting velocity was analyzed, and function expression of casting velocity with charge mass and depth of burial as independent variable was derived by dimensional analysis. Average ejection velocity was defined according to the distribution of the fragmented concrete mass. Ejection velocity varies from different charge mass and depth of burial was simulated by SPH using AUTODYN-2 code. With the simulation results, the semi-empirical formula for ejection velocity was fitted. The significance testing for the semi-empirical formula was conducted. And the results show that the confidence level is more than 0.99, and the accuracy of this formula fully meet the engineering requirements.

KW - Cast blasting

KW - Dimensional analysis

KW - Ejection velocity

KW - Smoothed particle hydrodynamics (SPH)

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Ejection behavior of concrete materials under cast blasting

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Keywords

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