Application of a Numerical Model for Forecasting the  Consequences of an Explosion

N.B. Bakhtybayev; K.T. Atageldiyev; O.A. Abil; A.S. Bakhtybayeva; S.Ye. Suiintayeva

doi:10.31643/2027/6445.45

Authors

N.B. Bakhtybayev Mining Research Group LLP
K.T. Atageldiyev Mining Research Group LLP
O.A. Abil Mining Research Group LLP
A.S. Bakhtybayeva Abylkas Saginov Karaganda Technical University
S.Ye. Suiintayeva Abylkas Saginov Karaganda Technical University

DOI:

https://doi.org/10.31643/2027/6445.45

Keywords:

blasting operations; numerical modeling; Ansys LS-DYNA; single blast hole; group of boreholes; air-blast wave; overpressure; equivalent stresses; blast dynamics; explosion consequences prediction.

Abstract

The study presents an investigation of the consequences of explosive impacts during blasting operations at the Zhairem deposit using numerical modeling in the Ansys LS-DYNA software package. Based on literature data and the physico-mechanical properties of rock materials, two modeling scenarios were implemented: the explosion of a single blast hole and a group of blast holes. Dependencies of internal and kinetic energies, displacements, velocities, and accelerations of the rock mass, as well as the distribution of stresses and pressures within the rock, were obtained. It was shown that the maximum equivalent stress during the explosion of a single hole reaches 923.73 MPa, corresponding to the zone of intensive rock mass destruction. For a group of blast holes, energy release increases by several orders of magnitude, reaching 1.2×10⁹ J. Characteristic phases of energy transformation and blast wave dynamics were identified, allowing the assessment of hazardous zones and potential consequences of unauthorized explosions. The results of the study can be used to improve the safety of blasting operations and to predict the impact of air-blast overpressure on buildings and structures.

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Author Biographies

N.B. Bakhtybayev, Mining Research Group LLP

Candidate of Technical Sciences, director of the Mining Research Group LLP, Karaganda, Kazakhstan. ORCID ID: http://orcid.org/0000-0002-9816-9765

K.T. Atageldiyev, Mining Research Group LLP

Research Scientist of the Mining Research Group LLP, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0000-0002-1902-0170

O.A. Abil, Mining Research Group LLP

Associate Director of the Mining Research Group LLP, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0000-0001-9939-9039

A.S. Bakhtybayeva, Abylkas Saginov Karaganda Technical University

PhD, senior lecturer, Abylkas Saginov Karaganda Technical University, N. Nazarbayev Ave., 56, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0000-0001-7163-6274

S.Ye. Suiintayeva, Abylkas Saginov Karaganda Technical University

PhD student, Abylkas Saginov Karaganda Technical University, N. Nazarbayev Ave., 56, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0000-0003-1362-2493

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