Seismic effects induced by large-scale blasts in isotropic and structurally complex pit wall rock masses

Authors: Tyupin V.N.

Experience of blasting in open pit mines shows that seismic radiation has different intensities in different directions relative to a block subjected to blasting. This is connected with many factors, including large-scale blast pattern designs, physical / mechanical properties and jointing of rock mass, as well as faulting. This study sets the relations for seismic vibration velocities in large-scale blasting in open pit mines in isotropic and anisotropic structurally complex rock masses in different directions relative to the sides of a blasting block. The calculation formulas are validated, and the seismic vibration velocities are calculated in different directions relative to a blasting block in isotropic and structurally complex rock masses. The appropriateness of the formulas is proved. The formulas of seismic vibration velocities can be used to perform assessment of influence exerted by large-scale blast pattern design and naturally faulted rock mass parameters on the critical objects, and to develop methods to abate seismic effects of blasting in open pit mines by means of numerical variation of a large-scale blast. A promising ways is to investigate the influence of backfill and mined-out stope on the seismic vibration velocities in blasting in underground mines.

Keywords: large-scale blasts, blast-induced seismic vibrations, calculation formula, jointed rock mass, tectonic faults, numerical calculations, appropriateness.
For citation:

Tyupin V. N. Seismic effects induced by large-scale blasts in isotropic and structurally complex pit wall rock masses. MIAB. Mining Inf. Anal. Bull. 2021;(12):47-57. [In Russ]. DOI: 10.25018/0236_1493_2021_12_0_47.

Acknowledgements:
Issue number: 12
Year: 2021
Page number: 47-57
ISBN: 0236-1493
UDK: 622.2:614.83(075.8)
DOI: 10.25018/0236_1493_2021_12_0_47
Article receipt date: 28.02.2021
Date of review receipt: 24.05.2021
Date of the editorial board′s decision on the article′s publishing: 10.11.2021
About authors:

V.N. Tyupin, Dr. Sci. (Eng.), Professor, Leading Researcher, e-mail: tyupinvn@mail.ru, Belgorod State National Research University, 308015, Belgorod, Russia.

 

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