Computer-aided creation of coordinate grid for blasted rock block

The notions of ‘coordinate grid of blast block’ and ‘coordinate grid of blasted block’ are defined. The computer-aided determination of the coordinate grid points for a blasted rock block is described. The starting point is using relationships of the initial parameters of a blast rock block such as height and the final pattern of the determined points in the blasted rock block. The governing factors of a blasted block coordinate grid are the broken-rock disintegration height and width dependent on physical and mechanical properties of rocks, physicochemical characteristics of explosives and on blasting pattern design. Considerable influence on arrangement of the blasted block coordinate grid points is exerted by the degree of fragmentation of rocks in horizontal and inclined layers. It is found that the degree of fragmentation tends to increase from the rear to the periphery of the broken rock pile, both horizontally and vertically. Based on the integration of all determinants of a broken rock pile after blasting, the analytical method is newly developed to determine the points and create the coordinate grid of a blasted block. The new computer program for the automatic creation of a blasted block coordinate grid takes into account the influences exerted by physical and mechanical properties of rocks, physicochemical characteristics of explosives and blasting pattern design. The program allows fast and sufficiently accurate position fixing of a blasted block coordinate grid points at different parameters and conditions of blasting. The resultant coordinate grids of blasted blocks are the tool for locating different elements inside broken-rock disintegration.

Keywords: blasted block coordinate grid, grid points, broken-rock disintegration height and width, horizontal and inclined rock layers, degree of disintegration, computer-aided creation of coordinate grid.
For citation:

Rakishev B. R., Rakisheva Z. B., Orynbay А. А. Computer-aided creation of coordinate grid for blasted rock block. MIAB. Mining Inf. Anal. Bull. 2020;(8):40-51. [In Russ]. DOI: 10.25018/0236-1493-2020-8-0-40-51.

Acknowledgements:

The study was supported by the Ministry of Education and Science of the Republic of Kazakhstan in 2018–2020 within the framework of Target Program 2018/ BR05235618: Technological and Production Modernization in the Mining and Processing Industry in the Republic of Kazakhstan.

Issue number: 8
Year: 2020
Page number: 40-51
ISBN: 0236-1493
UDK: 622.235
DOI: 10.25018/0236-1493-2020-8-0-40-51
Article receipt date: 21.02.2020
Date of review receipt: 30.04.2020
Date of the editorial board′s decision on the article′s publishing: 20.07.2020
About authors:

B.R. Rakishev1, Academician of NAS of the Republic of Kazakhstan, Dr. Sci. (Eng.), Professor, e-mail: b.rakishev @mail.ru,
Z.B. Rakisheva, Cand. Sci. (Phys. Mathem.), Professor, Head of Chair, Al-Farabi Kazakh National University, Almaty, Kazakhstan,
Orynbay Asfandiyar Aytkazyuly1, PhD Student, Senior Lecturer,
1 K.I. Satpayev Kazakh National Research Technical University (Satbayev Unuversity), Almaty, Kazakhstan.

 

For contacts:

B.R. Rakishev, e-mail: b.rakishev@mail.ru.

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