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Nickolay I. Kosukhin
Nickolay I. Kosukhin
Technical Consultant for Russia and the CIS, Ph.D.
Blast Movement Technologies PTY Ltd Company AB Hexagon
Technical Consultant for Russia and the CIS, Ph.D.
Blast Movement Technologies PTY Ltd Company AB Hexagon
Samner
Australia

Articles

Mining
  • Date submitted
    2020-05-24
  • Date accepted
    2020-07-23
  • Date published
    2020-11-24

Estimation of ore contour movements after the blast using the BMM system

Article preview

Measurement of ore movements by blast is one of the key components of the quality control system at any mining enterprise, which allows to obtain the accuracy necessary for determining the location of ore contours. About 15 years ago, a monitoring system was developed in Australia that allows mine personnel to make three-dimensional measurements of ore blocks movement at each blast. Studies have shown that ore blocks movement is extremely variable, and it characterized by a complete absence of a deterministic component. The consequence is that modeling ore contour movements during the blast will be inaccurate, and the best results for the mining enterprise can only be achieved by directly measuring the movement. The technology of measuring ore contours movements considered in the article is based on three-dimensional movement vectors obtained in different parts of the blasted block, characterized by different movements. It is obvious that the accuracy of determining the ore contours position after the blast is proportional to the number of measurements made on the block. Currently, the movement control technology based on the BMM system is actively used by global mining companies, its use reduces losses and dilution of ore. In 2017, the pilot implementation of the BMM system was started at the Olympiadinsky GOK, and the system is being implemented in several Russian mining companies.

How to cite: Rakhmanov R.A., Loeb J., Kosukhin N.I. Estimation of ore contour movements after the blast using the BMM system // Journal of Mining Institute. 2020. Vol. 245. p. 547-553. DOI: 10.31897/PMI.2020.5.6
Topical issues in mining of ore and nonmetallic minerals
  • Date submitted
    2013-01-22
  • Date accepted
    2013-03-24
  • Date published
    2013-07-01

Rock displacements in the vicinity of the face of the unsupported excavation

Article preview

The relationship between displacements of the excavation contour and distance to the excavation face is obtained in the paper. The relationship allows to calculate support pressure with the account for delay of the support installation. Some calculation results of axial forces in the support are given. Calculations are made on the basis of finite-element method with three dimensional models.

How to cite: Kovalevskii E.R., Mozer S.P., Karasev M.A., Kosukhin N.I. Rock displacements in the vicinity of the face of the unsupported excavation // Journal of Mining Institute. 2013. Vol. 206. p. 74.