Processing and calibration methodology of telemetry data for the process of roller-bit drilling of blast wells

Drilling telemetry systems are an effective tool in the mining industry for operational characterization of the massif and optimization of drilling and blasting operations, providing more detailed and cost-effective geological information compared to traditional methods. Despite successful implementations, there are unresolved issues in data interpretation related to the variability of geology and differences in equipment (types of systems, drilling rigs), which complicates the universal application of methods. Data interpretation methods often require individual calibration for a specific deposit/site taking into account the geological structure and the measurement systems used, which is confirmed by the example of Kuzbass open-pit mines. The article proposes an approach to further clarifying geological information by comparing drilling data (especially the estimated drilling energy intensity) for contour or other available blastholes with the actual geological structure observed on the bench slope after the blast. For detailed mapping of the slope geology and precise binding of geological boundaries to borehole depths, video recording and photogrammetry using UAVs are effectively used, followed by comparison with telemetry data. The use of different models of drilling rigs leads to a discrepancy between the measured parameters and the estimated drilling specific energy intensity in the same geological conditions due to design features. It is necessary to calibrate data from different rigs relative to the reference one. Two approaches are proposed: equalization of the final specific energy intensity or search for correction factors for individual telemetry parameters in areas with homogeneous geology. The use of calibration coefficients allows data from different rigs to be converted to a single reference system, ensuring comparability of specific energy intensity indicators and the reliability of subsequent geological interpretation and construction of block models.

Isheyskiy V. A., Marinin M. A., Peters K. I. Processing and calibration methodology of telemetry data for the process of roller-bit drilling of blast wells. MIAB. Mining Inf. Anal. Bull. 2025;(11-1):5—22. [In Russ]. DOI: 10.25018/0236_1493_2025_111_0_5.

Isheyskiy V. A.¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: Isheyskiy_VA@pers.spmi. ru, ORCID ID: 0000-0003-1007-6562,
Marinin M. A.¹, Cand. Sci. (Eng.), Assistant Professor, Head of the Blasting department, e-mail: marinin_ma@pers.spmi.ru, ORCID ID: 0000-0002-5575-9343;
Peters K. I.², Deputy Director for Prospective Development of Drilling and Blasting Technologies, e-mail: k.peters@vgroup.one;
¹ Empress Catherine II Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia;
² LLC «VZRYV GRUPP» 650000, Kemerovo, Russia.

Isheyskiy VA., Isheyskiy_VA@pers.spmi.ru.

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