Methodology for determining the technical and economic indicator – the intensity process of scooping blasted rocks from the hillside waste

In the paper, based on the proposed physical model of the working equipment of quarry excavators and experimental work carried out in production conditions, a method is proposed for determining the technical and economic indicator — the intensity of the process of scooping blasted rocks from the hillside waste, the collapsed part of the face after drilling and blasting. The factors influencing the intensity of the scooping process are determined: the design parameters of the excavator (the geometric capacity of the bucket and the component of the weight of the working equipment), the parameters of the electromechanical system of the lifting mechanism of the working equipment (the average values of the forces and speeds developed by the lifting drive, the shape coefficient of the mechanical characteristics of the lifting drive and the acceleration time of the lifting drive to idle speed), the control action, determined by the ratio of excess forces developed by the lifting and pressure drives of the working equipment mechanisms, physical and mechanical properties of the rock mass in the face (volume weight, loosening coefficient and relative diameter of the weighted average piece of rock), the efficiency of using the geometric capacity of the excavator bucket (the ratio of the bucket filling coefficient to the rock loosening coefficient in the bucket). The conducted studies substantiate the proposed assessment of the quality of the process of scooping blasted rocks from the scree and the factors affecting the intensity of the filling of the scooping process.

Antropov L. A., Devyatkin Yu. A., Petrovykh L. V. Methodology for determining the technical and economic indicator — the intensity process of scooping blasted rocks from the hillside waste. MIAB. Mining Inf. Anal. Bull. 2022;(11-2):39-51. [In Russ]. DOI: 10.25018/0236_1493_2022_112_0_39.

L.A. Antropov¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: antropov.l@yandex.ru, ORCID ID: 0000-0002-4436-4573,
Yu.A. Devyatkin, Assistant Professor, Engineer, AO «Uralmashzavod», 620012, Ekaterinburg, Russia,
L.V. Petrovykh¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: lyubov.petrovyh@m.ursmu.ru, ORCID ID: 0000-0002-4074-2063,
¹ Ural State Mining University, 620144, Ekaterinburg, Russia.

L.A. Antropov, e-mail: antropov.l@yandex.ru.

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