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Determination of rational technological conditions for the use of pump dredger suction heads

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Category: Content №6 2025

Last Updated on 25 December 2025

Published on 30 November -0001

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Authors:

A. Bondarenko, orcid.org/0000-0002-7666-6752, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A. Pavlychenko, orcid.org/0000-0003-4652-9180, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O. Shustov*, orcid.org/0000-0002-2738-9891, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O. Cherniaiev, orcid.org/0000-0001-8288-4011, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2025, (6): 035 - 042

https://doi.org/10.33271/nvngu/2025-6/035

Abstract:

Purpose. Development of theoretical foundations for determining rational technological conditions for the use of pump dredger suction heads in underwater mining of unconsolidated minerals.

Methodology. In calculating the volume of complex geometric figures formed by the intersection of cones of different heights, whose vertices lie in the same plane, a standard method of integration was applied.

Findings. The feasibility of using funnel technology in underwater soil mining has been substantiated. An analysis of technological schemes for the use of pump dredger suction heads intended for underwater mining of unconsolidated minerals has been performed. As a limiting criterion for selecting the layout scheme of mining funnels, it is proposed to use the dimensionless coefficient of mineral recovery. For comparative analysis, the most suitable schemes for moving pump dredger suction heads with final positions of funnel centers were proposed – referred to as the square-nest and triangular-nest schemes. Graphic representations of the mined space of the underwater quarry using the funnel method with square-nest and triangular-nest layouts are provided. Based on the analysis, it is assumed that during the mining of unconsolidated soil using a single suction pipe, the extraction funnel will take the shape of a cone. It is proposed to determine the volume of soil extracted from such a funnel by calculating the sum of volumes of the following geometric figures: parallelepiped; a complex figure obtained by cutting off the volume of a truncated cone with planes parallel to its axis; and cone.

Originality. For the first time, it is proposed to determine the volume of soil extracted from an underwater dredging site of a suction dredger using the integration method. Theoretical dependencies were obtained to determine the extraction coefficients when applying square-nest and triangular-nest schemes for repositioning the suction head during funnel-type underwater mining operations.

Practical value. The calculated values of extraction coefficients for the square-nest and triangular-nest schemes of repositioning the suction head will enable efficient use of the funnel mining method. The technological feasibility of applying the triangular-nest scheme has been established according to the criterion of the mineral extraction coefficient from the underwater mining site.

Keywords: suction head, underwater mining, extraction coefficient, technological conditions

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