Authors: P.O. Nickolay

Title of the article: Analysis of the reliability level of sectional pumps of the main drainage system of the Udachny underground mine

Year: 2022, Issue: 5, Pages: 23-28

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 621.671.22

DOI: 10.26730/1816-4528-2022-5-23-28

Abstract: Drainage is one of the most responsible technological processes in the extraction of minerals by underground method. In underground mines of the Russian Federation, the most common type of centrifugal pumps in the main and district drainage systems is a single-flow sectional pump. Currently, many pumping equipment-manufacturing plants are actively promoting two-flow sectional pumps to domestic mining enterprises. The purpose of this article is to conduct a comparative analysis of the reliability level of single- and double-flow sectional pumps, using the example of the main drainage installation of the underground kimberlite mine "Udachny". It is established that the main structural elements of a single–flow sectional pump determining its level of reliability are slot seals of impellers and a hydraulic balancing unit, and in the case of a two-flow one - rotor bushings. The close connection between the bearings is proved. It is established that the values of the availability coefficient of single- and double-flow sectional pumps differ little from each other when working on contaminated and chemically active mine water.

Key words: single-flow pump double-flow pump mine hydraulic balancing unit bearing availability factor

Receiving date: 04.05.2022

Approval date: 01.10.2022

Publication date: 14.10.2022

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