Justification of vertical split casing pump delivery at withdrawal for basic repair

Practice shows that water pumped out from catch galleries of Udachny kimberlite mine has extremely high content of impurities. It is found that with increasing concentration of solid particles in the mine water in the course of reaching design value of kimberlite ore output, the average delivery of vertical split casing pumps of the main water-drainage installation decreases by the time of withdrawal of a pump for basic repair. There is no document information of the recommended value of the pump delivery at withdrawal for basic repair when the pump operates under conditions of intense hydro-abrasive wear. As a case-study of the main waterdrainage installation in Udachny kimberlite mine, the procedure is developed for the economic justification of the vertical split casing pump delivery at withdrawal for basic repair. It is proved that in the nearest few years, the vertical split casing pumps of the main water-drainage installation in the mine are expedient to be withdrawn for basic repair when their rated delivery lowers to 220 m3/h. The anticipated economic effect in this case is around RUB 4,5 million/year.

Ovchinnikov N. P. Nazvanie. MIAB. Mining Inf. Anal. Bull. 2022;(7):79-90. [In Russ]. DOI: 10.25018/0236_1493_2022_7_0_79.

N.P. Ovchinnikov, Cand. Sci. (Eng.), Assistant Professor, Director, M.K. Ammosov North-Eastern Federal University, Yakutsk, 677000, Russia, e-mail: ovchinnlar1986@mail.ru, ORCID ID: 0000-0002-4355-5028.

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