Authors: I.A. Mironenko

Title of the article: Influence of Mining and Technical Conditions on Pa-rameters of Hydrodump Rock Respoiling Technology for Joint Mining by Jetting Erosion and Hydraulic Dredge

Year: 2020, Issue: 4, Pages: 70-79

Branch of knowledge: 25.00.22 Geotechnology (underground, open and construction)

Index UDK: 622.271.64

DOI: 10.26730/2618-7434-2020-4-70-79

Abstract: Refinement of coal reserves in some coal mines in Kuzbass requires re-laying of rocks previously washed in the hydro dumps, which are located above coal reserves.
Based on the analysis of changes in the physical and mechanical properties of alluvial rock, a complex technology of respoiling hydraulic waste dumps is proposed, which allowed us to substantiate a new way of developing and moving them.
The essence of this method of re-laying rocks of hydraulic dumps lies in the fact that the safety and efficiency of mining operations is ensured not only through the use of a complex of hydro-mechanized technologies, each of which uses technical means that correspond to the physical and mechanical properties of rocks of the developed hydraulic dump zones but also the sequence of their application and combination.
The condition for the stable operation of the hydro complex is determined when the hydraulic mixture coming from the hydraulic monitor and the rock additionally developed by the dredger in the form of a slurry, which increases the total slurry concentration transported to the new hydraulic pit shaft, correspond to the capabilities of the ground pump installed on dredger. Its mathematical record is given in the form of a system of equations, the solution of which allows one to establish the parameters of the main processes.

Key words: development of hydro dump rocks joint mining by jetting erosion and hydraulic dredge the condition of stable operation of the hydraulic complex dependence of technology parameters on mining and technical conditions

Receiving date: 02.12.2020

Publication date: 29.12.2020

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