Authors: I.A. Mironenko, S.I. Protasov

Title of the article: Technology of soils washed in the hydro dump development using jetting erosion and hydraulic dredge

Year: 2019, Issue: 1, Pages: 24-34

Branch of knowledge: MINING AND GEOTECHNICAL ENGINEERING

Index UDK: 622.271.3

DOI: 10.26730/2618-7434-2019-1-24-34

Abstract: Final extraction of coal reserves in some coal mines in Kuzbass requires re-laying of rocks previously dumped in the hydraulic mine dump, 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 re-laying 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 are ensured not only through the use of a set of hydro-mechanized technologies, each of which uses technical means that correspond to the physical and mechanical proper-ties of rocks of the developed hydraulic dump zones but also the sequence of their application and combination. Improving the efficiency and safety of mining is implemented by sequential connection in one process chain of jetting erosion processes and the process of developing rocks with a dredging projectile. 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 pulp, which increases the total slurry concentration transported to the new sludge pond, corre-spond to the capacities of the ground pump installed on dredger. Its mathe-matical 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 hy-dro dumps rocks unified tech-nology of jetting erosion and de-velopment of rocks by suction

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