Authors: E.A. Balovnev

Title of the article: System-functional modeling of continuous monitoring of rock mass parameters in the technological process longwall top coal caving

Year: 2024, Issue: 5, Pages: 70-77

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 622 + 004.02 : [62-50 : 550.835.41]

DOI: 10.26730/1816-4528-2024-5-70-77

Abstract: The technology of longwall top coal provides an area or wave release from several roof support sections, therefore the technology is the most promising in terms of release completeness. These complexes can significantly reduce the mining time of thick seams and, as a result, reduce the possibility of spontaneous combustion. The work is devoted to carrying out a systematic analysis of a part of the technological release process associated with the passage of rock mass through the section outlet window and its loading onto the conveyor. The objects of the study were the technological process of longwall top coal caving with release on armored face conveyor, as well as the process of determining the qualitative composition of the rock mass. The paper presents the results of the application of the functional graphical modeling methodology for each object of this study. The author uses the method of system-functional modeling, since it allows structuring, systematizing and defining requirements and functions in the analysis, including technological processes. The analysis is conditioned by the need for automated control of the rock mass, which provides the ability to control the technological process and the quality of solid minerals to reduce the degree of dilution of the released mass onto the conveyor. Mechanisms have been identified in the notation of system-functional modeling, which is possible to create various scenarios for the passage of rock mass near the outlet window to determine the dependencies of the influence of support section structural elements and the velocity of the flow of rock mass on the gamma method sensitivity. In addition, the role of an automated system for determining the coal-rock boundary in the technological process of mining, its relationship and impact on other production processes are determined.

Key words: rock mass roof support section controlled release coal release to the downhole conveyor mechanised roof support technological process released rock mass parameters gamma method modelling IDEF0

Receiving date: 31.10.2024

Approval date: 15.11.2024

Publication date: 11.12.2024

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