Authors: TorroV.O., RemezovA.V.

Title of the article: Study of changes in the geomechanical condition of the rock strata when a production face enters a dismantling chamber in seam "Bajkaimsky" of 7th november mine, JSC "SUEK-Kuzbass"

Year: 2018, Issue: 4, Pages: 75-83

Branch of knowledge: Earth sciences

Index UDK: 622.831.1

DOI: 10.26730/1999-4125-2018-4-75-83

Abstract: A significant problem affecting the reduction of output from production faces equipped with mechanized complexes, is the existing time for re-installation of their equipment. For example, the duration of re-installation of a set of longwall mining equipment at the mines of JSC SUEK-KUZBASS ranges from 50-70 days. Meanwhile, production losses are 800,000 tons or more. One of the ways to solve this problem is preliminary preparation of the dismantling chamber. The studies, the course and the results of which are reflected in this article were aimed at determining the most effective way of preliminary preparation of the dismantling chamber in specific conditions. To this end, work was carried out on the study of the geomechanical state of the rock strata at the entrance of the production faces into the dismantling chamber in seam “Bajkaimsky” of the “7th November” mine, JSC SUEK-KUZBASS. The work included as follows: 1. Values of vertical displacement of roof and floor rock strata soil in the mine workings of the extracted pillar; 2. Intensity of formation of domes. As a result, some conclusions have been made, including: 1. Formation of the dismantling chamber by a production face is the most favourable option of its prepara-tion; 2. For a more exact determination of roof caving increment and loading on powered support canopies, it is necessary to equip all purchased powered systems with the automated monitoring system for control of rock pressure impact on the support components. Results of researches allow us to select a correct method of the dismantling chamber preparation that offers the chance to reduce the time of equipment disassembly, and consequently, promote growth of extraction volumes.

Key words: dismantling chamber equipment dismantle a geomechanical condition of rock strata vertical displacement of rock formation of domes depth of a mine working development a rock pressure abutment pressure a zone of increased rock pressure

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