Authors: RemezovA.V., TorroV.O., KuznetsovY.V.

Title of the article: Study of load distribution at the border of the protective pillar in the zone of dismantling chamber formation by a production face

Year: 2018, Issue: 4, Pages: 65-74

Branch of knowledge: Earth sciences

Index UDK: 622.831.1

DOI: 10.26730/1999-4125-2018-4-65-74

Abstract: When mining powerful flat coal seams by long walls, the issue of locating a dismantling chamber becomes problematic. This is especially important due to the need to maintain the dismantling chamber in accordance with the requirements of safety regulations, including when it is formed by a production face, to ensure safe and effective performance of equipment dismantling. The choice of the chamber location is determined by a number of factors, in particular, by the load distribution at the border of the safety pillar in the zone of the dismantling chamber formation by a production face. The purpose of this work is to study this issue. The essence of the study method is that using full-scale studies, instrumental measurements and the theory of wave-like propagation of the abutment pressure ahead of the production face, the empirical curves of the loading area from the hanging consoles make it possible to determine the actual increment of the main roof caving and the total abutment pressure in the system: "gob - dismantling chamber - safety pillar". Based on the results of the study, the parameters of the abutment pressure, the standard sizes of safety pil-lars, and the dimensions of the dismantling chamber, the algorithm was developed for selection of the optimal location for the dismantling chamber when it was formed by a production face. Application of the developed form for the calculation of optimum increase in the width of the pillar to im-prove its strength presents the basis for successful implementation of the techniques for formation of the dismantling chamber using the production face.

Key words: rock pressure protective pillar pillar dimensions dismantling chamber seam roof roof caving increment depth of the mine working location production face

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