Investigation of the Stress-strain State During Re-working of a Barrier Pillar with an Asymmetric Location of Field Workings in the Conditions of a Collapse Zone

D. K. Bekbergenov, Abdikarim Zeinullin, Raissa Zhanakova, Madiyar SARYBAYEV

2025

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DOI 10.52209/1609-1825_2025_4_64
Data confidence 70 medium
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Abstract

The features of the nature of the stress-strain state (SSS) during the process of displacement to the left and right of the field drilling and delivery mine (DDM) from the axis of the barrier pillar (BP) in the conditions of collapse at the Zhezkazgan field are investigated. The mining and geological conditions of the deposit are considered, as well as the characteristics of the pillars and remaining reserves during their development by field methods in conditions of massive collapses. Special attention is paid to the analysis of three options for the location of the barrier rear sight. Graphical diagrams of the stress-strain state of the massif at horizontal and inclined ore deposits are constructed. Based on the conducted research, a technological scheme for the re-working of a barrier pillar with an asymmetric arrangement of field workings in the collapse zone is proposed.