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Abstract <p>Increasing the height of an undercut relative to haulage drifts is one of the effective measures aimed to enhance operating safety of the latter. The FEM-based stress–strain change modeling is performed in rock mass during ore block mining in complex geological conditions at different vertical distances between development drifts and stopes. The research reveals an inversely proportional dependence between the undercutting level height relative the haulage level and the total length of operating excavations in the influence zone of stoping. The determined dependence makes it possible to select an optimal height of the undercut level for the benefit of stress control in rock mass and towards minimization of the adverse influence of stresses on mine infrastructure.</p>

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Influence of Thickness of Pillar between Haulage and Undercutting Levels on Stability of Development Drifts

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • T. F. Kharisov,
  • O. D. Kharisova

摘要

Abstract

Increasing the height of an undercut relative to haulage drifts is one of the effective measures aimed to enhance operating safety of the latter. The FEM-based stress–strain change modeling is performed in rock mass during ore block mining in complex geological conditions at different vertical distances between development drifts and stopes. The research reveals an inversely proportional dependence between the undercutting level height relative the haulage level and the total length of operating excavations in the influence zone of stoping. The determined dependence makes it possible to select an optimal height of the undercut level for the benefit of stress control in rock mass and towards minimization of the adverse influence of stresses on mine infrastructure.