【摘要】 针对中厚煤层沿空掘巷围岩的特殊力学环境,构建大结构力学模型,并分析其稳定性。运用理论分析与公式推导确定沿空掘巷围岩的支护参数及护巷煤柱的合理宽度,并成功进行了工程实践应用。研究结果表明:采动期间,能有效控制巷道两帮的变形量,未出现窄煤柱明显的整体位移现象。更多还原

【Abstract】 According to mechanical environment of rock surrounding gob-side entry driving in medium-thickness seam, setting up big structure and analyzing its stability. By use of the theoretical analysis and formula derivation in determining support parameters for gob-side entry driving and the reasonable coal pillar, at last carried out successfully. The results show that it can control the deformation of roadway two help narrow coal pillar effectively and the overall displacement does not appear the phenomenon of obvious on narrow pillar.更多还原