中文摘要：

基于阳湾沟煤矿地质资料，应用极限平衡理论计算得到合理的煤柱尺寸为25m；采用FLAC3D数值模拟分析了不同宽度护巷煤柱的垂直应力和弹塑性区分布规律，得到合理的煤柱尺寸为25～30m；最终确定阳湾沟煤矿合理护巷煤柱宽度不小于25m。针对回风顺槽顶板不同的围岩状态，设计了支护方案，通过数值模拟得到不同支护条件下的围岩应力状态和位移分布，结果表明，支护方案是合理的，能够有效的控制围岩的变形与破坏。

英文摘要：

Based on geological data of Yangwangou coal mine, applied limit equilibrium theory , it can conclude that reasonable pillar width is 25m; Adopting the research methods of FLAC3D numerical simulation, the distributional regularities of the vertical stress and elastic-plastic area in different coal pillar width were analyzed, and the result show that reasonable pillar width is 25 - 30m;Eventually,it is certain that the reasonable pillar width is not less than 25m of Yangwangou coal mine. Supporting schemes were designed for different state of surrounding rock in air return way. Stress state and displacement distribution of supporting schemes were analyzed by numerical simulation. The result show that supporting schemes are reasonable and can effective control deformation and failure of surrounding rock.