This paper analyzed and calculated width of coal pillar for driving roadway along gob.

对沿空掘巷时煤柱的留设问题进行了分析和计算。

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As the size of coal pillar increases, the width of neutral plane area increases. However, the speeding-up of neutral plane area occupying the width of coal pillar decreases and becomes stable.

随煤柱尺寸增加，中性面区域的宽度逐渐增大，但其占煤柱宽度比例增速降低并逐渐趋于稳定。

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The study indicates that with the increase of the coal pillar width the peak mining stress delays its appearance and the increase of the displacement and stress are not synchronous.

研究表明，综放沿空留巷受采场矿压影响时间和程度随留巷煤柱宽度的增加表现出明显滞后现象以及位移和压力增长的不同步现象。

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