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。
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。
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。
The paper introduces a method to use the observation technology to ascertain the width of stage coal pillar by an example.
通过一个实例介绍了用实测技术确定区段煤柱宽度的方法。
Through analyze the failure mechanism and structural feature of mine pillar and upside rock, the reasonable virgin coal width formula has been obtained.
通过对顺槽煤柱破坏失稳机理及煤柱上覆岩体的结构特征、垮落失稳机理的分析，提出了合理煤柱宽度的计算公式。
The stability of goaf-side roadways depends on not only the abutment distribution, but also the fracturing degree of the coal seam and rock strata alone the pillar width.
一侧采空巷道稳定性不仅与支承压力分布有关，而且与煤体受破坏程度有关。
The peak value of abutment pressures on coal pillar had a certain distance to the wall, and the distance reduced when the working face width increased.
煤柱支承压力峰值超前煤壁一定距离，且此距离随工作面长度加大而减小。
While the interfacial bond property is unchanged, the width of plastic zone of pillar increases with the increase of buried depth of coal seam.
当煤层顶底板粘结性能一定时，随煤层埋深的增加，煤柱塑性区宽度增加。
The opinion was put forward that the infection of roadway driving and coal mining need considered simultaneously when determination the reasonable width for coal pillar.
提出确定沿空掘巷合理煤柱宽度时，不仅需考虑掘巷扰动影响，还应将本工作面的超前采动影响作为一个重要影响因素。
While the coal seam hardness is definite, the increasing velocity of the width of the plastic zone of pillar decrease with the increase of interfacial bond property between coal seam and roof.
当煤层硬度一定时，随着煤层与顶底板界面粘结性能的提高，煤柱塑性区宽度增长的速度递减；
Lengthening the width of isolated fully mechanized top coal caving face would reduce the abutment pressures for both wide and small coal pillars, and the coal pillar width could be reduced.
加长孤岛综放工作面长度，护巷大煤柱和小煤柱的支承压力均减小，可以减小护巷煤柱宽度。
Lengthening the width of isolated fully mechanized top coal caving face would reduce the abutment pressures for both wide and small coal pillars, and the coal pillar width could be reduced.
加长孤岛综放工作面长度，护巷大煤柱和小煤柱的支承压力均减小，可以减小护巷煤柱宽度。
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