The study manifested the uncoupled pattern of the peak stresses in vertical and horizontal directions, as well as the stress evolution trace varying with pillar width.

揭示了煤体边缘水平应力和垂直应力峰值不耦合的规律以及巷道顶板应力峰值随煤柱宽度不同而演化的轨迹。

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In this paper, we give a new mathematical representation, which can present the "8" -shape trace visually with graphic representation and give height and width of the "8" -shape trace in a simple way.

本文给出新的数学表达式，能用图示法形象直观地描绘出“8”字形轨迹，并简明地给出“8”字形的高度和宽度。

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The numerical results show that the randomness of the width of fissure has a greater effect on seepage field than that of the trace and the spacing of fissure.

数值分析表明 ：隙宽的随机性对渗流场的影响最大 ，裂隙的迹长次之 ，间距的影响最小。

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