Mechanism of energy limit equilibrium of rock burst in coal mine

With the increase of mining depth,the effect of rock burst on coal mining is becoming more and more obvious and the rock burst mechanism becomes more and more complicated.Scholars from many countries had put forward different mechanisms,but no one gave a reasonable explanation to the mechanism of rock burst.In this paper,based on the energy theories,we studied the energy limit equilibrium（ELE） of coal mine rock burst The coal seam with rock burst is divided into energy limit equilibrium zone（ELEZ）（A） and elastic zone（B）;we also determined the position where the rock burst occurs,including the roof and floor of coal seams;in addition,we derived the limit width of ELEZ and the mathematic relationship between the limit width and occurrence mechanism of rock burst：the energy difference function（EDF）,w（x） = w_j - w_p,because first-order derivative w＇（x）,is less than 0.So EDF is a monotonically decreasing function.The graph of the energy difference function was also determined, through which we analysed the occurrence mechanism of rock burst.

随采矿深度的增加，在煤采矿上冲破的岩石的效果正在变得越来越明显，岩石爆炸机制变得越来越复杂。来自许多国家的学者提出了不同机制，但是没有人把合理解释给了冲破的岩石的机制。在这份报纸，基于精力理论，我们学习了矿岩石冲破了的煤的精力限制平衡(ELE ) 。有冲破的岩石的煤缝接被划分成精力限制平衡地区(ELEZ )(A) 和有弹性的地区(B) ；我们也决定了岩石爆炸发生的位置，包括煤缝接的房顶和地板；另外，我们导出在限制宽度和冲破的岩石的出现机制之间的 ELEZ 和数学关系的限制宽度：精力差别功能(EDF ) ， w (x)= wj wp 一阶的衍生物 w (x) ，是不到 0。EDF 因此是 monotonically 减少的功能。精力差别功能的图也被决定，通过哪个我们分析了岩石的出现机制爆炸。