基于突水系数公式由水压和隔水层厚度有关,为了使突水系数法在煤矿底板突水评价中更加准确有效,考虑到各类岩石本身所具有的力学强度和阻水性能,从底板隔水层岩石组合方式及矿压破坏带发育情况入手,将突水系数公式改进为质量比值系数公式和强度比值系数公式。并将改进公式应用于某矿,结果表明:2种改进公式所绘制的评价图不仅能更加精确地显示矿井底板突水危险区域,而且给出了底板突水系数最大值与最小值。

The water inrush coefficient formula was consisted with the water pressure and the water insulation layer thickness M.In order to make the water inrush coefficient method applied to more accurately and efficiently evaluate the mine floor water inrush, in consideration of the mechanics strength and water resistance perfo rmances of each type rock, from the rock combination mode of the floor water insulation layer and the development condition of the mine pressure failure zone, the wat er inrush coefficient formula could be modified to a quality ratio coefficient formula and a strength ratio cofficient formula.The modified formulas were applied to the mi ne.The results showed that the evaluation figures drawn with the two modified formulas would not only accurately display the mine floor water inrush danger area, but C ould provide the maximum value and minimum value of the mine floor water inrush coefficients.

国家重点基础研究发展计划(973计划)资助项目(2007CB209400)；中央高校基本科研业务费专项资金资助项目(2010QNB35)；