奥灰高承压水对煤层底板的破坏研究

Research on Failure of Coal Floor due to Confiened Water of Ordovician Limestone

为了分析水压对承压水上煤层底板的破坏规律,引入横截面法和承压水导升理论研究承压水作用机理,推求水压力对煤层底板的作用过程和突水原理。采用总结前人成果和理性推理的方法进行研究,建立理想横截面研究煤层底板破坏的模型,引出二维孔隙率与三维孔隙率的关系,推求孔隙水压作用方式和计算方法,得到煤层底板裂隙扩展的方向性和突水滞后性,预测完整隔水煤层底板突水破坏过程。

In order to analyze the pressure of pressurized water seam floor failure regularity, the introduction of a cross-section method and water-conductive liter theory artesian mechanism, inquire seam floor water pressure and water inrush process works. Using summary of previous results and rational reasoning methods to study the establishment of a cross-sectional study of the ideal model of coal seam floor damage, leads to the relationship between the two-dimensional and three-dimensional porosity, and then get the coal floor crack propagation direction and water inrush lag,forecast impermeable water bursting complete destruction process.