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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 water pressure on the pressure of the water floor of the law of failure, the introduction of cross-section method and the theory of confined water guide to study the mechanism of confined water, and deduce water pressure on the coal floor process and water inrush principle. Based on the conclusion of previous achievements and rational reasoning, a model of coal seam floor failure was established based on the ideal cross-section. The relationship between the two-dimensional porosity and the three-dimensional porosity was deduced and the pore water pressure action method and calculation method were deduced. Extended directionality and water inrush hysteresis to predict the water inrush failure process of the intact water-proof coal seam floor.