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针对具体地质条件,以现场试验数据为基础,采用相似材料试验及数值模拟相结合的分析方法,对含断层缺陷煤层回采过程中底板损伤破坏及断层活化规律进行研究,研究得出:采用内径不同的水管能够很好地反映底板岩层渗透性的空间差异性,通过采用调节注水管水柱高度的方式可以控制水压以满足设计要求;煤层埋深、承压水水压及断层落差越大越易突水,断层防水煤柱宽度越大越不易突水;通过试验及模拟计算再现了不同因素影响下煤层回采过程中底板采动裂隙形成、断层活化到突水通道形成的全过程,揭示了含断层构造底板突水通道的形成机制;研究结果对承压水上含断层缺陷煤层回采时防水煤柱的留设具有重要的参考价值。
According to the specific geological conditions, based on the field test data, the method of combining similar materials test and numerical simulation is used to study the damage and failure of the floor during the recovery process of coal seam with fault faults. The study shows that: The water pipe can well reflect the spatial difference of floor rock permeability. The water pressure can be controlled by adjusting the water column height to meet the design requirements. The more the coal seam depth, the pressure water pressure and the fault drop, Water and fault water-proof pillars are more difficult to water inrush when the width is bigger. Through the experiment and simulation calculation, the whole process of floor mining fissure formation and fault activation to water inrush channel are reproduced under the influence of different factors. The formation mechanism of floor water bursting channel. The research results have important reference value for the retention of water-proof coal pillars in the coal seam with fault-bearing fault on the confined water.