煤层底板隐伏断层突水的物理实验研究

Research on water inrush from the blind fault of coal floor by physical experiment

利用相似材料模拟实验研究底板隐伏断层在不同发育高度、组合形式下,受到采动破坏和水压共同作用时裂隙扩展形式以及破坏规律。证明了在承压水的作用下,断层破坏带产生递进导升扩展。实验表明影响断层递进导升破坏的主要因素是断层初始发育高度,而组合方式对其影响较低。同时发育高度越大的断层,其递进导升破坏越强烈,也更加容易沟通煤层底板发生突水。为解决华北型矿井底板突水问题,丰富底板突水机理研究提供了现实意义。

Base plate of similar material simulation experiment study on the fissure development of .the blind fault under the action of the combination of mining damage extension form and law of and water pressure, which in the different development heights and combinations. Proves that the progressive extension of fault is exists, which under the action of confined water. Experiments show that the main factors affecting the progressive fault causing damage up is highly fault initial development, and the combination of the impact is low. At the same time the height of the greater development of the fault, the progressive destruction of the more intense guide liter, and more easily communicate seam floor water bursting occurs. It provides practical significance to solve the problem of north China type mine inrush and rich inrush mechanism research.