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模拟深部开采底板岩层的裂隙演化特征是深入探讨煤层开采底板突水规律和演化机制研究的关键,为开展深部开采高水压底板突水通道形成的模型试验,基于固流耦合相似理论,以固体材料研究为基础,研制了新型的适用于深井条件下的相似材料,提出适应该材料渗透系数的测量方法,得到不同配比对材料力学性质的影响规律,将该材料应用于底板突水模拟试验,揭示相似材料的破坏特征和深部底板突水通道的演化特征,即受采动影响开切眼处裂隙发育迅速而且程度较高,解释了此处突水概率大易发生突水危险,对解决实际工程问题具有一定的指导意义。
To simulate the evolution characteristics of fissures in deep mining floor rock strata is the key to deeply discuss the research of water inrush law and evolution mechanism of coal seam floor. In order to carry out the model test of formation of water inrush channel in deep mining floor, based on the solid-fluid coupling similarity theory, Based on the material research, a new type of similar material suitable for deep well conditions was developed. The measurement method of adapting to the permeability coefficient of the material was put forward. The influence of different proportion on the mechanical properties of the material was obtained. , Revealing the destruction characteristics of similar materials and the evolution characteristics of water inrush channel in deep floor, that is, the fracture developed rapidly and to a high degree under the influence of mining, explained the danger of water inrush, The actual engineering problems have some guiding significance.