Whether a tensile failure fracture will penetrate a stratum is difficult to ascertain at present. In view of this, the method of similar simulation and field verification are used to carry out a systematic study. Similar simulations show that tensile failure fractures will penetrate the layered strata if the compressive stress is greater than the compressive strength. Theoretical analysis points out that whether the tensile failure fractures will penetrate the layered strata can be expressed by the value of criterion of interconnected vertical fractures and the compression-tension ratio. When the value of criterion of interconnected vertical fractures is greater than the compression-tension ratio, the layered strata will break. This criterion was qualitatively verified with a field test. The results of this paper are of great significance for the prevention of water inrush in coal mines, and it can also promote the understanding of the law of strata movement.

中文翻译：

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长壁采煤覆盖层互连竖向裂缝演化机制

目前很难确定拉伸破坏断裂是否会穿透地层。鉴于此，采用类似模拟和现场验证的方法进行系统研究。类似的模拟表明，如果压应力大于抗压强度，拉伸破坏裂缝将穿透层状地层。理论分析指出，拉伸破坏裂缝是否会穿透层状地层，可以用相互连接的竖向裂缝判据和压拉比值来表示。当相互连接的垂直裂缝准则值大于压拉比时，层状地层将破裂。该标准通过现场测试进行了定性验证。