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在深部高地应力硬岩开采过程中,经常可以观测到与开挖面基本平行的板裂破坏,这种破坏形式不同于剪切破坏,目前已引起国内外学者的广泛关注。通过工程现场高地应力硬岩板裂破坏的实例分析,观察到硬岩的板裂、片帮、V形槽、岩芯饼化等张性破坏特征,并对高应力硬岩的理论和试验研究现状进行了论述,给出了目前高应力硬岩板裂破坏的工程判据曲线,最后对硬岩板裂破坏的进一步研究工作进行了展望。
In the process of deep high-stress rock mining, it is often observed that the plate-breakage is basically parallel to the excavation face, which is different from shear failure. At present, it has attracted wide attention from domestic and foreign scholars. Through the example analysis of high-stress hard rock cracking in engineering site, the characteristics of tensile failure, such as plate crack, v-groove, core cake and so on, were observed and the theory and experimental study on high-stress hard rock The current situation is discussed, and the engineering criterion curve of the current high stress and hard rock crack damage is given. Finally, the further research work on the hard rock crack damage is prospected.