In the development of underground spaces, we found that the mechanical properties of rock mass often demonstrate strong nonlinear characteristics. Some new phenomena emerge in deep rock mass engineering. This includes zonal disintegration and rock burst. Zonal disintegration is very important in deep tunnels. In this paper, we start with the mechanical properties of deep rocks to understand the preconditions for zonal disintegration. Using the Failure Approach Index (FAI), the process of zonal disintegration can be modeled by FLAC (FISH language). Our results indicate that tensile failure in the Supporting Pressure Zone (SPZ) is a precondition for zonal disintegration. Various factors that affect the generation of zonal disintegration are studied. When the maximum stress is in the axial direction, zonal disintegration will be present in deep tunnels. The high axial stress is necessary for zonal disintegration. We will present a zonal disintegration simulation in one coal mine for comparison with the borehole teleview data. We suggest some measures to prevent the development of zonal disintegration.

中文翻译：

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深埋隧道地带崩解的产生机理与发展规律研究

在地下空间的发展中，我们发现岩体的力学性能通常表现出很强的非线性特征。在深部岩体工程中出现了一些新现象。这包括地带崩解和岩石破裂。在深层隧道中，带状崩解非常重要。在本文中，我们将从深部岩石的力学特性入手，以了解带状崩解的前提。使用失效途径指数（FAI），可以通过FLAC（FISH语言）对区域崩解过程进行建模。我们的结果表明，在支撑压力区（SPZ）中的拉伸破坏是区域崩塌的前提。研究了影响区域崩解的各种因素。当最大应力在轴向上时 带状崩解将出现在深层隧道中。高轴向应力对于区域崩解是必要的。我们将在一个煤矿中进行地层崩解模拟，以与钻孔远景数据进行比较。我们建议采取一些措施来防止区域崩解的发展。