中文摘要：

以布伦口-公格尔水电站引水隧洞工程作为研究对象，研究层状岩体条件下当节理面与隧洞洞轴线近乎一致时的围岩稳定性，通过对层状岩质隧洞建立的物理模型，将其转化为等厚度岩质矩形板在纵向荷载作用下静动力学分析的问题，得到在静力作用下的临界荷载公式和在周期性动力作用下的动力不稳定区域，二者相结合，研究岩质矩形板是否发生失稳，为以后将大倾角岩层转化为矩形板分析提供了理论依据，最后利用工程算例进行分析说明。

英文摘要：

Here, taking the diversion tunnel engineering of Bulongkou-Gonggeer Hydropower Station as a research object, the surrounding rock stability under stratified rock mass as the joint surface is almost consistant with the axis of the tunnel hole is analyzed in detail. Through the physical model for stratified rock tunnel, it is transformed to be the static and dy- namic analysis for the rectangular rock plate with constant thickness under longitudinal loading, so as to obtain the critical load formula under static action and the dynamic unstability region under cyclical power. Combined with the two theories, it is studied whether the unstability of the rectangular rock plate occurs. All these as mentioned above could provide the theoretical basis for transforming the analysis of big dip strata into the analysis of rectangular rock plate in the future. At last, the analysis and illustration are made by using the calculation examples of engineering.