根据在各种各样的优秀混合的类似的材料的物理、机械的性质的测试结果,有 rockburst 的明显的趋势的材料的一种类型被选择生产一个大尺寸的模型在隧道模仿 rockburst 现象。原型模型在中国在 Jinping 水力发出的电力车站来自转向隧道的典型的节。挖掘隧道的模拟被在装载以后在模型打开一个洞执行。当模特儿的结果在模型边界在正常压力的条件下面显示了那拱门顶,生产的隧道的拱肩和方面墙一明显跳应力和紧张和包围岩石的声学的排放计数的反应也在隧道挖掘以后在一个不同时间时期很快增加了,显示出 rockburst 的清楚的特征。spalling,弄弯并且碎处于条件在模型的包围岩石中发生了在装载上。在 Jinping 水力发出的电力车站的当模特儿的隧道片断被期望与 spalling 的模式形成张力的 rockburst,这被结束,弄弯并且碎。
According to the test results of the physical and mechanical properties of similar materials in various quality mixture, a type of material with obvious tendency of rockburst was selected to produce a large-size model to simulate rockburst phenomena in tunnels. The prototype model comes from a typical section of diversion tunnels in Jinping Hydropower Station in China. The simulation of excavating tunnels is carried out by opening a hole in the model after loading. The modeling results indicated that under the condition of normal stresses in the model boundaries the arch top, spandrel and side walls of the tunnel produced an obvious jump reaction of stress and strain and the acoustic emission counts of the surrounding rock also increased rapidly in a different time period after the "tunnel" excavation, showing the clear features of rockburst. The spalling, buckling and breaking occurred in the surrounding rock of model in conditions of over loading. It is concluded that the modeling tunnel segment in Jinping Hydropower Station is expected to form the tensile rockburst with the pattern of spalling, buckling and breaking.