【摘要】 岩体结构面是影响应力波衰减的最主要因素,但不同尺度结构面对应力波衰减的影响特性不同,因而应根据结构面尺度特性采用不同方法研究。岩体中小尺度结构面数量众多,单一结构面对应力波衰减无明显影响,采用等效介质法研究是有效的。中、大尺度的结构面数量较少,单一结构面使应力波衰减发生较明显变化,应在建立单一结构面的传播和衰减特性模型的基础上,分析应力波的特征频率变化和频谱偏移规律与岩体结构的关系,采用应力波时空衰减相结合的方法研究多结构面耦合作用对应力波衰减的影响规律。更多还原

【Abstract】 Interface of rock mass is one of the most influential factors to stress wave attenuation.However,different dimension interfaces have different effect on stress wave attenuation.Therefore,study method should be adopted according to the real interfaces dimension.There are numerous medium and small scale interfaces contained in rock mass.A single interface has not obvious influence to stress wave attenuation.The effective-medium theory is apt to analyze the stress wave attenuation in rock mass containing many small scale interfaces.The single interface of rock mass containing mesoscale and large scale interfaces has obvious effect on stress wave attenuation.The relationship between characteristic of stress wave frequency variation and spectrum migration rule and rock mass structure are analyzed.The paper studies the influence rule of coupling of multiple interfaces to stress wave attenuation by the method of combining time attenuation and space attenuation.更多还原