敦煌石窟群围岩波动力学参数特征研究
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摘要
在敦煌石窟群及其附加建筑物稳定性评价中,由于受文物保护的限制,仅能采用地震法弹性波测试。本文对其围岩波速、波主振频率、衰减系数,共振频率、围岩低通滤波特性及波传播的各向异性特征进行了较深入研究。结合现场调查与动力法测试参数的对照,给出了石窟围岩稳定状态的动参数值。
Abstract To evaiuate the rock stability of the Dunhuang Cave ,Gansu Province,some me-chanical parameters are needed . For protecting this worid cuiture heritage, only surfacial seismic elastic wave test can be used. The wave valocity,principal frequency, attenuation coefficient ,the resonant frequency, the characteristic of low-pass wave filtration, and anisotropy of wave propaganda of the enclosing rocks of Dunhuang Cave are analysed in this Paper. Based on the in-sita investigation and the tested dynamic paramcters, the dynamic mechanical parameters of enclosing rocks in stable state are given. Key wores Wave velocity Frequency Attenuation coefficienct Wave filtration Stabili-ty of enclosing rock
引文
[1]姚增、冯珂,顺层滑坡滑带波动力学参数特征研究,兰州大学学报,25卷,4期,1989年。[2]赵平劳、姚增,层状岩石动静态力学参数相关性的各向异性,兰州大学学报,29卷,4期,1993年。[3]陶振宇,岩石力学的理论与实践,水利出版社,1981,66-70,131-132。

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