摘要
岩石所受的三向应力状态对其弹性波传播性质有一定的影响，此认识为所做的以泥质砂岩、泥岩和硅质胶结的坚硬砂岩为试样的实验所证实。为保证岩石中存在微隙，对部分试样还作了高温预热处理。实验结果表明，泥质砂岩和泥岩的Ｖ＿ｐ／Ｖ＿ｓ值几乎保持不变，但坚硬砂岩的Ｖ＿ｐ／Ｖ＿ｓ值曲线却在应力达破坏荷载的９０％左右时出现下凹现象，经热处理的硬砂岩的这一下凹现象则更突出。
The influence of triaxiale stress states on the elastic waves velocities of clayey sandstone,claystone and hard siliceous sandstone has been determined by experiments.Some samples are previ-ously treated with heat to intendify crack prodution.Claystone and clayey sandstone show hardly anychanges in the V_p/V_s ratio.For siliceous sandstone there is a minimum in the ratio of the wave veloci-ties at sbout 90%of the failure stress.This minimum especially present in thesiliceous santone previ-ously treated with heat.
出处
《中国煤田地质》
1996年第3期48-51,共4页
Coal Geology of China
