【摘要】 平行或垂直岩石层理进行单轴向加载直至样品破坏强度的95%左右稳压,在充水或不充水时,观测到的干燥样品及饱和样品内部P波速度的变化特征如下: 1.样品临破坏前P波速度在垂直与平行岩石层理方向上的变化具有很大的差异性。2.P波振幅及波形也随着应力的不断增加而发生变化。更多还原

【Abstract】 The rocks of parallel bedding and vertical bedding were loaded under uniaxial compression until stable was kept about 95 percent of failure intensty of the specimen. When the specimen were full of water or dry, the variation characteristics of p-wave velocities interior and saturated specimen obseved were as follows:1. Changes of p-wave velocities were quite different in both direction of parallel bedding and that of vertical bedding when the rock would soon become a failure.2. The amplitude of p-wave and its shape varied with ever-increasing stress.更多还原