井下检测工具 GeoStru.DownHole.v2014.9.1.261 1CD

The downhole seismic method (DH) measures the time taken for the P and S waves to move between a seismic source located on the surface of the ground, and the receivers, placed inside a borehole.

With the direct method, initially, must be corrected the travel times (t) measured along the source-receiver paths to take into account the inclination of the path of the waves and then realized the chart tcor-z, for both P waves and S waves. Thus the average speed of seismic waves in homogeneous layers of soil is represented by the inclination of the line segments along which are aligned to the experimental data.
井下地震方法测量的P波和S波的时间之间，移动一个位于地面的表面上的地震源，和置于井眼内的接收器。使用 DownHole 我们可以测到从源到接收机的距离，P波和S波的速度，以及一些重要的岩土参数等。