插值切割法用于低应变反射波法波形曲线的解释

该文讨论了低应变反射波法实测曲线与理论曲线的差异，实测曲线由于受多种因素的影响，往往包含有许多干扰，曲线上有时出现一些虚假反射波，这种现象严重影响了对曲线的分析和解释。为了消除这种影响，运用插值切割法来处理实测曲线。与最小二乘平滑滤波、普通数字带通滤波等方法相比，插值切割法有着较好的去干扰和虚假异常的能力，处理后的曲线与理论曲线比较接近，易于判断解释。通过实例分析，说明该方法能取得较好的应用效果。

APPLICATION OFINTERPOLATING CUT METHOD TO WAVEFORM CURVE INTERPRETATION IN LOW STRAIN REFLECTED WAVEMETHOD

The paper discusses the difference between the measured curve and theoretic curve of the low strain reflected wave method. The measured curve contains a lot of disturbances because of the influence of many factors. There are some false reflected waves occured on the curve, seriously disturbs the analysis and interpretation of the measured curve. In order to eliminate the influence, the paper applies the interpolating cut method to the measured curve. In comparison with the least square smoothed filtering and digital band-pass filtering, the interpolating cut method has the ablity to remove the disturbances and false anomalies. The processed curve is close to the theoretic curve. The analysis of examples shows that better applicable result can be obtained by this method.