应力波反射法在水泥砂浆锚杆质量检测中的应用

Application of the Stress-wave Reflection Method on Detecting Quality Evaluation of Cement Mortar Anchor Bar

锚杆在地质工程中应用比较普遍,本文介绍某水电站工程水泥砂浆锚杆质量检测中典型的波形及锚杆质量分类分析方法。锚杆的缺陷通常是由于注浆程度不够造成的,通过对反射波的振幅、相位、衰减进行分析,推断锚杆的缺陷性质。对锚杆检测工作中遇到的锚杆长度、杆体速度和锚杆质量分类等问题做初步探讨。

Anchor bars have been widely used in geological engineering. This paper introduees the typical curves and the method of analysis on detecting quality evaluation of the cement mortar anchor bars. We can get to know the characters of the limitations of anchor bars by analyzing amplitude, phase and attenuation of the reflection wave. The limitations of anchor bars are usually caused by incompletely grouting. In this paper, some problems such as the length of the anchor bar, velocity of the anchor bar and the quality evaluation of the anchor bar are also discussed.