瞬态面波技术在坝基勘探中的应用

Transient Surface Wave Applied for Exploration of Dam Foundation

针对贮灰场加筑子坝时 ,其坝基存在空洞或低密度层的问题 ,阐述了多道瞬态面波探测原理和方法。结合数据采集情况 ,提出当频散曲线呈杂乱和离散趋势时 ,表明在地层相应深度存在空洞或低密度层。

Cavity or low density layer appears in dam base while secondary dam is built.The principle of exploration with mult tunnel transient surface wave is introduced.Based on the layout of data acquisition system,it is shown that there is cavity or low density layer when the curve of frequency with velocity happens random and dispersion.