关键词: 海堤, 抛石底界, 钻探法, 地质雷达法, 海堤工程

Abstract: How to realize the rapid detection of riprap dumping bottom depth of sea embankment is one of the hot issues in the field of water conservancy engineering. In the past, the borehole detection method was mainly used, but because of its long detection period, high cost and only one hole detection result, it is difficult to realize the rapid detection of the whole riprap dumping bottom depth in practice. In view of the rapid detection and continuous information of GPR, a new idea of combined detection by GPR and borehole was proposed. The results of field comprehensive detection showed that there is obvious reflection of radar wave between the riprap and the silt layer. The velocity of radar wave can be calibrated by the results of borehole detection, which can quickly and effectively judge the whole depth scope of the riprap bottom of the sea embankment.

Key words: sea embankment, riprap bottom boundary, borehole detection method, GPR, sea embankment project