三维地质雷达在钱塘江海塘隐患探测中的应用

Application of 3D GPR in Hidden Danger Detection at Qiantang River Seawall

钱塘江海塘长期受到涌潮、强降水等外界作用,原有结构可能存在隐患,传统巡查手段无论是准确度还是效率都难以达到预期。为进一步解决这一难题,在分析三维地质雷达优点的基础上,通过计算海塘隐患模型,论证将三维地质雷达应用于海塘隐患探测的有效性,并归纳典型脱空隐患的异常特征,进而将相关研究成果应用于钱塘江海宁段某处海塘的隐患探测。对异常情况,采用三维地质雷达快速定位、二维地质雷达详细解剖的思路,准确查明堤坝隐患分布位置并进行工程验证,作业模式可提高探测结果的准确度和探测效率。

There may be hidden risks in the original structure of the Qiantang River seawalls affected by external effects such as tidal surge and heavy rainfall for a long time.The traditional inspection methods are difficult to achieve the expected accuracy and efficiency.In order to further solve this problem,based on the analysis of the advantages of three-dimensional ground penetrating radar (3D GPR),this paper demonstrates the effectiveness of applying 3D GPR to the detection of hidden dangers of seawall through the model calculation,and summarizes the abnormal characteristics of typical void hidden dangers.Then the relevant research results are applied to the hidden risk detection of a seawall in Haining section of Qiantang River.Based on the idea of abnormal rapid positioning of 3D geological radar and detailed anatomy of 2D geological radar,the location of hidden dangers of dams is accurately identified and verified by engineering.This operation mode can improve the accuracy of detection results and detection efficiancy.