两种主要测量手段在抛石护岸工程水下质量检测中的应用*

工程质量检测是保障工程发挥经济与社会效益的重要环节，其检测结果的正确性关系到工程能否正常运行。水下工程质量检测的主要测量手段为单波束测深仪与多波束测深系统，其测量结果的差异会对检测结果产生影响。对这2种测量手段施工前、后的测量数据以及差值的检测断面数据进行定性和定量分析。结果表明，施工前2种测量手段测量数据基本吻合，但施工后抛石增加了水下地形的复杂度，使两者的测量数据差异增加。此外，单波束的角度和航迹线的偏移对差值生成的检测断面数据有较大的影响，使两者的检测断面数据差异较大。据此，给出提高单波束检测精度的建议。

Application of two main measurement methods in quality detection of riprap project

Quality detection is an important link to ensure economic and social benefits of the project.The correctness of the detection result relates closely to the normal operation of the project.Single-beam sounder and multi-beam sounding system are the main measurement measures for the engineering quality detection, and the difference between their measurement results will affect detection result.Qualitative and quantitative analyses are carried out to the measurement data before and after construction by the two measurement measures and the detected sectional data of the difference, and the results show that there is not much difference of measurement data between the single-beam and multi-beam before construction.After construction, riprapping increases the underwater terrain''s complexity and the difference of measurement data by the two measures.In addition, the angle and route deviation of the single beam increase the detection errors.Based on the research results, we put forward suggestions on improving the accuracy of the single beam detection.