基于 IG GⅢ稳健估计法在大坝沉降监测中的应用

摘要

Understanding dam deformation , finding dam safety problems is that people are concerned and cared , And the deformation monitoring data to determine whether the dam settlement is the most direct and important dam deformation basis .Therefore, access to monitoring data and effective in -depth analysis and treatment , not only is the requirements of the relevant specification , it is impor-tant information reflecting the status of the dam .This paper compares the least squares and IGGⅢrobust estimation method in dealing with the merits of 12 dams in the process of settlement data .From the results, IGGⅢrobust estimation method can overcome the sin-gle state estimation algorithm can not resist the gross error of defects better , along with high precision , fast speed and so on .%了解大坝变形，发现大坝安全隐患是人们所关注和关心的，而大坝沉降的变形监测数据是判断大坝是否变形最直接、最重要的依据。因此，获取监测数据并进行有效深入的分析及处理，不仅是相关规范的要求，更是反映了大坝现状的重要信息。本文比较了最小二乘法和IGGⅢ稳健估计法在处理12期大坝沉降数据过程中的优劣，由结果可知，IGGⅢ稳健估计法更能克服单一状态估计算法不能抗拒粗差的缺陷，同时具备精度高、运算速度快等优点。