索赔是在工程承包合同履行过程中，当事人一方由于另一方未履行合同所规定的义务而遭受损失时，向另一方提出赔偿的行为。水利工程建设项目由于规模大，工期长，结构复杂，受自然条件的影响大等特点，实施过程中存在着风险和众多不确定因素。因此在承包工程实际中，索赔是经常 A claim is an act of compensation to the other party if one of the parties suffers losses due to the other party failing to perform the obligations stipulated in the contract during the performance of the project contract. Due to the large scale, long construction period, complicated structure, and great influence of natural conditions, the construction projects of water conservancy projects have risks and numerous uncertainties in the implementation process. Therefore, in the actual contracting project, the claim is often