关键词: 定期安全评价, 在线评价, 指标体系, 评价准则, 分级标准

Abstract: Comprehensive regular evaluation is an important part of intelligent control of dam safety risk. Based on Guide for Safety Assessment of Large Dams for Hydropower Station in Operation and multisource information, this paper puts forward an online comprehensive regular evaluation model. Taking Tongjiezi gravity dam as an example, the implementation scheme of the key issues is put forward, including the establishment of evaluation index system, the evaluation criteria of each index and the setting of grading standard. The comprehensive regular evaluation index system with three level evaluation indicators and 36 indicators is constructed. The first level contains 8 indexes, such as the safety standard, flood control safety, dam foundation safety, dam structure safety degree, dam body operation state, flood discharge energy dissipation facility, metal structure safety and slope safety. The third level contains 36 indexes, such as deformation stability, seeapge stability, anti-sliding stability safety and et al. As well, four types of indicators assessment criteria and classification standards are built, including the evaluation conclusion evaluation, key indicators & inspection evaluation, non-key indicators & aging & inspection evaluation and multi-source information integration evaluation. The model is of the characteristic of objective and operable evaluation conclusion, which is helpful to realize the online intelligent regular evaluation of dam operation safety grade.

Key words: regular safety evaluation, online evaluation, index system, evaluation criteria, grading standard