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由于丰满大坝建设期施工质量差 ,存在很多严重缺陷 .运行后 ,通过多次改建和加固 ,建立并逐渐完善了大坝安全监测系统 ,进行了大量的调查、试验研究工作 .包括坝基地质勘探及试验、大坝抗震调查及试验、大坝混凝土性能调查及试验、大坝混凝土耐久性调查及试验 .在对大坝恢复改建的基础上 ,运行期进行了大坝上、下游面补修、大坝防渗、预应力锚固等加固处理 ,针对运行中出现的问题又进行了溢流面抢修、上游面 2 2 6 .0 0～ 2 4 5.0 0 m高程防渗、大坝全面加固等 .多年监测成果表明 ,大坝变形和渗透变化基本正常 ,大坝加固工程效果显著
Due to the poor construction quality during the construction period of Fengman Dam, there are many serious defects.After the operation, the dam safety monitoring system has been established and gradually improved through many times of reconstruction and reinforcement, and a great deal of investigation and experimental research has been carried out, including the geological survey of the dam foundation And test, dam seismic survey and test, dam concrete performance survey and test, dam concrete durability survey and test.Based on the restoration and reconstruction of the dam, during the operation of dam upstream and downstream face repair, Dam seepage control, prestressed anchorage and other reinforcement treatment. In view of the problems occurred in the operation, the overflow surface was repaired again. The upper reaches of 22 6 0 0 ~ 24 5.0 0 m elevation seepage prevention and the dam were fully reinforced. Years of monitoring results show that the deformation and infiltration of the dam basically normal change, the dam reinforcement effect is significant