Abstract: In rehabilitation of overflow sections, to prevent the increase of uplift pressure, seepage prevention and dam drainage must be stressed. In construction, proper technology should be adopted and measures should be taken to prevent cracks on the pier and on the overflow surface.

摘要： 溢流坝段补强加固时，必须做好坝体防渗和排水，以防坝体渗漏和扬压力增高。溢流坝段施工时要特别注意，以免闸墩出现裂缝；溢流面补强要注意施工工艺，并采取必要措施，以防止产生裂缝。文章以工程实例来说明上述几个问题，以引起重视。