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重力坝剖面设计的任务在于选择一个既满足稳定和强度要求,又使体积最小和施工简单、运行方便的剖面。广西隆安县马村水库浆砌石溢流坝虽然满足稳定要求但在正常蓄水位、设计洪水住校核洪水位情况下,坝基底面坝踵处均出现较大的拉引应力,未满足规范要求,问题十分严重,必须进行加固处理。经方案比较,推荐采用调整坝体剖面结合帷幕灌浆的措施来加固溢流坝,以改善坝基应力分布,满足大坝强度要求。
The task of gravity dam profile design is to choose a profile that meets both the requirements of stability and strength, but also makes the smallest and simple construction, easy operation. Although the masonry overflow dam of Macun reservoir in Longan County, Guangxi Province, meets the stability requirements, large pull-in stress occurs at the heel of the dam foundation at normal water level and design flood water level, which does not satisfy the standard Requirements, the problem is very serious and must be reinforced. According to the plan, it is recommended to adjust the dam body profile with curtain grouting measures to reinforce the overflow dam to improve the stress distribution of the dam foundation to meet the dam strength requirements.