平原圩区堤防加固方案分析与复核计算

Analysis and Recheck of Reinforcement Scheme of Dikes in a Polder

某平原圩区堤防加固工程全长8 873 m,堤防沿线存在堤顶高程不足、堤身单薄、堤坡稳定性不足、堤身渗水、堤顶路面破损等局部问题,影响大堤防洪安全性,无法满足正常运行要求。为此,在分析堤防现状问题的基础上,开展了有针对性的堤防加固设计方案研究,提出了堤防加固设计原则,实施了堤顶高程复核、堤身断面加固设计、堤坡抗滑稳定复核、堤身防渗加固设计及效果评价等设计内容。加固设计方案充分结合当地实际情况,符合所在流域整体防洪要求,并与其境内已建防洪达标工程相适应,满足工程运行要求。提供的堤防加固设计方案具有一定的普适性,可供平原地区类似堤防工程加固时参考。

The dike reinforcement project in a polder has a total length of 8 873 m.There are some local problems along the dikes, such as the insufficient crest elevation, thin dikes, insufficient stability of dike slopes, leakage of dikes, and damaged pavement on the crest, which affect the flood control safety of dikes and cannot meet the normal operation requirements.Therefore, on the basis of analyzing the present situation and problems, targeted research on dike reinforcement design is carried out, and the design principles of dike reinforcement are put forward.Moreover, we implement the design contents, including the recheck of crest elevation, reinforcement design of dike sections, anti-sliding stability recheck of dike slopes, anti-seepage and reinforcement design of dikes, and effect evaluation.The reinforcement design scheme fully considers the actual local situation, which meets the overall flood control requirements of the river basin and is compatible with the local existing flood control projects for operation.The proposed dike reinforcement design scheme has certain universality and can be used as a reference for dike reinforcement in plain areas.