磷矿水库除险加固工程大坝防渗处理设计分析

Design Analysis of Seepage Control Measures for Safety Enhancement of Phosphate Mine Reservoir Dam

在水库除险加固设计中,优选适宜的大坝防渗处理方案是解决大坝渗漏问题的关键。文章以磷矿水库为例,通过分析地勘资料找准大坝渗漏位置和成因,查清坝体坝基岩(土)层类型、结构、渗透性,再结合工程投资、施工条件、建筑材料取用情况等进行多方面比较,最终从帷幕灌浆、黏土斜墙、土工膜三个方案中选择了帷幕灌浆方案作为大坝防渗处理措施。本文介绍的磷矿水库大坝防渗处理方案的比选过程,可为同类工程设计提供参考和借鉴。

In the design of safety enhancement for reservoirs,selecting the appropriate seepage control measures is crucial in addressing leakage issues.Taking a phosphate mine reservoir as an example,this paper identifies the location and causes of dam seepage through the analysis of geological survey data.It examines the types,structures,and permeability of dam body and foundation rock(soil)layers,and compares various factors including engineering investment,construction conditions,and availability of construction materials.After considering curtain grouting,clay blanket,and geomembrane options,the curtain grouting scheme is ultimately chosen as the seepage control measure for the dam.The paper outlines the process of selecting the seepage control measures for the phosphate mine reservoir dam,providing valuable reference and guidance for similar engineering designs.