Analysis of Seepage Hazard Detection and Reinforcement Treatment Technologies for River Levee Projects
河道堤防工程渗透隐患探测及加固处置技术探析

摘要

河道堤防长期承受水位涨落、土体非均质、动物洞穴、施工接缝及历史险情等因素共同作用，易形成集中渗流、 接触冲刷和管涌通道。由于隐患通常埋藏于堤身或堤基内部，仅依赖外观巡查难以及时识别其空间位置与发展程度。 本文在此基础上，针对浅层松散区、堤身裂隙、堤基强透水层和背水坡逸出等典型问题，提出劈裂灌浆、帷幕灌浆、 垂直防渗墙、反滤排水及减压井等组合处置措施。工程应用表明，采用探测与复核相结合的技术路线能够提高隐患定 位精度，并通过防渗与导渗协同控制降低渗透坡降和浸润线，为河道堤防除险加固和汛期安全管理提供技术参考。 

Abstract

 River levees are long subjected to the combined effects of water level fluctuation, soil heterogeneity, animal burrows, construction joints, and historical danger events, which can easily form concentrated seepage, contact erosion, and piping channels. Since hidden hazards are usually buried inside the levee body or foundation, it is difficult to identify their spatial location and development degree in time by relying only on visual inspection. On this basis, this paper proposes combined treatment measures such as split grouting, curtain grouting, vertical cutoff walls, filter drainage, and relief wells for typical problems including shallow loose zones, levee body cracks, highly permeable foundation layers, and seepage outlets on the landside slope. Engineering applications show that a technical route combining detection and verification can improve the positioning accuracy of hidden hazards, and reduce seepage gradients and phreatic lines through coordinated control of seepage prevention and drainage guidance, providing technical reference for risk elimination, reinforcement, and flood-season safety management of river levees.