古田岭里水库土坝涵洞周边高喷加固处理

High pressure jet grouting at the culvert of Lingli reservoir earth dam

土坝防渗加固最常用、技术相对成熟的方法之一是高压喷射灌浆,但在实际施工中,位于坝体较高部位的涵洞处理一直是个难题。古田县岭里水库土坝高喷加固处理时,通过精确布孔和钻孔并结合采用各种喷射的灵活组合和调节喷嘴方向,并按严格的技术措施及工序管理施工,确保涵洞周边达到土坝除险加固的设计规范要求,对类似工程具有参考与借鉴价值。

High pressure jet grouting is a well-developed method in earth dam rehabilitation,but culvert treatment is quite difficult as its high level.In rehabilitation of Lingli reservoir earth dam,by precise arrangement and drilling of grouting holes,together with combination of different grouting methods and adjustment of nozzle direction,grouting was carried out on the basis of technical and process requirements.As a result,good effect of culvert treatment was achieved,worthy reference.