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该研究项目是结合在建的沙牌碾压混凝土拱坝而进行的． 本文总结了碾压混凝土拱坝横缝或诱导缝重复灌浆的最新研究成果， 着重介绍重复灌浆管路系统布置、橡胶套阀出浆盒的结构、超细水泥灌浆材料的性能以及在有裂缝的混凝土块上进行的模拟灌浆试验结果． 试验结果表明， 橡胶套阀的开环压力为０－０６ ＭＰａ ～０－１５ＭＰａ， 在一个月内能实现２ ～３ 次重复灌浆， 超细水泥灌浆材料能灌入０－２ ～０－３ｍ ｍ 的混凝土裂缝．
The research project is carried out in conjunction with the Shapai RCC arch dam under construction. This paper summarizes the latest research results on the repeated grouting of transverse joints or induced joints of RCC arch dam, and focuses on the layout of the repeated grouting pipe system, the structure of rubber overspray box, the performance of ultrafine cement grouting material Simulation grout test results on concrete blocks. The test results show that the open-loop pressure of the rubber sleeve valve is 0-06 MPa ~ 0-15MPa, and the grouting can be repeated 2-3 times within one month. The ultra-fine cement grouting material can be poured into the grouting material of 0-2-0-3m Concrete crack.