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在以往设计中，混凝土重力坝的纵缝一般按临时施工缝处理．据对已建。程调查，灌浆后的混凝土级缝仍为薄弱面，并未使坝体发挥整体作用．针对水口水电站重力坝的一个溢流坝段，从坝体应力、位移分析及坝体稳定安全和结构动力特性几个方面进行了研究，提出在特定条件下，采用级缝不灌浆的实施方案及工程结构的处理措施和运行观测要求．原型监测结果的初步分析表明，采取相应的工程措施后，垂直纵缝不进行灌浆是可行的，这是一项具有较大经济效益和社会效益的措施．
In the past design, concrete gravity dam longitudinal joints are generally treated by temporary construction joints. It has been built. Cheng investigation, grouting concrete grade seam is still weak, did not make the dam to play an integral role. Aiming at the overflow dam section of the gravity dam of Shuikou Hydropower Station, the paper studies the stress and displacement of the dam and the stability and safety of the dam and the dynamic characteristics of the structure. It is proposed that under certain conditions, Engineering structure of the measures and operational observation requirements. Preliminary analysis of the prototype monitoring results shows that it is feasible to carry out vertical grouting without vertical grouting after adopting the corresponding engineering measures, which is a measure of great economic and social benefits.