某水电站蓄水前,大坝基础廊道多处出现变形渗水现象。通过对廊道裂缝发育特征及渗水点分布状况、渗水点基本特征和渗水水化学的分析,并结合变形及渗压监测综合分析,查明了廊道变形和渗水原因。在此基础上提出了治理措施,通过补充固结灌浆和结构缝止水修复治理后,至今效果良好。 Before a hydropower station impoundment, the dam foundation corridor appears multiple deformation and water seepage phenomenon. Through the analysis of the development characteristics of corridors, the distribution of seepage points, the basic characteristics of seepage points and the chemistry of seepage water, combined with the comprehensive analysis of deformation and seepage pressure monitoring, the causes of the deformation and seepage of the gallery were identified. On this basis, put forward the control measures, by adding the consolidation grouting and structural sealing stop water repair and treatment, the effect so far good.