下桥水电站溶洞封堵处理施工技术

下桥水电站地形、地质情况复杂，大部分为硅酸盐岩地形，岩溶比较发育，属岩溶峰丛-洼地的地貌景观，坝基及坝肩渗漏严重，通过采用单管高压旋喷灌浆和孔内布置小钢筋桩的方法对溶洞进行特殊处理取得良好的效果，对水库有效蓄水和保证电厂正常运行具有重大意义。

Cavern Blocking Technique Used in Xiaqiao Hydropower Station

Xiaqiao hydropower station builds upon calcareous silicate falling under the calcareous silicate rock peak and draw geomorphologic landscape. Its geographical complexity has resulted in the leakage in the base and abutment of the dam. And the solution, hearing greatly on the smooth operation of the plant, was the special technique of single tube high pressure jet grouting and placing reinforced concrete pile in the hole which produced good results.