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观音岩水电站是金沙江中游河段的一座)等大(1)型水利工程,该电站左岸混凝土坝段坝基地质条件复杂,溶蚀现象发育,通过固结灌浆生产性试验,经过加密灌浆孔距,使灌浆孔间排距在11 25 m左右后,检查孔平均透水率降至11 3 Lu以下,压水检查孔段全部合格。重点介绍循环式灌浆方法 ?序和ò序灌浆孔施工顺序,确定合理的灌浆施工参数和施工工艺措施,并对物探孔灌浆前后声波检测情况进行了系统分析,可供同类水电站参考和借鉴。
Guanyinyan Hydropower Station is one of the middle reaches of the Jinsha River) and other large (1) -type water conservancy projects. The geological conditions of the dam concrete foundation on the left bank of the power station are complex and the erosion phenomenon develops. Through the consolidation grouting productivity test, After the distance between the grouting holes was about 1125 m, the average water permeability of the inspection hole fell below 11 3 Lu, and all the holes in the water-pressure inspection hole were qualified. The order of grouting and the order of grouting holes are introduced, the reasonable grouting construction parameters and construction technology measures are introduced. The sound wave detection before and after the geophysical hole grouting is systematically analyzed, which can be used as a reference for similar hydropower stations.