浯溪口碾压混凝土重力坝钻孔取芯和压水试验成果分析

钻孔取芯和压水试验是判定挡水建筑物大体积混凝土内部施工质量和抗渗性的有效手段，浯溪口碾压混凝土重力坝采用钻孔取芯和压水试验的方法对碾压混凝土施工质量进行了检测。本文介绍了浯溪口碾压混凝土坝体混凝土分区设计、钻孔压水试验方案及钻孔位置的选取，通过对其碾压混凝土芯样外观、层面和缝面结合质量、芯样获得率、透水率等检测项目进行统计分析，对碾压混凝土的质量进行了评价，并依据试验情况对碾压混凝土坝的钻孔取芯和压水试验提出了建议。

Results and Analysis of Core Boring and Water Pressure Test for Wuxikou roller compacted concrete gravity dam

The borehole coring and the water pressure test are reliable means for judging the construction quality and imper-meability of massive concrete in water retaining structures. Method of roller compacted concrete( RCC)gravity dam of Wux-ikou hydro-junction project with core drilling and water pressure test for the detection of construction quality of roller com-pacted concrete. This paper introduces the design of concrete partition of the Wuxikou RCC dam,the experimental scheme of drilling water pressure and the selection of drilling position,the quality of roller compacted concrete was evaluated by the statistical analysis of the appearance,level and seam surface bonding quality,core fracture rate,water penetration test and so on,according to test conditions,the paper puts forward some suggestions on the borehole coring and the water pressure test of RCC dam.