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棉花滩水电站大坝为全断面碾压混凝土坝 .为了解大坝碾压混凝土内在品质和相关的物理学性能指标 ,于 1 999年开展了坝体钻孔取芯、芯样描述、压水、超声波物探及物理力学性能测试等项工作 .本次取芯试验共钻孔 2 0个 ,芯样总长 2 52 .0 2 m,分析结果表明大坝工程第一枯水期混凝土质量状况良好 .本文还就次高温天气施工和集料裹粉等问题进行了初步分析
Mianhuatan Hydropower Station dam is a full-face RCC dam. In order to understand the inherent quality of RCC and related physical performance indicators, in 1999 the dam body drilling, core description, water pressure, Ultrasonic geophysical properties testing and physical and mechanical properties of the work of this core test a total of 20 holes drilled core length of 522.02 m, the analysis results show that the first dry season of dam concrete quality is good. Sub-high temperature weather construction and aggregate powder and other issues were analyzed