三门峡大坝温度观测资料分析

Analysis on Monitored Temperature Data of Sanmenxia Dam

三门峡水利枢纽大坝为混凝土重力坝,原设计选择其溢流坝和安装场坝为重点观测坝段,因此,在施工中埋设了各种观测仪器1000多支。经对1958～1988年气温、坝体混凝土温度、基岩温度及水库水温观测资料分析表明:三门峡大坝温度变化规律虽与一般重力坝不同,但它却比较全面地反映了防洪与径流发电具体运用的特性。

The Sanmenxia Dam is a concrete gravity dam. According to the original design, the overflow dam section and the installation site section are selected as the key monitoring sections. Thus, more than 1000 monitoring instruments have been embedded during the construction. It is shown through analysing the monitored data of air temperature, concrete temperature of the dam body and the temperatures of bedrock and water in the reservoir that the law of the Sanmenxla Dam temperature variation has comprehensively reflected the specific operational features both for the flood control and run-of-river generation, even though it is different than that of other general gravity dams.