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几年前,人们经过测量发现:吉林省丰满水电站的混凝土大坝坝顶面增高了,比初建时累计抬高约30毫米。这一反常现象,引起了有关部门的震惊。水利部门针对这一关系大坝下游千百万人民生命财产安全的问题,召集专家们进行了一次“会诊”。来自全国各地的水利、建筑、建材方面的专家,根据勘察、试验结果和对有关资料的分析研究以后,一致认为:坝顶抬高是由于混凝土受冻害后,引起体积膨胀而造成的。
A few years ago, people measured and found that the top of the concrete dam at the Fengman hydropower station in Jilin Province has been increased, about 30 millimeters more than its original height. This anomaly has aroused the shock of the relevant departments. In response to the issue concerning the safety of life and property of millions of people downstream from the dam, the water conservancy department called experts to conduct a consultation. Experts from all parts of the country’s water conservancy, construction and building materials agreed on the basis of the survey and test results and the analysis of the relevant data that the dam crest elevation is caused by the volume expansion caused by concrete damage caused by frost damage.