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扬压力是作用于坝底的一项重要而隐蔽的荷载,是关系到工程的安全和经济的重要因素.影响扬压力的因素较多,边界条件较难确定,目前尚缺乏精确的计算方法.设计常以标准图形或模拟试验确定有关参数.原型观测仍是检验和研究扬压力的有效方法. 黄河盐锅峡工程于1961年初步建成,至今已运行二十余年.本文结合原型观测成果,对坝底扬压力的设计以及在实际工作中遇到的一些问题,作了初步的分析和探讨.
Yang pressure is an important and hidden load acting on the dam bottom, which is an important factor that affects the safety and economy of the project. There are many factors that affect the uplift pressure, the boundary conditions are difficult to be determined and there is no accurate calculation method. The design often uses standard graphics or simulation tests to determine the relevant parameters.The prototype observation is still an effective method to test and study the uplift pressure.The Yellow River Yan Gorge Project was initially built in 1961 and has been in operation for more than 20 years.Based on the results of prototype observation, The design of the pressure at the bottom of the dam and some problems encountered in the actual work, made a preliminary analysis and discussion.