土石坝渗流观测资料分析模型及方法

Analysis model and method of seepage observation data for earth rock-fill dams

为了有效地根据土石坝的原型观测资料来分析坝体和坝基中存在的渗流问题,本文以渗流理论为基础,结合工程实际,考虑了水位、降雨量、坝基排水以及时效等因素对渗流的影响,建立了土石坝坝体和坝基测压管以及通过大坝渗流量等观测资料的统计分析模型和方法。经对青山和对河口水库等工程的实际应用,说明其效果是令人满意的。

The authors put forward some better statistical models and methods in order to effectively apply the prototype observed data to exactly analyze the existing problem due to seepage at several earth rockfill dams.On the basis of the seepage theory and engineering practices,the models and methods were established for analyzing the measured variationof piezometers and seepage quantity of the earthrock fill dam and its foundation,taking account of the influence of water level,drainage,rainfall and time effect etc.Application of these methods to Qingshan and Duihekou dams shows that the result was satisfactory.