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大坝沉陷实质上是在荷重和自重作用下产生的坝基变形和坝内孔隙中空气和水的压缩及排出而产生变形的综合,以前已有很多文章讨论、研究了土坝的沉陷规律,给出了幂函数、指数函数和对数函数等类型的经验公式,但考虑到首次观测以前已有的沉陷量,在建立回归模型选用的各因子中应加入常数C,这样才能使回归模型公式和实际测值相符,也能利用回归公式估算首次观测前的沉陷量。本文将就此对对数回归曲线作一番探讨。
The dam subsidence is essentially the deformation of the dam foundation under the action of load and self-weight, and the deformation and deformation of air and water in the pores in the dam. Previously, many articles discussed and studied the law of earth dam subsidence, Exponential function and logarithmic function, but taking into account the amount of subsidence that has existed before the first observation, a constant C should be added to each factor used in establishing the regression model so that the regression model formula The actual measured values match, but also can use the regression formula to estimate the amount of subsidence before the first observation. This article will be on this logarithmic regression curve to explore.