对《基坑降水计算中应用裘布依公式的问题》一文的理解与体会

Understanding and experience on the paper "The problem of Dupuit formula application in foundation pit dewatering calculating"

本文根据裘布依、泰斯公式等假定条件,指出"假设的稳定流和实际的非稳定流"等问题是随裘布依公式与"生"俱来的缺陷,这些缺陷不仅仅表现在基坑降水计算中;裘布依、泰斯公式等建立模型的假定条件中最为根本的部分基本一致,而水文地质条件如此复杂多变,因此,不仅仅是裘布依理论,即便其它理论也难以完整描述基坑降水中复杂的地下水动力场特征;泰斯、裘布依公式等实际应用中,可以说都是利用其近似解,但当近似解的近似程度能够满足实际工作的精度要求时,这种近似解显然是有价值的。在此原则下,利用简捷有效的裘布依公式计算相关水文地质参数未尝不是一种较好的选择。

According to the assumptions of the Dupuit formula, the Theis formula and so on, it is pointed out the problems in ＂the hypothetical steady flow and the actual unsteady flow＂ are the defects of Dupuit formula which exist in the calculating of foundation pit dewatering; It is the basic consistent with the Dupuit formula and Theis formula such as the establishment of the model of the most fundamental assumptions, but the hydrogeological conditions are so complicated and changeable, therefore, not only Dupuit theory even if the other theory are also difficult to complete the characteristic description of the complex dynamic groundwater field in the foundation pit dewatering; In practice, the Theis formula and Dupuit formula use the approximate solutions, when the approximate solutions can meet the approximation of the accuracy degree in practice engineering, the approximate solutions are obviously valuable. It might be a good choice to use the concise and effective Dupuit formula for the calculation related the hydrogeological parameters.