一、前言 直线比例法(主要包括勃法、莱因法、米哈依洛夫法)在计算建筑物基底渗透压力时,假定渗流中的水头损失是沿着折算的地下轮廓线均匀分配的,因而计算方法简便,在当前中小型水闸、船闸、船坞工程设计中得到广泛的应用,并列入了设计规范。但是,直线比例法没有考虑渗流区域边界形状的影响以及土壤的不均匀性,因而计算精度不高;同时,这种方法也没有考虑透水层深度 I. INTRODUCTION The linear ratio method (mainly including Bofa, Rein, Mikhailov’s method) calculates the heading pressure of the building and assumes that the head loss in the seepage is evenly distributed along the converted underground contour. Therefore, the calculation method is simple and has been widely used in the design of the current medium and small sluice gates, ship locks and docks, and has been included in the design specification. However, the linear ratio method does not consider the influence of the boundary shape of the seepage area and the heterogeneity of the soil, so the calculation accuracy is not high; at the same time, this method does not consider the depth of the permeable layer.