On the basis of the analysis of the test data, the additional force linearly increased with variation of water pressure in the aquifer, and increased with the increase of the depth and with the content of coarse soil particle in the overburden layer.

• 试验结果表明：竖直附加力随含水层降压量的增大而线性增加，随深度增大而增大，随土层中粗颗粒含量增多而增大。