With the formulae, the paper discusses the possible relationship between the water seepage flow velocity and the slopes of oil (gas) equipotential surfaces.
根据此关系式，讨论了各种情形水流速度与油气等势面坡度的关系。
Section water ring: prevent concentration in the peripheral Settings, seepage, to change the direction of flow, increasing permeability diameter, reduce the seepage.
截水环：防止集中渗流，在外围设置，以改变水流方向，增加渗径，减小渗流。
In this case, the water table is not flow surface and there is no "seepage surface" on the side walls of drainage river channel.
该条件下的潜水位面不是流面，在排水河渠边壁也不存在所谓的“渗出面”。
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