坝体渗流与边坡稳定性研究

在有渗流坝体中,支持毛细水在垂向与横向上都传递静水压力;它与饱水带构成统一的渗流场,一起进行着横向渗流。因此,对坝体应力分布的研究要同时考虑孔隙水压力和渗流驱动力的作用。如将坝体两坡的静水压力(面力)转做渗流驱动力(体力)时,则其分布范围不仅包括浸润曲面以下的饱水带,而且也包括支持毛细水带;在任一点的作用方向与流向相同。横向渗流速度在垂向上呈不等值分布,存在高速带,故渗流驱动力的大小也不是均布的。

THE RESEARCH OF FLOW THROUGH A DAM BODY AND STABILITY OF THE SLOPE

In the dam body with flow, the sustained capillary water transfers hydrostatic pressure not only in the vertical direction but also in the transverse direction. It forms a united flow field with the saturated water zone to perform transverse flow. Therefore, when we study the distribution of the stress in the dam body, we will consider both the action of pore water pressure and the action of flow drive force. If the hydrostatic pressure on both sides of the dam body is taken as the flow drive force (body force),the distribution of the latter will cover not only the saturation water zone under the soak curved surface but also the sustained capillary water zone above the soak curved surface; the action of the force at any point is directed to the same direction as the flow is.While the velocity of the transverse flow varies vertically and there are always high velocity zones,so is the flow drive force eveuly distributed.