你用的是2007版本的，我用的是2004版本的，所以“在 keyin菜单，分析设定parent选取计算好的渗流模型文件，或者other geostudio analysis”
这些项都没有呢
郁闷中！
我上面贴出来的那几个图都没有人帮我分析一下哦1:'( :'( :'( SLOPE/W 2007中用多步不排水强度法分析水位骤降问题，比2004版本有所改进。
http://geo.cntech.com.cn/news/2007-08/geo-1731.html
把SLOPE/W和SEEP/W结合起来考虑水位骤降问题是很方便的。 在SLOPE/W2007的用户手册，有专门对于水位骤降的说明：
3.15 Rapid Drawdown Analysis Methods
Using SLOPE/W, stability during rapid drawdown can be modeled in two approaches, namely the “effective strength” approach (simple and rigorous) and the “staged undrained strength” approach.
In the effective strength approach, the effective stress parameters are used to compute the effective shear strength of the embankment during rapid drawdown. The advantage of this approach is that effective shear strength parameters are used which are fundamentally better. The disadvantage of this approach is the extra work required to estimate the pore water pressures within materials during the drawdown process.
In the staged undrained strength method, the shear strength is evaluated based on the total stress parameters and consequently, the requirements associated with the estimation of the pore water pressure conditions for effective stress analysis can be avoided. The disadvantage of this approach is that total stress parameters are used and these total stress parameters are not commonly available. Furthermore, the hydraulic properties of the materials are ignored and the stability of the embankment dam at different times during the drawdown process cannot be evaluated.
rigorous “effective strength” approach需要借助SEEP/W2007计算水位骤降后坝体内的水压力消散，实际上simple “effective strength” approach是最危险的情况，即库区水位降了，但坝体内的水压力还保持不变。
The Staged Undrained Strength Method
The “3-stage” undrained strength method proposed by Duncan, Wright and Wong (1990) has been implemented in SLOPE/W. In short, the 3-stage analysis method can be summarized as follows:
The first stage involves the stability analysis of the embankment before drawdown when the water level is high and the pore water pressures in the materials are at a steady state condition. Both the effective normal stress and shear stress along the slip surface are used to determine the undrained shear strength for materials that do not drain freely.
The second stage involves the stability analysis of the embankment after drawdown when the water level is low and the pore water pressures in the materials are at a steady state condition. The effective normal stress obtained from stage two together with the effective strength parameters are used to compute the drained (effective) strength along the slip surface.
Both the drained and undrained strengths at the slice base along the slip surface are then compared, and the smaller strength is chosen as the computed shear strength which will be used in the third stage. The comparison is needed in order to avoid using undrained strengths greater than drained strengths, which cannot be mobilized if cavitation or drainage occurs (Duncan, Wright and Wong (1990).
The third stage involves conducting a stability analysis using the computed shear strengths and the final drawdown water level. The computed factor of safety from the first and second stages are ignored and only the factor of safety computed from the third stage analysis is used to represent the stability after rapid drawdown.
[ 本帖最后由 basara 于 2007-9-21 14:41 编辑 ] to basara:能不能发个2007给我啊？ 有没有geoslope的群啊，有问题就可以直接请教了
诸位楼上的大虾们，能不能加我qq：17837483啊，需要你们帮帮忙！！ 45276031 8# changqing
多谢版主的解答 很多问题不懂，请高手加我QQ：18066165 有什么SLOPE/W2007的专业群啊 20# basara
对于水位骤降过程，画边界条件的时候，若是选中Fn#，potentail seepage face review是否要勾选？
看了一下理论手册131页的说明，好像是要勾选的，将水头边界条件转化为流量边界条件，以搜索库水水位以上的潜在渗流面。就是不太清楚如果不勾选的话，水位以上的点的水头要小于该点的y坐标，此时程序又是如何考虑的？
学习了，正在研究渗流 顶顶顶，谢谢楼主，非常有用的资料 mark,要仔细看看 工作需要，进来学习一下！
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