在数值模拟中重点对移动和固定网格法等进行了研究，并应用固定网格法对无压渗流场自由面进行了搜索计算。
We will have focal point study for moving and fixing grid law etc., have the application to the free surface search of he impressure influent fields.
进一步研究了考虑坑外渗流自由面随时间变化的基坑工程时间效应和空间效应。
The time and spatial effects of excavation considering variation of seepage free surface outside of foundation pit were further investigated.
在岩土边坡、土坝、地下洞室及地下水运动等渗流分析中，均存在有渗流自由面问题。
Seepage free surface issue exists in analysis of the seepage concerning geotechnical slope, earth dam, underground cave and groundwater movement.
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