| 摘要: |
| 视抽水井为定流量边界，并假定流量沿井壁的分布是均匀的，在此条件下建立了黄土厚潜水层深井抽水时的三维渗流模型，并用C++语言编制了三维有限元程序，计算了单井抽水、双井抽水时水位随时间的变化规律，计算结果与观测结果误差较小。另计算了少陵塬隧洞第一期降水方案的降水效果，表明其不能满足施工进度的要求，并对此方案作了修改，在后期施工中取得了良好的降水效果。 |
| 关键词: 黄土潜水层 三维有限元 深井降水 |
| DOI： |
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| Three dimensional finite simulation of deep well dewatering in loess phreatic stratum |
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| Abstract: |
| Three dimensional seepage model of deep well dewatering in loess phreatic stratum was set up.Deep wells were regarded as invariable rate of flow boundary.It was supposed that the rate of flow was even on the wall of wells.Three dimensional program with computer language C++ was made in this paper.The rule in the change of groundwater table with time was analyzed on single well pumping and double wells pumping.The error between calculated results and tested results was small.The dewatering effect of No.1 plan in Shaolingyuan was also analyzed and the result showed that this plan could not meet the work speed.Therefore the plan was optimized based on calculation.From then on,dewatering effect was very good. |
| Key words: phreatic stratum of loess three-dimensional finite element deep well dewatering |
