| 真空井点降水试验分析与数值模拟 |
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| 引用本文： | 贾向新,聂庆科,王英辉,梁书奇.真空井点降水试验分析与数值模拟[J].岩土力学,2014,35(Z2):607-612. |
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| 作者姓名： | 贾向新 聂庆科 王英辉 梁书奇 |
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| 作者单位： | 1.河北建设勘察研究院有限公司，石家庄 050031；2.河北省岩土工程技术研究中心，石家庄 050031 |
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| 基金项目： | 河北省建设科学技术研究计划（No. 2010-136）。 |
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| 摘 要： | 基于某真空井点降水综合试验,建立了三维地下水流数值模拟模型,将模型模拟预测数据与试验观测数据进行对比,研究真空负压和井点间距对真空井点降水效果的影响,得出了真空井点周围渗流场的变化性状,提出了真空井点周围真空及重力场耦合区、耦合场与重力场过渡区和重力场区3个区的概念。得出了不同负压在不同井点深度条件下对地下水渗流场的影响变化。对比结果表明,建立的真空井点降水模拟分析方法,能够较好的模拟真空井点周围观测井水位与出水量的相关关系;分析方法可用于真空井点降水试验分析,且为真空井点降水设计提供了依据。
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| 关 键 词： | 真空井点 降水 数值模拟 真空度 渗流场 耦合区 |
| 收稿时间： | 2014-06-15 |
Analysis and numerical simulation of vacuum well point dewatering test |
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| JIA Xiang-xin,NIE Qing-ke,WANG Ying-hui,LIANG Shu-qi.Analysis and numerical simulation of vacuum well point dewatering test[J].Rock and Soil Mechanics,2014,35(Z2):607-612. |
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| Authors: | JIA Xiang-xin NIE Qing-ke WANG Ying-hui LIANG Shu-qi |
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| Institution: | 1. Hebei Research Institute of Construction and Geotechnical Investigation Co. Ltd., Shijiazhuang 050031, China; 2. The Geotechnical Engineering Technology Center of Hebei Province, Shijiazhuang 050031, China |
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| Abstract: | A 3D numerical model for flowing groundwater is built based on field vacuum well point dewatering test. Through comparison of observation data and prediction data calculated from numerical model, influences of the vacuum negative pressure and the interval among dewatering wells on the dewatering effect are studied. Variation characters of the seepage field around the vacuum well point are described; a conception of three areas, i.e., coupled field area, transition area and gravity field area is proposed; and changing law of seepage field with negative pressure and depth of well point was obtained. Comparison results show that the numerical model can reflect the relationship between the water level in the observation well and the water yield well. This method can be used in analysis of vacuum well point dewatering test and provide a reference for practical design. |
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| Keywords: | vacuum well point dewatering numerical simulation vacuum degree seepage field coupled field area |
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