phreatic

A Study on Chemical Composition of Alluvial Plain Phreatic Water in Nanjing City

南京市区冲积平原浅层潜水化学成分的成因分析

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The variation characteristics of shallow confined groundwater are similar with phreatic water.

浅层承压水含水组的地下水质变化特征和潜水基本一致.

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Tertiary rock can not be main target layer for uranium exploration because of epigenetic phreatic oxidation, low organic matter content, weak transformation of neotectonic movement.

第三系以潜水氧化为主，还原物质缺乏，而且新构造运动对其改造微弱，总的成矿条件不理想，不宜作为主攻目的层。

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The predication of the ground water head and influence on the old well field after the new wells come into operation is done by the method too. The guarantee of pumping rate is estimated by the method of water balance in phreatic aquifer.

还利用补给层的水量平衡评价越流含水层开采量的保证程度，预测了新水源地投产后对老水源地的影响。

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The calculating model of phreatic water evaporation in the Jianghuai region is given by means of statistic and water balance methods.

用统计方法和水量平衡法推导出江淮地区潜水蒸发经验计算模型。

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Review of research on ecosystem health in riverine phreatic zones

河流潜流带的生态系统健康研究进展

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The climate warming is the governing factor on the rise of the groundwater temperature intensified by groundwater movement and precipitation, which is obvious for phreatic water and confined water.

对于孔隙潜水和孔隙承压水，地下水温度呈上升变化的本质原因是全球气候逐年变暖，而地下水活动和大气降水的增强起到了促进作用，特别是对孔隙承压水温度的上升作用更加明显；

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Under the same hydrologic-geologic condition, the phreatic parameters of well pumping is little higher than that of well artificial replenishment, but the method used for pumping water process can be used to get approximatively the phreatic parameters of artificial replenishing process.

对等水文地质条件下，井抽水过程求得的水文地质参数稍大于井回灌过程求得的水文地质参数，但可以用抽水过程求参方法近似求解井回灌过程的水文地质参数；

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Some improvements on calculating phreatic water permeating recharge and ground surface evaporating capacity by ZFP

对零通量面法测算潜水入渗补给量和地表蒸发量的一点改进

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To ensure the heightening engineering of tailing dam to successfully carry through, siphonic drainage system was adopted to lower the phreatic line in the dam.

为保证尾矿坝加高工程的顺利实施，采用虹吸排渗系统来降低坝体内部的浸润线高度。

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three-dimension migration test of radio-nuclides in weak phreatic aquifer

核素在弱含水层三维迁移的现场示踪试验

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The phreatic groundwater both in the diluvial fan of the Qingtongxia gorge and in the fluvial plain is mainly recharged by the influent seepage of irrigation water from the Yellow River.

青铜峡洪积扇单一潜水及冲湖积平原上覆潜水，主要接受黄河灌溉水的入渗补给。

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With considering the effect of seepage, the position of the exit point and the phreatic surface, as well as the total head was calculated through iteration at first. The seepage forces were also determined according to the hydraulic gradient.

考虑渗流作用时，先采用有限元法计算坝体渗流场，通过迭代计算出稳定渗流的逸出点和浸润线位置，并根据水力梯度计算坝体所受的渗透力。

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phreatic water regime on divide

分水岭潜水动态

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the differences of the mechanism of water movement between lysimeter and natural phreatic water situation and the analysis of errors of them

地中蒸渗计与自然潜水水分运移机理差异及误差分析

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At present, the pollution of phreatic water is also very serious.

目前, 浅层地下水的污染也十分严重.

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In the seepage theory, the current expression of boundary condition on phreatic surface is aimed at a kind of seepage.

渗流理论中现有的潜水面边界条件表达式是针对特定方向的一类潜水渗流问题而给出的。

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Development of karst in this area shows obvious vertical zonation, i. e. the vertical vadose zone, the horizontal phreatic zone and the transitional zone. At the bottom of vertical vadose zone and the top of the horizontal phreatic zone, the properties of reservoir are best.

本区岩溶具明显的垂直分带性，可分为垂直渗流岩溶带、水平潜流岩溶带和过渡带，其中垂直渗流带底部及水平潜流岩溶带上部储集物性最佳。

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The generation of phreatic surface reservoir is a combined result of many geologic factors.

此外,结合大量的表层结构调查工作,提出了真假潜水面这一概念.

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Groundwater systems have shallow phreatic water-confined water system and medium layer confined water system.

地下水系统具有双层含水结构：浅层潜水&承压水系统和中层承压水系统。

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