潜水层
- 网络phreatic aquifer;water table aquifer
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而宝鸡峡灌区完全依靠人工沟渠输、排水,故考虑沟渠的渗漏损失非常有必要,而且宝鸡峡灌区地处黄土高原南部,地下水水位偏低,有限的地表径流很难通过潜水层补给承压水。
However , the Baoji Gorge Irrigation District is located in the south part of Loess Plateau , the groundwater level is low . The limited runoff in surface is recharging the confined water through the phreatic aquifer very difficultly .
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结果认为,通辽地区含水层系统可概化为3层非均质各向异性的统一潜水层组。
The conclusion is drawn as bellow : Tong liao area is a three layers nonhomogeneous and anisotropic unified phreatic aquifer group .
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黄土潜水层深井降水三维有限元模拟研究
Three dimensional finite simulation of deep well dewatering in loess phreatic stratum
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潜水层以下海滨砂矿毛矿精选新工艺研究
Study on new technology for concentration of raw material from deep beach placer
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潜水层地下水及其营养物质入湖实验与数学模拟研究
Experimental and Mathematical Simulation of Groundwater and Its Nutrients from Unconfined Aquifer into Lakes
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水中的石油类污染物在地表以下迁移性很强,容易下渗进入潜水层。
And oil contaminants in water have stronge transportability in underground and can permeate into groundwater with ease .
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模拟结果表明:(a)潜水层周期平均水位高于静止水位;
The simulation results demonstrate that ( 1 ) the mean water table is higher than the still water table ;
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提出了一种用气举和自激振荡脉冲射流相结合的方式开采潜水层滨海砂矿的新方法。
The method using the airlift and the self excited oscillation jet for exploiting deep beach placer has been presented .
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隔层窜流现象的数值模拟研究潜水层间氧化带砂岩型铀矿特征与成矿模式&以滇西地区山间盆地为例
Characteristics and metallogenic models of phreatic interlayer oxidation zone sandstone-type uranium deposits : Case study of intermontane basins in Western Yunnan Province
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该方法可以为电厂灰场库容设计提供合理的标准,从而控制由于灰水排放所造成的潜水层污染问题。
The methods can supply reasonable design standards for ash field storage to control water-pollution problems as a result of ash water discharge .
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由于土质疏松,取水为潜水层,生活和农业面源污染地质渗透所致。
The reason that groundwater quality is ineligible is soil being in loose , phreatic aquifer liable to pollution caused by life and agricultural non-point source pollution geological penetration .
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海平面不断上升,潜水层日益盐化,以及与空气污染有关的热应力只是这个区域极令人担忧的一部分后果。
Rising sea levels , increasing salinization of water tables , and heat stress in association with air pollution are just some of the consequences of great concern in this part of the world .
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根据潜水层完整井流公式,推导不同流态下势函数与水力压头的关系式,并建立各自的势函数积分表达式。
According to the formula of fully penetrating well in free-water layer , the relation between potential function and water head was derived in different states , and those integral expressions of potential function were presented .
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主要获得以下成果:(1)沙漠地下水浅埋区土壤垂直剖面分为4个区:根区、水分传输区、毛细饱和区、潜水层。
We obtained the following main achievements : ( 1 ) Soil vertical section is divided into four zones in shallow groundwater area of desert : the root zone , moisture transport zone , capillary saturation zone , phreatic water layer .
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设计试验方法,对排水性沥青混合料进行室内的模拟降雨试验,研究路面两端断面的边界条件,找出了断面上的潜水层厚度与路面坡度及降雨强度之间的关系。
We designed the experiment , and studied the boundary condition in the transect of the pavement through indoor simulating rainfall experiment to discover the relationship among the thickness of water table in the transect and the gradient of pavement and the intensity of rainfall .
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文阐述了滇西新生代盆地可地浸砂岩型铀矿的矿床特征,讨论了铀矿床的成因类型,认为属潜水顺层氧化带型铀矿床。
This paper expounds the characteristics of in-situ leachable sandstone type uranium deposits in Cenozoic basins in western Yunnan , discusses the genesis type of uranium deposits , and attributes them to phreatic interlayered oxidation zone .
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鄂尔多斯盆地古潜水氧化转层间氧化带型铀矿化前锋处于慢速成矿作用体系,成矿环境及矿体的演化呈现相对稳定的状态;
The front of the mineralization in the transitional place between the relic phreatic water oxidation zone and the interlayer oxidation zone in Ordos basin is in a slow ore-forming system , and hence the ore-forming environment and the evolution of deposits are in a relatively stable condition .
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克鲁伦盆地存在潜水氧化带型和潜水层间氧化带型两种铀矿化类型。
Two uranium mineralization types have been recognized , namely the interlayer oxidation zone type and the phreatic oxidation type .