查询词典 vadose

On the basis of laboratory and in situ tests,we analyse the depth and perviousness of vadose zone as well as aquifer and aquifuge and, furthermore,point out Penglaizhen formation with poor permeability can effectively prevent pollution of ground water from the leachate of refuse.

结合室内和野外现场试验，详细分析填埋场区的包气带、含水层、相对隔水层的厚度、透水性等水文地质条件，指出被透水性差的蓬莱镇组中段地层所围限的三面环山、中间沟谷的地质环境，能够有效地阻滞垃圾渗滤液对地下水的污染。

Combining the fluid mechanics in porous medium and the geometry, the author considers the artificial barrier as a filter cake, research on the vadose rule on the condition of the coercibility and the non-Newtonian fluid flow, establish the formula of artificial barrier pressure drop and thickness, probe the formula of the thickness of artificial barrier for the pressure in the fracture,the coercibility, the smallest stress of barrier and the rheological property of fracturing fluid.

结合渗流力学和几何学，将人工隔层视为滤饼，在对人工隔层中渗流规律的研究中考虑了流体的非牛顿性和人工隔层的可压缩性，建立隔离层压降与厚度之间的关系式，探索人工隔层厚度与缝内压力、人工隔层可压缩性、上下隔层最小主应力、压裂液流变性等之间的关系。

The field survey, sampling, testing and collection of the geological and hydrogeological data were done for the description of evolutional geological structure and sedimentation and division and definition of water-bearing system and hydrogeological age and hydro-pressure system and study of the vadose field and chemical field. By establishing the rammer numerical model, the sandy mudstone thickness recovery model, water-rock interaction particle translative simulation and hydrogeochemical simulation, and using geological statistics, analogism and complex analysis method, water circulation and water exchange of each layer in each study stage have been researched, The results show the regularity of the vadose field evolution in different stages.

本项以野外调查、采样测试和搜集的地质、水文地质大量第一性资料为依据，在论述盆地的地质构造演化、沉积演化的基础上，以含水系统、水文地质期和水压系统类型的划分和定位为研究的切入点，渗流场、化学场为研究主线，通过建立压实数学模型、砂泥岩恢复厚度数学模型、水岩作用物质成分转移的实验模拟、水文地球化学模拟、地质统计法、类比法、综合分析法等方法，模拟计算了各研究层在各研究时期水循环特点和水交替强度，揭示了各研究层渗流场在地史进程中形成演化的规律性。

The recent advances in pore network modeling in the vadose hydrology are reviewed, and the problems and the future development of this technique are also discussed.

在对其进行综合评述的基础上，指出了已有网络模型在建立过程中存在的不足之处，并进一步明确了今后的研究方向。

Thus a foundation is laid for controlling the pollutants of vadose zone and underground water.

从而为控制包气带及地下水的污染奠定了基础。

A better understand of two-phase flow is important to grasp the process of contaminant tra nsport in vadose zone.

与一相流明显不同的是，二相流考虑了空气的运动及其对水流的作用。

Vadose zone is the main channel of groundwater recharge and pollution. The nature of the vadose zone directly controls the velocity and extent of groundwater pollution.

包气带是地下水补给和地下水污染的主要通道，包气带的性质直接控制了地下水的污染化速度和程度。

In traditional study of water flow i n vadose zone, little attention is paid to the effect of air entrapment, while this effect is rather important. T here take place not only water flow, but also air flow in vadose zone.

与传统的包气带中水流研究相比，水气二相流更准确地描述了包气带中的水与空气的流动情况，这对更好地了解固体废物处置场中污染物的运动规律具有重要的意义。

The mechanism of migration and transformation for inorganic and organic pollutants in vadose zone and its research present situation at home and abroad are discussed;the mathematic model of simulated pollutants migrating and transforming rule in vadose zone and its applied qualification are explained,thus a foundation is laid for controlling the pollutants of vadose zone and underground water.

评述了包气带中无机污染物和有机污染物迁移的机理及国内外研究现状，说明了模拟污染物在包气带中迁移转化规律的数学模型及其应用条件，从而为控制包气带及地下水的污染奠定了基础。

In the two test sites, the soil water movement numerical models of vertical-one-dimension and cross section two-dimension have been established with the softwarer Vadose/W and self-programming code, of which the advantage is that it can deals with lower boundary and the upper boundary (such as meteorologic, vegetational, etc) conditions in convenience. The fitting between the model and observation data from sites indicates that the models are relatively high precision. So the models can be used to study problems such as soil evaporation, infiltration to recharge groundwater and so on under various conditions.

运用包气带水分运移软件Vadose/W和自编程序，建立了两个试验场垂向一维和剖面二维土壤水运移模型，该模型的优势在于可灵活地处理下边界和上边界条件，试验场观测数据拟合表明模型精度较高，可用于研究各种条件下土壤蒸发、土壤水分下渗补给地下水等问题。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。