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- The vadose zone according to Meinzer has three divisions. 按迈因第尔的材料,包气带分成三个部分。
- Vadose zone is below weathering crust face and on water table. 潜流岩溶带的上限是枯水期的最低潜水面,该带地下水受压力梯度控制并沿水平方向流动,最明显的岩溶特征是出现大型的水平溶洞,地下暗河及其溶蚀孔、洞、缝发育段。
- 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。
- Sand-sandrock vadose zone structure spreads widely in the North of the Erods Basin. 摘要风积沙覆基岩型包气带结构在鄂尔多斯盆地北部分布面积最广。
- Subsurface Flow is the flow of water underground, in the vadose zone and aquifers. 地下水流是水于地下蓄水层或地下水位线以上的空间流动。
- Carbon fiber having the character of high aspect ratio and low density reaches to the vadose zone in lower content. 研究结果表明:钢纤维长径比小,密度大,和粒子状的碳黑一样,在很高掺量仍处于未渗流区,两种水泥石的力电耦合效应都不明显。
- The key to modeling the vadose zone is the ability to predict an accurate surface boundary condition. 计算边界面上的流量:对渗流区域进行建模分析的关键问题是预测准确的面边界条件。
- Finally that parameter changes of vadose zone causes the disadvantage influences to local environment are discussed. 最后讨论了包气带水分参数的变化对当地环境造成的不利影响。
- These results have significant meaning in assessing groundwater and protecting the vadose zone structure for regional eco-environmental protection. 在进行盆地北部地下水资源评价及开发方案制定过程中,应对风积沙覆基岩型包气带的生态意义给予重视。
- Transport of organic chemicals in soil vadose zone was simulated by using a coupling model of solute transport and water flow. 采用溶质传递方程和水流动方程联立耦合进行数值求解,模拟土壤渗流区中有机污染物的垂直一维迁移过程。
- Vadose zone forms fracture-vug reservoirs or fracture reservoirs, there are isolated big dissolution cave once in a while. 潜流岩溶带常形成良好的孔洞型或洞穴型储层。
- Residual saturation of NAPLs in vadose zone is an important parameter in modeling the migration of NAPLS and selecting remediation technology. 包气带中非混溶液体的残余饱和度是模拟其迁移及选择治理方案的一个重要参数。
- It means that the property of landfill leachate influences the organic matter content in the vadose zone;furthermore silt would more likely exaggerate the effects more than clay. 即渗滤液性质对包气带介质中有机物含量具有方向性的影响作用,而包气带介质亚粘土比细砂更容易放大这种作用效果。
- The main factors of the DRTA model are: (1) depth to water table, (2) rating media of the vadose zone, (3) thickness of rating media in the vadose zone and (4) aquifer thickness. DRTA模型包含有地下水埋深、包气带评分介质、包气带评分介质的厚度和含水层厚度4个因子;
- ZHENG Xi-lai, JING jing, XI Lin-ping.Study on the migration and degradation of crude oil in vadose zone[J].Hydrogeology and Engineering Geology, 1998,(1) :35 - 37. [1]郑西来;荆静;席临萍.;包气带中原油的迁移和降解研究[J]
- On the basis of its feature and moisture content, this paper analyzed the relationship between its influencing factors, vadose zone thickness and groundwater table. 在其结构及其属性特征分析基础上,重点解析了结构内垂向上土壤水分的富集规律;以沙蒿为例,对喜沙耐旱植被的生长与风积沙厚度、地下水水位埋深间的关系进行了探讨。
- The paper introduces seven factor of DRASTIC model: Depth of water table、Net recharge、Aquifer media、Soil media、Topography、Impact of Vadose Zone and Hydraulic Conductivity. 介绍了DRASTIC模型的七个评价因子:地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质I的影响和含水层的导水系数。
- The result indicates that the electrical imaging time-lapse surveys have high accuracy about the flow of water through the vadose zone,changes in the water table due to ... 结果表明高密度电阻率法延时性勘探对于解决未饱和区域水的流动、水位的变化、化学污染物的扩张和堤坝的渗漏等具有较高的准确性。
- The retardance of organic contaminants in acetigenic and methanogenic lanfill leachate by different vadose zone lithology was studied in laboratory columns. 摘要从渗滤液场龄和包气带岩性两方面着手,研究了不同岩性包气带介质对不同场龄渗滤液中有机污染物的截留作用规律。
- Hypergenesis palaeokarst usually manifests distinct vertical zoning rule which divides into epikarst zone, vadose zone and phreatic zone. 表层岩溶带位于风化壳表层上部,风化淋滤及地表径流改造而破碎,短距离搬运堆积于地势相对较低洼的风化壳表面,形成一些溶沟、溶洞、溶缝、溶蚀洼地、溶蚀漏斗及落水洞等,其充填物主要为地表残积物和洞壁塌积物。