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1)  filtration bed
弱滤水层
1.
Construction of the filtration bed in deep ground;
深基坑降水遇弱滤水层的施工方法
2)  aquitard
弱透水层
1.
Consolidation computation of aquitard considering non-Darcy flow;
考虑非达西流的弱透水层固结计算
2.
Study on deformation mechanics of aquitard;
弱透水层变形机理的研究
3.
On the base of the analysis of the hydrogeological data, the permeability law of the aquitard linking the upper and lower water_bearing beds in the water_bearing system has been achieved by an experimental research.
在分析水文地质条件的基础上 ,利用实验研究获得含水系统中连接上下含水层的弱透水层的渗透规律 ,然后运用数值模拟技术建立起此类含水系统中石油类污染质运移数值模拟模型 。
3)  weak aquifer
弱含水层
1.
Since the short of water resources is aggravated increasingly worldwide,it will become an important approach to exploit groundwater in weak aquifer in some special regions,which was ignored in the past.
随着水资源短缺问题的突出和弱含水层采水技术的研发,过去被忽视的弱含水层在缺水地区将成为重要的人畜饮用水水源。
2.
The dewatering calculation in weak aquifer differs from that in rich aquifer,with a far weaker permeability and,while other conditions being the same,with considerably smaller influence radius.
弱含水层的降水设计计算与富水层不同,弱含水层渗透系数远小于富水层,在其他条件相同的情况下,其影响半径也远小于富水层,故在弱含水层降水过程中出现井内动水位与基坑底面静水位相差较大的现象。
4)  weak water flooded intervals
弱水淹层段
1.
The paper introduces the characteristics and the classifying methods of logging curve in weak water flooded intervals.
通过列举弱水淹层段测井曲线的特征及划分方法,将弱水淹层段划分结果与油藏开发动态及注采关系相结合,研究油藏平面及层间层内剩余油分布,从而总结出油藏平面及层间层内剩余油分布规律。
5)  Thick weakly water-carrying stratum
厚弱含水层
6)  weak permeable stratum
弱透水地层
1.
The application of tube well dewatering in treatment of weak permeable stratum in deep excavation work;
管井降水在深基坑弱透水地层中的应用
补充资料:多层滤料滤池
分子式:
CAS号:

性质:一种下流式重力深床滤池。一般采用3种滤料,上层为无烟煤(粒径1~2mm),中层为砂(粒径0.4~0.8mm),底层为石榴石(粒径<0.5mm)。过滤速度为10m/h,反冲强度为48~72m/h。在对生物处理后的出水进行过滤时,需采取某种形式的辅助冲洗措施。

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