查询词典 water table

Jianghan plain, located in the middle-south of Hubei province. Its ground water resources degree of development and utilization are high. The primary exploitation layers are the upside pore confined aquifer and the underpart cranny and pore confined aquifer. With the rapidly development of urbanization and economic,the water consumption is increasing.That have coused the local ground water table decent.In someplace,the excessive exploitation have induced the groundwater table fall and collapse.

江汉平原位于湖北省中南部，其地下水资源开发利用程度较高，主要开采的为上部[Q_(2+3)]孔隙承压含水层和下部[Q_1+N]裂隙孔隙承压含水层中的水，随着区内城市化建设和经济的迅速发展，用水量增加，区域地下水位已有一定幅度的下降，局部地区因过量开采已形成地下水降落漏斗和地面塌陷等现象。

Water Table - The water table is the walk-around at the top of standard derricks which supports the crown block.

天车台：天车台是围绕在标准井架顶部的平台，用于支承天车。

Due to the surface ecological environment is controlled by the water table, so to protect the water table from obvious decline is a core task for the water-conserving mining in the fragile ecological mine area.

表生生态环境严格受控于地下水位，采煤过程中，控制地下水位不发生明显下降是陕北生态脆弱矿区保水开采的核心。

Beach groundwater table fluctuates with tidal oscillations in coastal unconfined aquifer. The period-averaged water table height is higher than the steady-state water table with the neglect of tidal effects. That is, there exists an overheight between the two.

潮汐海平面上下波动带动毗邻的滨海地下水水位振动，对达到动态稳定后的地下水水位作周期平均后，其位置高出不考虑潮汐作用的稳态水位，即潮汐影响下滨海地下水水位存在超高。

Examination of the equilibrium status of a point in the salt water zone and the description of piezometric heads at two points in both the salt water and fresh water zones reveals that the location of the fresh water-salt water interface in a coastal homogeneous, isotropic unconfined aquifer can be estimated based on piezometric heads at two points in the same vertical line tapping respectively the salt water zone and the fresh water zone (from the water table to the interface) when the groundwater flow system is in a steady state and satisfies the Dupuit assumption.

通过考察咸淡水界面之下咸水带任意点的压力平衡关系和咸水带及淡水带任意点的水头描述得知，当地下水流处于稳定状态且满足Dupuit假设时，可以根据同一垂直线上界面之下咸水带任意点的咸水测压水头和界面之上淡水带任意点的淡水测压水头确定滨海均质各向同性潜水含水层咸淡水界面的位置。

The subsoil must be highly permeable, but it must have a shallow water table or be underlain by an impermeable layer that permits a perched water table to be maintained.

地面一定要相当平整，并且具有小于0.5％的坡度；底土必须是强透水土壤，但是它必须有一个较高的地下水位或在下面铺一个不透水层，以能维持一个较高的地下水位。

Figure 1.3 illustrates a case where leakage from a pond causes mounding of the natural water table. SEEP/W allows you to model the water table mounding and answer questions such as determining the impact that clay liners can have on the mounding.

图3 表示从一个水池渗透导致渗漏引起自然地下水位的升高的事例，SEEP/W允许你模拟水位升高，并且回答了比如确定岩层水位升高的影响。

According to the selected BP model and related water table depth records and other information, the annual and monthly mean water table depth trends in the future planning year (2005, 2010) are forecasted on condition that water saving reconstruction projects are accomplished in the larger scale experimental zone of Hetao Irrigation district.

在此基础上根据黄河河套灌区多年的水文、气象和地下水信息，对一个大尺度区域的多年年均地下水埋深变化进行了BP模型的模拟与检验，预测了灌区节水工程实施后未来规划水平年(2005，2010年)年平均、月平均地下水位下降的动态。并进行了RBF模型与区域水均衡法的检验与对比，进一步验证了预测结果的可靠性。

To control the ground-water table on irrigated lands is vitally important in arid and semi-arid regions. In order to determine the standard of water table control, considerable attentions were paid to the "critical depth"(or "safe depth") of ground-water table. The salts accumulate in the top soil if the water table is not deeper than this depth. The conditions that the salts accumulate in any layer of the soil owing to the movement of soil moisture are:(1) the supplement of soil moisture from neighboring...

本文分析了地下水补給情况下土壤水分的形态和不同形态的水分在土壤中运行和蒸发的一些特点，论証了毛管水联系破裂含水率等土壤水分形态指标与土壤水分运动和土壤积盐状况的关系，探討了次生盐碱化发生的地下水临界条件，提出了地下水临界深度的确定方法，并且对現有的临界深度的确定方法进行了討论与比較。

From the water pressure test and the collapsing examples, the thesis analysis the force expression of Karst collapse in water table dropping down, and presents that the additional stress from water table descending in overlying soil layer and rock, which is equal to approximately the descending depth of water table, which can be applied to about ten meters descending depth.

针对地下水位波动引发的岩溶塌陷进行了专门性研究。通过试验文章指出了岩溶区地下水位受迫下降至基岩面以下时的力学效应为：附加力在一定范围内，与在基岩面以上一样，等于水位下降的幅度值，并与盖层下基岩中洞穴的形态及体积无关。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。