西安科技大学地质专业英语翻译

Aquifers are classified as unconfined. confined and leaky. An aquifer, the upper surface of Which is defined by the water table ,is called an unconfined ,water table or phreatic aquifer.

The water table is in vertical contact with the atmosphere through the soil interstices. Rest water level in a well of small diameter tapping an unconfined aquifer represents the position of the water table at the point. A confined aquifer, also known as artesian or pressure

aquifer. is one which is separated from the atmosphere by a relatively impermeable confining rock which functions as an aquifuge, aquiclude or aquitard. The water in a confined

aquifer exerts an upward hydrostatic pressure greater than the atmosphere on the overly-

ing impermeable strata. In a tightly cased well penetrating a confined aquifer, the water

level will rise above the top of the aquifer corresponding !o the hydrostatic pressure head

of the water iri the aquifer. The imaginary surface defining this pressure level of ground

water Ln the aquifer is termed the piezometric surface or piestic surface When there are

several aquifers, each aquifer has its own piezometric surface. Where the piezometric surface

lies above the ground surface. wells capping the aquifer flow naturally.

含水层被列为非承压。局限和渗漏。含水层，其中的上表面被水表中定义，被称为潜水，地下水位或潜水含水层。地下水位与通过土壤空隙大气垂直接触。在小直径的井攻潜水含水层休息水位代表地下水位在点的位置。一个承压含水层，也被称为自流或压力含水层。是其中一个是从大气通过一个相对不透水围岩石其功能是作为一个隔水层，隔水层或弱透水层分离。在承压含水层中的水施加向上的静水压力大于上过于ING不透水地层大气。在一个紧密套管井穿透承压含水层，水位将上升高于相应的含水层的顶部！Ø水IRI含水层的静水压头。确定地下水的这种压力水平LN含水层中的假想表面被称为测压表面或piestic表面如果有多个含水层，含水层的每一个都有自己的测压管表面。凡测压面在于地面上。油井封盖含水层自然流动。

An intermediate type of aquifer is the leaky aquifer or semiconfined aquifer, in which

the confining Layer is semipermeable

across semipermeable layers, depending on the differences in the pressure heads in the ma- terials above an.i below and permeability characteristics of the aquitards.

中间型含水层是漏含水层或semiconfined含水层，其中

围层是半透<弱透水层）。在一个漏水的含水层移动的地下水

横跨半渗透的层，这取决于在中压头的差异马

terials上面下面an.i和弱透水层的渗透特性。

Each artesian aquifer has a recharge or intake area, a conduit or transitional area , and

fl discharge area. The discharge area may correspond io an area of upward leakage of water

or downslope outcrop of the artesian aquifer. The distribution of hydrostatic head in an artesian aquifer is controlled by the difference between the elevations ai which confinement

of water begins in the recharge area and the discharge area. local variations in the distribution

of bead may OCL-ur due to several factors like geological structure, lithological characteristics .overburden pressure, recharge and discharge.

每个承压含水层有一个充电或进气面积，管道或过渡区域，

FL放电区域。放电区域可以对应io的向上渗漏的水的区域

或承压含水层的下坡露头。静水压头在一个分布

承压含水层是由区别的艾高程控制之间的隔离

水开始在补给区和排出区。在分布的局部变化