underground surface below which the ground is wholly saturated with water;

"spring rains had raised the water table"

As the exploitation level extends down and the drainage increases in karst mine, the groundwater level descends continuously.

随着巖溶矿山开拓面的不断延深和排水量的不断增大，地下水位将持续下降。

Finally, the relationship between Tangshan groundwater level anomalies in epicentral area and focal evolution process is discussed.

文末，用唐山震中区地下水位异常资料，讨论了与震源演化过程的关系。

This paper takes as its target at exploring the regularities of the seawater wedge encroachment and attacking influence on the coastal line groundwater level change through laboratory experiments.

为掌握滨海地带无压含水层中的海水楔因地下水位升降及抽水引起的移动规律，采用室内实验的方法，考察了海水楔在不同的水面坡度和抽水位置下的移动特性。

A model showing dynamic change of groundwater level for Shenyang area is set up, using the method of multivariate linear regression in random model.

作者应用随机模型中多元线性回归的方法建立了沈阳地区地下水位动态变化模型。

In many cases of regional water resources issues, when numerical method is often adopted in groundwater flow modeling, groundwater level on each node should be given.

对于许多区域水资源问题，用数值方法进行地下水水流模拟时，需要给出每个节点上地下水位值。

This paper mainly analyses environmental geological problems such as descend funnel land subsidence. Water quality deterioration produced by groundwater level change.

本文主要分析了地下水水位变化引起的降落漏斗及地面沉降、水质恶化等环境地质问题。

The suitable depth of groundwater level was presented for different kinds of soil, which can serve as the reference and standard for...

提出不同土壤类型地下水适宜埋深，为黄淮平原节水灌溉和排水标準提供依据。

The dynamic variations of groundwater level are subject to cyclic variation of precipitations.

当地降水量的多年周期性变化决定了地下水位的多年动态。

The physical model tests were performed to study the influence of pipe drainage system on soil permeability, groundwater level and slope residual downslide thrust.

为了研究管网渗流系统对土体渗透性能和地下水位以及边坡剩余下滑推力的影响，进行管网渗流系统的物理模拟试验。

According to results of calculating parameters and groundwater level fitting, a conclusion which complex method is very effective for multi parameter inverse problem is given.

根据求参结果及水位拟合情况，特别指出当反演参数的个数较多时，复形法的实用性就显得更为突出。

We have studied the groundwater level anomaly before the Datong Yanggao earthquake by using the fuzzy mathematical method.

采用模糊数学从属函数和异常系列方法，以大同-阳高地震为例，对强震发生的时间与地点预测进行研究。

In the paper, a BP network in which the factors to effect groundwater levels are set as input neurons and the groundwater level is set as output neuron, was established to forecast groundwater level.

本文把影响地下水位的因素集作为网络的输入向量，地下水位本身作为网络的输出向量，构成了预测地下水位的BP网络模型。

Pipe drainage of groundwater are often developed in the pebbly clay slopes and are important in restricting groundwater level rising and in keeping slope stability.

含碎块石土质边坡中常发育有地下水排泄管道，他们控制地下水水位上升，对保持边坡稳定十分重要。

The layer structure and the change of groundwater level are the major factors to influence the ground subsidence.

地层结构和地下水位变化是影响地面沉降的主要因素。

The paper studies the changing characteristics of groundwater level and water quality of bedrock fissure water exploitation areas in urban district of Changchun City.

论文阐述了长春市城区基巖裂隙水开采区地下水位、水质状态的变化特征。

A regional groundwater level monitoring network was optimally designed for the Jinan Karstic Spring Basin. The network density was optimized by delineating groundwater regime zone map.

文章采用编制济南巖溶泉域地下水动态类型图的方法优化设计了地下水水位监测密度。

It is pointed out that the water for construction is the main factor leading to the groundwater level rise.

文章指出施工用水是两岸地下水位抬升的重要原因。

By use of the remote data communication technique and the current telephone network system, a network system for automatic monitoring of groundwater level is developed.

采用远程数据通讯技术，利用现有的电话通讯网络，研制了地下水水位自动监测网络系统。

The lab test results show that the sustainable exploitation groundwater level can be determined by the deformation characteristics of the compressive curves.

根据室内压缩曲线变形规律可以确定深层地下水的可持续开采水位降。

Due to the larger volume of storage and regulation in karstic water fi eld, the time-autocorrelation of groundwater level is outstanding.

在裂隙巖溶水水源地，由于地下水系统的存储与调蓄作用，地下水水位时间上的自相关性显着。

The change of groundwater level dynamics is a complicate hydrological process. It is important to predict exactly the change of groundwater level in exploiting water resources.

地下水位动态变化是一个复杂的水文过程，準确地预测地下水位变化情况在水资源开发利用中有着重要意义。