groundwater withdrawal

The land subsidence in China can be divided into two types: ( 1) the subsidence mainly caused by excessive groundwater withdrawal; ( 2) the subsidence caused by groundwater, oil, gas and warm groundwater withdrawal, and superposing on the neotectonic movement.

地面沉降主要有（1）由过量开采地下水引起的和（2）在新构造活动构造沉降的基础上，由开采地下水、油气、地下热水形成的地面沉降两种类型。

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Land subsidence in this area is of two characteristics: one is that the occurrence of land subsidence is closely related to groundwater withdrawal in time and space;

本区的地面沉降具有两个特点：一是在时空上与地下水开采密切相关；

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This paper analyzed the causes of groundwater withdrawal from such natural factors as precipitation, surface water and temperature, and from such human aspects as over-exploitation of groundwater, building of water conservancy, improvement of crop production and enlargement of water-consuming crops.

本文从降水、地表径流、气温等自然因素及地下水超采、水利工程修建、农作物产量水平提高、耗水型作物面积扩大等人为因素初步分析了京津以南河北平原地下水位下降的主要原因；

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An approach to the optimal schemes of groundwater withdrawal under the consideration of prevention of sea water intrusion in the Leizhou Peninsula

雷州半岛防海水入侵最优地下水开采方案探讨

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State-of-the-art of Approaches of Predicting Land Subsidence due to Groundwater Withdrawal

地下水开采引起地面沉降预测方法的现状与未来

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A discussion of methods of investigation and check of groundwater withdrawal

地下水开采量调查和校核方法探讨

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Risk analysis of groundwater allowable withdrawal evaluation

地下水允许开采量确定的风险分析

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The unascertained mathematics theory is applied to calculate the groundwater supply and evaluate the groundwater allowable withdrawal.

运用未确知数学理论对地下水资源风险分析问题进行了初步研究。

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Impact Analysis of Groundwater Withdrawal During Excavation of a Deep Foundation Pit

基坑开挖中地下水抽取对周围环境的影响分析

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In 1965, land subsidence was effectively controlled by reducing the amount of groundwater withdrawal, increasing the amount of groundwater recharge, and adjusting the layers of groundwater withdrawal.

1965年，通过大规模压缩地下水开采、开展地下水人工回灌、调整地下水开采层次等措施，有效的控制了地面沉降的发展。

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The primary improvement of the model and system development features include: ( 1) to modify groundwater source and sink subroutines for computing precipitation recharge, evapotranspiration loss and groundwater withdrawal. This modification enables the model to simulate influences of climate and pumping wells on seawater intrusion;

模型改进及系统构建包括：（1）改进SUTRA模型的降水入渗补给、潜水蒸散发消耗和机井抽水量等源汇项计算程序，使之可以有效反映气候变化及地下水开采对海水入侵的影响；

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Reliability Analysis of Numerical Simulation Results under the Condition of Groundwater Withdrawal Uncertainty

开采量不确定条件下数值模拟结果的可靠性分析

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Due to continuous economic development, rapid increase of population and accelerated urbanization, especially groundwater withdrawal, large-scale and serious surface subsidence occurs, and threatens sustainable survival and development in these cities.

但是，随着经济的持续发展、人口的急剧增加、城镇化进程的不断加快，地下水开采日益强烈，已引发大范围严重的地面沉降，对当地生存和发展环境构成极大威胁。

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Based on the definitions of hydrogeological parameter blind number and unascertained risk, a model for calculation of groundwater supply according to the blind information is established and a new method for groundwater allowable withdrawal evaluation is proposed.

在定义了水文地质参数盲数、未确知风险等基本概念的基础上，尝试性地提出了盲信息下地下水资源补给量计算模型和允许开采量的未确知风险分析方法。

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The groundwater withdrawal amount is more than 60 percent of the total water supply amount in this area.

地下水开采量占该地区供水总水量的60%以上。

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The problem of land subsidence induced by groundwater withdrawal is more and more serious.

抽取地下水引发的地面沉降问题日益严重。

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Numerical Simulation of Land Subsidence Induced by Groundwater Withdrawal by Three-Dimensional Finite Element of Water and Soil Coupling

抽汲地下水引起地面沉降的水-土耦合三维有限元数值模拟

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With the population growth and economic development, the increase of groundwater withdrawal and the emissions of pollutants, causing serious groundwater safety problems, has caused wide public concern.

伴随着人口的增长和经济的发展，人类对地下水取水量的增大以及污染物的肆意排放，引发了严重的地下水安全问题，已引起人们高度关注。

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However, due to lack of accurate statistic data, there exists uncertainty in determining groundwater withdrawal, especially groundwater withdrawal for agricultural irrigation.

但实际情况是开采量往往缺乏准确的统计数据，尤其是农业灌溉开采量，在计算中具有更大的不确定性。

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In the process of groundwater numerical simulation, groundwater withdrawal is always treated as certain sink item for long time.

地下水数值模拟过程中，人工开采量大都被当作确定项处理。

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