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由于对海河流域平原区地下水资源缺乏有效的管理,致使其严重超采,进而产生了一系列地质灾害,制约着经济社会的可持续发展.通过分析区域水文地质条件、含水层空间分布规律、水文地质参数、地下水流场、地下水观测资料等,概化研究区地质体,进而建立地下水模型,同时率定模型和标定大型漏斗.该模型首次全面认知和模拟了研究区地下水超采起始时间、超采量、漏斗发展过程,并预测了发展趋势. 相似文献
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GMS软件中MF2K PES Process和PEST模块都是参数估算程序,两模块在参数运算过程中交替调用、反复迭代,得到最优的参数值。对于精度要求高、水文地质条件复杂的地下水流模型,GMS反求参数模块的适用性需进行有效验证。以地下含水岩层的非均质性为唯一变量,采用高斯模拟法生成非均质程度不同的渗透系数场,建立给定水文地质参数的理想地下水流模型,进行模型识别,得到等效渗透系数。分析可得,GMS软件反求参数模块的计算精度与水文地质条件有一定的相关性,均质含水层参数估算结果与给定值基本吻合。而含水层非均质性越弱,估算结果精度越高,误差越小,反之计算结果误差越大,为水文地质参数的计算提供借鉴及依据。 相似文献
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根据区域水文地质特征将地下水类型划分为潜水和承压水,概化含水层结构为包气带层、潜水含水层、弱透水层和承压含水层。综合利用钻孔、遥感影像、地质地貌、数字高程数据等资料,利用Visual MODFLOW软件中空间三维、非均质、各向异性的非稳定地下水流系统模型实现三维可视化。结果表明,该模型构建方法能够较为准确地刻画地层结构和水文地质特征,实现三维地质体的精准模拟,为进一步开展地下水数值模拟和溶质运移工作提供支撑。 相似文献
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母猪河地下水库位于威海市文登区母猪河流域,库区为一个独立的水文地质单元,有一定的含水层厚度,有较丰富的潜流,地层富水性和透水性强。该文根据补给水源条件、水文地质条件、环境地质条件、地下水开采条件论述母猪河地下水库建库可行性,通过"一截一蓄",兴建地表橡胶坝及地下截渗墙等工程体系,人为干预地下水流的天然调蓄能力,扩大地下含水层蓄水能力,可增加当地雨洪资源利用量。 相似文献
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Conjunctive Management of Large-Scale Pressurized Water Distribution and Groundwater Systems in Semi-Arid Area with Parallel Genetic Algorithm 总被引:2,自引:2,他引:0
Frank T.-C. Tsai Vineet Katiyar Doug Toy Robert A. Goff 《Water Resources Management》2009,23(8):1497-1517
This study develops a production well management model for the conjunctive management of water resources in semi-arid areas.
The management model integrates a large-scale pressurized water distribution system and a three-dimensional groundwater model
under an optimization framework. The well pump operations optimization problem is formulated as a Boolean integer nonlinear
programming (BINLP) problem to optimize the periodic 24-h pump on/off operations over a 1-week operation horizon. The management
model considers multiple objectives and is solved by a parallel genetic algorithm (PGA) to overcome the difficulty of solving
the BINLP problem. The PGA significantly reduces computation time for a case study in Chandler, Arizona. The Chandler water
distribution model is built based on EPANET, and the Chandler three-dimension groundwater model is developed using MODFLOW.
The high performance computing (HPC) of the genetic algorithm makes it possible to obtain 24-h real-time operations in the
7-day forecast model. The tank reliability, resilience, and vulnerability (R-R-V) are evaluated to infer the system reliability.
The Pareto curve provides compromise solutions between the two competing objectives of energy reduction and pressure violation
reduction. 相似文献
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The three-dimensional groundwater flow model MODFLOW and the one-dimensional consolidation model are coupled and calibrated to simulate the piezometric levels and land subsidence in the complex multi-aquifer system of the lower Central Plain of Thailand. The mathematical models are calibrated against historical data for the period 1955–1990 by considerably updating the system conditions used by previous studies. The aquifer system responses to different pumping schemes are then predicted for the period 1991–2010. The modeling procedure is carried out in close consultation with the Department of Mineral Resources (DMR), Royal Thai Government. The conclusions of the study will allow the DMR to develop and implement updated groundwater management policies, land subsidence control strategies and action programs in the Bangkok Metropolitan Area. 相似文献
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Groundwater Allocation Using a Groundwater Level Response Management Method—Gnangara Groundwater System, Western Australia 总被引:5,自引:3,他引:2
The Gnangara groundwater system (Gnangara system) is an important source of groundwater for Perth, Western Australia: in the
order of 350 GL of groundwater is abstracted annually. The Gnangara system also sustains groundwater dependent ecosystems
(GDEs), mostly wetlands and native vegetation. Declining groundwater levels across the system have led to impacts on a number
of key GDEs. Western Australia’s Department of Water recently prepared a Water Management Plan for the Gnangara system. Allocation
limits were reviewed as part of the plan preparation. To assist in reviewing allocation limits, an adaptive Groundwater Level
Response Management (GWLRM) methodology was developed and implemented. This paper describes the methodology and its application
to the Gnangara system. The methodology was developed to be used as a corrective tool for the short- and medium-term, to assist
in achieving long-term sustainability of groundwater management in the context of changing climate and declining groundwater
levels. The GWLRM methodology is based on groundwater storage depletion and can be applied to existing allocation limits as
an interim tool to assist in making management decisions aimed at recovering groundwater resources. The key to the GWRLM correction
is that it will direct water allocation towards sustainable levels on the basis of measured trends. Allocations corrected
through application of the GWRLM would therefore represent interim and improved water allocation figures. GWLRM can also identify
potential problem areas where the principles or calculations used for long-term sustainable groundwater allocation would need
to be reviewed. For the Gnangara system, the calculated storage changes or GWLRM corrections were considered together with
results of predictive modelling as part of an expert panel process to derive a more sustainable interim groundwater allocation
regime while further research is being completed. 相似文献
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五常镇以农耕为主,为稻米之乡。五常镇70km2范围内区域的水文地质条件,受区域第四纪地质、地貌、水文和气象等因素的控制,形成了区域地下水系统的基本格局。研究地下水水文地质条件,包括地下水的赋存条件、补径排条件、类型和动态规律等,从而得出移动规律,为地下水量的计算提供基础资料,为五常镇地下水资源的评价提供水文地质依据。 相似文献
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Groundwater management and development by integrated remote sensing and geographic information systems: prospects and constraints 总被引:15,自引:3,他引:12
Madan K. Jha Alivia Chowdhury V. M. Chowdary Stefan Peiffer 《Water Resources Management》2007,21(2):427-467
Groundwater is one of the most valuable natural resources, which supports human health, economic development and ecological
diversity. Overexploitation and unabated pollution of this vital resource is threatening our ecosystems and even the life
of future generations. With the advent of powerful personal computers and the advances in space technology, efficient techniques
for land and water management have evolved of which RS (remote sensing) and GIS (geographic information system) are of great
significance. These techniques have fundamentally changed our thoughts and ways to manage natural resources in general and
water resources in particular. The main intent of the present paper is to highlight RS and GIS technologies and to present
a comprehensive review on their applications to groundwater hydrology. A detailed survey of literature revealed six major
areas of RS and GIS applications in groundwater hydrology: (i) exploration and assessment of groundwater resources, (ii) selection
of artificial recharge sites, (iii) GIS-based subsurface flow and pollution modeling, (iv) groundwater-pollution hazard assessment
and protection planning, (v) estimation of natural recharge distribution, and (vi) hydrogeologic data analysis and process
monitoring. Although the use of these techniques in groundwater studies has rapidly increased since early nineties, the success
rate is very limited and most applications are still in their infancy. Based on this review, salient areas in need of further
research and development are discussed, together with the constraints for RS and GIS applications in developing nations. More
and more RS- and GIS-based groundwater studies are recommended to be carried out in conjunction with field investigations
to effectively exploit the expanding potential of RS and GIS technologies, which will perfect and standardize current applications
as well as evolve new approaches and applications. It is concluded that both the RS and GIS technologies have great potential
to revolutionize the monitoring and management of vital groundwater resources in the future, though some challenges are daunting
before hydrogeologists/hydrologists. 相似文献
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We developed an integrated biophysical and economic modeling framework to assess impact of various groundwater management
options on seawater intrusion and waterlogging and ultimate impact on sugarcane profitability in a coastal region of North
Queensland, Australia. The modelling framework used the output of a groundwater management flow model (waterlogged and seawater
intruded areas) and a crop simulation model (simulated crop yield) and maximised the net revenue in a mathematical programming
(optimisation) model. The framework determined the economically optimal level of water use on different soil types and in
different management regimes and estimated impact of seawater intrusion and waterlogging on net revenue of growing sugarcane
in two neighbouring water board areas (North Burdekin Water Board – NBWB and South Burdekin Water Board – SBWB). In NBWB,
the predicted aggregate net revenue was highest ($19.95 million) when groundwater use was also highest (70%) while predicted
aggregate net revenue was lowest when groundwater use was also lowest. In SBWB, the predicted aggregate net revenue was highest
($23 million) when groundwater use was relatively low (61%). The predicted aggregate net revenues of all the management options
were higher in SBWB than NBWB. 相似文献
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Fakhri Manghi Behrooz Mortazavi Christie Crother Moshrik R. Hamdi 《Water Resources Management》2009,23(12):2475-2489
Estimating groundwater recharge is a key component in determining the sustainable yield of groundwater resources in arid and
semi-arid areas such as southern California. Estimating groundwater recharge on a regional scale requires developing a water
budget that incorporates data on boundary conditions, aquifer properties, groundwater levels, and groundwater production.
The hydrological budget method proposed herein is simple, cost-effective, and easy to apply. It utilizes matched pairs of
groundwater level measurements, groundwater extraction data, and distributed specific yield information for estimating groundwater
recharge. In this method, ARCGIS 9.0 Geostatistical and Spatial Analyst applications are used for interpolating/extrapolating
and creating grids for specific yield, bedrock elevation, and raw groundwater data. The annual average groundwater recharge
for the Hemet subbasin in western Riverside County, California, from 1997 to 2005 is estimated at 12.5 MCM, with wet and dry
periods ranging between 14.9 MCM and 11.7 MCM, respectively. The proposed method utilizes information commonly available to
most groundwater management entities, such as groundwater production data, groundwater level measurements, and lithologic
information. 相似文献
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Groundwater level is an effective parameter in the determination of accuracy in groundwater modeling. Thus, application of simple tools to predict future groundwater levels and fill-in gaps in data sets are important issues in groundwater hydrology. Prediction and simulation are two approaches that use previous and previous-current data sets to complete time series. Artificial intelligence is a computing method that is capable to predict and simulate different system states without using complex relations. This paper investigates the capability of an adaptive neural fuzzy inference system (ANFIS) and genetic programming (GP) as two artificial intelligence tools to predict and simulate groundwater levels in three observation wells in the Karaj plain of Iran. Precipitation and evaporation from a surface water body and water levels in observation wells penetrating an aquifer system are used to fill-in gaps in data sets and estimate monthly groundwater level series. Results show that GP decreases the average value of root mean squared error (RMSE) as the error criterion for the observation wells in the training and testing data sets 8.35 and 11.33 percent, respectively, compared to the average of RMSE by ANFIS in prediction. Similarly, the average value of RMSE for different observation wells used in simulation improves the accuracy of prediction 9.89 and 8.40 percent in the training and testing data sets, respectively. These results indicate that the proposed prediction and simulation approach, based on GP, is an effective tool in determining groundwater levels. 相似文献
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GIS-Based Groundwater Management Model for Western Nile Delta 总被引:7,自引:3,他引:4
The limited availability of renewable fresh water is a major constraint on future agriculture and urban development in Egypt.
The main water resource that Egypt has been depending on is the River Nile. Nowadays, the role of groundwater is steadily
increasing and will cover 20% of the total water supply in the coming decades especially in the reclaimed areas along the
desert fringes of the Nile Delta and Valley. Abstraction from groundwater in Egypt is dynamic in nature as it grows rapidly
with the expansion of irrigation activities, industrialization, and urbanization. One of these areas is the Western Nile Delta
in which the groundwater is exploited in many localities. To avoid the deterioration of the aquifer system in this area, an
efficient integrated and sustainable management plan for groundwater resources is needed. Efficient integrated and sustainable
management of water resources relies on a comprehensive database that represents the characteristics of the aquifer system
and modeling tools to achieve the impacts of decision alternatives.
In this paper, a GIS-based model has been developed for the aquifer system of the Western Nile Delta. The GIS provides the
utilization of analytical tools and visualization capabilities for pre-and post-processing information involved in groundwater
modeling for the study area. The developed model was calibrated for steady state and transient conditions against the historical
groundwater heads observed during the last 20 yr. The calibrated model was used to evaluate groundwater potentiality and to
test two alternative management scenarios for conserving the aquifer system in Western Nile Delta. In the first scenario,
reducing the surface water inflow while increasing the annual abstraction from groundwater by about 450 million m3 and improving the irrigation system could increase the net aquifer recharge by about 5.7% and reduce the aquifer potentiality
by about 91%. Constructing a new canal as a second management scenario could increase the annual aquifer potentiality by about
23%. The GIS-based model has been proven to be an efficient tool for formulating integrated and sustainable management plan. 相似文献