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Groundwater Flow Simulation and its Application in Groundwater Resource Evaluation in the North China Plain,China

Acta Geologica Sinica(English Edition) 2013年第1期87卷 243-253页

作者： SHAO Jingli LI Ling cui yali ZHANG Zhaoji School of Water Resources and Environment China University of Geosciences The Institute of Hydrogeology and Environmental Geology CAGS

The purpose of this study is to establish a 3D groundwater flow modelling for evaluating groundwater resources of the North China Plain. First, the North China Plain was divided into three aquifers vertically through a characterization of hydrogeological conditions. Groundwater model software GMS was used for modeling to divide the area of simulation into a regular network of 164 rows and 148 lines. This model was verified through fitting of the observed and the simulated groundwater flow fields at deep and shallow layers and comparison between the observed and simulated hydrographs at 64 typical observation wells. Furthermore, water budget analysis was also performed during the simulation period （2002-2003）. Results of the established groundwater flow model showed that the average annual groundwater recharge of the North China Plain during 1991 to 2003 was 256.68x10s m3/yr with safe yield of groundwater resources up to 213.49x10s m3/yr, in which safe yield of shallow groundwater and that of deep groundwater was up to 191.65x10s m3/yr and 22.64x10s m~/yr respectively. Finally, this model was integrated with proposal for groundwater withdrawal in the study area after commencement of water supply by South-North Water Transfer Project, aiming to predict the changing trend of groundwater regime. As indicated by prediction results, South-North Water Transfer Project, which is favorable for effective control of expansion and intensification of existing depression cone, would play a positive role in alleviation of short supply of groundwater in the North China Plain as well as maintenance and protection of groundwater.

关键词： groundwater model groundwater recharge safe yield South-North Water TransferProject North China Plain

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Applicability of Artificial Recharge of Groundwater in the Yongding River Alluvial Fan in Beijing through Numerical Simulation

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Journal of Earth Science 2014年第3期25卷 575-586页

作者： Qichen Hao Jingli Shao yali cui Zhenhua Xie School of Water Resources and Environment China University of Geosciences Beijing Institute of Hydrogeology and Engineering Geology

A groundwater transient flow model was developed to evaluate the applicability and effectiveness of artificial recharge scenarios in the middle-upper part of the Yongding River alluvial fan in Beijing. These scenarios were designed by taking into account different types of recharge facilities and their infiltration rate with the Middle Route Project for South-to-North Water Transfer（MRP） as the recharge water source. The simulation results suggest that：（1） the maximum amount of artificial recharge water, for scenario I, would be 127.42×106 m3 with surface infiltration facilities; and would be243.48×106 m3 for scenario II with surface infiltration and recharge wells under the constraint of the upper limit of groundwater;（2） with preferred pattern of recharge facilities, groundwater levels in both optimized recharge scenarios would not exceed the upper limit within the given recharge period; and（3implementation of the recharge scenarios would efficiently increase the aquifer replenishment and the groundwater budget will change from-54.11×106 to 70.89×104 and 183.36×104 m3, respectively. In addition, under these two scenarios groundwater level would rise up to 30 and 34 m, respectively, without increasing the amount of evaporation. The simulation results indicate that the proposed recharge scenarios are practically feasible, and artificial recharge can also contribute to an efficient recovery of groundwater storage in Beijing.

关键词： groundwater modeling artificial recharge infiltration rate groundwater management.

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Design of an Index System for Deep Groundwater Management Efficiency Evaluation: A Case Study in Tianjin City, China

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Chinese Geographical Science 2016年第3期26卷 325-338页

作者： NAN Tian SHAO Jingli CAO Xiaoyuan ZHANG Qiulan cui yali School of Water Resources and Environment China University of Geosciences (Beijing) Department of Earth Ocean & Atmospheric Science Florida State University

An effective evaluation system can provide specific and practical suggestions to the deep groundwater management. But such kind of evaluation system has not been proposed in China. In this study, an evaluation index system is specifically developed to evaluate deep groundwater management efficiency. It is composed of three first-level indicators(law enforcement capability, management ability, and management effectiveness) and eleven second-level indicators. The second-level indicators include seven mandatory indicators and four optional indicators. Piecewise linear function is used to normalize the quantitative indicators, and expert scoring method and questionnaire survey method are used to normalize the qualitative indicators. Then a comprehensive indicator weighting evaluation method is used to evaluate the first-level indicators and the target topic. A case study is carried out to evaluate deep groundwater management efficiency in Tianjin City. According to the evaluation score in each period, the management efficiency of every district in Tianjin City gradually improved. The overall evaluation score in the early deep groundwater extraction period is 0.12. After a series of deep groundwater protection efforts, this score reached to 0.61 in 2007, and met the regulation criteria. The evaluation results also showed that the further groundwater management efforts in Tianjin City should be focused on building a dynamic database to collect comprehensive deep well-log data; and on a reasonable design and distribution of the groundwater monitoring network. It demonstrated that the index system is suitable to locate the deficiencies of current groundwater management systems and to guide further improvements. It can then be used to protect deep groundwater.

关键词： deep groundwater management evaluation index system law enforcement capability management ability management effectiveness

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Development and Application of a Regional Land Subsidence Model for the Plain of Tianjin

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Journal of Earth Science 2014年第3期25卷 550-562页

作者： yali cui Chen Su Jingli Shao Yabin Wang Xiaoyuan Cao School of Water Resources and Environment China University of Geosciences Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences Tianjin Institute of Geological Survey

In this paper, a coupled numerical groundwater and land subsidence model was developed for the Tianjin Plain. The model was employed to investigate the groundwater resources and their changes over the last decade, and to further predict the changing patterns of the groundwater level and associated land subsidence in future. First, according to the regional hydrogeology, the simulation area was defined with an area of 10.6×103 km2, which was divided into six aquifer units. A coupled groundwater and land subsidence numerical model was built by using Modflow2005 and the land subsidence simulation module SUB（subsidence and aquifer-system compaction）, in which the groundwater flow was modeled as three-dimensional unsteady flow and the land subsidence simulation was based on one-dimensional consolidation theory. The model was then calibrated by using the groundwater level contour lines, hydrographs, and land subsidence hydrographs over the period of 1998–2008. In addition, groundwater balance analysis of the simulation period indicated that under multi-year groundwater withdrawal condition the cross-flow recharge, compression release, and lateral boundary inflow contributed 44.43%, 32.14%, and 21.88% to the deep aquifer recharge, respectively. Finally, the model was applied to predict the changing patterns of the groundwater levels and the associated variations in land subsidence under the control of groundwater exploitation after implementation of the south-to-north water diversion project. The simulation results demonstrated that the groundwater level may gradually increase year by year with an decrease in the groundwater withdrawal; and the land in dominated land subsidence regions including the urban area, Dagang, Hangu, Jinghai, Wuqing, and Jinnan, may rebound at an average rate of 2–3 mm/a, and the land subsidence rate in the other regions may decrease.

关键词： groundwater land subsidence simulation modflow SUB the south-to-north water diversion.

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Study on the Estimation of Groundwater Withdrawals Based on Groundwater Flow Modeling and Its Application in the North China Plain

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Journal of Earth Science 2014年第6期25卷 1033-1042页

作者： Jingli Shao yali cui Qichen Hao Zhong Han Tangpei Cheng School of Water Resources and Environment China University of Geosciences Institute of Applied Physics and Computational Mathematics CAEP Software Center for High Performance Numerical Simulation

The amount of water withdrawn by wells is one of the quantitative variables that can be applied to estimate groundwater resources and further evaluate the human influence on groundwater systems. The accuracy for the calculation of the amount of water withdrawal significantly influences the regional groundwater resource evaluation and management. However, the decentralized groundwater pumping, inefficient management, measurement errors and uncertainties have resulted in considerable errors in the groundwater withdrawal estimation. In this study, to improve the estimation of the groundwater withdrawal, an innovative approach was proposed using an inversion method based on a regional groundwater flow numerical model, and this method was then applied in the North China Plain. The principle of the method was matching the simulated water levels with the observation ones by adjusting the amount of groundwater withdrawal. In addition, uncertainty analysis of hydraulic conductivity and specific yield for the estimation of the groundwater withdrawal was conducted. By using the proposed inversion method, the estimated annual average groundwater withdrawal was approximately 24.92×10^9 m^3 in the North China Plain from 2002 to 2008. The inversion method also significantly improved the simulation results for both hydrograph and the flow field. Results of the uncertainty analysis showed that the hydraulic conductivity was more sensitive to the inversion results than the specific yield.

关键词： inversion method North China Plain groundwater withdrawal numerical modeling

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Fe3O4/Au composite nano-particles and their optical properties

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Science China Chemistry 2005年第4期48卷 273-278页

作者： cui yali HUI Wenli SU Jing WANG Yani CHEN Chao Biochip Research and Development Center Northwest UniversityNational Engineering Research Center for Miniaturized Detection SystemXi'an 710069China Biochip Research and Development CenterNorthwest UniversityNational Engineering Research Center for Miniaturized Detection SystemXi'an 710069China Biochip Research and Development CenterNorthwest UniversityNational Engineering Research Center for Miniaturized Detection SystemXi'an 710069China Biochip Research and Development CenterNorthwest UniversityNational Engineering Research Center for Miniaturized Detection SystemXi'an 710069China Biochip Research and Development CenterNorthwest UniversityNational Engineering Research Center for Miniaturized Detection SystemXi'an 710069China

Fe3O4/Au composite particles with core/shell structure were prepared by reduction of Au3+ with hydroxylamine in the presence of an excess of Fe3O4 as *** resultant col-loids,with an average diameter of less than 100 nm,were obtained;the remaining non-reacted Fe3O4 seeds can be removed by treatment with diluted HCl *** Fe3O4/Au colloids ex-hibit a characteristic peak of UV-visible spectra,which largely depend on the size of the particle and the suspension *** localized surface plasmon resonance peaks red shift and broaden with increased nanoparticle diameter or increased solvent ionic *** optical property is very important in the establishment of means for the detection of biomolecules.

关键词： Fe3O4/Au, nanoparticles, core/shell, structure, optical, property.

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Preparation and application of streptavidin magnetic particles

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Science China Chemistry 2007年第1期50卷 127-134页

作者： ZHANG ZhiFeng ZHU HongLi TANG YiTong cui Ting GENG TingTing CHEN Chao cui yali Biochip Research and Development Center Northwest University(National Engineering Research Center for Miniaturized Detec-tion System)Xi’an 710069China Shaanxi Lifegen Co. Ltd.Xi’an 710069China

Two kinds of streptavidin magnetic particles,namely streptavidin GoldMag particles and streptavidin amino terminal particles were prepared by the methods of physical adsorption and covalent interaction *** streptavidin coated on magnetic particle surface,crucial to many applications,was greatly influenced by the choice of the different *** with DynalbeadsM-270 streptavidin, the binding capacity for biotin of different streptavidin magnetic particles was determined by enzyme inhibition method,and the coupling capacity and activity of biotinylated oligonucleotide on their sur- face were also *** results indicated that the streptavidin GoldMag particle prepared by physical adsorption was stable in STE(NaCl-Tris-EDTA)buffer that was frequently used in nucleic acid hybridization and *** streptavidin amino terminal particles prepared by covalent interaction could be used both in STE buffer and PBS(phosphate buffered saline)*** biotin binding ca- pacity for 1 mg of streptavidin GoldMag particles and streptavidin amino terminal particles was 4950 and 5115 pmol *** capacity of biotinylated oligonucleotide(24 bp)coupled on 1 mg of GoldMag and amino terminal magnetic particles was 2839 and 2978 pmol *** data were about 6-7 times higher than those of DynabeadsM-270 *** hybridization results with FITC-labeled complementary probe on magnetic particle surface demonstrated that the oligonucleotide coupled on streptavidin magnetic particles had high biological activity.

关键词： streptavidin magnetic particles preparation application

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Preparation and characterization of Fe_(3)O_(4)/Au composite particles

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Science China Chemistry 2004年第2期47卷 152-158页

作者： cui yali HUI Wenli WANG Huirong WANG Lijun CHEN Chao Biochip Research and Development Center Northwest University National Engineering Research Center for Miniaturized Detection System Xi'an 710069 China Biochip Research and Development Center Northwest University National Engineering Research Center for Miniaturized Detection System Xi'an 710069 China Biochip Research and Development Center Northwest University National Engineering Research Center for Miniaturized Detection System Xi'an 710069 China Biochip Research and Development Center Northwest University National Engineering Research Center for Miniaturized Detection System Xi'an 710069 China Biochip Research and Development Center Northwest University National Engineering Research Center for Miniaturized Detection System Xi'an 710069 China

Using Fe3O4 nano-particles as seeds, a new type of Fe3O4/Au composite particles with core/shell structure and diameter of about 170 nm was prepared by reduction of Au3+ with hydroxylamine in an aqueous solution. Particle size analyzer and transmission electron micro-scope were used to analyze the size distribution and microstructure of the particles in different conditions. The result showed that the magnetically responsive property and suspension stability of Fe3O4 seeds as well as reduction conditions of Au3+ to Au0 are the main factors which are crucial for obtaining a colloid of the Fe3O4/Au composite particles with uniform particle dispersion, excellent stability, homogeneity in particle sizes, and effective response to an external magnet in aqueous suspension solutions. UV-Vis analysis revealed that there is a characteristic peak of Fe3O4/Au fluid. For particles with d(0.5)=168 nm, the lmax is 625 nm.

关键词： Fe3O4/Au, core/shell structure, composite particle, preparation, properties.

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Amplification editing empowers in situ large-scale DNA duplication

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The Innovation 2024年第6期5卷 33-34页

作者： yali cui Yi Wu Yingjin Yuan Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering(Ministry of Education) School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300000China Frontiers Research Institute for Synthetic Biology Tianjin UniversityTianjin 300000China

Repetitive sequences in genomes play crucial biological roles involved in maintaining chromosome structure or the development of *** naturally occurring large-scale repetitive sequences will facilitate the exploration of their functions and elucidate their underlying ***,constructing programmable large-scale repetitive sequences on chromosomes remains a challenge.

关键词： mechanisms. sequences constructing

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Parallel Simulation of Groundwater Flow in the North China Plain

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Journal of Earth Science 2014年第6期25卷 1059-1066页

作者： Tangpei Cheng Jingli Shao yali cui Zeyao Mo Zhong Han Ling Li Institute of Applied Physics and Computational Mathematics CAEP Software Center for High Performance Numerical Simulation School of Water Resources and Environmental Science China University of Geosciences

Numerical modeling is of crucial importance in understanding the behavior of regional groundwater system. However, the demand on modeling capability is intensive when performing high-resolution simulation over long time span. This paper presents the application of a parallel program to speed up the detailed modeling of the groundwater flow system in the North China Plain. The parallel program is implemented by rebuilding the well-known MODFLOW program on our parallelcomputing framework, which is achieved by designing patch-based parallel data structures and algorithms but maintaining the compute flow and functionalities of MODFLOW. The detailed model with more than one million grids and a decade of time has been solved. The parallel simulation results were examined against the field observed data and these two data are generally in good agreement. For the comparison on solution time, the parallel program running on 32 cores is 6 times faster than the fastest MICCG-based MODFLOW program and 11 times faster than the GMG-based MODFLOW program. Therefore, remarkable computational time can be saved when using the parallel program, which facilitates the rapid modeling and prediction of the groundwater flow system in the North China Plain.

关键词： parallel computing groundwater flow modeling MODFLOW North China Plain

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