Engineering Research Center for Groundwater Pollution Control and Remediation

Beijing, China

Engineering Research Center for Groundwater Pollution Control and Remediation

Beijing, China
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Qu C.-S.,Beijing Normal University | Qu C.-S.,Engineering Research Center for Groundwater Pollution Control and Remediation | Qu C.-S.,Shanghai Changkai Geotechnical Co.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2010

According to the excavation stages, pumping test, geological and environmental conditions, dewatering program in deep foundation pit of Dongjiadu section in Shanghai Metro Line No.4 is made, which is the in situ restoration of subsided tunnel in disturbed layers. The full coupling numerical simulation model between the three dimensional dewatering seepage and soil deformation control is carried. The model parameters are obtained by the pumping test, and the numerical results agree well with the monitoring data. The control system of waterlevel, subsidence, evacation depth and flow are shown in the dewatering information map, which can reflect the real-time information and protect the nearby building effectively.


Zhai Y.-Z.,Beijing Normal University | Zhai Y.-Z.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang J.-S.,Beijing Normal University | Wang J.-S.,Engineering Research Center for Groundwater Pollution Control and Remediation | And 4 more authors.
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2012

The aim of this paper is to analyze the spatial and temporal changes of renewability of groundwater in Beijing, which is great important for the sustainable utilization and management of groundwater resources. The recharge volume, renewing cycle, renewal rate, and recharge rate of groundwater in the Beijing Plain, especially in the mining aquifers, were calculated using groundwater table dynamic equilibrium method. The renewability of groundwater and changes of its spatio-temporal were further evaluated. The study results show that, under natural conditions, the renewability of groundwater is generally strong with a decreasing trend from the piedmont to the central plain. Secondly, the aquifers in this study have favorable boundary conditions for groundwater recharge from exterior and excellent water bearing conditions. The amount of precipitation is the bottleneck factor influencing the renewability of groundwater. Thirdly, the renewability of groundwater in investigated area and all the sub areas have decreased clearly with mean annual groundwater recharge rate during 2001-2008 (0.28 m/a) decreasing by 35.6% compared with that in 1981-2000. Lastly, the mean groundwater level in 2008 is 19.73 m which is deeper than that in natural conditions (in and before 1960s). The total loss of groundwater volume has reached 101×10 8 m 3 since 2008 (accounting for 18% of the total volume of groundwater in the mining aquifers) because the groundwater exploitation intensity is always exceeding the renewability of groundwater recently. The above evidences show that the issue of groundwater sustainable supply is serious in Beijing under the impacts of climate change and human activities.


Zhai Y.-Z.,Beijing Normal University | Zhai Y.-Z.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang J.-S.,Beijing Normal University | Wang J.-S.,Engineering Research Center for Groundwater Pollution Control and Remediation
Shuili Xuebao/Journal of Hydraulic Engineering | Year: 2012

Water exchange during the recharge-discharge process of groundwater meets the law of mass conservation, which can be described that the input and output of groundwater should meet the water budget equation in detail. The comprehension of elements of groundwater regime and their temporal and spatial variations reflecting the mechanism of groundwater exchange process is vital for the groundwater evaluation and the prospective prediction of water supply capacity. The temporal variations and relationships of elements of the groundwater regime (including groundwater level, recharge, and discharge) in Beijing Plain were analyzed in this paper based on water budget theory and using water-table fluctuation method. The results show that, (1) the annual total output of groundwater is generally more than the annual input during the past decades, which leads to the yearly decreasing of groundwater reserve; (2) the aquifer can yield (store) about 476×10 6 m 3 of water when the mean groundwater level drops (raise) per meter; (3) large part of the extraction quantity of groundwater during the past decades are from the natural discharge of groundwater captured and there exists a well negative linear correlation between these two water budget items; and (4) the specific yield of aquifer within the disturbed belt of groundwater level (buried 7.50~22.92 m below ground) is generally decreasing with depth with the equivalent specific yield of 0.077.


Zhai Y.,Beijing Normal University | Zhai Y.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang J.,Beijing Normal University | Wang J.,Engineering Research Center for Groundwater Pollution Control and Remediation | And 4 more authors.
Shuikexue Jinzhan/Advances in Water Science | Year: 2013

The renewability of groundwater has been a hot topic in the field of groundwater science and engineering in recent years. However, the definition of groundwater renewability has not been uniform, and the assessment indices are also relatively diverse, of which the groundwater renewal period, recharge rate, age and residence time are commonly used. The assessment results of groundwater renewability on the basis of those indices are usually inconsistence with each other. This is because different physical characteristics are considered in the establishment of those indices, though close relationships do exist between them. Based on a case study from Beijing, a comparison is done on the applicability of two closely related indices (renewal period and recharge rate) for assessing the groundwater renewability. The results show that: (1) the different conclusions could be reached for the relative strength of groundwater renewability in Beijing's districts and counties depending on the assessment indices used; (2) the conclusion with the groundwater recharge rate seems to be more stable compared to the other one; (3) the groundwater recharge rate has more important practical significance being an assessment index for groundwater renewability.


Zhai Y.,Beijing Normal University | Zhai Y.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang J.,Beijing Normal University | Wang J.,Engineering Research Center for Groundwater Pollution Control and Remediation | And 5 more authors.
Journal of Radioanalytical and Nuclear Chemistry | Year: 2013

The Yongding River Alluvial Fan is a northwestern part of the North China Plain, at which Beijing is located. Since 1950 and especially 1970, excessive groundwater exploitation has resulted in a significant drop of groundwater table, and it's believed that groundwater will be intensively used continuously in the future. It's essential to reveal the renewability and the evolution of the groundwater for reasonable management, which was achieved based on the analyses of the major ions and environmental tracers in groundwater. According to the dating results of 3H, CFCs, and 14C, the age of the shallow and deep groundwater was from <5 to 60 a and from <4,000 to >12,000 a, respectively. The recharge rate determined by the groundwater age generally had a decreasing trend from the NW (0.40-1.44 m/a) to the SE (0.07-0.48 m/a). Na and HCO3 accumulated from the NW to the SE and the latter was the dominant anion. Chemical modification occurred progressively along the flow paths. The water type of the shallow and deep groundwater changed from Ca-Mg-HCO3 to Na-HCO3 and from Ca-Mg-HCO3 to Ca-Na-Mg-HCO3 and Na-Ca-Mg-HCO3 from the NW to the SE, respectively. The shallow groundwater was vulnerable and susceptible to contamination scattered throughout the region, which would probably further extend to the deep groundwater because of the vertical groundwater flow especially through the preferential pathways due to their increasing hydraulic connections. © 2013 Akadémiai Kiadó, Budapest, Hungary.


Zhai Y.,Beijing Normal University | Zhai Y.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang J.,Beijing Normal University | Wang J.,Engineering Research Center for Groundwater Pollution Control and Remediation | And 4 more authors.
Journal of Geographical Sciences | Year: 2012

It is essential to establish the water resources exploitation and utilization planning, which is mainly based on recognizing and forecasting the water consumed structure rationally and scientifically. During the past 30 years (1980-2009), mean annual precipitation and total water resource of Beijing have decreased by 6. 89% and 31. 37% compared with those perennial values, respectively, while total water consumption during the same period reached pinnacle historically. Accordingly, it is of great significance for the harmony between socio-economic development and environmental development. Based on analyzing total water consumption, agricultural, industrial, domestic and environmental water consumption, and evolution of water consumed structure, further driving forces of evolution of total water consumption and water consumed structure are revealed systematically. Prediction and discussion are achieved for evolution of total water consumption, water consumed structure, and supply-demand situation of water resource in the near future of Beijing using Time Series Forecasting Method. The purpose of the endeavor of this paper is to provide scientific basis for the harmonious development between socio-economy and water resources, for the establishment of rational strategic planning of water resources, and for the social sustainable development of Beijing with scientific bases. © 2012 Science Press and Springer-Verlag Berlin Heidelberg.


Zhai Y.,Beijing Normal University | Zhai Y.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang J.,Beijing Normal University | Wang J.,Engineering Research Center for Groundwater Pollution Control and Remediation | And 4 more authors.
Environmental Earth Sciences | Year: 2013

An investigation was conducted in Beijing to identify the groundwater evolution and recharge in the quaternary aquifers. Water samples were collected from precipitation, rivers, wells, and springs for hydrochemical and isotopic measurements. The recharge and the origin of groundwater and its residence time were further studied. The groundwater in the upper aquifer is characterized by Ca-Mg-HCO3 type in the upstream area and Na-HCO3 type in the downstream area of the groundwater flow field. The groundwater in the lower aquifer is mainly characterized by Ca-Mg-HCO3 type in the upstream area and Ca-Na-Mg-HCO3 and Na-Ca-Mg-HCO3 type in the downstream area. The δD and δ18O in precipitation are linearly correlated, which is similar to WMWL. The δD and δ18O values of river, well and spring water are within the same ranges as those found in the alluvial fan zone, and lay slightly above or below LMWL. The δD and δ18O values have a decreasing trend generally following the precipitation → surface water → shallow groundwater → spring water → deep groundwater direction. There is evidence of enrichment of heavy isotopes in groundwater due to evaporation. Tritium values of unconfined groundwater give evidence for ongoing recharge in modern times with mean residence times <50 a. It shows a clear renewal evolution along the groundwater flow paths and represents modern recharge locally from precipitation and surface water to the shallow aquifers (<150 m). In contrast, according to 14C ages in the confined aquifers and residence time of groundwater flow lines, the deep groundwater is approximately or older than 10 ka, and was recharged during a period when the climate was wetter and colder mainly from the piedmont surrounding the plain. The groundwater exploitation is considered to be "mined unsustainably" because more water is withdrawn than it is replenished. © 2012 Springer-Verlag Berlin Heidelberg.


Bai L.,Chinese Research Academy of Environmental Sciences | Bai L.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang Y.,China National Environmental Monitoring Station | Li F.,Chinese Research Academy of Environmental Sciences | Li F.,Engineering Research Center for Groundwater Pollution Control and Remediation
Advanced Materials Research | Year: 2012

The risk assessment model and parameter system of groundwater pollution were established in this paper. The multi-index evaluation method of groundwater pollution sources was proposed, and the GIS-based risk assessment method of groundwater pollution was produced in comprehensive consideration of groundwater vulnerability and groundwater pollution sources. The multi-index method suggested in this paper was used in the risk assessment of groundwater pollution at a plain area of a big city in North China, and the different grades of groundwater pollution risk were computed. The evaluation results show that the groundwater pollution risk is determined by the combined action of pollution sources and groundwater vulnerability. The established risk assessment method of groundwater pollution could give a scientific support for the regional groundwater pollution prevention and control planning. © (2012) Trans Tech Publications, Switzerland.


Bai L.,Chinese Research Academy of Environmental Sciences | Bai L.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang Y.,China National Environmental Monitoring Station | Meng F.,Chinese Research Academy of Environmental Sciences
Water and Environment Journal | Year: 2012

Groundwater vulnerability assessment plays a vital role in the utilization and protection of groundwater resources. DRASTIC is one of the most widely used models for groundwater vulnerability assessment. However, the DRASTIC model should be modified based on the local hydrogeological conditions in order to get a relatively accurate result. In this study, Baotou, China was chosen as a case study. The groundwater vulnerability was assessed using DRASTIC at first, but the evaluation results were not consistent with the groundwater quality. So the DRASTIC model was modified based on extension theory and analytic hierarchy process (AHP) method. The extension theory could be used to divide the groundwater vulnerability grades in the DRASTIC model. It is a new attempt to use extension theory and DRASTIC in the assessment of groundwater vulnerability, and the research results show that this method is better for assessing groundwater vulnerability. © 2011 The Authors. Water and Environment Journal © 2011 CIWEM.


Bai L.,Chinese Research Academy of Environmental Sciences | Bai L.,Engineering Research Center for Groundwater Pollution Control and Remediation | Wang Y.,China National Environmental Monitoring Station | Fang H.,China University of Geosciences | And 5 more authors.
Water Science and Technology: Water Supply | Year: 2013

Current research on groundwater vulnerability is aimed mainly at groundwater pollution vulnerability (GPV), and the vulnerability of groundwater quantity is seldom considered. It is important to carry out the groundwater vulnerability evaluation for the management of groundwater resources. This paper presents evaluation models and methods for assessing groundwater quantity and pollution vulnerability. The models and methods were used to evaluate the groundwater vulnerability in the plain area of Baotou, Inner Mongolia, China. The groundwater quantity vulnerability was assessed by computing the groundwater recharge rate, and the GPV was evaluated by simulating the migration time for pollutants traveling from ground surface to the aquifer. The research results could provide scientific support for the management of regional groundwater resources, prevention and control of groundwater pollution. © IWA Publishing 2013.

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