Jiangxi Provincial Water Conservancy Planning and Designing Institute

Jiangxi, China

Jiangxi Provincial Water Conservancy Planning and Designing Institute

Jiangxi, China
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Luo W.,Wuhan University | Luo W.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Zhang X.,Wuhan University | Deng Z.,Wuhan University | Xiao Y.,Wuhan University
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | Year: 2013

In recent years, the low water level in Poyang Lake appeared earlier and lasted longer than before, and it continued to break the recorded historic lowest value, which caused the disadvantageous influence on the health of the wetland ecological system in Poyang lake. The total runoff into Poyang Lake is closely related with the water level change and drought-flood alternation, so the study on the variation and periodic law of the total runoff into Poyang Lake plays an important role in the protection of ecological system in Poyang Lake basin. Based on the daily time series of the total runoff into Poyang Lake from 1959 to 2009, the variation trends of the total runoff into Poyang Lake was analyzed by the linear regression analysis, the methods of the Mann-Kendall and the moving average. The results show that the annually total runoff into Poyang Lake has a non-significant upward trend. The wavelet analysis shows that there is the first main 19-yearly period in the annually total runoff time series. And the seasonally total runoff time series, divided into four seasonal time intervals, Jan to Mar, Apr to Jun, Jul to Sep and Oct to Dec, have several main time scales of periods with 31, 19, 17 and 14-yearly main periods. It is concluded that the 19-yearly main period of the annually total runoff time series is determined by the combination of the main periods of the four seasonally total runoff time series. Based on the analysis of the variation of the total runoff into Poyang Lake, the drought-flood abrupt alternation was analyzed by using the Long-cycle Drought-Flood Abrupt Alternation Index(LDFAI). The results show that the alternating cycle from drought to flood and from flood to drought exists between Apr to May and Jun to Jul in the long term. And into 21st century, the interval from drought to flood and from flood to drought is becoming shorter and shorter, which means the oscillation of the alternation of drought-flood is intensified.


Wu X.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Wang Z.,South China Institute of Environmental Sciences | Zhou H.,Jiangxi Provincial Water Conservancy Planning and Designing Institute
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | Year: 2013

Digital wetland construction plays meaningful function for wetland resources information sharing, wetland environment protection and degraded wetland restoration. Evolutional process, degenerated mechanism and main dynamics of the Poyang Lake wetland were systematically analyzed using multi-temporal and long-time dynamic monitoring interpretation, spatial analysis and decision support technology. Then, the actualities of wetland evolvements affected by integrated physical and anthropic factors such as, land desertification, soil erosion, frequent droughts, increased water pollution, plummeted biological resources, and severely serious degradation were analyzed. In addition, several aspects in the wetland evolving process were discussed, such as, guide of macroscopic policy, interaction among population, resources and enciroment, coupling of climate, ecology and hydrology social and economic factors. Finally, coordinating digital wetland regulation systems such as wetland and watershed system, internal system and social-economy system were constructed.


Wang Z.,Central South University | Chai L.,Central South University | Wang Y.,Central South University | Yang Z.,Central South University | And 2 more authors.
Environmental Monitoring and Assessment | Year: 2011

As part of our efforts to find effective methods to the drinking water risk management, the health risk assessment of arsenic and cadmium in groundwater near Xiangjiang River was analyzed. The results suggest that although the arsenic and cadmium concentrations in 97% of groundwater sources are less than the requirement of Water Quality Standards for Drinking Water (GB5749-2006) in China, the residents served by almost all of the investigated centralized drinking water sources have a significant potential health risk by consumption, especially cancer risk. It is justified through analyses that risk assessment is an effective tool for risk management, and the maximum permissible concentration of arsenic and cadmium in drinking water (0.01 and 0.005 mg L -1, respectively) is suitable for China at present, considering the current economic status of China. Risk managers develop cleanup standards designed to protect against all possible adverse effects, which should take into account highly exposed individuals, effects of mixtures of toxic substances, attendant uncertainties, and other factors such as site-specific (or generic) criteria, technical feasibility, cost-benefit analyses, and sociopolitical concerns. © 2010 Springer Science+Business Media B.V.


Chai L.,Central South University | Wang Z.,Central South University | Wang Y.,Central South University | Yang Z.,Central South University | And 2 more authors.
Science of the Total Environment | Year: 2010

Groundwater samples were collected in the Xiangjiang watershed in China from 2002 to 2008 to analyze concentrations of arsenic, cadmium, chromium, copper, iron, lead, mercury, manganese, and zinc. Spatial and seasonal trends of metal concentrations were then discussed. Combined with geostatistics, an ingestion risk assessment of metals in groundwater was performed using the dose-response assessment method and the triangulated irregular network (TIN) model. Arsenic concentration in groundwater had a larger variation from year to year, while the variations of other metal concentrations were minor. Meanwhile, As concentrations in groundwater over the period of 2002-2004 were significantly higher than that over the period of 2005-2007, indicating the improvement of groundwater quality within the later year. The hazard index (HI) in 2002 was also significantly higher than that in 2005, 2006, 2007 and 2008. Moreover, more than 80% of the study area recorded an HI of more than 1.0 for children, suggesting that some people will experience deleterious health effects from drinking groundwater in the Xiangjiang watershed. Arsenic and manganese were the largest contributors to human health risks (HHRs). This study highlights the value of long-term health risk evaluation and the importance of geographic information system (GIS) technologies in the assessment of watershed-scale human health risk. © 2010 Elsevier B.V.


Chen J.-Q.,Central South University | Wang Z.-X.,Central South University | Wu X.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Zhu J.-J.,Central South University | Zhou W.-B.,Central South University
Transactions of Nonferrous Metals Society of China (English Edition) | Year: 2011

A total of 153 soil samples were collected from Changsha City, China, to analyze the contents of As, Cd, Cr, Cu, Hg, Mn, Ni, Pb and Zn. A combination of sampling data, multivariate statistical method, geostatistical analysis, direct exposure method and triangulated irregular network (TIN) model was successfully employed to discriminate sources, simulate spatial distributions and evaluate children's health risks of heavy metals in soils. The results show that not all sites in Changsha city may be suitable for living without remediation. About 9.0 of the study area provided a hazard index (HI)>1.0, and 1.9 had an HI>2.0. Most high HIs were located in the southern and western areas. The element of arsenic and the pathway of soil ingestion were the largest contribution to potential health risks for children. This study indicates that we should attach great importance to the direct soil heavy metals exposure for children's health. © 2011 The Nonferrous Metals Society of China.


Zhang L.-S.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Sun W.-P.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Chen J.,Jiangxi Provincial Water Conservancy Planning and Designing Institute
Procedia Engineering | Year: 2011

In order to improve the prediction precision of the model test water conservancy project and speed up the experiment, through the introduction of the multi-agent theory, this paper puts forward a new type of automatic control system model which is based on multi-agent water project. The automatic system monitoring agency comprises the league system control agent, the flow control agent, water level control agent and velocity of flow control agent. These control agents are responsible for controlling the whole water engineering model test and three other major tasks including testing and adjusting the flow, the water level, velocity and the sending process. The result indicates that ("the final result, make the system control agent of the normal operation of the water model test project". The system has many advantages. For example, it is a fast and convenient way for communication. This automation hydropower project model test is with great practical value. © 2011 Published by Elsevier Ltd.


Zhang L.,Jiangxi Provincial Water Conservancy Planning And Designing Institute | Chen J.,Jiangxi Provincial Water Conservancy Planning And Designing Institute | Sun W.,Jiangxi Provincial Water Conservancy Planning And Designing Institute
Advanced Materials Research | Year: 2012

In this paper, put forward a real-time navigation method adopted in the process of 3D virtual geographical scene roaming, which get the real combination between the virtual reality technology and mature GIS applications. And it has realized the entity location, property information, the management of the buffer zone and other functions through the geographical coordinates of the earth's counterpart in the 3D virtual geographical scene. However, the functions are likely to bring out only if it is in the 2-D environment previously. It has provided an effective assistance for the daily management. And the solution has been proved that not only is applicable to the basin simulation system development, but also has referenced value in involving the development of the GIS simulation. © (2012) Trans Tech Publications, Switzerland.


Zhang L.,Jiangxi Provincial Water Conservancy Planning and Designing Institute
Lecture Notes in Electrical Engineering | Year: 2013

With the rapid development of information construction, the project design to rely on traditional video conferencing, conference calls, e-mail between joint trials cannot meet the needs of people to communicate. This chapter describes the presentation of this new technology of remote visualization for plan approval system and operating practices fully comply with the approval needs of the design process in the drawings, the real feasible project design industry's high-tech plan approval mode, give water conservancy the design of communication of the design industry to bring new changes. © 2013 Springer-Verlag Berlin Heidelberg.


Chen L.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Li Y.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Li M.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Luo W.,Jiangxi Provincial Water Conservancy Planning and Designing Institute
Advances in Science and Technology of Water Resources | Year: 2013

In order to provide a scientific basis for the study on regulation line of Gan River, taken the reach from Ji'an hydrology station in the upstream of Gan River to dam site of Xia River as an example, flood characteristics including water level, water depth, flow field, and flow hydrodynamic axis were studied by using a two-dimensional unsteady flow model. The flood submerged range was gained from calculation results by this model, and then the river band scoured reaches were determined through the river band morphology and the bending radius of flow hydrodynamic axis. Research results show that: water-level variations of the study reach gradually increases from upstream to downstream, the water-level variations near the dam site of Xia River is about 2 m, and the water-level variations of the Ji'an hydrology station is about 1.4 m. The peak flow of each section sequentially appears from upstream to downstream, and the time for the maximum peak flow occurring between upstream and downstream is 10 h. Restricted by both sides of riverbank, massif, and highland, the flood of the reach is almost retrained in the watercourse, and the flood submerged range is relatively board in some flat low-lying region. According to the above research results, the position and range of the seven river band scoured reaches were determined.


Fang Z.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Wu P.,Jiangxi Provincial Water Conservancy Planning and Designing Institute | Liu D.-Z.,Jiangxi Provincial Water Conservancy Planning and Designing Institute
Modern Tunnelling Technology | Year: 2013

The parameters of rock strata are key factors affecting the analysis of tunnel safety, and the determination of parameters is usually based on in situ data monitoring and numerical simulation. Using site-monitoring data obtained by the multi-point displacement meters, as well as numerical calculations achieved by finite element model using the error sum of squares as its objective function, an orthogonal back analysis was performed. The calculation results show that this orthogonal back analysis is feasible and can be used as a reference for similar projects.

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