2008 Vol. 1, No. 2

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Simulation of rainfall-underground outflow responses of a karstic watershed in Southwest China with an artificial neural network
Chen Xi, Chen Cai, Hao Qingqing, Zhang Zhicai, Shi Peng
2008, 1(2): 1-9 . doi: 10.3882/j.issn.1674-2370.2008.02.001
Abstract(2209) PDF(2230)
Abstract:
Karstic aquifers in Southwest China are largely located in mountainous areas and groundwater level observation data are usually absent. Therefore, numerical groundwater models are inappropriate for simulation of groundwater flow and rainfall-underground outflow responses. In this study, an artificia...
Application of TOPMODEL in Buliu River Basin and comparison with Xin’anjiang model
Deng Peng, Li Zhijia, Xie Fan
2008, 1(2): 25-32 . doi: 10.3882/j.issn.1674-2370.2008.02.003
Abstract(2167) PDF(3240)
Abstract:
Along with the rapid development of computer and GIS technology, hydrological models have progressed from lumped to distributed models. TOPMODEL, a bridge between lumped and distributed models, is a semi-distributed model in which the predominant factors determining the formation of runoff are deriv...
Recent strong inter-decadal change of Meiyu in 121-year variations
Xu Qun
2008, 1(2): 33-46 . doi: 10.3882/j.issn.1674-2370.2008.02.004
Abstract(1572) PDF(1561)
Abstract:
The strongest change in Meiyu periods in the mid-lower Yangtze Basin (MLY) since 1885 occurred in the late 1970s: a stage of weak Meiyu from 1958 to 1978 abruptly transformed into a stage of plentiful Meiyu from 1979 to 1999. The average Meiyu amount of the latter 21 years increased by 66% compared ...
Critical discharge at Datong for controlling operation of South-to-North Water Transfer Project in dry seasons
Wang Yigang, Huang Huiming, Li Xi
2008, 1(2): 47-58 . doi: 10.3882/j.issn.1674-2370.2008.02.005
Abstract(2188) PDF(1985)
Abstract:
Previous research shows that there is a strong correlation between saltwater intrusion in the Yangtze Estuary and discharge at Datong. In the near future, the discharge of the Yangtze River during dry seasons will decrease due to the construction and operation of large water diversion projects, incl...
Similarity criterion of flood discharge atomization
Zhou Hui, Wu Shiqiang, Chen Huiling, Zhou Jie, Wu Xiufeng
2008, 1(2): 59-65 . doi: 10.3882/j.issn.1674-2370.2008.02.006
Abstract(2017) PDF(1968)
Abstract:
By combining the results of prototype observation of flood discharge atomization at the Wujiangdu Hydropower Station, and by adopting the serial model test method, the model scale effect was examined, the influences of the Reynolds and Weber numbers of water flow on the rain intensity of flood disch...
Impact of hydroelectric projects on river environment: Analysis of water quality changes in Ningxia Reach of Yellow River
Sun Dongpo, Lu Ruili, Song Yongjun, Yan Jun
2008, 1(2): 66-75 . doi: 10.3882/j.issn.1674-2370.2008.02.007
Abstract(1927) PDF(1850)
Abstract:
In this paper, the relationship between hydroelectric projects and the river environment is analyzed. Recently, the large-scale regulation of runoff by large hydroelectric projects in the Ningxia Reach of the Yellow River has altered natural runoff processes, causing an increase in the probability o...
Risk analysis for earth dam overtopping
Mo Chongxun, Liu Fanggui, Yu Mei, Ma Rongyong, Sun Guikai
2008, 1(2): 76-87 . doi: 10.3882/j.issn.1674-2370.2008.02.008
Abstract(1962) PDF(2821)
Abstract:
In this paper, a model of overtopping risk under the joint effects of floods and wind waves, which is based on risk analysis theory and takes into account the uncertainties of floods, wind waves, reservoir capacity and discharge capacity of the spillway, is proposed and applied to the Chengbihe Rese...
Nonlinear simulation of arch dam cracking with mixed finite element method
Ren Hao, Li Tongchun, Chen Huifang, Zhao Lanhao
2008, 1(2): 88-101 . doi: 10.3882/j.issn.1674-2370.2008.02.009
Abstract(2277) PDF(2367)
Abstract:
This paper proposes a new, simple and efficient method for nonlinear simulation of arch dam cracking from the construction period to the operation period, which takes into account the arch dam construction process and temperature loads. In the calculation mesh, the contact surface of pair nodes is l...
Particle size distribution and property of bacteria attached to carbon fines in drinking water treatment
Wang Leilei, Chen Wei, Lin Tao
2008, 1(2): 102-111 . doi: 10.3882/j.issn.1674-2370.2008.02.010
Abstract(1963) PDF(3502)
Abstract:
The quantitative change and size distribution of particles in the effluents from a sand filter and a granular activated carbon (GAC) filter in a drinking water treatment plant were investigated. The average total concentration of particles in the sand filter effluent during a filter cycle was 148 pa...
Tomato and cowpea crop evapotranspiration in an unheated greenhouse
Xu Junzeng, Peng Shizhang, Luo Yufeng, Jiao Xiyun
2008, 1(2): 112-120 . doi: 10.3882/j.issn.1674-2370.2008.02.011
Abstract(2272) PDF(3789)
Abstract:
With the development of protected cultivation of vegetables in China, it is necessary to study the water requirements of crops in greenhouses. Lysimeter experiments were carried out to investigate tomato (2001) and cowpea (2004) crop evapotranspiration (ETc) in an unheated greenhouse in Eastern Chin...
Real-time flood forecasting of Huai River with flood diversion and retarding areas
Li Zhijia, Bao Hongjun, Xue Cangsheng, Hu Yuzhong, Fang Hong
2008, 1(2): 10-24 . doi: 10.3882/j.issn.1674-2370.2008.02.002
Abstract(2196) PDF(2984)
Abstract:
A combination of the rainfall-runoff module of the Xin’anjiang model, the Muskingum routing method, the water stage simulating hydrologic method, the diffusion wave nonlinear water stage method, and the real-time error correction method is applied to the real-time flood forecasting and regulation of...

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