Evaluation and selection on multi-dimensional regulation schemes for water cycle system

2013 ◽  
pp. 3-8
Author(s):  
Kai Xu ◽  
Lin Wang ◽  
Zhiguo Gan ◽  
Haiping Ji
Keyword(s):  
Water Cycle ◽  
Cycle System

Application of Rainwater Garden in Economical Ecological Urban Landscape

2013 ◽  
Vol 409-410 ◽  
pp. 800-805 ◽  
Author(s):  
Xiao Yi Xuan ◽  
Hui Xuan Zhang
Keyword(s):  
Sustainable Development ◽  
Urban Landscape ◽  
Water Cycle ◽  
Underground Water ◽  
Urban Water ◽  
Local Climate ◽  
The Sustainable Development ◽  
Cycle System ◽  
Island Effect ◽  
Cyclic Utilization

With the acceleration of global sustainable development, the shortage of water resources especially the city has become the focus of attention in all countries since water is the key to build a resources-saving ecological city. The article improved the existing "rain garden" project and replenished the purification of the rain in order to realize the urban water cyclic utilization ,through recycling rainwater, which can manage rainstorm effectively , improve the urban water cycle system, as well as supply urban irrigation and underground water. Besides, the combination of urban landscape and stormwater management system, if widely accepted, will not only improve the urban water problem, but also improve the urban environment, alleviating the urban heat island effect and improving the local climate. It can shape a new resources-saving ecological city and then realize the sustainable development of resources.

Evaluating the effects of human regulation on development and recovery characteristics of hydrological drought in a semi-arid area

2021 ◽  
Author(s):  
Yang Xu ◽  
Xuan Zhang
Keyword(s):  
Water Cycle ◽  
Hydrological Drought ◽  
Cycle System ◽  
Long Duration ◽  
Forecasting System ◽  
Drought Early Warning ◽  
Hydrological Droughts ◽  
The Relationship ◽  
Regional Water ◽  
Semi Arid

<p>Understanding the impacts of human regulation on development and recovery characteristics of hydrological drought is crucial to detect the relationship between hydrological drought and the regional water cycle system. In this study the standardized streamflow index (SSI) which based on the observation and SWAT simulated runoff data were used to represent the hydrological drought under human disturbed and naturalized scenarios, respectively. Furthermore, the hydrological drought events under each scenario was divided into the development and recovery stages by the run theory. Comparing two scenarios under the stage Ⅰ (1980-1989) and stage Ⅱ (2007-2016), the human disturbed scenario presents a more severe hydrological drought than the naturalized scenario at stage Ⅱ. Our study further found that the reservoir operation was the irreplaceable factor that affected hydrological drought development and recovery in the study area. The reservoir has the strong ability to alleviate the long-duration hydrological droughts, however, the recovery ability of drought has been weakened. To be noticed that though the water intake from the river by the reservoir has been reduced, the drought alleviates ability of the reservoir still become weaker than prototype after working for 30 years. Therefore, as time goes on the effects of reservoir will become progressively more important. The results of our study could be a hint for policymakers and stakeholders to enhance the drought early warning and forecasting system to optimal reservoirs’ management at semi-arid areas.</p>

Quantitative Research of Water Resource Allocation Response Caused by Water Cycle System

2013 ◽  
Vol 864-867 ◽  
pp. 2422-2427
Author(s):  
Min Wang
Keyword(s):  
Resource Allocation ◽  
Water Resource ◽  
Quantitative Research ◽  
Water Cycle ◽  
Mountainous Area ◽  
Water Resource Allocation ◽  
Plain Area ◽  
Cycle System ◽  
Special Support ◽  
Engineering Measures

Water resource allocation was carried out by a serious of engineering and non-engineering measures. These measures would influence region water cycle on two aspects, cycling process and cycling ways. Based on the data of Ningxia, water cycle changes in different areas caused by different water resource allocation measures were analyzed. A quantificational method about how to affect region water cycle by water resource allocation was also presented. At last, the water cycle changes happened in plain area, Yanghuang area, and south mountainous area were forecasted, that would give some special support for people to carry out water resource allocation rationally.

Strategic asset management planning of stormwater drainage systems

2008 ◽  
Vol 3 (3) ◽  
Author(s):  
A. Kannapiran ◽  
A. Chanan ◽  
G. Singh ◽  
P. Tambosis ◽  
J. Jeyakumaran ◽  
...  
Keyword(s):  
Asset Management ◽  
Field Data ◽  
Water Cycle ◽  
Condition Index ◽  
Urban Water ◽  
Development Programs ◽  
Management Planning ◽  
Cycle System ◽  
Urban Water Cycle ◽  
Modelling Approach

Management of the urban water cycle in an integrated manner is an essential task to protect, restore and enhance in a sustainable manner. Strategic asset management planing is being developed as local government authorities face many challenges associated with managing the urban water cycle system. Statistical or conventional mathematical modelling approach has been found not practical for assessment of deteriorating infrastructures. Alternatively, application of fuzzy-based models is found more suitable as it links engineering judgment, experience and scarce field data of the deteriorating assets. In this study, a representative network of buried stormwater system's data is drawn and a pipe condition index is derived by linking the field data and reasoning using fuzzy approach. The inferred results are found to be useful and relevant for asset maintenance and future development programs.

scholarly journals Comprehensive diagnosis of water cycle system in great urban area considering earthquake disaster.

2001 ◽  
Vol 29 ◽  
pp. 339-345
Author(s):  
Yusuke NAKASE ◽  
Yasuo SHIMIZU ◽  
Yoshimi HAGIHARA ◽  
Akira SAKAI
Keyword(s):  
Urban Area ◽  
Water Cycle ◽  
Earthquake Disaster ◽  
Cycle System ◽  
Comprehensive Diagnosis

Slope Cracks in the Safety Assessment of the Rainfall Period

2013 ◽  
Vol 405-408 ◽  
pp. 2364-2369 ◽  
Author(s):  
Te Hsing Chang ◽  
Chi Li Lin ◽  
Fu Kuo Huang
Keyword(s):  
Shear Strength ◽  
Numerical Model ◽  
Moisture Content ◽  
Slope Stability ◽  
Groundwater Level ◽  
Safety Assessment ◽  
Pore Water Pressure ◽  
Water Cycle ◽  
Water Pressure ◽  
Cycle System

Unsaturated cracked slopes are easily to be affected by rainfall in the soil. Actually, some of the rainfall becomes the surface runoff and the rest permeates the crack under the ground in water cycle system. The infiltration makes the groundwater level rise. It also increases the pore water pressure and slide stress of the soil and decreases the anti-shear strength of soil. That makes the slope fracture or deform. However, most of the slope stability analyses set the physical properties of the soil as constant values but neglect the influence of the crack and infiltration. Those analyses underestimate the influence of the crack and the change of water content to the anti-shear strength of the soil. Therefore, it was unable to predict the possible damage time point by these evaluation results. The knowledge and methodology of the rainfall combine infiltration and slope stability analysis in this research. Simulations of the moisture content of the soil and the groundwater level are performed by FEMWATER numerical model. The simulating conditions are based on the different cracked positions and rainfall durations. The data of moisture content changes of the soil will be transformed into the parameters of safety factors fitted by STEDWIN numerical model. The influence of the slope stability with different cracked positions was gained from the simulations.

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