scholarly journals A NEW FLOOD CONTROL METHOD BY DAM GATE OPERATION BASED ON RUNOFF CHARACTERISTICS OF A BASIN FOR THE IMPROVEMENT OF FLOOD MITIGATION EFFECTS OF A DAM

2009 ◽  
Vol 65 (2) ◽  
pp. 106-122
Author(s):  
Masashi SHIMOSAKA ◽  
Shuichi KURE ◽  
Tadashi YAMADA ◽  
Hideo KIKKAWA
Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 892 ◽  
Author(s):  
Lijuan Hua ◽  
Xinyu Wan ◽  
Xianhui Wang ◽  
Fangzheng Zhao ◽  
Ping’an Zhong ◽  
...  

Utilizing floodwater resources is important in relieving water shortages, and dynamic control of the flood limited water level (FLWL) for reservoir operation in a flood season is an effective method to achieve this objective. Based on the capacity-constrained pre-release method, this study proposed an improved dynamic control method that considered the duration of dry periods and the lead time of flood forecasts. The pre-release process was divided into two periods: water use and flood control. Taking Xianghongdian Reservoir in the Huai River Basin of China as an example, this study analyzed the statistical laws of continuous dry periods and effective flood forecast lead times and compared the effects of the negative exponential and asymptotic regression models in fitting the dry period distribution. We also calculated the floodwater volume over the FLWL in different situations and evaluated the flood control risks in a worst-case scenario. Statistical law of the dry period duration showed obvious negative index distribution characteristics; the relationship between increased water storage, dry period, and lead time can provide support for the operation decisions of the reservoir. The method did not increase the flood control risk under worst-case scenarios, and it can be used to effectively utilize reservoir floodwater resources.


10.29007/hjpt ◽  
2018 ◽  
Author(s):  
Vitaly Ilinich ◽  
Aleksey Perminov ◽  
Olga Rukhovich ◽  
Anna Naumova

The research dedicated to modeling of flood mitigation on the river basin with help of simulation of flood control by virtual small water reservoirs located in different places of the river system. Such problem decided with help of modeling of flood hydrograph and its routing through water reservoir on the base GIS. Reducing the degree of flooding should occur due to the limited hydraulic flow capacity of the water flow by dam spillways without flood control by people. The offered model is represented on the example of concrete river basin. Results have showed relevance of the model for flood mitigation on the river basin.


2021 ◽  
Author(s):  
◽  
Rebecca Boyle

<p>The inadequacy of current approaches to managing floodplain inhabitation was highlighted in the 2010-11 Queensland, northern New South Wales and Victorian floods; the most costly floods in Australia’s history. Despite technological advancements and the prevalence of flood mitigation infrastructure, floods continue to have widespread adverse physical, social, economic, and emotional impacts. This situation is mirrored internationally and is anticipated to worsen as scientists predict an increase in the severity and prevalence of natural disasters such as flooding. In response to this, management of floodplain inhabitation must shift from flood prevention to adaptation. Adaptation is a key term in ecological resilience, defined as the capacity of a system to adapt and persist in the face of disturbance (Holling 1976). Hendstra et al (2004) suggests that in the context of disaster-resilient cities, resilience can be defined as the “capacity to adapt to stress from hazards and the ability to recover quickly from their impacts” (Henstra, Kovacs, McBean, & Sweeting, 2004, p. 5). Analysis of ecosystems reveals that interdependence across scales, variety, redundancy, adaptability and feedback are the key resilience principles enabling the system to adapt and maintain stability during flooding. At present there is a sparsity of literature exploring spatial resilience approaches to improving floodplain inhabitation. Whilst amphibious approaches improve individual resilience, there is a lack of innovative solutions to improve community and city resilience to flooding. Resilience approaches have the potential to reduce safety concerns, financial losses and the emotional stress associated with residing on Australian floodplains. Such approaches acknowledge the interconnected nature of riverine floodplains and their inhabitants. However resilience principles need to be given a physical spatial function within specific social contexts. Architecture provides a platform to test new and retrofit adaptable approaches to promote a more suitable spatial relationship with the river. This thesis will take the theory and literature of resilience and apply it to a site-specific spatial context: Maitland. Maitland city is built on one of the most flood prone regions in New South Wales (Keys, 1999). Despite the Hunter Valley Flood Mitigation Scheme, which consists of 170 kilometers of levees and flood control structures, flooding continues to occur in and around Maitland. Regardless of these flood risks, Maitland City Council is proposing large scale residential development on the floodplain to encourage population increase. Maitland will be used as the primary case study for investigating the opportunities socio-spatial resilience interventions have for improving the longterm inhabitation of the floodplain. This thesis proposes a multi-scaled approach to examine flood hazard and exposure at the individual, community, city and regional scale. As spatial designers it is imperative that architects play a part in this explorative process</p>


2021 ◽  
Author(s):  
Alexander Viktorovich Syundyukov ◽  
Galiaskar Ismagilovich Khabibullin ◽  
Alexander Stanislavovich Trofimchuk ◽  
Denis Radikovich Shaikhatdarov ◽  
Damir Kambirovich Sagitov

Abstract This paper presents a method for predicting the development of Auto-HF (crack) in injection wells of the reservoir pressure maintenance system during the development of low-permeable reservoirs, in order to ensure the optimal front of oil displacement by water by regulating the bottom-hole pressure of injection wells based on the derived dependence of the half-length of the Auto-HF (crack).


Author(s):  
Hideo OSHIKAWA ◽  
Takaaki SUGIBAYASHI ◽  
Konan SAKAMOTO ◽  
Toshimitsu KOMATSU
Keyword(s):  

Water ◽  
2017 ◽  
Vol 9 (4) ◽  
pp. 237 ◽  
Author(s):  
Alvaro Sordo-Ward ◽  
Ivan Gabriel-Martin ◽  
Paola Bianucci ◽  
Luis Garrote
Keyword(s):  

2012 ◽  
Vol 198-199 ◽  
pp. 808-813
Author(s):  
Xiao Yu Song ◽  
Shou Jin Wang ◽  
Yong Hui Wang ◽  
Ming Zhao

China is a country prone to natural disasters, especially the flood disaster. In order to improve the villages and towns flood emergency management, through a series of methods such as information management and simulation, the establishment of emergency decision support using information technology to reduce losses caused by floods, the visualization technology is used in the virtual reconstruction model of floods, intuitive way to simulate the dynamic spread of the process of the flood disaster, in a safe and economical method to obtain the number of indicators of disaster-related decision. It provides a new method and ideas, and then it gives a reliable basis for the flood prevention and emergency management. The visualization analysis and decision is achieved for the villages and towns flood control, and it provides great support for the villages and towns flood mitigation and prevention. The result shows that the system is useful and meaningful in the town flood mitigation.


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