scholarly journals A Parametric Flood Control Method for Dams with Gate-Controlled Spillways

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

scholarly journals Floodwater Utilization Based on Reservoir Pre-Release Strategy Considering the Worst-Case Scenario

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 892 ◽  
Author(s):  
Lijuan Hua ◽  
Xinyu Wan ◽  
Xianhui Wang ◽  
Fangzheng Zhao ◽  
Ping’an Zhong ◽  
...  
Keyword(s):  
Lead Time ◽  
Flood Control ◽  
Control Method ◽  
Dynamic Control ◽  
Dry Period ◽  
Case Scenario ◽  
Release Process ◽  
Worst Case ◽  
Worst Case Scenario ◽  
Huai River

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.

Flood Control Method in Fields with Hard-To-Recover Reserves

2021 ◽  
Author(s):  
Alexander Viktorovich Syundyukov ◽  
Galiaskar Ismagilovich Khabibullin ◽  
Alexander Stanislavovich Trofimchuk ◽  
Denis Radikovich Shaikhatdarov ◽  
Damir Kambirovich Sagitov
Keyword(s):  
Flood Control ◽  
Control Method ◽  
Reservoir Pressure ◽  
Injection Wells ◽  
Hole Pressure ◽  
Oil Displacement ◽  
Maintenance System ◽  
Bottom Hole Pressure ◽  
Bottom Hole ◽  
Half Length

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).

OPTIMIZATION OF NEW FLOOD CONTROL METHOD USING MULTIPLE DRY DAMS CONSTRUCTED IN A SERIES

2020 ◽  
Vol 76 (2) ◽  
pp. I_475-I_480
Author(s):  
Hideo OSHIKAWA ◽  
Takaaki SUGIBAYASHI ◽  
Konan SAKAMOTO ◽  
Toshimitsu KOMATSU
Keyword(s):  
Flood Control ◽  
Control Method

scholarly journals Study of Flood Control Capability and Advanced Application of Multiple Dams Constructed in Series

2013 ◽  
Vol 8 (3) ◽  
pp. 447-455 ◽  
Author(s):  
Hideo Oshikawa ◽  
◽  
Yuka Mito ◽  
Toshimitsu Komatsu ◽  
Keyword(s):  
Flood Control ◽  
Large Scale ◽  
Control Method ◽  
Upstream Region ◽  
Small Scale ◽  
Water Utilization ◽  
In Series ◽  
New Type ◽  
Cascade Method ◽  
Cascade Type

The new concept for flood control called ‘Cascade’ method which permits dams to overflow around an upstream region with a sequence of dams constructed in a river is proposed. Multiple small scale dry dams should be constructed in series instead of a large scale dam in order to prevent flood disaster and preserve the natural environment. Recently a flood control dam with a bottom outlet hole as its regular spillway, known as ‘dry dam’, has been reviewed, planned and built in some sites in Japan. Under a condition of a common reservoir capacity, the Cascade type flood control permitting upstream dams to overflow except for the most downstream dam in a river is compared with a conventional one not to overflow each dam in a numerical simulation. As a result, it is made clear that the Cascade method using multiple dry dams is much more effective than the conventional one. In this connection, the Cascade type flood control method permitting upstream dams to overflow from emergency spillways except for the most downstream dam can be applied to normal storage dams with slide gates operated conventionally. Therefore, it could become an effective adaptation method for the global warming problem since it is performed by only changing how to operate slide gates in existing storage dams constructed in series. In addition, we also propose a new type of dry dam that has a closable and openable gate for its regular spillway primarily to retain the water for the water utilization. The new type of dry dam, which should be constructed in the upper reach away from the existing downstream storage dam needing still more its capacity for water utilization, ensures the amount of water available for the use by closing the regular spillway after the new dry dam is at full capacity, and the flood control capacity of the dams including the new dry dam is stronger than that of the normal dams owing to the storage function with the new dry dam. The new dry dams may improve the water utilization, the flood control, and environmentfriendliness under the current condition in Thailand damaged by the severe flood in 2011.

Effective Flood Control Method in River Downstream Affected by Tidal Effect Using Optimal Operation of Estuary Barrage

2021 ◽  
Vol 147 (6) ◽  
pp. 04021030
Author(s):  
Yong-Gun Kim ◽  
Myong-Bong Jo ◽  
Pyol Kim ◽  
Song-Nam Oh ◽  
Jong-Hye Choe ◽  
...  
Keyword(s):  
Flood Control ◽  
Control Method ◽  
Optimal Operation ◽  
Tidal Effect

A distributed access control method for wireless LANs in shadowing environments

2001 ◽  
Vol 84 (9) ◽  
pp. 16-26
Author(s):  
Tadao Saito ◽  
Hitoshi Aida ◽  
Terumasa Aoki ◽  
Soichiro Hidaka ◽  
Tredej Toranawigtrai ◽  
...  
Keyword(s):  
Access Control ◽  
Control Method ◽  
Wireless Lans ◽  
Distributed Access Control
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