scholarly journals One consideration about application of the rubble bed protection work concrete block to fishway works and flood control function

2012 ◽  
Vol 68 (7) ◽  
pp. III_227-III_237
Author(s):  
Takahide HONDA ◽  
Shuichi ASARI ◽  
Junichi AKINO ◽  
Koji TAKAZAWA ◽  
Kiyomitsu TAKASHIMA ◽  
...  
Keyword(s):  
Flood Control ◽  
Control Function ◽  
Concrete Block ◽  
Bed Protection

The Linhuaigang Main Dam Openings Vertical Interlocking Block Revetment Design and Calculation

2012 ◽  
Vol 212-213 ◽  
pp. 846-852
Author(s):  
Zhong Yang ◽  
Gui Sheng Wang
Keyword(s):  
Flood Control ◽  
Ground Deformation ◽  
Concrete Block ◽  
Earth Dam ◽  
High Wind ◽  
The Earth ◽  
Water Conservancy ◽  
Large Water ◽  
First Time

The design “non-rope opening vertical interlock block” is used in the main dam of Linhuaigang Project for the first time in China. The opening of the block can effectively reduce the uplift pressure induced by waves. The vertical interlock can make block interlock three- dimensionally so as to enhance the integrity of the block and improve the anti-wave performance. The design can not only improve the protection of the main dam slope under long blowing distance and high wind and waves, but also save the use of stone and construction investment as well as protect the environment. Openings vertical interlock concrete block between the rigid in-situ concrete slope and the flexible dry stone slope, not only avoid the shortcomings of in-situ concrete slope suited to soft ground deformation, but also resist the larger storms owing to the better integrity than dry stone pitching ,from the interlocked effect between the blocks. Compared with the entity block, opening vertical interlock block thickness is reduced greatly. The earth dam project of Lin Huai Gang flood control project applied openings vertical interlock block successfully in water conservancy projects .The project has the pioneering position in the use in the wave elements of reservoirs, lakes and the other large water conservancy revetment constructions.

Study on Hydraulic Characteristics of Interlocking Concrete Blocks with Ecological Flood-Control Function

2012 ◽  
Vol 518-523 ◽  
pp. 4552-4556
Author(s):  
Hai Jing Zhao ◽  
Dan Xun Li ◽  
Xing Kui Wang
Keyword(s):  
Flood Control ◽  
Mechanical Stability ◽  
Control Function ◽  
Low Cost ◽  
Hydraulic Characteristics ◽  
Simulation Research ◽  
Surface Protection ◽  
Concrete Blocks ◽  
Flood Period ◽  
New Type

Through simulation research on hydraulic characteristics of precast interlocking concrete blocks, the stress condition, overall stability, the effect of filling gravels into the holes of the blocks in the water flow during the flood period and the resistance parameters of the blocks were studied, a comprehensive analysis on the mechanical stability and the scour-resisting characteristics of the blocks was made, and then the requirement and the safety degree of the gravel filling were given. The experiment shows that compared with the surface protection of the conventional dyke projects, besides convenience for manufacture at low cost, this new type of protective revetment has such merits as higher anti-shear stress, better stability and permeability as well as improving ecological environment in river course.

scholarly journals Application of a tank model to assess the flood-control function of a terraced paddy field

2014 ◽  
Vol 59 (5) ◽  
pp. 1020-1031 ◽  
Author(s):  
Shih-Kai Chen ◽  
Rong-Song Chen ◽  
Tzung-Ying Yang
Keyword(s):  
Paddy Field ◽  
Flood Control ◽  
Control Function ◽  
Tank Model ◽  
Terraced Paddy Field

scholarly journals STUDY ON THE PERFORMANCE OF WONOGIRI RESERVOIR AS FLOOD CONTROL STRUCTURE

2015 ◽  
Vol 1 (3) ◽  
pp. 85
Author(s):  
Alexander Armin Nugroho
Keyword(s):  
Water Level ◽  
Flood Control ◽  
Control Function ◽  
Flood Routing ◽  
Control Limit ◽  
Reservoir Water ◽  
Reservoir Water Level ◽  
Catchment Areas ◽  
Flood Hydrograph ◽  
Reservoir Inflow

The Wonogiri reservoir was built with a primary function as flood control, especially in areas prone to flooding along the Bengawan Solo River. To find out the performance of the Wonogiri reservoir in flood control of Bengawan Solo, a study was conducted on flood hydrograph characteristics of the reservoir inflow by considering the contribution inflow from all sub-watersheds in the reservoir catchment area, at the end of December 2007. Calculation analysis flood hydrograph of Wonogiri Reservoir inflow is done with the calibration of Wuryantoro and Keduang sub-watersheds. Results of the calibration were then used reference to simulate flood hydrograph inflow in each sub-watershed catchment areas. Flood routing in the reservoir was done with the assumption that the inflow of the reservoir was left to face up a height of water in the reservoir 135.3 m (the lower flood control limit) and 138.3 m (the upper flood control limit) and then the spillway gates full-opening. Results of this research indicated that the maximum discharge inflow into the reservoir on the event of Wonogiri flood at the end of December 2007 was ranged from 3,331 to 4,993 m3/s; and it was occurred on December 26, 2007 at between 04:00 - 06:00 am. The most dominant flood hydrograph contribution into the reservoir was derived from Keduang sub-watershed. The flood in the reservoir was simulated as that the spillway gates were closed until water level of reservoir reached the minimum height of 135.3 m and 138.3 m and only until then the spillway gates full-opening. The reservoir water level reached 135.47 m on December 26, 2007 at 6:00 am and outflow was generated when the gates opened to reach 550 m3/s and then increased up to 642 m3/s at 14:00 after then it gradually decreases. The water level simulation was unable to reach 138.3 m because up to December 27, 2007 at 23:00 the water level reservoir reaches only 136.44 m. The Wonogiri reservoir flood control function still can run well and able to reduce the peak flood of 85%.

scholarly journals Evaluation of the Effect of Hamao Detention Pond on Excess Runoff from the Abukuma River in 2019 and Simple Remodeling of the Pond to Increase Its Flood Control Function

2022 ◽  
Vol 12 (2) ◽  
pp. 729
Author(s):  
Shouta Harada ◽  
Tadaharu Ishikawa
Keyword(s):  
Flood Control ◽  
Quantitative Measurement ◽  
Control Function ◽  
Measurement Data ◽  
Flow Simulation ◽  
Mitigation Measures ◽  
Excess Water ◽  
Detention Pond ◽  
Numerical Flow Simulation ◽  
Water Volumes

Due to the recent increase in the intensity of rainstorms, the Japanese government has announced a new policy of flexible flood mitigation measures that presupposes the release of water volumes exceeding the river channel capacity onto floodplains. However, due to the limited amount of quantitative measurement data on excess runoff, it will take time to formulate planning standards for remodeling and newly constructing flood control facilities reasonable enough under current budgetary constraints. In this study, the capacity shortage of a flood detention pond was evaluated against the excess runoff from a severe 2019 flood event by combining the fragmentary measurement data with a numerical flow simulation. Although the numerical model was a rather simple one commonly used for rough estimation of inundation areas in Japan, the results were overall consistent with the observations. Next, in accordance with the new policy, an inexpensive remodeling of the detention basin, which was designed according to conventional standards, was simulated; the upstream side of the surrounding embankment was removed so that excess water flowed up onto the floodplain gradually. Numerical experiments using the simple model indicated that the proposed remodeling increased the effectiveness of flood control remarkably, even for floods greater than the 2019 flood, without much inundation damage to upstream villages.

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