Underground tanks built by Japan as a way to deal with floods

Underground tanks built by Japan as a way to deal with floods

 One of the infrastructure projects to overcome the flood is the Underground Tank. Quoted from "News Site", the following infrastructure projects in several countries to cope with flooding:

 1. Underground Tank.

 Underground tanks prepared by Japan to cope with flooding. The infrastructure project was dubbed G-CANS or stands for SHUTOKEN GAIKAKU HOSUIRO. In the underground drainage system built by Japan, it consists of five concrete pillars 65 meters high and 32 meters in radius connected by a 6.5 kilometer long tunnel. Rainwater can enter the sila and is accommodated in a final storage tank as high as 25.4 meters long, 177 meters wide and 78 meters wide, supported by 59 giant pillars and capable of pumping 200 tons of water per second to the port of Tokyo. 

2. The Dutch Floodgate. 

The Netherlands is an area 60 percent of the land is below sea level and the country is rarely flooded. The Netherlands experienced floods in 1953, even destroying 24 thousand houses and 40 thousand people being evacuated. Due to the condition of the Netherlands which is very prone to flooding, one of the efforts to overcome flooding, the Dutch government made Maeslankering, which is an arc-shaped door with a steel frame structure with a height of 22 meters and a length of 210 meters. The construction of Maeslankering is one of the strategies developed to protect the city from storm surges and ocean waves. Under normal circumstances, the Maeslankering door will open for ship passages, but when the water wave rises for about 3 meters, the Maeslankering door will automatically close. 

3. Delta Flume.

 Again, Dutch research creates new things to calm floods, a research by the Deltares Research Institute in the Netherlands makes Delta flume waterways, which are man-made waterways, 300 meters long, 9.5 meters deep and 5 meters wide. The delta flume is equipped with a gate generator capable of generating waves as high as 5 meters, which researchers can later test for wave height, wave pressure and the strength of the flow velocity and trajectory of the waves.

4. Anti-Flood Wall. 

Flood is a natural disaster that disturbs the community and also poses a threat to people living in low-lying areas. The flood control construction project carried out by IBS Technics succeeded in erecting a wall that is able to withstand enormous water pressure. This flood retaining wall has pillars placed on large concrete and Aluminum footings 5   meters long in a soil foundation. The wall is part of a Den Mas Land construction that stretches 70 kilometers along the coast and the flood-affected land.

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