People 'constitutional' against flooding for Hanoi and Ho Chi Minh City

Instead of dredging canals, elevating the road surface, building a large drainage canal system . KS Nguyen Thanh Tuan Kiet proposed 2 big cities: Hanoi and Ho Chi Minh City, so it built a tunnel containing rainwater to fight flooding.

Currently, the situation of flooding due to heavy rain and high tide in roads in Hanoi and Ho Chi Minh City is very serious. In Hanoi, every heavy rain, dozens of routes were submerged in the water. Many roads in the country flooded 0.5 meters deep, causing difficulties for traffic participants.

Compared to Hanoi, Ho Chi Minh City is less prone to rain, but it has to face ' heavy flooding ' every time the tide rises. The heavy rain in the evening of November 7 in Ho Chi Minh City, just as the tide rose, drowned many roads of the city, traffic on roads was almost completely paralyzed.

According to many experts in the construction field, the expansion of the canal, drainage and sewerage for flood control takes time and cost a lot of construction, compensation and clearance costs. The dredging of canals and larger drains cannot solve the problem of drainage when heavy rains because the terrain in Hanoi and Ho Chi Minh City has sunken areas, lower than the level of rivers and streams (type 2). If the bottle is connected, there is no difference in height.

After every heavy rain, many streets of Hanoi and Ho Chi Minh City flooded. (Photo: Internet)

Furthermore, the distance from the center and the area flooded to the outside of the river and sea drainage areas is too far, leading to weak flow, the shortest possible time of drainage, resulting in flooding. Local flooding.

According to some experts, the solutions that the two cities are applying are ' elevating the road base ', which only causes water to flow from one place to another. As a citizen, before the urgent situation of ' rain is flooding ' in 2 cities, engineer Nguyen Thanh Tuan Kiet, General Director of Viet Cuong Automation Machinery Manufacturing Company (HCMC) proposed idea of ​​building underground water tank to prevent flooding.

According to KS Kiet, to fight flooding, Hanoi and Ho Chi Minh City should build underground water tanks with tank walls higher than the road surface to store rainwater. Calculate storage capacity and reasonable quantities to accommodate the volume of water above (equivalent to the amount of rainwater can flood the road at a high level of 400-500mm and road surface area). Use large capacity pumping stations to pump flooded water into the reservoir. After the rain is over, it will regulate the discharge of water slowly in the water tank to the drainage system to the canal, canal .

When applying this solution, according to KS Kiet, in addition to actively regulating the amount of flooded water to rivers and canals after the rain aimed at flooding roads, we can use this amount of water for the system. Local fire protection in residential areas is very useful, or water supply for watering plants of green parks, watering greenery along the roads. So there will not be wasted water resources.

Model of rainwater cellar of Kiet Hotel. (Photo: Tung Nguyen)

Regarding the location of underground rainwater tank construction, Kiet hotel proposed to build at bus stations, green parks, stadiums, entertainment areas, squares, university campuses, high schools. , sidewalks, and even small roads (no trucks are allowed) as underground tunnels, vehicles still circulate above normal. According to Kiet Hotel because this is a public land fund, when construction will not cost compensation and site clearance.

The exploitation and use of water storage tanks, proposed by Kiet KS, after the construction is completed and put into operation, the responsibility to preserve, preserve and operate can be assigned to the green park company.

In addition, Kiet said that the two cities could bid for a billboard (beautiful electronic billboard, economic information, news reports and advertisements .) around the stadiums. , bus station . on those underground water tanks. Or for businesses to invest and get the right to exploit on that area . will collect a large amount of money, enough to cover the initial construction and maintenance of the pump system. Or collect money from the park park company for water use.

According to KS Kiet, in fact, in two cities, there are only a few places that are seriously and regularly flooded with rainwater, so if using a solution to make a big sewer, open the flow, the water will flow from one place to another. other places cause local flooding.

Awarded to VnMedia 12/11 morning, Kiet KS is confident, now the traditional flood protection solutions are not effective. If these two cities adopt this rainwater tunnel solution, they will definitely solve the flooding problem in the two big cities. However, the solution still needs the support of the city drainage system.

' I am just a machine engineer, not specialized in drainage, environment but stemming from real life, I also boldly contributed ideas to improve the current flooding situation. I hope the experts and people contribute more ideas to find the best anti-flood measures , 'Kiet said.