On the afternoon of July 5, a breach occurred in the first-line embankment of Tuanzhou Dongting Lake in Huarong County, Yueyang City, Hunan, causing the area to be flooded. As of 12 o'clock on July 7, the two-way closure of Dongting Lake exceeded 75 meters. At present, the plugging work is in full swing.
The latest scene of the Dongting Lake breach blocking
There is a backflow of water
Seize the favorable conditions and make every effort to push forward the blockade of the dragon
At present, there are three favorable conditions for the closure of the Dongting Lake embankment:
The weather is fine;
The water potential at the site is relatively stable, and the materials can be effectively piled up near the breach to form an effective blocking;
There is less water in Dongting Lake.
Last night, there was a backflow of water at the breach of Dongting Lake, which partially relieved the pressure and created favorable conditions for the "second line of defense" to hold on to and rescue people.
More than 3,000 rescuers went to Dongting Lake to rescue the emergency
400 vehicles have been mobilized from various towns and villages to fill the blockage, and 10 dump barges and 40 flat barges have been urgently dispatched to fill the embankment with sand and pebbles to plug it.
As of 20 o'clock on the 6th, more than 3,000 rescue personnel of various types have been mobilized in provinces, cities and counties, including more than 1,400 national comprehensive fire rescue teams, more than 500 armed police forces, more than 500 militia members, and more than 650 social professional rescue forces.
100,000 square meters of stone and gravel have been raised, and the follow-up will be delivered in accordance with the progress of on-site rescue. In addition, 28 caissons were urgently dispatched from Shandong for plugging.
What about the affected people? Reporters visit resettlement sites
As of 6:00 p.m. on the 6th, 2,330 people had been resettled and transferred to the four resettlement sites, and the rest of the people chose to join their relatives and friends (volunteers were organized to arrange transfer to the masses).
It is reported that all resettlement sites in Huarong County have taken the "five haves" as the standard to effectively ensure the livelihood of the people affected by the disaster, that is, they have clothing, food, clean water to drink, safe shelter, and timely medical treatment for illness.
Why wait for the water level difference to be flat before plugging the breach?
How is the flood drained after blocking?
According to experts, when the water level difference is large, the water flow velocity at the breach will be significantly accelerated, and the water flow at a high flow rate can easily wash away the materials used to seal the breach. If there is not much difference in the water level between the two sides, the water flow will be relatively gentle, which is an excellent time to implement plugging operations.
What should be done with the floodwater after it has been blocked? It is understood that there are usually two types of drainage. First, when the water network is relatively abundant, the water can be discharged into the external main river channel in an artesian way; The second is to pump the internal stagnant water to the external river system for low-lying areas.
How to carry out the reinforcement of the "second line of defense"?
Compared with blocking the breach, the reinforcement of the "second line of defense" is particularly urgent. According to experts at the scene, the "second line of defense" is the Qiantuanjian embankment, which is about 14.3 kilometers long between Tuanzhou and Qiannan, which is about two kilometers away from the breach.
At present, more than 3,000 people, more than 50 construction vehicles, and 18 excavators have been deployed to clean the foundation and remove obstacles, lay color striped cloth, and fill sandbags, etc., to carry out reinforcement work on the "second line of defense".
Flooding
It can easily lead to water pollution
Triggering an outbreak of infectious diseases
How to prevent it properly?
Pay attention to your diet and water during floods
1. Do not directly drink river water, groundwater and other raw water. Try to choose well-packed, unopened bottled water and beverages. If bottled water is not available, make sure to boil the water before drinking.
2. Clean water sources should also be used for daily water such as cooking, gargling, and hand washing.
3. Do not eat food that has been soaked in floodwater, such food should be discarded immediately.
4. Avoid eating any raw food, including vegetables, and all foods should be cooked thoroughly before eating.
5. Do not use uncleaned water sources to clean food and tableware, and tableware (bowls, plates, spoons, chopsticks, etc.) should be cleaned regularly, boiled and disinfected.
After the flood, pay attention to the prevention of four types of infectious diseases
Intestinal infectious diseases
Intestinal infectious diseases such as cholera, infectious diarrhoea, bacillary dysentery, typhoid fever and hepatitis A are the most common diseases after floods. The biggest feature of intestinal infectious diseases is that "the disease enters from the mouth", and unclean water sources and contaminated or spoiled food will lead to the occurrence of intestinal infectious diseases.
Mosquito-borne infectious diseases
After heavy rainstorms and floods, a large number of mosquitoes can breed and mosquito-borne infectious diseases such as Japanese encephalitis, dengue fever and malaria can be transmitted. Pay attention to prevent mosquito bites, and turn over pots and cans in time to clean up stagnant water.
dermatosis
When the skin is soaked in water for a long time, the barrier function is destroyed, and fungi and bacteria can easily take advantage of it, which can easily cause various skin inflammations such as eczema, athlete's foot and even erysipelas.
People with a history of diabetes need to pay more attention to get out of the sewage environment in time, dry the skin, and prevent fungal and bacterial infections.
Natural disease
Leptospirosis, epidemic hemorrhagic fever and schistosomiasis are common, and their pathogens come from wild animals such as rats, as well as bacteria carried by domestic animals such as cattle and pigs.