The whole country has fully entered the main flood season, and the continuous rainfall or heavy rainfall weather has increased, which is easy to cause floods, mudslides and other disasters. How to prevent floods scientifically? How can you save yourself in the event of a natural disaster? This knowledge is important!
What to do in the event of a flood?
Since the beginning of the flood season, many rivers have seen a significant flooding process, and some rivers in the rainstorm area have experienced floods above the warning level. In the event of a flood, how can I prevent and save myself?
1 Before the flood
Severe flooding usually occurs in rivers, coastal areas and low-lying areas. Living in these places, be extra cautious when there is a continuous rainstorm or heavy rainstorm.
The flood is usually preceded by some precursors, such as the sudden turbidity of the stream, the increase in flow velocity, and the rise in water level; From far and near, the sound of water roaring like a train; Abnormal reactions of animals and plants, etc.
Prepare communication equipment and collect items that can be used as signals, such as flashlights, whistles, mirrors, lighters, and colorful clothes.
2 When the flood hits
If you have enough time, you should follow the predetermined route and move to the hillside, high ground, etc. in an organized manner.
When the flood is too fast and it is too late to move, you can climb on rooftops, trees, and high walls to take temporary shelter and wait for rescue.
When surrounded by floodwater, use boats, wooden rafts, door panels, wooden beds, etc. as much as possible for water transfer.
When communication conditions are available, they can report the flood situation and trapped situation to the local government and flood control department and seek rescue; When there are no communication conditions, it can create fireworks, wave brightly colored clothes, or collectively call for help, and constantly send emergency help signals to the outside world.
Remember! Try not to swim alone to transfer; When you find that the high-voltage line tower is toppled or the power line is hanging low or broken, you should stay away from danger and do not touch or approach.
What should I do if I encounter urban waterlogging?
During the flood season, continuous rainfall or heavy rainfall increases, increasing the risk of urban waterlogging. How to avoid urban waterlogging?
1. Pay attention to early warning
Pay attention to receiving heavy rain and water warnings issued by meteorological and water authorities.
After receiving the early warning, low-lying communities, shopping malls, garages, etc. should take protective measures in advance, and can use door panels, sandbags, etc. to build dams.
2. Travel precautions
Pay attention to roadside flood control safety warning signs, try to get close to buildings, do not go near places with whirlpools, and prevent falling into dangerous areas such as deep wells and pits with missing manhole covers.
Do not linger in low-lying areas such as culverts, overpasses, underpasses, etc.
Stay away from electrical facilities, and if you find that high-voltage power towers or power poles are toppling, you should quickly stay away.
In case of waterlogging at home, the power supply and gas valve should be cut off in time.
3. Precautions for driving
Try not to take shelter from the rain in your car. If you are not familiar with the road conditions, you should pay close attention to flood warning signs and do not risk wading.
When wading in the water, turn on the headlights and double flashing lights, and pay attention to maintaining a large distance from the vehicle in front of you to prevent swells and water splashes from entering the engine and causing the vehicle to stall. When driving in deep water, you should hold the throttle steady, cross the water at a low speed and at a constant speed, and try not to stop, change gears, or make sharp turns halfway.
When the vehicle stalls in deep water, do not restart to prevent water ingress into the engine. When the water outside the car deepens further, it is necessary to escape in time.
4. Prepare waterlogging prevention supplies
You can always have some waterlogging prevention supplies at home, such as whistles, flashlights, life jackets and lifebuoys.
Always have an emergency hammer and hardware toolbox in your car, and when the vehicle is flooded, you can try to knock on the edges and corners of the window glass that are easy to break.
What to do if you encounter a mudslide?
Debris flow outbreaks are usually triggered by continuous rainfall and heavy rainfall, especially heavy rainfall, and generally occur in rainy summer and autumn, with the characteristics of strong suddenness, wide impact area and great destructive power. What are the signs before a mudslide? How to escape from a mudslide?
1 Disaster signs
The river water is abnormal. If the normal flow of water in the riverbed suddenly stops or the flood water suddenly increases, and there is more firewood, grass and trees, it means that a mudslide may have formed in the upper reaches of the river.
Abnormal mountain. There are a lot of white water currents in the mountain, and the slopes are deformed, bulging, cracked, and even tilted.
The sound is abnormal. If you hear a rustling sound on the mountain but can't find the source of the sound, it may be a loosening of the sand and rocks, a sign of an impending mudslide. If a ravine or valley roars or trembles, a mudslide is forming.
Other abnormalities. The land that had been dry for a long time began to accumulate water, the roads cracked, and the public telephone booths, trees, fences, etc. suddenly tilted; The rain does not stop or the water level of the stream drops rapidly as soon as the rain stops.
2 How to escape
Do not run down or up the ditch, but run up the slopes on both sides, out of the ditch and valley area.
Do not go up to trees to take shelter. In the event of a flash flood, you can climb a nearby tree or building to avoid danger, but it is not advisable to encounter a mudslide.
Do not evacuate to a place where the terrain is open and the trees grow sparsely, you can choose the nearest area with dense trees to escape, and dense trees can effectively block the progress of the mudslide.
Don't stay on the concave side of a low, flat curve as the water level is higher at the curve. Also don't hide under steep hillsides with rolling rocks and lots of accumulation.
Do not evacuate to areas with thick soil, but to rocky areas with hard geology, no gravel, and not easily washed away by rain.