The dangers of rainstorms: when you encounter a rainstorm
The disaster brought by a rainstorm seems to be far beyond everyone's imagination, and the loss of life is even more sad. Therefore, everyone must master the above basic knowledge of safe self-rescue and improve the ability to avoid emergencies. Let me introduce to you what hazards a rainstorm will bring? How should we respond and save ourselves?
1. Lightning strike
Lightning strike is a common rainstorm weather disaster, which often occurs in places with a lot of outdoor activities. It is not easy to be taken seriously by people, but its damage is huge. How to avoid outdoor lightning strikes?
① When encountering a sudden thunderstorm, you can squat down, lower your height, and bring your feet together at the same time to reduce the harm caused by step voltage.
Don't take shelter from the rain under a big tree.
③ Do not stay near water bodies (rivers, rivers, lakes, seas, ponds, canals, etc.), depressions, mountain tops, and rooftops.
④ Do not hold metal objects and make calls to your cell phone.
Do not touch or get close to lightning-proof grounding wires, water pipes, and electrical grounding wires.
How to prevent indoor lightning strikes?
① During a thunderstorm, the first thing to do is to close the doors and windows and leave the metal water pipes entering the house and the sewer pipes connected to the roof.
② Try not to make or answer calls, or use the phone to surf the Internet. Unplug the power supply and metal wires such as phone lines and TV antennas that may introduce lightning strikes. The safe and scientific way is to install a lightning arrester on the power cord and ground it well.
③ Do not use solar water heaters for bathing during thunderstorms.
2. Electric shock
Thunderstorms may cause some high-voltage or low-voltage power supply lines to be disconnected, and may also cause short circuits and discharges in power supply equipment. If you travel or stay outdoors in this weather, you need to pay attention to prevent electric shock.
Do not approach overhead power lines and transformers, and do not shelter from rain under overhead transformers.
Do not stay or take shelter under tall trees or large billboards that are close to power lines.
③ When walking outdoors, try to avoid cable-stayed wires on utility poles.
④ After the rainstorm, the road surface in some places is likely to be flooded. At this time, it is best not to wade through the water. If you have to wade through the water, you must always observe whether there are any power lines broken in the water near the road section you pass through.
If you find that the power supply line is broken in the stagnant water and the water is electrified, do not deal with it yourself. You should immediately mark the surroundings to remind other pedestrians not to approach, and call the power supply department in time to notify the emergency treatment.
Once someone is found to have been electrocuted in the water, do not rush to assist them. Emergency measures must be taken before they can be rescued.
If the power line happens to fall on the ground very close to you, then don't panic first, let alone run away. At this time, you should jump away from the scene with one leg, otherwise you may be electrocuted by the step voltage.
3. Drowning
Heavy rains can cause large areas of water accumulation and flash floods, so how to deal with various drowning situations?
If not very good at swimming
When drowning occurs, when you are not familiar with water, you can take the self-rescue method: in addition to calling for help, take a supine position with your head back so that your nose can be exposed to the water to breathe. Exhale shallowly and inhale deeply. Don't panic at this time, don't lift your arms and flutter, and make your body sink faster.
If you get trapped in a car in the water
① Unfasten the seat belt, unlock the door safety lock, immediately fully open the window, calm down, and take a deep breath. After the vehicle enters the water, the water will quickly rush into the car. At this time, the water pressure is very high, and it is difficult for the people in the car to open the door and escape. It is only possible to open the door when the car is full of water and the pressure on both sides of the door is equal.
② If you don't open the window in time, you can break the window glass by breaking the window hammer, so that the water can enter the car as soon as possible to increase the chance of escape. In addition, be careful that kicking, holding the key, smashing with a mobile phone, etc. cannot effectively break the glass.
③ After opening the door, swim aside as soon as possible.
If you cramp while escaping
If a cramp occurs in the water, don't panic. Be sure to stay calm, stop swimming, float on your back, and take different methods to save yourself according to different parts. Make your body lie on your back, hold the toes of the cramped leg with your hands, pull up hard to straighten the cramped leg, and tread water with your other leg and stroke with your other hand to help your body float.
4. Flash floods
Heavy rains can also cause flash floods, in which case the following points should be taken into account.
① Stay calm and move up or higher as soon as possible.
Do not run in the direction of the floodway, but quickly dodge to both sides.
③ Do not cross the river easily.
④ If you are trapped in a mountain by a mountain flood, you should promptly contact the relevant local departments or send a distress signal to seek rescue.
