How did the flash floods in Pengzhou, Sichuan come into being? How to save yourself when encountering sudden mountain torrents?

Lead: Recently, a sudden flash flood occurred in Longcaogou, Pengzhou, Sichuan, and some tourists had no time to evacuate. There have been deaths so far. Recently, a friend wanted to know how the flash floods in Pengzhou, Sichuan Province were formed. How to save yourself when encountering sudden mountain torrents? Let's have a look.

How did the flash floods in Pengzhou, Sichuan come into being?

1, terrain conditions:

The topographic features of mountain torrents and debris flows are generally middle and high mountains, with large relative height difference and steep valley slope. The surface layer is covered with skin graft and thick soil, and under the soil is broken rock cut by medium-deep faults and their derivative faults.

2. Forest cover conditions:

A large area is covered with forests and bamboo. In flood season, warm and humid air carries a lot of water to the forest area, which confronts the cold air with low temperature and high relative humidity in the forest area, which is easy to cause local heavy precipitation.

3. Water source conditions:

Water body is not only a part of mountain torrents and mudslides, but also a stimulating factor, mainly from rainfall.

How to save yourself when encountering sudden mountain torrents?

The six-character experience: the direction is right, run!

According to statistics, the number of casualties caused by flash floods can account for about 70% of the casualties caused by floods. But experts have explained that as long as the defense is proper, it can effectively reduce casualties. Then, how should you save yourself when you encounter a sudden flash flood?

Looking at the self-rescue methods of mountain torrents, even mudslides or other flood disasters, if you want to save yourself effectively, you must follow the following six words of experience: be accurate in direction and run fast!

First, in the direction. When encountering floods such as flash floods, we should first keep calm, don't panic, and don't "panic". As the saying goes, self-help is ineffective and equals suicide, especially in this kind of disaster! Generally speaking, mountain torrents rush from upstream to downstream and rush down from the top of the mountain. At this time, the survivors can't run up and down, but avoid the ravine and run up the ridge of the ravine.

Then, in terms of time. Mountain torrents may be a test of physical fitness, and running fast is the best guarantee for life. And generally speaking, there are signs before flash floods hit. For example, this time, tourists will be reminded to evacuate ashore in advance, so the awareness of safety and vigilance before the flash flood strikes is particularly important.

Under certain geographical conditions, only by knowing the harm and the seriousness of the consequences of mountain torrents from the deep heart in advance can we evacuate quickly when there are already dangerous signals. On these two levels, whether we can seize the time is the key to self-help and survival.

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It is reported that there will be thunderstorm, hail and other bad weather in Longcaogou Scenic Area in the evening. At present, several rescue teams have rushed to the scene, and hundreds of rescuers are still searching for trapped people along the river. In short, I hope that the number of casualties will not increase and all trapped people will be rescued safely. Flash floods suddenly occur, hoping to take a warning. My safety awareness is greater than the sky, so I should go!

What is a flash flood disaster?

Mountain torrents refer to the ups and downs of floods along rivers and gullies in mountainous areas and their accompanying landslides, collapses and mudslides caused by heavy rains, melting ice and snow or collapse of flood retaining facilities. Among them, flash floods caused by heavy rains are the most common.

Vulnerable areas: near gullies, low-lying places on both sides of streams, the intersection of double estuaries and the convex bank of river bends are most vulnerable to mountain torrents. In flash flood-prone areas, when local or upstream areas encounter short-term heavy precipitation, they are vulnerable to flash floods.

Features: large flow, short process, great harm and destruction.

What are the signs before the flash floods?

There are these obvious signs before the flash floods break out, and you should leave the scene quickly and decisively after discovering them.

Look: Is there a phenomenon that the well water is turbid and mud suddenly appears on the ground? Whether there are abnormal reactions of animals and plants, etc.

"Listen": Mountain torrents and mudslides start from the top of the ditch. If you hear rumbling, you should be vigilant and avoid in time.

How to prevent flash floods?

Never go to undeveloped scenic spots. "Wild scenic spots" have no basic security. Visitors should have more safety awareness, consciously stay away from risks, and can't have any luck.

During the flood season, we should pay more attention to the weather forecast and early warning information, try to avoid dangerous areas such as mountains and rivers, keep abreast of the weather changes, and make good preparations for family protection to ensure safety.

If you come to visit mountains and rivers, you should pay attention to the mountain and water potential, pay attention to the signs of mountain torrents and safely transfer the escape route, and leave the dangerous area as soon as possible.