Xie Hong, a researcher at the Chinese Academy of Sciences: It is extremely difficult to escape the pole time in the prediction time of Shanhong.

Cover reporter Chen Yanzhang Intern Wang Ding

On August 13th, a mountain flood in Longcaogou, Pengzhou, Sichuan caused casualties, causing people to pay attention to the safety of the mountains. On August 15, the cover reporter talked Xie Hong, a researcher at the Institute of Mountain Disaster and Environment of the Chinese Academy of Sciences. He has been engaged in mountain disaster research for nearly 40 years.

Xie Hong said that every time in the hot period of weather, people like to go to the mountains to avoid summer heat and expose continuous high temperatures. The risks in the flood season have never received the due attention. "Many times still show people's lack of awe of nature, and water can carry boats. The key is to have a sense of prevention, especially in the mountainous area. Exemptation of the safe area, "Xie Hong said.

The steep gap between the ravine is large and the potential energy is large

Xie Hong emphasized: "Our country belongs to the monsoon climate area, and the rain and heat are the same period. The rainy season and the season with high temperatures are uniform, so the period from May to October each year is both a high temperature period and a period of rich rainfall. There is no scientific basis to judge safety with the temperature conditions. "

He said that taking Chengdu as an example, about 70%of the precipitation of about 70%of the year will be reduced within this six months, let alone mountain areas. Considering the degree of vegetation and terrain factors, its summer rainfall will be greater. 80%or even 90%of precipitation are concentrated in these months. In addition, the most concentrated period of rainfall is July and August. In accordance with the experience of many years of flood prevention, my country will summarize the focus of flood prevention periods as "seven or eight". Based on the specific situation of Chengdu and even Sichuan, Xie Hong believes that "'Seven Eight Eight and Eight" is a critical time period after concentrated flood prevention. In fact, a large amount of precipitation time will generally be extended. During the first time. "

Xie Hong takes Longcougou as an example. The maximum altitude can reach more than 3,000 meters. Everyone has a play area of ​​more than 1,200 meters to about 1,200 meters. The relatively high gap generated by a relatively high level is also difficult to estimate. Under the conditions of the upstream material potential span slopes, the energy conversion process of completing the energy conversion process of scouring capacity, impact, and handling capacity through rainfall or mudslides into kinetic energy is transformed through rainfall or mudslides. Moreover, it is not pure water after the outbreak of the flood. It drives steep ditch bed stones to roll with the floods. At the same time, it is mixed with a large amount of sediment, which is very impact.

"It can only be listened to the sky by the flood, and the possibility of surviving is very small. To avoid the life threat caused by various secondary disasters, you can only start from the source and the flood season is less to move in the mountains." Xie Hong reminded, " We must cherish our lives ourselves. "

Mountain flood prediction time is extremely short escape pole

Xie Hong said that the changes in nature are always beyond people's imagination and cannot be used with common sense. Usually watching a small ravine where there is no water flow, as long as it rains, and the rain is slightly larger, there may be a threat of floods. The ditch bed in the mountains of Sichuan is rushing. After the rain, the water is short, and the flood peak can soon be formed.

"There are many wild scenic spots like this tragedy. People have passed on their mouths, and there are more people who go. Over time, they feel that there is no danger. Human limitation cannot be a warning logo in each ditch in the ravine. Go to the water. In this case, the tourist's own awareness of prevention is particularly important. It is easy to make a big mistake without paying attention to potential hidden dangers. "Xie Hong said.

Xie Hong also pointed out for the video content that in the face of emergency situations, sheltering is not as easy as us to take it for granted: "After seeing the pictures of Pengzhou floods, many people stand directly in the middle of the river. Even in the case of 8 meters and 10 meters, it is not easy to escape from time to time. So it is not easy to escape in time. Therefore, avoiding such places in advance and stifling risks in the cradle is particularly important. "

"When you see that the water is muddy, the flood is very close to you, it may only be a few seconds. Unless you are too good, for the average person, you are slightly older and your body is slightly weak, and you can't run the floods at all. Xie Hong said in the interview.

So, how to reduce the probability of mistakenly entering wild attractions during travel?

Xie Hong said that first of all, you must brighten the professionalism of the tour group to identify the tour group. The warning announcement is to avoid the selectivity of "ignorance". Xie Hong added: "At least I saw the local publicity on the Internet last year, indicating that that place is not a scenic spot, not an open area."

Many people lack enough awe of water

Xie Hong said that there is an old saying in China called "water can carry boats and can also cover the boat." If the disaster is ignorant and fearless before the arrival of the disaster, it feels like a big deal, and when it comes to its head, it is easy to suffer.

During the interview, Xie Hong told reporters: "Some people are fun, and some people have no concept of sudden disasters. There is not much danger. Like this tourist, activities such as camps, mahjong, etc. are arranged in the middle of the river, and there is indeed no possibility of mountain floods as one thing.

Xie Hong said that generally speaking, after the danger of the hydrological monitoring department or environmental departments, corresponding measures are taken, such as SMS and grassroots cadres to remind local residents. At the same timeKnow how to avoid harm and maintain your own safety.In fact, it is generally the main point of view that tourists lack security education."Geological disaster prediction is a technical work. There is a certain error difficulty to dissolve, and it cannot be fully dependent. The gentleman does not set a critical wall. The key is to have a sense of prevention, especially in the sensitive area of mountainous areas.All need to be evacuated to the safe area. "Xie Hong said.

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