How do students prevent natural disasters?

It is difficult for students to prevent natural disasters. Only disasters such as volcanic eruption can predict and evacuate people in advance, such as earthquakes, tsunamis and mudslides, which are impossible or difficult to predict in advance. There is no other way but to be familiar with the signs before various natural disasters, but it is very important to know more about various disasters and correctly judge how to escape in times of crisis.

How to prevent natural disasters? Section 5 Debris Flow

Debris flow is a geological process between flowing water and landslide. Typical debris flow consists of thick mud suspended with coarse solid debris, and is rich in silt and clay. Under the appropriate terrain conditions, a large number of water bodies soak the solid accumulation materials in the hillside or gully bed, which reduces its stability, and the solid accumulation materials filled with water move under their own gravity, forming mudslides. Debris flow is a disastrous geological phenomenon. Debris flows often erupt suddenly. It is fierce, can carry huge stones, and advance at high speed, with strong energy and extremely destructive power. Everything was destroyed wherever the mudslide went. The picture on the right shows the damage caused by debris flow.

Debris flow is a common natural disaster in China mountainous area. Most of them occur in Xiaoxigou in mountainous areas. It is a solid-liquid two-phase fluid filled with a lot of sand and gravel, which is in a viscous laminar or sparse turbulent state. It is the comprehensive result of natural factors such as geology, geomorphology, hydrology, meteorology, soil and vegetation, and it is the product of the deterioration of mountain environment. China is a mountainous country with vast mountainous areas and monsoon climate zones. In addition, strong neotectonic movement, developed fault structures, frequent seismic activity and complex terrain make China the country with the most developed, most widely distributed, most numerous and most serious debris flow in the world. Therefore, China has carried out a lot of research work on debris flow, aiming to guide the prevention and control of debris flow in China into the track of contemporary science, and to turn harm into benefit in the practice of debris flow prevention and control, and to integrate social benefits and ecological benefits.

Section 8 Flood

Since ancient times, flood has been a natural disaster that has plagued the development of human society. The first page of China's written records is a glorious picture of the working people's struggle against floods-Dayu's flood control. Up to now, flood is still the disaster that has the greatest impact on human beings. The Yangtze River flood in China has brought huge losses to the middle and lower reaches, seriously damaging the healthy development of social economy.

Therefore, it is particularly important to study the causes, types, characteristics and prevention countermeasures of flood disasters.

Cause of flood

Flood disaster has dual attributes, both natural and socio-economic attributes. Its formation must meet two conditions: first, natural conditions: flood is the direct cause of flood disaster. Only when the natural variation intensity of flood reaches a certain standard will disasters occur. The main influencing factors are geographical location, climatic conditions and topography. Second, socio-economic conditions: only when there are human activities will there be floods and disasters. The areas most threatened by floods are usually

Types of floods

Floods can be divided into river floods, lake floods and storm floods. Among them, river floods can be divided into the following types according to their causes: rainstorm floods, mountain torrents, snowmelt floods, ice floods and dam-break floods. The most influential and common flood is river flood, especially the long-term rainstorm in the basin, which leads to high river water level and dam failure, the greatest damage to regional development and even a large number of deaths.

Flood and waterlogging characteristics

From the mechanism of flood disaster, flood has obvious seasonality, regionality and repeatability. For example, almost all floods in the middle and lower reaches of the Yangtze River in China occur in summer, and the causes are basically the same, but they have different characteristics in the Yellow River basin.

At the same time, flood disasters are very destructive and universal. Flood disaster is not only harmful to society, but also seriously harms adjacent river basins and causes changes in water system. In addition, flood disasters may occur in different areas, including mountainous areas, coastal areas, river estuaries, middle and lower reaches of rivers and areas around glaciers.

However, floods are still defensive. It is impossible for mankind to completely eradicate floods, but through various efforts, the impact of disasters can be minimized as much as possible.

Flood prevention and control

The prevention and control of flood disaster includes two aspects: on the one hand, it is to reduce the possibility of flood disaster, on the other hand, it is to minimize the loss of flood disaster as much as possible. Strengthening dike construction, river regulation and reservoir engineering construction are direct measures to avoid flood disasters, and long-term and lasting implementation of soil and water conservation can fundamentally reduce the probability of flood disasters. Scientific flood and weather forecast and reasonable flood storage and detention area planning can reduce the loss of flood disasters. Establishing an emergency system for flood control and emergency rescue is the last measure to reduce disaster losses.

What should we do in the face of natural disasters?

Last winter, a sudden snowstorm deeply touched us. Now, an earthquake without warning has shaken more than half of China and affected the whole of China. In the face of natural disasters, we humans are so small and our defenses are so useless, especially in the face of the rare extreme climate of ice and snow and such a powerful earthquake in the south.

So, what should we do in the face of these sudden natural disasters? What should we do?

In the face of these emergencies, don't panic at first, try to stay calm and understand your situation. Then, make a decisive decision, try to protect your life safety, and give up if necessary. Let yourself know your situation as soon as possible and adjust your behavior adaptively.

At the same time, in order to reduce the invasion of natural disasters, society needs us to make some contributions. "Everyone contributes, and unity is strength" can not only protect the ego, but also benefit the ego. Summing up successful experience, in the face of natural disasters, everyone should try to do it according to the following ten words:

1. learning: learning all kinds of disasters and disaster reduction knowledge.

2. Listen: Always listen to the disaster information released by the state or local authorities, and don't listen to rumors.

3. Preparation: According to the development of disasters, individuals and families should be prepared for various actions and materials, and protect disaster monitoring and protection facilities.

4. Inspection: Pay attention to observe and study the natural variation around, and if conditions permit, you can also conduct some tests and studies.

Report: Don't panic once you find abnormal natural phenomena. However, it needs to be reported to the relevant departments as soon as possible, and the professional departments should judge.

6. Resistance: Once a disaster happens, we must first carry forward the fearless spirit, call on the masses and organize everyone and individuals to defend themselves.

7. Avoid disasters: Before disasters happen, make arrangements for individuals and families to avoid disasters and choose safe places to avoid disasters. Once disasters happen, individuals and organizations will avoid disasters.

8. Cut-off: In the disaster relief operation, the disaster sources such as electricity, fire and gas that may lead to secondary disasters should be cut off first.

9. Rescue: We should learn some knowledge of medical rescue, prepare some necessary medicines, and save ourselves and treat others in time when the medical system fails to work normally in the event of a disaster.

10. Insurance: In order to reduce the economic losses of individuals and families, we should make full use of social disaster prevention insurance in addition to personal protection. It is believed that with the improvement of the national disaster reduction system, the improvement of disaster reduction capacity and the efforts of every member of the whole people, the disaster losses will be greatly reduced.

Fortunately, we have a caring person, and we have caught up with an extremely developed information technology network era. The two complement each other, bringing hope and strength to the people in the disaster area, timely assistance to the whole people, and enhancing the determination and confidence of the people in the disaster area to resist natural disasters.

Although we can't control natural disasters, we have reason to believe that under the leadership of the State Council of the CPC Central Committee, as long as the people of the whole country are United, we have the confidence and ability to overcome no matter how big the natural disasters are, and we also have the means and strength to overcome no matter how big the difficulties are, and we will definitely win the final victory of this particularly serious earthquake disaster!

How should human beings prevent natural disasters? Protect the environment and learn more knowledge.

How to prevent natural disasters such as fire and flood? Severe floods usually occur along rivers, lakes and streams and in low-lying areas. How to save yourself in the sudden flood? First, if it's too late to move, don't panic. You can move to a high place (such as a solid roof or a big tree) and wait for rescuers to save you. Second, in order to prevent floods from flooding into the house, we must first plug all the gaps under the gate. It is best to put sandbags on the outside of the threshold. Bags can be filled with sacks, straw bags, cloth bags and plastic bags, and sand, dirt and gravel can be filled inside. If the flood water is expected to rise again, sandbags should also be piled outside the bottom window sill. If the flood doesn't rise, you should reserve some food, drinking water, warm clothes and appliances for boiling water upstairs. If the flood is serious and the water level continues to rise, you must make a raft to escape. Anything floating in the water, such as bed boards, boxes, cabinets and door panels, can be used to make rafts. If you can't find the rope at the moment, you can tear the sheets, sheets, etc. On the contrary Before climbing the raft, be sure to try whether the raft can float. Collecting food, signal equipment (such as whistles, flashlights, flags, bright sheets) and paddles are essential. Eat some high-calorie foods, such as chocolate, sugar, sweet cakes, etc., before going out to float. Drink some hot drinks to strengthen your strength. Before leaving home, turn off the gas valve, power switch, etc. If time permits, roll up the valuables with a blanket and put them in the cupboard upstairs. Inconvenient valuables are buried or placed in high places after waterproof, and tickets, jewelry and other items can be sewn into clothes; Prepare medicines, kindling and other items; Keep all kinds of communication facilities that can still be used You'd better close the door when you go out, so as not to follow Shui Piao. There are many measures to prevent fire. Students should first start with the little things in daily life:

Please accept it, thank you!

What are the natural and man-made disasters? How to prevent it? "Natural disaster" is an abnormal phenomenon in the nature on which human beings depend, and the harm caused by natural disasters to human society is often shocking. Among them are earthquakes, volcanic eruptions, mudslides, tsunamis, typhoons, floods and other sudden disasters; There are also gradual disasters, such as land subsidence, land desertification, drought, coastline changes, etc., which can only gradually appear in a long time; There are also environmental disasters caused by human activities such as ozone layer change, water pollution, soil erosion and acid rain. There is a complex relationship between these natural disasters and environmental damage. It has become the common theme of the international community to scientifically understand the occurrence and development of these disasters and minimize their harm. Natural variations on the earth, including those induced by human activities, occur all the time. When this mutation brings harm to human society, it constitutes a natural disaster. Because it has brought different degrees of damage to human production and life, including the relationship between man and nature through labor and the interpersonal relationship related to it. Disasters are negative or destructive. Therefore, natural disasters are a manifestation of the contradiction between man and nature, with the dual attributes of nature and society, and are one of the most severe challenges faced by mankind in the past, present and future. The main sudden natural disasters in the world are: drought, flood, typhoon, storm surge, freezing injury, hail, tsunami, earthquake, volcano, landslide, debris flow, forest fire, agricultural and forestry diseases and insect pests, etc. There are many kinds of natural disasters in China. Earthquake, typhoon, rainstorm, flood, waterlogging, high temperature, lightning, fog, haze, debris flow, landslide, tsunami, road icing, tornado, hail, snowstorm, collapse, land subsidence, sandstorm, etc. It occurs in all parts of the country and local areas every year, causing extensive damage or devastating blows in local areas.

How should human beings prevent natural disasters and earthquakes? Earthquake is the rapid vibration of the earth's surface, which was also called earthquake in ancient times. Just like wind, rain, lightning, landslides and volcanic eruptions, they are natural phenomena that often occur on the earth. It originated from a certain point underground, which is called the source. Vibration comes from the source and propagates in the earth. The nearest point on the ground is called the epicenter. It was the first place to receive vibration. Ground vibration is the most intuitive and common manifestation of earthquakes. Strong earthquakes at the bottom of the sea or in coastal areas will cause huge waves, which are called tsunamis. Earthquakes are extremely frequent, and there are about 5 million earthquakes in the world every year, which has a great impact on the whole society.

Earthquake self-help encyclopedia

It is a better method to avoid nearby during an earthquake and evacuate to a safe place quickly after the earthquake. The so-called nearby avoidance means to make different countermeasures according to local conditions and different situations.

Shock absorption of school personnel

In school, what is most needed in the earthquake is the calmness and decisiveness of school leaders and teachers. In areas with medium and long-term earthquake prediction, students should be taught about earthquakes and earthquake prevention and shock absorption in combination with teaching activities. Before the earthquake, we should arrange the route and venue for students to transfer and evacuate. After the earthquake, calmly guide the students to evacuate in an orderly manner. In a relatively solid and safe house, students who can hide under desks, beside platforms and in teaching buildings can go to small rooms supported by pipes, and they must never run around or jump off buildings.

When there is an earthquake, walk in the street to prevent electric shock.

When the earthquake occurred, the glass fragments of high-rise buildings, concrete fragments outside buildings, advertising signs, tinplates, neon red light frames, etc. , may fall and hurt people. So when walking in the street, you'd better put your bag or soft things on your head, and you can also put your hands on your head when you are free. Try to prepare for self-defense. To be calm, leave the telephone poles and fences quickly and run to a relatively open place to hide.

Handwritten report on preventing natural disasters Typhoon is a very destructive and disastrous natural phenomenon and a terrible weather. A little carelessness will cause great losses.

No matter how destructive the typhoon is, it can be predicted and prevented by modern high-tech level.

People always have a sense of luck and think it's not that serious. The typhoon came, and even meteorological stations at all levels issued early warnings and forecasts in advance. But there are always people who don't pay attention.

Shenzhen is a coastal city with frequent typhoons. In this regard, every institution, every department, every family and every adult should prepare a complete set of preventive measures and methods to effectively reduce and eliminate the losses caused by typhoons.

The property management department shall promptly issue emergency notices and safety tips in the community after learning the typhoon information. Carefully inspect all kinds of ditches and drainage systems in the area and reinforce all kinds of signs and tall trees.

The most indispensable thing is to remind users to move flowerpots and easy-to-drop items on the balcony to a safe place, close doors and windows and avoid going out. When necessary, individual households should be notified by phone or at home.

Only by long-term adherence to "taking precautions", careful inspection, timely discovery, timely reporting, timely rectification, and taking solid and careful preventive measures can accidents and losses caused by disastrous weather be reduced.

No matter how terrible the natural disaster is, as long as everyone pays attention to it and takes adequate preventive measures in advance, the loss will be minimized.

How to be a pupil in natural disasters, the first thing is to protect yourself.

Because they say minors

You can help others on the basis of ensuring your own life safety.