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It will damage all kinds of buildings, damage the environment, and in serious cases, it will carry various viruses and germs to endanger life safety, and it will also lead to prices. Flood disasters occur almost every year. Floods often result in farmland being submerged, homes destroyed or even washed away.
The changes in the ecological environment caused by the floods, the failure of grain crops, and the outbreak of plagues are even more unexpected
1. Destruction of Industry and Transportation Floods will force industrial enterprises to suspend production, work and business, resulting in a decline in production and a decrease in output value. Second, flooding can cause damage to the infrastructure of railways and highways, such as roadbeds, pavements, tracks, tunnels, and stations, which will have a significant impact on transportation and logistics. Finally, floods can cause damage to power and communication infrastructure and equipment, which can damage transmission and communication lines, forcing power supply disruptions and communication disruptions, resulting in significant losses to the power and communications industry.
Second, endangering people's lives and health can have a huge impact on health infrastructure and all lifeline systems, causing food shortages and disrupting essential public health services. Theoretically, it is possible to have toxic chemical contamination during floods. Flooding can damage sewerage facilities and can also seriously pollute water sources.
Mixed flooding of untreated domestic sewage will increase the probability of waterborne diseases.
3. Inflation In addition to grain, the production of vegetables, poultry, eggs, and livestock will also be affected to a greater or lesser extent by floods, resulting in a decline in the supply of agricultural products. Secondly, the floods have led to the interruption of transportation, the logistics and transportation of grain and vegetables have become more difficult, and the cost has risen, pushing up the food **. The flood disaster has led to a decrease in the supply of agricultural products, and the transportation has been blocked, and the effect on the promotion of agricultural products has begun to appear.
And the increase is still trending further.
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The formation of flood No. 5 on the Yangtze River will have many impacts on the nearby area, one is to inundate nearby houses and crops, the second is to cause damage to personal and property safety, and the third is to have a huge impact on people's daily life and travel.
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The formation of the No. 5 flood of the Yangtze River has the greatest impact on the Three Gorges Reservoir, and experts** will have about 70,000 cubic meters of flood water per second flowing into the Three Gorges Reservoir. In addition, it will cause local landslides, mudslides and other problems, and damage the safety of people and property in nearby areas.
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It may affect the surrounding power supply, affect the daily normal life of the surrounding residents, and the nearby areas may also be affected by this flood and cause economic losses. Affect the weather in the nearby area, etc.
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The formation of flood No. 5 on the Yangtze River will cause the surrounding area to be flooded, as the saying goes, it is ruthless in natural disasters. Therefore, residents in the surrounding areas must evacuate in time to avoid flooding.
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The area that passes through itOriginalof the landform, rightThe production and life of human beingsCausing irreparable losses, we need to be prepared for flood prevention and flood control.
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The floods caused houses to collapse in many areas, leaving many people homeless. The daily life of the residents is hindered. Life and health safety are seriously threatened.
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If the flood is formed, basic crops and poultry will be drowned. This year, the farmers are really drifting, many people can't even go back to their homes if the terrain is low, Leshan is now very serious floods, I hope that friends in the ** are safe.
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Flood No. 5 on the Yangtze River could paralyze the drainage system, flooding low-rise houses, leaving people with nowhere to go, food shortages and crops starving.
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The formation of the No. 5 flood of the Yangtze River will have a certain impact on the transportation and power facilities in the surrounding area, and even affect people's travel, and indirectly affect people's lives.
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1. Natural causes: The flood of the Yangtze River is mainly due to the large amount of flood in the upstream main stream and the middle reaches of the tributaries, the lack of sufficient flood control and detention places in the middle reaches, and the lack of cathartic capacity of the river. Most of the areas through which the Yangtze River flows are humid areas, with a wide basin area, many tributaries, long flood seasons and large amounts of water in the main stream, and floods are formed by heavy rainfall.
In some years, (mainly related to the strength of the monsoon) heavy rainfall in the basin, the north and south tributaries come at the same time, especially the flood in the upper reaches of the Sichuan River, and multiple floods are encountered at the same time, and the main stream of the Yangtze River will inevitably have a major flood.
2. Human causes: due to excessive logging, steep slope reclamation, a large reduction of surface vegetation, and aggravation of soil erosion, the ability of the river basin to regulate runoff, peak shaving and replenishment of dryness is reduced, and a large amount of sediment flows into the river, resulting in too high the riverbed and reduced the cathartic capacity of the river. In addition, the enclosure of the lake and the cultivation of farmland have caused the lake to shrink, and the ability to regulate and store flood peaks has been greatly weakened.
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1. Natural factors: large amount of floods: humid climate, wide river basins, many tributaries, long flood season, and large water volume.
If the climate is abnormal, heavy rain falls in the basin, and floods from the north and south tributaries and the Sichuan River hit at the same time, the main stream of the Yangtze River is bound to have a major flood. There are not enough places for flood regulation and detention in the middle reaches, and the flood detention capacity is poor; The flood discharge capacity of the middle and lower reaches of the river is insufficient.
2. Human factors - due to unreasonable human activities: indiscriminate deforestation in the mountainous areas of the middle and upper reaches of the Yangtze River has reduced vegetation, resulting in: the ability of the river basin to conserve water sources, regulate the historical runoff, and reduce flood peaks has been reduced; Soil erosion has intensified, the riverbed has been silted, and the flood discharge capacity has been reduced.
In the middle and lower reaches of the lake, the siltation of sediment leads to the shrinkage of the lake and the weakening of the function of flood storage.
3. The causes of the floods in the Yangtze River are both natural and man-made, but the roles of the two are different: first, natural factors, and the second is the man-made factor, and man-made causes play a role in aggravating the flood.
4. Large amount of floods: gas excavation and rotting are wet, the river basin is wide, the tributaries are many, the flood season is long, and the water volume is large. If the climate is abnormal, heavy rain falls in the basin, and floods from the north and south tributaries and the Sichuan River hit at the same time, the main stream of the Yangtze River is bound to have a major flood. There are not enough places for flood regulation and detention in the middle reaches, and the flood detention capacity is poor; The flood discharge capacity of the middle and lower reaches of the river is insufficient.
Deforestation in the mountainous areas of the middle and upper reaches of the Yangtze River has reduced vegetation, resulting in a decrease in the ability of the basin to conserve water, regulate runoff, and reduce flood peaks; Soil erosion has intensified, the riverbed has been silted, and the flood discharge capacity has been reduced. In the middle and lower reaches of the lake, the siltation of sediment leads to the shrinkage of the lake and the weakening of the function of flood storage.
5. Man-made causes have played a role in aggravating the flood.
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1.Natural causes.
1) Influence of the southwest monsoon and southeast monsoon. The Yangtze River flows through humid areas, with wide basins and many tributaries, and is affected by the double monsoon, with a lot of precipitation and concentration, in May, the rain belt is located on the south bank of the Yangtze River, and in June it is located on the main stream and the north bank. In summer, there are many heavy rains, and the main and tributaries have a long flood season and a large amount of water.
In abnormal years, the rain belt hovered on the north and south banks of the Yangtze River, causing floods on the south bank, the Sichuan River, and the Han River at the same time, and the main stream experienced a major flood.
2) The junction of the stairs is mountainous and windwardly. It is located on the windward slope and has many terrain and rain. The basin is mountainous, with large drops and rapid currents.
3) The middle and lower reaches are low-lying and flat, and the drainage is not smooth. The middle reaches of the area are low-lying and flat, with slow water flow, sediment accumulation and poor drainage. There are not enough places for flood control and flood detention, and the water discharge of the Jingjiang River during the flood season is not smooth, and the water level is raised, which aggravates the flood disaster of the Yangtze River.
The low terrain in the middle and lower reaches of the plain and the poor drainage of rivers in the rainy season are the root causes of waterlogging.
4) The eastern part of the sea. It is bordered by the northwest Pacific Ocean and is greatly affected by typhoons and summer monsoons, with many disasters such as strong winds, heavy rains and storm surges.
2 Human causes.
1) Deforestation, soil erosion.
2) Sediment accumulation, enclosing lakes and making fields, and poor flood storage capacity of rivers and lakes.
3) The economic heart of our country. The Yangtze River Basin is an area with concentrated agriculture, developed industry and commerce in China, with dense population, construction, transportation roads, rapid economic development, and increased asset density, which aggravates the vulnerability of the affected body and increases the severity of the disaster.
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There are natural disasters and man-made disasters, three points of natural disasters and seven points of man-made disasters!
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Aaaaaa I'm here to ask questions!! It's swollen here.
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1. **The reported water level exceeded 98 in the same period, and a large part of the water level was due to the Three Gorges Dam discharging flood water in advance, which is no problem.
2. The water supply problem in the upper reaches of Wuhan should still be safe and controllable. First, the Three Gorges Dam is constantly adjusting its peak, but the situation is not normal this year, and it is estimated that it will always maintain a high water level below the safe water level for the sake of insurance. Second, even if the Three Gorges Dam cannot withstand the need to discharge a large amount of floodwater, there is also a Jingjiang flood diversion area for you to prepare, and if necessary, it will definitely blow up the embankment to divert the flood to protect the Jianghan Plain.
3. What is more worrying is the continuous heavy rainfall downstream of the dam, and this dam is powerless and indeed risky. I heard that there will be another heavy rainfall that lasts for three days, and the No. 2 flood peak is coming again...
4. At present, all departments and units in Yichang have entered the emergency command mode, and the current requirements of our unit are to be on duty to monitor the whole process, report the situation every two hours, and the preparation should be said to be sufficient, and the rest of the estimates will depend on God's face this year.
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The lower reaches of the Yangtze River are flood-prone areas for the following reasons:
1. The lower reaches of the Yangtze River are located in the flood collection area, and the floods are concentrated in the lower reaches of the Yangtze River, with large flood volume, high flood pressure, large flood inundation area, long flood inundation time, large flood inundation depth, large flood inundation impact, wide flood inundation range, and serious flood inundation disasters.
2. The lower reaches of the Yangtze River have complex topography, low-lying terrain, turbulent river channels, large flood inundation area, long flood inundation time, large flood inundation depth, large flood inundation impact, wide flood inundation range, and serious flood inundation disasters.
3. The lower reaches of the Yangtze River have a humid climate, heavy rainfall, large flood volume, large flood pressure, large flood inundation area, long flood inundation time, large flood inundation depth, large flood inundation impact, wide flood inundation range, and serious flood inundation disasters.
Fourth, the lower reaches of the Yangtze River have a low degree of construction, imperfect flood prevention measures, a large flood inundation area, a long flood inundation time, a large flood inundation depth, a large impact of flood inundation, a wide range of flood inundation, and serious flood inundation disasters.
In short, the lower reaches of the Yangtze River are prone to frequent flood disasters, mainly due to the fact that it is located in the flood collection area, the terrain is complex, the climate is humid, and the flood control measures are not perfect.
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Reasons: 1. There are many benches in the middle and lower reaches of the plain, and the terrain is low and flat, which is not conducive to the plency and flooding.
2. It belongs to the monsoon climate, with a lot of precipitation and concentrated coarseness, and a lot of heavy rain in summer.
3. The north and south tributaries flow into more.
4. The upstream area has serious damage to vegetation, resulting in soil erosion, and the downstream riverbed is raised, and sediment is silted up, forming an above-ground river (the Jingjiang River section is particularly prominent, known as the "Jiuqu ileum").
5. People surrounded the lake to create farmland, which reduced the area of the lake, and weakened the lake's ability to regulate and store floodwaters.
Measures: 1. Strengthen soil and water conservation work in the upper reaches and plant more trees.
2. The middle reaches of the river section are "cut off and straightened", and the river channel is dredged.
3. Downstream construction of water conservancy projects (reinforcement of flood control embankments, construction of reservoirs) 4. Improve people's awareness of flood prevention and self-rescue ability.
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Flood No. 2 greatly reduced the safety of the entire Yangtze River and posed a great threat to the people and regions in the Yangtze River basin.
The arrival of the No. 2 flood has made the inflow of the Three Gorges Reservoir reach 50,000 cubic meters per second, and this figure is expected to reach 55,000 cubic meters per second. In this case, in the case of heavy rainfall in the upstream, the flood storage of the Three Gorges Reservoir will inevitably have a certain impact on the upstream, and the continuous rise of the water level will make the upstream areas face certain pressure, but will not cause the upstream areas to suffer due to poor flood discharge, but need to share some flood risks. <>
The huge flow of the No. 2 flood also makes the Three Gorges Reservoir itself have certain hidden dangers, which are inevitable, and the dam body of the Three Gorges Dam will also face more or less tests in the case of impounding high water levels, but in essence, the dam will not appear in any danger, and once the guaranteed water level is exceeded, the flood discharge will be opened. As a result, the formation of Flood No. 2 made the Three Gorges Dam, the lifeblood of the Yangtze River, take risks and tests
The most critical is to pose a considerable threat to the middle and lower reaches. In Hubei, Anhui, Jiangxi and other provinces are generally affected by the situation, the reservoirs have exceeded the warning water level or even the guaranteed water level, all tributaries, reservoir lakes have been full capacity, Anhui and other places have started the plan to break the polder flood discharge, in this situation, the formation of the No. 2 flood is undoubtedly a great challenge. This has greatly reduced the safety of the Yangtze River, and the residents and production areas in the Yangtze River basin will be put to great test
The occurrence of major floods will also cause certain changes in the direction of the main stream and tributaries of the Yangtze River, and partially affect the surrounding ecology, and the severe situation caused by the No. 2 flood will make great changes in the flood control, flood storage and flood discharge measures of the reservoirs, and this human intervention will also have a certain impact on the ecological environment of the Yangtze River species.
All in all, the No. 2 flood of 2020 will make the entire Yangtze River basin extremely dangerous, and it will also be a huge test for the party and the people. <>
It won't be released until February next year, so it seems to be February 8.
I don't know how it is compared, but after the First Sino-Japanese War, the Chinese navy lagged behind the United States, Japan and Western Europe is an indisputable fact, the navy is a "nobleman in the army", it is quite expensive, some technology and experience can even be accumulated for hundreds of years, China still has the strongest fleet in the world in the middle of the Ming Dynasty, but then due to the wrong guidance of the closed policy, the Chinese navy deteriorated, until the creation of the people's navy to reverse the situation (this does not admit that it can't be done), in the seventies and eighties with the adjustment of the international situation, China and the West eased, China enjoys the treatment of "16 members of NATO", a large number of foreign ships visit China, provide advanced technology, the Chinese Navy once synchronized with the world, but then the Taiwan Strait crisis will break this status quo, the Chinese Navy was once again photographed outside the world, the gap is large, even if you work hard, it is difficult to keep up, but please believe, "we must build a strong navy" (***).
You use the crystallization of wisdom to create a new beginning.
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