Why is the flood in Chongqing so big this year?

Fierce? Yangtze River No.5, 2020? Floods and? Jialingjiang No.2? The flood narrowly escaped through the main city of Chongqing.

Although the water level in Chongqing section exceeded the standard by a large margin, some houses in the riverside area of the main city were flooded, and binjiang road was flooded, but due to the prevention in place, the loss was slight.

Zeguo Juzhou

Chongqing, a giant warship braving the wind and waves, stood proudly in the waves and survived the biggest flood since 1980, safe and sound.

With the gradual decline of water level, the recovery of production and life in Binjiang area is in full swing.

Looking back, we should not only ask: Why is the flood so big this year? From August 14, Chongqing adjusted the emergency response to flood control from level 3 to level 2, and then adjusted it to the highest level on August 18. Why is the upgrade so frequent?

There are three reasons for this:

1. Recently, a large area of heavy rainfall occurred continuously in the upper reaches of the Yangtze River, resulting in a large-scale flood peak.

The giant Buddha treads water.

From August 14 to August 18, heavy rains occurred in the main streams of Minjiang, Tuojiang, Fujiang and Jialing rivers in the upper reaches of the Yangtze River. Rare and persistent rainstorms have caused floods in many places in Sichuan. The Minjiang River, Tuojiang River and Jialing River have exceeded the warning water level, and the Fujiang River has exceeded the guaranteed water level. The incoming water in the upper reaches of the Yangtze River has increased rapidly. On August 18, Sichuan Flood Control and Drought Relief Headquarters launched the first-level flood control emergency response. This is also the first time that Sichuan has launched an emergency response to flood control.

Affected by the above inflow, the Three Gorges Reservoir had a flood peak of about 74,000 cubic meters per second on the 20th, the largest inflow since the Three Gorges Reservoir was built. Previously, the maximum flood peak was 20 12 years 7 1200 m3/ s.

The last flood peak of the two rivers has just crossed the border, and the water level has not receded. The two flood peaks are superimposed before and after.

The superposition before and after and the high bottom water level are the most remarkable features of a new round of flood. ? The Hydrological Upstream Bureau of the Yangtze River Committee confirmed that the interval from the last flood to the warning line to the new flood exceeding the police was only about 13 hours.

Caiyuanba fruit market

On August 16, flood No.2 of Jialing River was formally formed. On August 17 14, the Yangtze River flood No.5 was formed. Because the previous No.4 flood of the Yangtze River and No.0 flood of Jialing River just passed through the downtown area of Chongqing on August 1 4, 2004, the bottom water of the Yangtze River and Jialing River in Chongqing is relatively high, and the interval between the new round of transit floods is too short, which brings severe pressure to the flood control and flood fighting work in Chongqing. Flood control experts believe that this is a relatively rare flood? Superposition? Phenomenon, scientific name? Compound flood peak Just as the last flood did not retreat, another flood came.

3. The Minjiang River, Tuojiang River, Jialing River, Fujiang River and other rivers have exceeded the police and insurance at the same time, forming a multi-flow collection in the Chongqing section of the Yangtze River and Jialing River.

In the past few days, the continuous rainstorm in Sichuan has caused 32 rivers, including Tuojiang, Fujiang, Qingyi, Minjiang, Dadu, Jialing and Yellow Rivers, to exceed the warning and guarantee water levels. Flood of many rivers in the upper reaches? Fierce? Naturally, it will be conducted downstream and gathered in Chongqing, objectively causing the Yangtze River and Jialing River to skyrocket. At the same time, in August 18+0 1, the Hydrological Bureau of the Yangtze River Water Resources Commission upgraded and issued a red warning for the Minjiang River flood, a tributary of the upper reaches of the Yangtze River. The ultra-historical flood of Minjiang River has also had a serious impact on flood control in Chongqing.

Ciqikou

Sichuan media have used it? Once in a hundred years? To describe this year's floods. The relevant person in charge of the Hydrological Forecasting Center of Sichuan Hydrological Bureau explained:? Once in a hundred years? It doesn't mean that 100 will only happen once a year. What is the more professional meaning? An event with a probability of 1% in any year? .

This one percent probability event was met by Chongqing, and flood control has become the most concerned thing for Chongqing people these days.

According to the recent public reports of Chongqing media, it can be found that in recent flood peaks, the main leaders of Chongqing have visited the flood control work in advance.

Under the great attention of Chongqing, the flood that is eyeing up is like a beast that has been monitored all the time, and left reluctantly in the prescribed route.

Tongliang anju flood control frontline

Build a dam thousands of miles away and be vigilant. Natural disasters are invisible, but people's hearts are tangible. Taking all the possibilities that should be considered into account, Chongqing's consistent attitude is to nip in the bud; No matter how unfavorable the conditions are, Chongqing can deal with them steadily.

Rest assured to sleep.

Because we have the most assured 30 million citizens who love their hometown and never relax and help each other!