The flood situation in the south touched people's hearts and the situation became more severe. Seven days ago, the Ministry of Water Resources and Defense of the People's Republic of China adjusted the response level from level 4 to level 3. Only six days later (12th), the response level has been changed from level 3 to level 2 (Jiangxi has been adjusted to level 1). Statistics show that since June, 433 rivers across the country have experienced floods above the alert level, of which 109 have exceeded the guaranteed water level, and 33 have exceeded the highest water level in history . At present, the Yangtze River mainstream under the Jianli River and Dongting Lake, Poyang Lake and Taihu Lake are still super police.
At present, Hongfeng in the Wuhan section of the Yangtze River has just passed. On the evening of the 13th, Chen Guiya, deputy chief engineer of the Yangtze River Water Resources Commission of the Ministry of Water Resources, visited CCTV News 1+1 and answered Bai Yansong's questions about Hongfeng in Wuhan.
Bai Yansong: Earlier news reported that Hong Feng would arrive in the Wuhan section of the Yangtze River on the evening of the 13th, but then reported that Hong Feng had arrived in Wuhan on the evening of the 12th. Why did this happen? Does it also mean that Wuhan is safe?
Chen Guiya introduced that Wuhan Hongfeng was later judged. The water level in Wuhan at 23:00 on the evening of the 12th was 28.77 meters, which was judged to be Hong Feng. But on the 13th day is a day in the high water level, the water level is still 10 am Hankou in 28.77 meters, 14, 15 are 28.76 meters, 28.73 meters was 21, so the judge Wuhan flood peak is a relatively fat , too That is to say, Hong Feng was on the 13th during the day . Why are you so fat? Because the Three Gorges has been controlled at the same flow rate , which is 19,000, which is relatively stable, and the amount of water deposited in the lake is also relatively stable, it is said that the flood peaks in Wuhan are relatively flat, which is relatively normal.
Regarding whether Wuhan is safe or not, Chen Guiya said that although Hong Feng is passing, Wuhan (including Hubei from below Jianli), Hubei has embankments close to 600 kilometers of the Yangtze River, and the water level is relatively high, which means that the high water level is above the warning level It will continue for about ten days . The high water time is longer, it is not that Hong Feng is safe after passing , it will be fine. In the case of slow water withdrawal and long high water duration, the river embankment is also prone to some small dangers , so we still say continue to do the inspection of dikes and duty duty, encountered some minor danger to timely detection, early disposal, not because of the small danger and lead to greater danger, the formation of floods, the country should attach great importance .
Subsequently, Bai Yansong mentioned the topic "1998" that netizens have been discussing for several days. Bai Yansong said that the water level of the main control stations in the middle and lower reaches of the Yangtze River is lower than 1998. When compared with 1998, even if the water level reached 1998, it can be dealt with after 20 years of progress. How is it judged now?
According to Chen Guiya, the water level of most stations along the main stream of the Yangtze River this year is lower than that of 1998. It may have reached the downstream control station Datong Hydrological Station. The water level here should be said to be crossing the peak now. After 1998, more than 3,900 kilometers of main levees in the middle and lower reaches of the Yangtze River have reached the planned design standards, that is, the levee construction has reached the actual standard. Therefore, compared with 1998, the current levee has its ability to defend against floods. There is a fundamental change, so even if the same large flood occurred in 1998, the water level of Wuhan Hongfeng is 28.77 meters this time, and it is 29.43 meters in 1998, which is still about 70%. Even if the 1998 flood occurred, the current dike To prevent such floods, safety can be guaranteed.
(Editor Mao Yawei)