The four reservoirs in Guilin blocked the peaks, reducing the loss of 4.294 billion yuan

From the evening of the 16th to the 22nd, Guilin City had a large range of heavy rains to heavy rains and local heavy rainstorms. In particular, there were heavy rain in Xing'an, Lingchuan and other places in the upstream of the Lijiang River, and the rainfall was huge. The Lijiang River had 3 super warning water levels, which formed a major test of downstream flood prevention security.

The reporter learned from the Guilin City Water Resources Bureau that in this round of heavy rainfall, in order to effectively play the flood control scheduling function of the upstream reservoir group in the Lijiang River, the city's water conservancy, meteorological, hydrological, municipal reservoir management office and reservoir dispatch expert group closely cooperated, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively, 5 times successively. The joint dispatch of the four reservoirs in the upstream of the Lijiang River is 1.43 meters and 0.85 meters for the two rounds of super -police water levels for the two rounds of super -police water levels in the urban section of Lijiang. Disaster and loss.

According to incomplete statistics, through the scientific and precise scientific scientific dispatching of the two -seater reservoir in the upstream, a total of 21,47 hectares of flooding land is reduced, 43,100 people are avoided, and the losses of floods are 4.294 billion yuan, and the safety of the people's lives and property will be strongly guarded.

46 stations rain over 600 mm

27 rivers 73 stop flood super police

How big is this round of heavy rainfall?

According to statistics, from 8:00 on June 16 to 8:00 on June 22, Guilin suffered a continuous rainfall. According to statistics, 574 stations in the city have more than 250 mm, and 46 stations have rainfall of more than 600 mm. Among them, the rainfall in the Wantian Yao people in Lingui District reaches 948 mm. The 22 -site hour rainfall in the city exceeded 80 mm, of which the hourly rainfall of Shunmei Village, Welfare Town, Yangshuo County reached 195 mm, and Lingui Twelve Drifting Scenic Area reached 110.3 mm.

Affected by heavy rainfall, the water level in the city soared. A total of 27 rivers in the city appeared in the 49 stations of 73 stations. 73 stops of super police floods. The main rivers of the Guijiang, Xiangjiang River, Luoqing River, and Guyi River all appeared in the process of super police floods, and repeated super police. Among them, the flood of the Dachengjiang Hydrological Station on the upper reaches of Lijiang River, 2.74 meters of the super police; the hydrological station of the Xiangjiang River was nearly 20 years of floods, and the super police was 2.9 meters. A 147.9 -meter flood -peak water level appeared, and the super police 1.9 meters were the largest flood since 1998.

Continuous heavy rainfall puts huge pressure on some reservoirs. According to statistics, at 8 o'clock on June 21, there were 188 floods in the 445 reservoirs in the city, including 6 large reservoirs, 25 medium -sized reservoirs, and 157 small reservoirs; 165 overlurred reservoirs, including green lions, including green lions The four large reservoirs of the ponds, ax mouth, Xiaolongjiang, and Junshan Reservoir, and 149 medium -sized reservoirs and 149 small reservoirs are the day when the reservoir flood discharge and super flood limit.

Peak peaks for Lijiang 1.43 meters

Effective defense of the first round of super police floods

The four large and medium -sized reservoirs in the Lijiang River have always been the most important part of the Lijiang flood prevention project system. In recent years, the Guilin Water Resources Bureau and Reservoir dispatch expert group has played an important role in reducing the flood disasters of Guilin urban area through joint dispatching of the reservoir group.

Earlier, Guilin has experienced 4 rounds of rainfall this year, especially the "Dragon Boat Water" during the Dragon Boat Festival Holiday, which has made the upstream reservoir group "overwhelmed".

"Before this round of heavy rainfall, we have continued to discharge the upstream 4 reservoirs. Through the air library, we have prepared for the new heavy rainfall." The relevant person in charge of the Guilin Water Resources Bureau said. In fact, since June, until 21:30 on June 18, the flood discharge of the upstream reservoir has not stopped.

Starting from the evening of June 16, the continuous heavy rainfall came as scheduled. Around the 18th, the maximum entry flow of 13,95 cubic meters per second appeared in the ax reservoir. The water level skyrocketed. The city's hydrological department predicts that a large -scale super police flood will appear in the urban section of Lijiang.

The relevant person in charge told reporters that in order to reduce the water level of the Lijiang River and reduce the pressure of flood prevention in the urban area, the joint dispatch expert group decided to close the gate of the reservoir at 21:30 on the 18th to avoid flood drainage and the Lijiang flood peaks of the reservoir and the peak of the Lijiang River flood. Overlap. Until 9:55 on June 19th, Hong Feng passed the hydrological station of Lijiang Guilin, with a maximum water level of 146.70 meters, 0.7 meters of super police, and a corresponding flow of 3160 cubic meters per second.

"After our calculation, the joint scheduling successfully intercepted the flood peak flow of 1,703 cubic meters per second to reduce the water level of the Lijiang River 1.43 meters." The relevant person in charge introduced that if the joint dispatch is not implemented, the water level of the Lijiang Hongfeng will reach 148.13 meters, compared with 1998, compared to 1998 The 148.4 meters of Hongfeng water level was only 0.27 meters low.

Peak 0.85 meters again

Successful defense this year Lijiang's largest flood

Although the first round of floods were successfully resisted, after more than two consecutive days of rainfall and joint scheduling on the reservoir, the water levels of the upstream reservoirs rose sharply. According to statistics, as of 22:00 on June 19, the water storage level of the ax reservoir was 10.08 meters.

However, the rainstorm is still "not dependent." On June 19, the municipal meteorological department forecast that heavy rainfall will continue in the next two days. After the expert group was discussing, while the heavy rainfall in some areas at that time, the water level in some areas, the water level of the Lijiang River had fallen to the "vacancy" below the warning line, decided to start from 19:00 on the 19th, and immediately facing Qingshitan, Axkou, Xiaolongjiang River, The flood discharge of the four reservoirs in Chuanjiang to further reduce the water level of the reservoir. According to statistics, after three times, the flood discharge has been increased, and the total current flow has reached 1,400 cubic meters per second. From the evening of the 19th to the 20th, the upper reaches of the Lijiang River ushered in a large range of heavy rain. The hydrological department again released the forecast of super police water levels in the urban section of Lijiang again on the 20th. After the expert group met again, it was decided that under the premise of ensuring the safety of the reservoir, starting from 14:30 on the 20th, the upstream 4 reservoir would reduce the 400 traffic, hoping to further reduce the flood water level.

At 20:45 on June 20th, the second Hongfeng of this round of Hongfeng Station of Lijiang Guilin was 147.35 meters, and the water level was 1.35 meters. "After calculation, this round of scheduling and intercepting the flood peak flow of 1180 cubic meters per second, successfully cutting the peak of 0.85 meters for the Lijiang River," said the relevant person in charge of the Municipal Water Resources Bureau. If there is no joint scheduling, the flood peak in the urban area of ​​Lijiang will reach 148.20 meters, which is 0.07 meters higher than the super police flood on the morning of the 19th.

- END -