1998 was there a flood in Yueyang?

Fan Zhongyan said at the beginning of Yueyang Tower that "the victory of Baling lies in Dongting Lake".

Yueyang Yangtze River levee is a famous dangerous section of the Yangtze River. After the flood in 1998, after several years of construction, the main dike of Yueyang Yangtze River has undergone earth-shaking changes. The hundred-mile-long dike reinforced by the whole danger has cast the steel barrier of the Millennium ancient city and become a beautiful business card of this passionate and dynamic metropolis.

Move the dam once a year

Yueyang Yangtze River dike starts from Wumakou in Huarong County and ends at Tieshanzui in Huanggai Lake, with a total length of 142 km. The nature reserve is 2,096 square kilometers, with 6,543.8+0.36 million mu of cultivated land and 6,543.8+0.6 million permanent residents. Directly protect Yueyang City, Beijing-Guangzhou Railway, National Highway 107, Chenglingji Port, Changling Refinery, Yuehua General Factory and other large enterprises. This section of the car bay section is cut straight, Luoshan is under it, and Dongting Lake meets. Riverside water system is complex, and rivers and lakes are silted year by year, which leads to the continuous deterioration of water conditions. There is a saying that "a long river travels a thousand miles, and the danger lies in Yueyang".

1998 The width of the front dam crest is only 5 to 6 meters, and the elevation of 33% of the dam crest is lower than the water level of 1998. The dike foundation has serious leakage; 34 culverts of 66 dike-crossing buildings were broken, and 13 leaked water; The length of bank erosion and collapse is 10 1 km. According to statistics, during the 64 years from 1934 to 1998, the dike moved 65 times, with a length of 77 kilometers, and the collapsed area reached120,000 mu. During the flood control period every year, a lot of manpower, material resources and financial resources should be invested in flood control and emergency rescue. The lag of dike construction has seriously restricted the social and economic development of Yueyang city.

High-strength reinforcement dam

After the flood of 1998, the state invested a huge sum of money to strengthen the main dike of Yueyang Yangtze River. The construction contents include heightening and strengthening the main dike, dike slope protection, foundation seepage prevention, reconstruction and expansion of dike-crossing buildings, river bank protection, resettlement and so on. The project strictly implements the construction owner system, supervision system and bidding system. Yueyang Water Affairs Bureau is the legal person of the project, and established the Yangtze River dike reinforcement project office, which is responsible for the project implementation and fulfilling the responsibilities of the owner. The three companies involved in the supervision are all first-class supervision units, and the construction team is selected through bidding for the whole society.

In order to ensure the quality, the "three controls" were fully implemented in Yueyang Yangtze River dike project construction. First, the construction unit controls itself. Each construction unit must set up a geotechnical laboratory at the site, equipped with full-time quality inspectors, otherwise the supervision engineer will not issue a commencement order; The second is the owner's sampling inspection, and those that do not meet the indicators should be reworked in time; Third, the government quality supervision department does not regularly supervise and inspect the construction quality. From 1998 to 200 1, the qualified rate of completed projects is 100%, and the excellent rate is over 80%.

After four years of construction, up to now, the embankment section of 1.20 km has reached the standard in an all-round way, the concrete slope protection of 92 km of the embankment body and 66 structures crossing the embankment have all been completed, the seepage prevention of the embankment foundation is 1 km, and the river revetment is 20.3 km, and the rest projects will be completely repaired in the near future.

A "safety dike" with remarkable benefits

After reinforcement, the flood control and social benefits of Yueyang Yangtze River dike have initially appeared.

During the flood season of 1998, the water level in Chenglingji reached 33 meters, and the levees and culverts began to be in danger. When the water level reaches 35.94 meters, there are more than 70 kilometers of temporary water retaining sub-dikes on the Yangtze River levee, with the highest sub-dike of 2.5 meters and the maximum water retaining depth of 1.8 meters, giving people a thrilling feeling of "people walking on the dike and water flowing on their heads". In that year, more than 2,700 dikes were in danger, 27,000 people participated in flood control and emergency rescue, and more than 2,000 people were dispatched by the People's Liberation Army and the Armed Police Force. The cost of flood control equipment was 1. 1 100 million yuan. There were two high flood levels in the Yangtze River this year, and the highest water level in Chenglingji reached 34.9 1 meter. There is no great danger along the dam. On the 142 km levee, except for about 3000 defenders, basically no flood control materials were used.

The reaction of ordinary people is more intuitive and sensitive. 1998, when the water level in Chenglingji was less than 33 meters, the people in the dike began to panic, and all the main labor force was transferred to the dike for flood control and emergency rescue, and production was basically at a standstill. People pay close attention to the change of water regime almost all the time, and pack up their belongings for transfer. When the water level reaches 35 meters, all the old, weak, women and children in the dike will move away. During the flood season this year, except for the deployment of some labor force for defense, no one moved in the dike. People's hearts are stable, and production and life are orderly. Many immigrants have received state subsidies to build new houses, and the production and living environment has also made a qualitative leap.

An old water conservancy worker in Yueyang sighed, "In the past, flood control was like fighting. When people move away from their homes, they can't live in peace, their fields can't be carefully cultivated, and their books can't be absorbed in reading. We water conservancy workers are as busy as ants on hot bricks. It's different now. The dike is as strong as the Great Wall, and the people along the river have really lived a life of peace and contentment. "

After Dongting Lake and Yueyang Tower, the Baili causeway has become another "victory" for Baling.