China News Service, Yiyang, July 23 (Fu Jingyi and Yu Jie) "Bangbangbangbangbangbang..." At 0:00 on July 23rd, a patrol team from Hongyanhu Village, Nandingyilang Bahu Town, Nan County, Yiyang City, Hunan Province visited In the Dongzhou dike section of Hongyanhu Village, it was discovered that the flooding and total hazard occurred in the paddy field at the foot of the dike where the trachoma group had been dealt with. This caused the cultivated layer in the paddy field to float up as a whole, with a width of about 20 meters. The clapper in his hand issued an alarm and immediately reported to the Zhenfangzhi.
After receiving the report of the danger, Langbahu Town Fangzhi immediately organized 400 laborers, 15 rear eight-wheel trucks, 1 forklift, 6 hand-toweds, transported 6,600 tons of yellow sand and gravel, 30,000 woven bags, and 3,000 geotextiles. Square meter rushed to the scene to take emergency measures. Nanxian County Flood Control and Drought Relief Headquarters immediately organized personnel and materials to arrive at the scene quickly. Luo Weiyun, a water conservancy expert in Yiyang City, deployed a rescue plan. 150 provincial forest firefighters stationed in Nan County rushed to the scene for emergency rescue operations. Special police from Qingshuzui Town, County Economic Development Zone, and County Public Security Special Police organized personnel to assist the scene.
Nearly a thousand people were involved in the dangerous situation of trachoma flowing soil in Nan County. Photo by Li Ping
At the scene, the danger disposal personnel used the dike body to excavate a guide ditch every 5 meters. The guide ditch has a width of 0.8 meters, a lower opening of 0.4 meters, and a depth of 0.8 to 1 meter. The ditch is layered with 30 cm of sand , 40 cm pebbles. At the same time, a sand-gravel filter cofferdam was built within 20 meters from the inner foot of the levee. The cofferdam is 150 meters long, 1.5 meters thick and 1 meter high. Pave a layer of geotextile in the cofferdam, and then pave 1 meter thick sand and gravel for compaction and seepage.
According to Luo Weiyun, a water conservancy expert in Yiyang City, the main cause of the dangerous situation in the levee was the high water level of the outer river, the long duration, the poor soil foundation of the section of the dyke, the scattered flooding of the backwater dyke slope, and the improper drainage of seepage. In addition, the location was on July 12. Dangerous trachoma has occurred day by day, and the water content of the foot of the embankment is too large and soft.
The majority of cadres and groups are making every effort to fight for the emergency to ensure the safety of the lives and property of 25,000 people in the embankment. Photo by Li Ping
As of 19:00, nearly 1,000 rescuers (including 150 from the Sixth Forest Fire Brigade) had been dispatched on the scene. The Hunan Fire Rescue Corps mobilized 160 people from Changsha and Yiyang (including the Nanxian Brigade) to Nanxian County for assistance and mobilized sand. There are more than 8,000 tons of pebbles, 30,000 woven bags, 4,500 square meters of geotextiles, 6 excavators, 3 forklifts, more than 20 hand drags, 7 loading and unloading trucks, and 3 gravel conveyor belts.
At present, a cofferdam has been built to enclose the dangerous section where the danger occurs, and the trachoma is blocked with geotextile, sand and gravel, and the danger is basically controlled. The majority of cadres and groups are carrying out follow-up work to ensure the safety of the lives and property of 25,000 people in the embankment. (Finish)