According to CCTV News, on July 6, a leakage occurred at the Jiufeng Reservoir Dam in Pingjiang County, Hunan. At around 7:10, after receiving the notice of danger, the Hunan Provincial Department of Water Resources urgently dispatched an emergency rescue expert group to the scene. At the scene, experts found that there was turbid water seeping out from the culvert at an elevation of 98.0m (reservoir water level of 125.30m), and the water quality was yellow, cold, and the water contained gravel. After preliminary analysis and research, the main source of water leakage in this leakage danger is as follows: the leakage from the original collapse hidden danger area on the left side of the inner slope of the dam to the concentrated outflow of the original culvert, and the danger has a development trend.
This subsidence hidden danger area was noticed by the inspectors at about 11 o'clock on July 5, and it was found that there was a large seepage at the foot of the original drainage prism slope of the dam, and after excavation, it was found that there was a 300mm diameter of the abandoned concrete culvert pipe under the dam (after on-site investigation, it was the old culvert left over from the construction of the dam), and there was turbid water flowing out. After discovering the danger, Pingjiang County has taken the following measures:
The first is to reduce the water level, vacate the storage capacity, open the water discharge gate valve of the water conveyance tunnel, and arrange 15 sets of 200mm PV.C inverted siphon pipes and 3 large pumping machines to discharge water;
The second is to organize 2 excavators, 15 trucks of sand and gravel with a total of 300 tons, and 30 tons have been filled.
As of 17:00 on July 6, Pingjiang County has organized the people along the river near the Jiufeng Reservoir Dam to prepare for transfer; Rescue personnel, machinery and equipment have arrived at the rescue site and put into use; The inner slope seepage paving clay yard has been selected, and the construction floating platform in the reservoir area is being erected; The monitoring of the settlement displacement of the dam has been started as planned, and the seepage monitoring facility downstream of the outer slope has been started.
The breach of the embankment of Dongting Lake has been blocked by 66 meters
The burst of the embankment is caused by a pipe gushing and can be closed in 6 to 7 days
According to CCTV News on July 6, the reporter learned from the rescue site of the first-line embankment breach of Dongting Lake in Tuanzhouyuan, Huarong County, Hunan Province, that at present, the water level inside and outside the breach is basically flat, and the work of plugging Helong has begun to advance, and rescuers are in emergency construction operations.
According to Xinhua News Agency, at 14:40 on July 6, the reporter learned at the scene of the first-line embankment of Dongting Lake in Tuanzhouyuan, Huarong County, Hunan Province, that the water level inside and outside the breach has been leveled, and the water flow rate has tended to be flat. Zhang Xuanzhuang, director of the safety and environmental protection department of the first engineering bureau of China Aneng Group, said that according to expert opinions, various preparations have been made before the plugging in the early stage, and the plugging operation is currently being carried out, and the left bank has occupied 3 meters, and the right bank is still rushing to build a wrap.
Mao Junjie, the person in charge of on-site monitoring of the Hunan Provincial Hydrological Emergency Monitoring Team, introduced that the water flow at the breach last night and this morning was large and fast, and at 13 o'clock, the water level inside and outside the breach was level, and the flow rate was relatively gentle, and the preliminary conditions for blocking the breach were gradually met.
This is the scene of the Dongting Lake embankment burst taken on July 6 in Tuanzhouyuan, Huarong County, Yueyang City, Hunan Province (drone photo).
Photo by Xinhua News Agency reporter Chen Sihan
According to CCTV News, Liu Xinjun, deputy director of the Rescue Coordination and Emergency Plan Management Bureau of the Ministry of Emergency Management, said that the final blocking task can be completed in six to seven days.
The reporter learned from the rescue site of the first-line embankment breach of Dongting Lake in Tuanzhouyuan, Huarong County, Hunan Province, that as of 20 o'clock on July 6, the 226-meter breach of Dongting Lake has been blocked for 66 meters, and at present, the plugging work is in full swing.
1. Emergency blocking of the breach. All Huarong engineering personnel have been in place, and 1,000 people from various towns have been dispatched to the scene to participate in rescue and defense. Quickly mobilize 400 "vehicles instead of warehouses" vehicles to fill the blockage, and urgently dispatch 10 dump barges and 40 flat barges to fill sand and pebbles outside the embankment to plug them.
2. Dispatch of rescue forces. As of 20 o'clock on July 6, more than 3,000 rescue personnel of various types have been mobilized by provinces, cities and counties, including more than 1,400 national comprehensive fire and rescue teams, more than 500 armed police forces, more than 500 militia members, and more than 650 social professional rescue forces. More than 2,000 rescuers have been deployed, more than 160 assault boats and rubber boats have been dispatched, and 5,445 people have been evacuated from Tuanzhouyuan in Huarong County in an orderly and safe manner, with no casualties; More than 3,000 people, more than 50 engineering vehicles, and 18 excavators were deployed to carry out foundation clearing, obstacle sweeping, laying color striped cloth, filling sandbags and other reinforcement work on the Qiantuanjian embankment (the embankment between Qianliang Lake and Tuanzhou embankment, the embankment is 14.35 kilometers long, and about 9 kilometers away from the breach), and carried out a dragnet investigation on the embankment to ensure that risks and hidden dangers are detected and dealt with early, and to ensure the absolute safety of the "second line of defense" of the Qiantuan embankment.
3. Material procurement. It is estimated that about 100,000 cubic meters of materials will be needed for breach plugging. Subsequently, depending on the progress of on-site rescue, water transportation (45 transport ships) will be adopted, supplemented by land transportation. In addition, 28 caissons were urgently dispatched from Shandong for plugging, which are expected to arrive before 12 o'clock tonight.
4. Transfer and resettlement. On the morning of July 6, Huarong County has set up four resettlement sites in the urban area: vocational secondary school, Zhuangyuanhu Experimental School, experimental primary school, and Zhanghua School to properly resettle the displaced people, and each resettlement point can accommodate 1,700 to 2,000 people. As of 6:00 p.m. on the 6th, 2,330 people had been resettled and transferred to the four resettlement sites, and the rest of the people chose to join their relatives and friends (volunteers were organized to arrange transfer to the masses). Four resettlement sites have been put in place: first, personnel are in place, and more than 600 volunteers have been organized to be on standby at any time; Second, the site is in place, the school dormitory building has been cleaned, and the transferred personnel have moved in; Third, the materials are prepared in place, and the toiletries such as toothbrushes and towels and drinking water are fully guaranteed; Fourth, security and fire protection are in place, and medical, public security, fire protection, emergency and other departments have settled in the resettlement site.
5. Security zone defense. Led by city and county leaders, 600 laborers from nearby townships and towns with less flood control pressure were dispatched to strengthen the defense of embankments in the safety zone and maintain the normal living order of people in the safety zone.
According to CCTV News, the danger of the Dongting Lake bursting was caused by pipe surges. Pipe gushing refers to the flow of water through pores or cracks in the soil, forming a pipe-like water flow channel, causing soil particles to be carried away, forming a cavity, and when the cavity expands to a certain extent, the levee will collapse and form a dike burst.
Experts said that pipe gushing is a common danger in the Dongting Lake area, because the embankment foundation in the Dongting Lake area is mostly sand and pebble foundation, and the permeability is strong, when the river outside the embankment rises, the water pressure difference between the two sides will produce pipe gushing in the weak link.
Huarong County issued a letter to the county's fathers and villagers
Accept donations, urgently need mineral water, bread, etc
On July 6, the Huarong County Flood Control and Drought Relief Headquarters issued a letter to the county's fathers and villagers, as follows:
The county's fathers and villagers:
On the afternoon of July 5, the first-line embankment of Tuanzhou Dongting Lake in Tuanzhou Township, Tuanzhou Township, our county burst, causing the area to be flooded, and all the affected people have been safely evacuated.
Xi Jinping, General Secretary of the CPC Central Committee, President of the People's Republic of China, and Chairman of the Central Military Commission, attaches great importance to and gives important instructions, calling for all-out emergency rescue work to effectively protect the safety of people's lives and property. The provincial party committee and the provincial government, the municipal party committee and the municipal government, and the county party committee and county government are organizing forces to go all out for emergency rescue, and in order to effectively do a good job in the current rescue and rescue work, the people of the county are requested to obey and cooperate with the county and township flood control command and dispatch:
(1) In order to maintain the lifeline of rescue and disaster relief, the general public is requested not to go to Huazhu Road, S222 around the city to plant flags, and Zhuzikou direction, so as not to affect the passage of disaster relief and material support vehicles.
(2) The general public is requested to stay away from the embankment breach area as much as possible, and do not gather or watch; Neighbors should play a spirit of solidarity and cooperation to help each other and cooperate with each other to ensure their own safety.
(3) During the flood prevention and disaster relief period, the people of the county are requested to consciously abide by the social security order, do not believe or spread rumors, and do not publish false information on WeChat, Weibo, Douyin and other online platforms.
(4) The retail departments of all kinds of markets in the county should adhere to the bottom line of conscience, ensure that the food supply is sufficient, and must not raise prices. Public security organs should take strong and effective measures against theft, looting, sabotage, encroachment, and other acts that endanger the safety of the people's lives and property, and deal with them in accordance with law. It is hoped that the cadres and masses of the county will strengthen their confidence and work together to win the battle of flood prevention and disaster relief.
Huarong County Flood Control and Drought Relief Headquarters
July 6, 2024
At the same time, the Rong Media Center of Huarong County, Hunan Province issued the "Notice on Accepting Social Donations", announcing the contact information for receiving material and financial donations. The full text is as follows:
How can I save myself when the flood hits?
How to avoid danger and call for help when trapped by floods?
Learn to make your own emergency rescue equipment
Emergency Rescue Backpack Method: Prepare an empty backpack, 4 empty bottles of about 2 liters, tighten the caps, put two bottles in the bag, and tie the other two to the backpack straps.
How to make a plastic bottle life jacket: Prepare 10 500ml plastic bottles, stuff the bottles into the clothes, tighten the caps from the outside, and fix the plastic bottles on the clothes. The plastic bottle is fastened to the front and back of the body, and the waist is tied tightly with a rope.
Use other floating materials: Wooden tubs, wood, large pieces of styrofoam and other materials suitable for floating can also be collected and processed into life-saving devices.
Correctly avoid danger and call for help
1. If the flood has already arrived, use a stick to probe the road surface and stay away from telephone poles. Once the water depth is waist-deep, do not continue to wade in the water, you can use boats, wooden rafts, door panels, etc., to do water transfer.
2. Look for high places to avoid danger. If the flood comes too quickly and it is too late to move, immediately climb on the roof, upper floors of buildings, large trees, high walls, etc., to take shelter temporarily, wait for rescue, and do not swim alone to evacuate.
3. Quickly call for help using mobile phones and other communication devices. When calling for help, try to provide accurate location information and the situation in which you are in the situation.
4. Attract rescue attention. If communication devices such as mobile phones cannot be used, they can also flash flashlights, blow whistles, shake flags, bright clothes, etc., and send out distress signals.
Edited by Duan Lian Du Bo
Proofreading|Liu Xiaoying
The daily economic news is synthesized from CCTV news, Xinhua News Agency, Huarong News Network, public information, etc
National Business Daily