The "sentinel" of the East River dammed lake in the Bay Bay | Luding "9.5" earthquake

Cover reporter Chai Feng Orange Liu Yanjun

Starting from the side of Zigong Gaishan, the end of the Dadu River, the Wan Donghe Village slowly flowed, and Wandong Village grew deliberately in the arms of the green mountains and green waters.

On September 5th, a sudden motion of the mountains and mountains broke the tranquility of the village. A magnitude 6.8 earthquake occurred in Luding County, Ganzi Prefecture, Sichuan. The gully forms a dammed lake.

The river is blocked, and the newly formed dammed lake like the sword hanging above the head threatens the safety of the lives of more than 100 villagers downstream. In an unusually critical situation, more than 100 people threatened by the East River along the Bay were urgently transferred to a safe zone.

Behind this emergency transfer is inseparable from the efforts of the emergency monitoring team of the Ganzi Hydrological Center. They have repeatedly advanced to the frontier of danger, repeatedly explored key water conditions, measured accurate data, and sounded the "sentry" for the transfer of local scientific early warning.

On September 8th, the Sichuan Provincial Department of Water Resources combined with the Ganzi Hydrological Center for several consecutive days to test the current data to analyze satellite remote sensing, aerial pictures and perennial hydrological materials to judge the recovery of the river. eliminate.

Investigation: Climbing up to 40 meters high and steep wall with a fiber rope

At noon on September 5th, after the mountain was shaken, Xu Yinchang, director of the Ganzi Hydrological Center of Ganzi, ran back to the office.

"Hurry up and look at the monitoring. How is the form of the river now?" Xu Yinchang informed the water conditions forecast room and the hydrological monitoring room to immediately investigate the 63 video surveillance sessions in the jurisdiction. Whether there is a dammed lake.

During the investigation, the staff found that the five surveillance had been in a black screen. "Go!" Xu Yinchang made a decisive time, and the three assault working groups went to Luding and Kowloon to form a investigation of Xiaogou Xiaoxi. Among them, Xu Yinchang led the working group to the Town of Musician. The road was covered with gravel on the road after the strong earthquake. There were small stones flying from both sides of the road. What's worse, when the car was at the mouth of the Hailu ditch, the car was in the mountains. The landslide blocks the road.

Zhang Dinggao, deputy director of the Ganzi Hydrological Center, controlled the drone carried with him and flew to the reconnaissance situation above the Musician hydrological station. Through the picture of the drone transmitted, compared with the normal flow of Mo Xishuwen Station, the amount of moisture ditch was reduced. Everyone preliminarily speculated that Mozigou was likely to have a dammed body, and it was necessary to rush to the scene immediately.

On September 5th, Ganzi Hydrological Center Emergency Monitoring Team carried hydrological emergency monitoring equipment to climb more than 40 meters high steep wall

The way forward can only open a new road on the steep wall rocks. A piece of optical fiber rope of about 40 meters long allows everyone to see the hope of "excellent life". Looking at the fiber -fiber rope hanging from the top of the mountain, the young player Pan Pengcheng made a straightforwardness in his heart. This is one of the few rock climbing in his 4 -year career. After fixing more than 20 pounds of instruments on his body, Pan Pengcheng grasped tightly. I lived in this "life -saving rope".

Everyone in the emergency monitoring team carrying 20 pounds of instruments, of which the heaviest is 40 pounds

"The fiber line is very thin and there is no security measures. Young employees get up a little scared." The danger involved everyone's heart, and everyone stepped up.

More than 20 minutes later, all people climbed up the 40 -meter -high steep wall, looking at the danger behind, everyone pant.

"Which department do you want to go?" Seeing Xu Yinchang and his party, a passing villager stepped forward.

"We are the hydrological department, and we must go to Mozigou to see the flow situation."

"I drive you, don't want money." The villagers were enthusiastic.

Due to traffic jams in the mountains, Xu Yinchang and his party arrived at Mozigou for nearly 3 hours. Fortunately, it was found that the dammed lake had begun to pass through the telescope.

Night Detective: Use the drone to drop the water in the sound of the water in the sound of the water

But hydrological survey tasks have not ended. Just as the emergency monitoring team rushed to Mozigou in Moxi Town to check the dangerous situation of the dammed lake, Ganzi Prefecture also received a call from a villager: "The mountains of Wandong Village, Wanzhen Town collapsed, and the Dadu River tributary Bay East East East East The river is broken. "

After confirming the risk of Mozigou, Xu Yinchang led the team to the Wan Donghe and Water Resources Bureau staff to meet. From Moxi Town to the East River, along the way is also the gravel left after the earthquake. Everyone can only get out of the car. The original ten -minute journey took 50 minutes.

The night is gradually shrouded, and it is more difficult to view the position of the dammed body. From time to time, the sound of gravel rolled down from time to time, and did not dare to move forward again.

"Use the drone, there is a night vision function." Zhang Dinggao once again enabled special "scouts". The signal interference in the helpless mountain was severe. After the drone flew for about two kilometers, the picture passed the picture and lost the picture. But before that, everyone can clearly see that the East River in Wan is in a state of breaking.

In order to ensure everyone's safety, Xu Yinchang decided to report the situation to the local government first, and suggested to transfer the affected people in the lower reaches of the dammed lake, and continue the survey the next morning.

Early in the morning the next day, standing at the flow of Wan Donghe and Dadu River, what Xu Yinchang saw was not the past scene. The Wan Donghe Channel was covered with sediment, and the mountains around were still collapsed, and occasionally falling into the river with falling rocks.

"Destroyed!" The drone surveyed in the Wan Dong Hanoi brought good news, and the dammed body had a decision. "It is about 3 cubic meters per second, and the traffic is relatively small." Experts suggested entering the Bay Donghe Basin to confirm it faster to judge the impact of the downstream especially in the Dadu River.

Hydrological emergency monitoring players monitor the flow of the deed lake. At the same time, rescue is still ongoing. On the mighty Dadu River, the continuous submissive boats and boats were at the helm of the rescue team and vowed to transfer the victims on the Dadu River "islands" to a safe area.

The accurate exploration of the dammed body is even more urgent. The drone took off again and again, and the expert group of the Water Resources Department continued to inquire and discuss. "There should be 6 flows (6 cubic meters per second), and it has increased again!" At 11 am, the loss of the dammed lake was increased a little bit, which is a good sign.

Entry: Surveys of the dammed ditch several times by the rapids of the rapids

As the rescue is close to the end, the assault boats that can be evenly come out gradually increase.

After contacting the last assault boat, Xu Yinchang and his party arrived at the lower reaches of the lower reaches of the dammed lake. Due to a week ago, there was a mudslides in the Wandong River Basin. After the earthquake, the mudslide accumulation increased and blocked the river with the newly formed dammed body.

Emergency monitoring teams turned over 2 kilometers of chaotic stone beaches and dense forests and arrived at the underwater surveillance section of the lower reaches of the dammed body.

The four group crossed the mountain and walked deep into the blocked river. There was still a sudden attack on the road on the way. "About one or two stones will be dropped in about a minute. At that time, I was really scared. This was the most thrilling time in the past 4 years." Pan Pengcheng recalled that he was still lingering.

Emergency monitoring team members install emergency water level monitoring equipment downstream.

When the position of the earthquake mudslides stacked, Xu Yinchang discovered that the water flow flowing out of the dammed lake after the damage lake was piled out of the piles formed by the previous mudslides, and it was easy to determine the flow velocity. Everyone immediately adjusts the device and instrument survey traffic. After three data comparison, the real -time traffic is 12.9 cubic meters per second.

The picture shows Xu Yinchang monitoring the outflow of the library

Xu Yinchang quickly turned the news from the sanctuary back to the experts to study and judge and analyze. After receiving the controllable reply from the entire dammed lake, everyone was completely relieved.

In the afternoon of the same day, the Sichuan Provincial Department of Water Resources released news. Through on -site inspections, satellite remote sensing, and drone navigation, it was confirmed that the location of the Wan Dong dammed lake was about 4 kilometers away from the intersection of the Dadu River. After entering the Daguang River, he directly entered the Dagangshan Power Station Real Estate Area (777 million cubic meters of total library capacity). More than 100 people who have been threatened by the East River along the Bay have been transferred to a safe zone.

On September 7, the hydrological emergency monitoring team was transporting the instrument equipment to the monitoring point.

On September 7, Xu Yinchang led the team to the water flow observation point to continue monitoring and found new changes. The accumulation body has been washed out of three river grooves, and the water flow is turbulent.

Hydrological emergency monitoring team enters the route of current measurement area

When Pan Pengcheng stepped into the first river ditch carefully, he fell down instantly. He quickly put his hands into the mud, trying to pull out his shoes, and after stepping on the teammates around him, the river water mixed with sediment was spreading to the calf belly.

In order to safely cross the river ditch, the two of them made a group. One of them who tied a safe rope was responsible for dripping the water measurement, and the other person dragged the rope on the shore to ensure the safety of the companion. During the process, Pan Pengcheng was overwhelmed several times. After a few sips of water, he immediately got up, and he couldn't care about the wet and sticky clothes, and hurriedly measured.

In order to ensure the safety of the survey, the hydrological employees in the water are pulled with a safe rope

On the other side, about 300 meters away from everyone, the armed police took the assault boat to be waiting to prevent the measured team from being rushed down by the water.

"The feet are all white and wrinkled." After ashore, everyone took off her shoes and socks and was embarrassed. Fortunately, the data shows that the traffic is stable and there is no risk of a big decision.

On September 8th, the reporter learned from the Sichuan Provincial Department of Water Resources that through comprehensive analysis of on -site inspections, satellite remote sensing, drone navigation, expert meeting, etc., in accordance with preliminary assessment of national regulations, the risk level of the Lake Lake of the Wandong River is a level IV low -level low -level low -level low -level low -level low low level Danger. The dammed lake has achieved natural leakage. It is expected that the library will not increase significantly, and the risk of dammed lake has been eliminated.

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