Lushan is located in Xichang City, Liangshan Prefecture, Sichuan Province. It is dependent on the city and is accompanied by water. It is a peaceful place for locals to live happily and develop their businesses. But on March 30, a fire changed the place. The forest was burned down on a large scale, the ecological geological environment was severely damaged, and the possibility of secondary geological disasters after the fire was extremely high, and the situation of geological disaster prevention and control was very serious. According to statistics, since the main flood season, 11 post-fire mudslide disasters have occurred in Liangshan Prefecture, which has become the sword of Damocles hanging above the heads of the people of Liangshan , and there is a danger of falling at any time. A battle to race against time and defend Liangshan was launched in full swing in the Yi Township.
Catch early and quickly build life projects
△ Behind the mudslide ditch sand blocking dam, charred forests can also be seen behind the window period before the flood season, on April 2, after fighting against wildfires for 72 hours and the open fire was just extinguished, Xichang immediately carried out a 17-day secondary geological disaster investigation on the entire fire area and affected area of Lushan. On April 27, the "Xichang City Jingjiu Township Secondary Geological Disaster Prevention and Control after Forest Fire" won valuable time for the implementation of subsequent emergency projects. After entering the main flood season, the Sichuan Provincial Department of Natural Resources conducted a 73-month on-site supervision of flood prevention and disaster reduction and geological disaster prevention and control work in 21 cities (prefectures), including Liangshan. "In early April, we quickly organized a geological survey team to conduct a comprehensive investigation and review of secondary geological disasters in forest fire overfire areas in Xichang, Muli , Yanyuan , Xide , Mianning 5 counties and cities." said Bu Semuqu, deputy chief of the Geological Disaster Prevention and Control Section of Liangshan Prefecture Natural Resources Bureau. It is understood that a total of 133 new and old geological disaster hazards in the overburning area were found in the whole province, and 106 were added to the hidden danger point , and 70 new were burned around Lushan alone. According to the expert review opinions, Liangshan Prefecture decided to include the 19 ditches, which are the most threatening areas in Xichang and Muli, into emergency rescue and disaster relief projects, as a key project for secondary disaster prevention after fire. Ni Hongqiang, the stationmaster of Xichang Municipal Local Environment Station, said that in accordance with the "Notice of the General Office of the Sichuan Provincial People's Government on the Issuance of the Management Measures for the Management of Rescue and Disaster Relief Projects in Sichuan Province", once it is included in the emergency rescue and disaster relief project, the contractor can be directly determined.
△The huge blocking body protects Xichang Ningyuan School
Time is life. In just one month, 19 most dangerous ditches in Xichang and Muli have set up 19 sand blocks that protect life-protecting dams have been set up in the mouths of 19 ditches in Xichang and Muli. After the flood season this year, it has effectively blocked more than 712,000 cubic meters of silt, stones, branches and other sources of silt on the ditches and slopes, protecting downstream threat objects and reducing economic losses.
group special combination to improve disaster prevention capabilities
△Workers are cleaning up the sand dam
Xichang Ningyuan School is located on the east side of Lushan. On March 30, a violent fire spread to the back mountain of the school. However, the fire was put out, and the two ditches were facing the school. There was a large amount of loose accumulation in the ditch. When heavy rains occurred, there was a risk of mudslides erupting at any time. Ni Hongqiang said, "In view of this, we have planned two governance projects in two ditches in the back mountain of Ningyuan School." At the scene, two sand blocking dams have been completed, and workers are orderly cleaning up the silt in the sand sink.
△The automatic meteorological station newly built in Lushan Turtle Pond
In Lushan Turtle Pond, the new automatic meteorological station with solar power supply, meteorological sensors, data collectors, wireless transmitters and other new automatic meteorological stations are particularly conspicuous. "In order to more accurately grasp real-time information such as the weather and rainfall in the location, we have built 78 automatic weather stations in 5 overburden areas. We have completed 7 points of construction and can upload rainfall information." Ni Hongqiang said. In addition, the five counties and cities in Xichang, Muli, Yanyuan, Xide and Mianning adopted government procurement and invitation methods to implement eight geological survey teams, including the 281st Brigade and the Panxi Geological Team, 43 professional and technical personnel, and 13 industry experts as professional and technical support service units, resident day and night, ensuring the scientific and efficient disaster prevention measures.
Fine measures to resolve hidden dangers and risks
△After the mudslide disaster scene of Xiangshuigou fire in Anha Town
At around 21:30 on June 23, mudslide disasters occurred in mudslides after fires of Xiangshuigou, Anha Town, located on the Lushan side, mudslide disasters occurred successively. More than 30,000 cubic meters of earth and rock flow poured down the ditches, destroying five households and five rooms downstream. Due to the timely warning and proper disaster response measures, 7110 households and 308 people were transferred along the channel in advance, directly avoiding the casualties of 75 households and 30 people in . The two ditches that cause disasters have not been included in the 19 projects to manage. Does it mean that the risk of being threatened by geological disasters is higher? The answer is yes. However, engineering governance is not the only way to reduce the threat of geological disasters. Judging from Lushan’s successful risk aversion experience this time, early detection, early warning, and early avoidance of can effectively reduce the risk of geological disaster threats. It is understood that before the disaster occurred, Liangshan Prefecture had organized emergency, meteorological, natural resources and other departments in real time to schedule and discuss in advance according to the rain trend. The "6-level disaster prevention responsibility system" of rural groups in the prefecture and city are jointly prevented and coordinated, and 24-hour duty is strictly implemented. Professional and technical teams and expert teams will refine disaster prevention measures based on the specific situations of hidden danger points. Village cadres and monitors can correctly and proficiently master the methods to analyze the trend of disasters and decisively send out early warning signals. Every geological disaster risk point, monitoring area, foreign construction units and personnel in poverty alleviation, and independent relocation must carry out more than one knowledge publicity and training on disaster recognition, disaster prevention, risk avoidance and self-rescue, and more than three emergency transfer and risk avoidance drills ( three drills must have one "no script" practical drill at night in the rain ).
△ Liangshan Prefecture has built a new resettlement site for residents threatened by terrestrial disasters
"We have particularly strengthened the investigation of hollow villages. In addition to pairing up to help the elderly, weak, sick and disabled households, we also built temporary hedging places, paid temporary transition fees, and relying on relatives and friends to allow some people who threaten the area or those with limited mobility to settle in advance." Busemuqu said that in response to the special danger situation in Lushan, Xichang City's finance department has included a transition fee of 300 yuan per person per month. For those who are seriously threatened by hidden dangers in the overburning area of Lushan and need permanent relocation, the Xichang Municipal Government has also clarified the permanent relocation method. It has now relocated 7,520 html households and 1,913 . "Although some results have been achieved, we still cannot be taken lightly." A relevant person in charge of the Provincial Department of Natural Resources said that the main flood season this year has only begun soon, and there will be challenges of heavy rain in the future, and there is still a long way to go to prevent disasters.
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