Nanjing went all out to keep the rivers and lakes safe
Release time:2020-07-15 Views:164
On July 12, the water level of the Yangtze River broke the "10-meter mark" and reached 10.03 meters at 15:35, the third highest level in history and 1.33 meters above the warning level. The water level of the lake reached 12.34 meters, the third highest on record. A week ago, the water level of the Suiyang River reached the third-highest level ever (13.10 meters on July 7), following 13.80 meters in 1999 and 13.64 meters in 2016. "Two rivers and one lake are standing at the third highest level in history, Nanjing flood control situation is severe, flood control operation mechanism to the most critical moment." City flood and drought control headquarters director Li Zongchao frankly.
People first, life first! To ensure the stability of rivers, lakes, embankments and the city's flood season safety, Nanjing heard "flood" and move, united, go all out.
Smell "flood" and change, 3 upgrades in 5 days, constantly sound the emergency alarm
The word "rain is relentless" is best used during this year's flood season.
Li Zongchao used several words to describe this year's Mei Yu as "historically rare". According to reports, this year on June 10, the city officially into plum, 12 days after the emergence of multiple rounds of heavy rainfall, as of July 11 13, the city's cumulative plum rainfall 246.5-745.5 mm, and uneven distribution of time and space, Jiangning, Pukou, the main city, Lishui, Gaochun and other parts of the rainfall more than 500 mm, is the perennial plum rainfall (about 250 mm) more than 2 times, It is rare in history. Among them, on June 15 from 5 a.m. to 10 o 'clock, Jiangning Lulang, Tao Wu, Binjiang, Pukou Wujiang and other areas of heavy rain, the maximum daily rainfall in Jiangning District Lulang primary School 271 mm, a Jiangning District since the meteorological record in 1960 the maximum daily precipitation; A total of 221 millimeters of rain fell for three consecutive hours.
Local rounds of heavy rainfall, the upstream water, coupled with the impact of astronomical spring tides, resulting in the Yangtze River, Shuiyang River, Qinhuai River, Chuhe River, Shiwu Lake, Gucheng Lake and other water levels have been rising for days.
Flood situation is the command, with the Qinhuai River, Shuiyang River, Yangtze River and other water levels continue to break the warning line, the city flood control emergency response level is also constantly upgraded -
On June 16, the Qinhuai River exceeded the warning water level, the city started the IV emergency response of the Qinhuai River basin. According to the plan, the patrol duty was strengthened, the engineering scheduling was done well, and the dangerous situation was immediately dealt with and reported in time;
At 12 o 'clock on July 3, the city started the Shuiyang River basin flood control Ⅳ emergency response;
On July 6, the water level of Xiaguan Station of the Yangtze River in Nanjing reached 8.75 meters, with the alarm exceeding 0.05 meters. According to Nanjing Flood Control Emergency Plan, Nanjing started the emergency response for flood control level IV (blue) from 9 am on the same day. At 20 o 'clock that day, the water level of Shuibiqiao Station in Shuiyangjiang River reached 12.27 meters (warning water level 10.50 meters), exceeding the warning water level of 1.77 meters. From 21 o 'clock, the city started the emergency response of Shuiyangjiang regional flood control II (orange).
At 9 am on July 7, Nanjing Xiaguan Station of the Yangtze River water level reached 9.32 meters, exceeding the alert by 0.62 meters. At 10 am on the same day, the city started the level III emergency response, and the Shuiyangjiang area entered the level I emergency response from 8 am on the same day.
The water level at Xiaguan Station of the Yangtze River in Nanjing reached 9.77 meters at 14:00 on July 10, exceeding the warning level of 1.07 meters. From 15:00 on the same day, the city's flood control II emergency response (orange) was activated.
The response level is constantly adjusted, the city's flood control measures are also constantly upgraded -
Nanjing Flood Control and Drought Control Headquarters located on the 6th floor of the Municipal Water Bureau is the city's flood control command center. Every day, officials and experts from various departments, including water, hydrology, meteorology and transportation, gather together to analyze and judge weather satellite cloud images and water monitoring data displayed on a large screen. Study and judge, discuss, issue various response transfer orders...... It's lit up 24 hours a day for many days.
"After Class III emergency response, especially Class II emergency response, the frequency of consultation and reporting will be further encrypted. The municipal Meteorological Bureau will report the weather situation of the city and surrounding areas twice a day, and report any emergency at any time; The report, published three times a day, predicts changes in lake levels in the Yangtze, Qinhuai and Shuiyang rivers over the next three days. The city defense Office held a daily video dispatch meeting in each district, timely notified the relevant situation to facilitate the flood control decision-making, and implemented the defense response work in advance..." Li Zongchao described the daily work as like a war, with many experts and heads of the city's defense department not returning home for days.
Smell "flood" and travel, 24 hours guard the dike, to ensure that the levee intact
The response level is constantly adjusted, and the strategy of dike inspection changes accordingly. At present, in the Yangtze River levee, Qinhuai River on both sides of the flood control points, thousands of people are guarding the dike 24 hours shift inspection.
"In accordance with the" Urgent Notice on the Current Flood Control Work "and" Notice on Strengthening inspection of embankments along the Shuiyang River ", we require all districts to strengthen inspection of major rivers, reservoirs, sluice pump stations, etc. Emergency supplies such as key areas, dangerous embankments and emergency gate stations have been prepared in advance, lighting facilities have been set up on site, and personnel are on duty 24 hours a day." Li Zongchao introduced that the duty inspection must be comprehensive coverage, not only to inspect the water slope of the dike, the back slope, but also to inspect the foot of the dike, to see if there is no scattered immersion point, there is no seepage, piping may occur.
Pukou District Qiao Lin Street Gaowang River is a river channel. On July 10, the reporter saw that more than 10 trucks loaded with rubble, sand, wood, straw and other emergency supplies were on standby at the scene, and volunteers guarding the dike were going back and forth. Wei Xiuyan, the inspector of the dike, was on duty on the 5th of this month, and several other volunteers were responsible for patrolling the 3.5km long dike, "patrolling twice in the morning and twice in the afternoon, and the number of steps every day is more than 30,000." Wei Xiuyan said, patrol dike is not a simple walk to see, but a careful look, they have a special equipment - stick, in the inspection of the foot of the dike on it to push away the overgrowth of weeds, "patrol dike, not the slightest careless".
Due to the complex terrain at the bottom of the river, Dashengguan No.1 section of the Yangtze River dike is one of the four key sections for flood control this year. Tianhou Community of Yuhua Economic Development Zone is an important person responsible for guarding the dike. In recent days, more than 30 staff members of the community are all on duty. As the Level II emergency response was activated on Monday, the number of patrol personnel in the area increased from 31 to 60, and the number of flood control points was reduced from one per 1 kilometer to one every 500 meters. In order to timely respond to emergencies, the community also reserves 30 assault personnel. The two red flags erected on the river are called "message tree" and "reassuring pill" by the dike keeper. "It's a warning that this is a dangerous place, but it's also an important reminder of the safety of the levee. If there is any collapse of the embankment below, the flag will fall." Miao Jing, deputy director of the community, with the flag, safety, we are in, safety is in! This expression describes the determination to fight against the flood.
The water level of the Shuiyang River not only exceeded the warning level, but also exceeded the guaranteed level for several days, and the flood control pressure was much greater than in any other area. Here, a flood control point is set up every 500 meters, and the flood control personnel patrol the dikes 24 hours a day by using the "water tag" patrol method. On October 10 alone, 1,310 people were dispatched to patrol the dikes, and 76 trucks loaded with supplies, 22 transport vehicles, 6 excavators and 2 ships were on standby.
In the Liuhe section of the Yangtze River, a team of more than 600 people, including district-level departments, streets along the river and community residents, gathered here to patrol the dikes around the clock and guard the safety of the dikes with "iron feet".
Ensure that the levee intact, from the city to prevent the statistics show that on July 6, the city flood control level IV emergency response since, has been dispatched to the cumulative personnel of nearly 40 thousand people, more than 3000 vehicles.
Precise operation will be carried out to empty reservoirs to contain 200 million cubic meters of flood water
Not only did the rainy season come early this year, but it also went late. Nanjing is Meiyu period, facing up to more than 80 thousand cubic meters/second flow crazy discharge, flood control can be described as "double nip". When the water level of the Yangtze River does not go down, the water level of the inland river will remain high. Once there is continuous heavy rainfall, the water level of the inland river will rise rapidly, bringing great pressure to the flood control of the city.
Nanjing, where the Yangtze River runs through, has a well-developed water system with 251 reservoirs, large and small, and more than 120 key watercourses. They have always been an important position for flood control and drainage in the city. Before the flood this year, the city will be on the size of the reservoir water level pre-drop, into the plum after further increase the air efforts. After July 1, when the water level of the Yangtze River rose significantly, the municipal control headquarters seized the "low tide" period again and implemented precision operation of the Wudingmen Gate and Qinhuai Xinhe River Gate, etc., opening and closing the gate four times a day to drain the flood water of the Qinhuai River to the Yangtze River. At the same time, the Qinhuai River Xinhe Pump Station (50 cubic meters per second) pumped the flood water of the Qinhuai River to 210 million square meters, reducing the pressure of the rising water level of the Qinhuai River. Considering the recent continuous rainfall, the water level of Xuanwu Lake dropped from 9.75 meters to below 9.65 meters and the water level of Crescent Lake dropped from 9.47 meters to about 9.3 meters on July 5, and the storage capacity was emptied in advance. July 9, again dispatch Lishui, Jiangning district to convenient, Zhongshan, Zhaocun and other six medium-sized reservoirs for pre-reduction, according to the flood limit water level of no less than 0.4 meters control. At the same time, after the flood control level IV emergency response, the city timely closed and blocked the main pump gate along the river. It is reported that up to now, has accumulated 200 million cubic meters of flood water storage and drainage, for the city to win an important position.
Be prepared to fight and ensure that you can "draw, use and win"
Do not fight unprepared battle, rain is ruthless, but Nanjing flood control has "strategy".
Based on the "flood prevention, anti drought, grab big risk, rescue disaster" requirements, this year into the flood before the city to prepare for a rainy day with a sense of urgency to advance the solid preparation work -
Strictly implement the administrative head responsibility system for flood control and drought prevention, sign the 2020 responsibility certificate for flood control and drought prevention with all districts, revise and distribute the work responsibilities of the member units of the Municipal flood control headquarters, and consolidate the responsibilities of the member units of the District and municipal flood control headquarters. The list of persons responsible for the safety of district-level flood control and drought relief, regional rivers and lakes, urban flood control, typhoon prevention and reservoirs shall be published to the public.
To organize the inspection of urban drainage pipe networks, rainwater Wells and other drainage facilities. Before flood, a total of 1,557 kilometers of main pipe drainage, 582 kilometers of branch pipe drainage, 91,000 manhole cleaning, rain grate cleaning and repair 123,000; Combined with the improvement of the water environment in urban river channels, about 120 kilometers of river channels have been dredged, and about 780,000 square meters of earth have been removed. In accordance with the principle of "one case at a time", emergency measures have been drawn up one by one at 26 major urban flood prone points to meet the needs of emergency flood drainage.
Before the flood, the city supplemented the emergency supplies and equipment. The city had a total of 5.98 million pieces of "three bags" for flood control, 427,000 square meters of geotextile, 238,000 tons of stone, 3,498 square meters of wood, 65 sets of urban waterlogging mobile pump trucks, etc. Relying on the power of water affairs, construction Commission, urban management and fire protection, the municipal government has set up 35 emergency patrol forces with 2,118 members, and all districts have put in place 268 patrol teams with 11,208 members. The municipal and district governments have held many flood control and drainage rescue drills to ensure that they can "draw, use and win" in case of emergencies. After the start of flood control II emergency response, the municipal defense Office and the relevant units again made contact, the implementation of the relevant flood control and rescue team preparation, the Nanjing Garrison area to implement the 179 brigade 2000 people, the Nanjing Armed police detachment of the first echelon 200 people, the second echelon 400 people, the city fire and rescue detachment 7 brigade 220 people, the municipal construction Commission 10 construction teams 1000 people, Obey the unified dispatch of city prevention and control......
Flood control, not only manpower, material resources, related water conservancy, flood control construction is an important guarantee.
Standing in the high Wang River dike, bridge forest water station master Zhan Cunlong with a lot of emotion, "In 2018, the dike in accordance with the standard engineering risk reinforcement, the dike increased more than 1 meter, 2 meters wider, withstand the flood situation let us have a little more confidence."
In recent years, our city has continuously increased the flood control and water conservancy project construction, based on the "construction is more important than prevention, prevention is more important than robbery, robbery is more important than rescue", through increasing the construction of projects, improve the flood control standards of embankments and reservoirs. Especially after 2016, our city further increased the investment in flood control function, and invested heavily in some dangerous sections in 2016 to ensure the elimination of embankments in place. A number of river basin control projects have been completed, including the regulation of Baguazhou branch of the Yangtze River, the emergency control project of the Yangtze River bank collapse, the recent improvement of Chuhe River flood control project, the flood control improvement project of Gucheng Lake of Shijiu Lake, the embankment reinforcement project of Shengli Wei Section of Shuiyang River Main Stream, the embankment reinforcement project from Northwest Village of Qinhuai River to Zhonghe Bridge section, and the embankment reinforcement project above the bridge of Jiangjunda Road of Qinhuai River. Reinforce 237.27 km of main stream embankments. The channel dredging of Qixia Section of Jiuxiang River in the pilot section of the first phase of the Qinhuai East River Project was carried out, Jiuxiang River sluice Station was completed, and the dike reconstructing of Yonglianwei section of Gucheng Lake and the dike strengthening works of Gaoxuanwei section of Shuiyang River were carried out. Fifteen major provincial river channels, including Gaoyang River (Jurong South River), 800 River (railway sections and upper sections), Yigan River (Jiangning and Lishui sections), and Nanhe River, were repaired, with a length of 42.25 kilometers and embankments reinforced for 129.85 kilometers. The Jianglin Gate, Zhoujiashan Gate and Banqiao Gate were strengthened, and the Xinyu River Gate and Tiansheng Bridge gate were dismantled and built. 30 key reservoir-dams were strengthened, and the seepage treatment of 68 reservoirs and 690 key and non-key river channels were eliminated from danger.
"Although our flood control capacity continues to improve, but in the Yangtze River, Shuiyang River, Shiwu Lake are at the third highest level in the history of the severe situation, we still need to prepare for all kinds of response, nip in the wind, to protect people's lives and property safety." Li Zongchao said.
Rain merciless, strong flood control. Nanjing is with the most stringent requirements, the most practical style, the most difficult measures, determined to win the flood control battle!
Article source: Nanjing Daily