Since June, with the rising temperature and uncertain weather, the main flood season in our city is accelerating.
If you want to do a good job, you must first sharpen your tools. In order to do a good job in flood prevention and preparedness in 2024, the Drainage Management Office of the Municipal Urban Management Law Enforcement Bureau has taken precautions and carried out various pre-flood preparations in a comprehensive and orderly manner. Now, with the help of science and technology, robots can accurately detect hidden dangers in the pipe network, CIPP trenchless technology performs "minimally invasive surgery" on the pipeline, and the "smart system" monitors the urban drainage situation in an all-round way...... The use of a series of "artifacts" has made our city "deaf and clear-sighted" in this year's flood control work.
Stormwater network "CT"
"Minimally invasive surgery" to help
"Pay attention to the surrounding vehicles, let's try to test this place before the morning rush hour." Early in the morning of June 28, Li Wei, a staff member of the Drainage Management Office of the Municipal Urban Management Law Enforcement Bureau, and his colleagues began to be busy.
With the help of tablets and long periscopes, they observed the debris accumulation in the rainwater branch network. Soon after, the new all-terrain robot was also "sunk" into the pipe network, and Li Wei and his colleagues only needed to operate the remote control to observe the situation in the pipeline in real time and accurately find out whether there was a blockage.
Crews inspect the underground pipe network with pipe periscopes.
"These two 'black technologies' are the 'top students' in detecting the condition of pipelines, and they have helped us a lot in the pipeline dredging work." Li Wei told reporters that generally speaking, after a winter of siltation, there will be more silt and garbage in the rain and sewage pipe network, so since the beginning of spring, they have inspected and maintained the main and secondary sewage pipes within the jurisdiction one by one, and cleaned up the easy to block and easy to rise points in time, so as to avoid the occurrence of sewage overflow caused by pipeline blockage when heavy rain comes.
"One inspection is not enough, you have to 'look back' over and over again." Li Wei added that as the flood season approaches, a short period of heavy rainfall and strong winds will cause a lot of leaves and garbage to gather in the water intake or manhole cover. For some pipes that have fallen into disrepair, they have to step up inspections. Li Wei quipped that they were like "tailors" who were responsible for repairing the city's pipe network, carrying out pipe network maintenance everywhere.
"No, a few days ago, when we were inspecting, we found that the rainwater pipeline of Yimin Street was seriously damaged and blocked, and there was a risk of road collapse, and if it was not repaired in time, it would affect the normal drainage during the flood season." Li Wei said that during the college entrance examination, if the original pipeline needs to be removed and replaced and the road surface restored according to the normal construction process, not only the construction process is cumbersome and the construction period is long, but also brings inconvenience to residents and school students in nearby areas.
At that time, Li Wei and his colleagues were faced with two facts: the pipeline had to be repaired, but it was difficult to repair the pipeline. After many on-site inspections and studies by department leaders, it was finally decided to use the ultraviolet curing CIPP trenchless repair process for construction.
"This is our new application of technology this year, this process adopts the underground interspersed method, eliminating the links of erection, flipping, water, etc., the working surface is small and does not affect the normal passage of vehicles, compared with the traditional excavation pipe network, it has the advantages of high construction controllability, good sealing effect of lining pipe and shortening the construction period and saving construction costs." Li Wei said that a total of 200 meters of pipe network section, after the new technology was adopted, the off-peak night construction was completed, which lasted only five days.
At present, the Drainage Management Department of the Municipal Urban Management Law Enforcement Bureau is responsible for the maintenance and management of the city's 1,266 kilometers of municipal rain and sewage pipe network, and with the help of new technologies, countless drainage people have done enough "foot work" for the city, making the huge drainage pipe network buried in the ground more powerful, and invisibly taking on the city's drainage responsibilities.
With the help of a smart "brain"
Let flood control work be "deaf and clear"
A few days ago, a short-term heavy rainfall made people feel the breath of the summer rainy season in advance. The Drainage Management Department of the Municipal Urban Management Law Enforcement Bureau carried out a full-element, full-process, full-linkage actual flood control drill in a timely manner against the background of rainy days.
The staff is in the smart drainage command hall.
In the smart drainage command hall, the staff sits in front of the computer, clicks the mouse, and the real-time monitoring screen of the main intersections, important areas, water hidden danger points and key river basins and other areas in the jurisdiction is displayed on the command screen from time to time, and the rainfall, water and drainage are at a glance, which truly realizes "one screen to view the world, one key to manage the overall situation".
The staff is in the smart drainage command hall.
"Dut...... Honk...... "......With the water level sensor under the South China Tunnel Bridge sensing the rise of the water level, a red emergency warning appears on the smart screen and an alarm sound is issued, indicating that the water level under the bridge is high, and the system immediately generates a work order and dispatches the task to the relevant staff. At the same time, the management also received a red alert message in the mobile app.
"In the past, when it rained, we wanted to grasp the situation of water accumulation everywhere, all relying on personnel to patrol the road in a hurry, but now using the monitoring function of the 'smart drainage' platform, the staff can quickly grasp the city's precipitation and drainage through real-time video patrol through the camera, and can respond to sudden abnormal situations in a short time." Dong Shuxian, chief engineer of the Municipal Drainage Management Office, told reporters that they used the urban waterlogging monitoring system to install electronic water draft and LED display screens on 9 underpass overpasses such as the North Ring Road, the South Ring Road, the People's Republic of China, and Congtai and other 9 underpass overpasses, and released the water depth data under the bridge in real time through the LED screen at the bridge, timely reminding pedestrians and vehicles to travel safely, and when the water under the bridge reaches the limit level, it is linked with the traffic police department to organize the cut-off of traffic in time to ensure the safety of pedestrians and vehicles.
"In the past, in the middle of summer, a short period of heavy rainfall often relied on manual inspection to find the water point, which was inefficient and slow, but now the monitoring personnel can find and deal with the problem in time through the monitoring system." Dong Shuxian added that the smart drainage dispatching system has been gradually improved according to the functional requirements, relying on the Internet of Things technology, wireless communication network, automatic control system and other technologies, which can not only realize the online remote monitoring and scheduling of the rain and sewage system, but also make their post-treatment become pre-prediction and layout, saving the time for emergency response after heavy rain or heavy rain.
"Whenever there is rain in the forecast, the rescue personnel, vehicles and equipment are all in place in advance, and the bridge protection personnel arrive at the designated locations of the roads and bridges in advance, and all personnel carry out flood control work in accordance with the emergency plan to ensure the safety of pedestrians and vehicles." Dong Shuxian told reporters that now, with the help of "black technology", the department through the meteorological monitoring system, real-time grasp of rainfall data and early warning information within the main urban area, according to the intensity of rainfall in different regions, targeted deployment of personnel, can effectively deal with rain, flood, to ensure the safety of the city through the flood.
Handan News Media Center reporter Xue Yalan