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Recently, when the reporter came to the scene, technicians were laying the road area water detection sensors under the hot sun, and together with the cameras under the railway bridge and above the slope, a real-time monitoring system for dual transmission of video and data was constructed. This intelligent monitoring system will change the way the low-lying road sections of the Beijing-Hong Kong-Macao Expressway used to be visually judged by the naked eye.
Realize real-time video monitoring on low-lying road sections
The Beijing-Hong Kong-Macao Expressway is a low-lying section of 1 km long, with four railway bridges and highway bridges across the highway.
Yesterday, at the top of the slope protection on the west side of the railway bridge, a white spherical camera was installed in place. "The camera can rotate 360 ​​degrees to monitor the low-lying road sections near the railway bridge as a whole." The technician who is debugging the probe said.
Under the railway bridge, cameras were installed on both the east and west sides, respectively, and the scales for measuring the depth of water accumulation were aligned with the roadside.
In the newly added monitoring room of Nangangwa Pumping Station, the modern video monitoring system has entered the debugging state, and the real-time picture of Beijing, Hong Kong and Macao high-speed vehicles flying is displayed on the LCD screen. The monitoring staff clicked the mouse, the monitoring screen began to scan the scene in high definition, and the rain grate of the roadside drainage system was all clear.
The Nangangwa pumping station equipped on the road section has undergone large-scale renovation inside and outside. In the pumping station, the equipment in the pumping room has been updated. During the flood season, a group of emergency rescue units will also be put in to guard against excessive water accumulation and threaten the normal operation of the pump room. "As long as there is rain, regardless of the amount of rainfall, we will specially send maintenance personnel to be on duty under the bridge." Relevant person in charge of the first maintenance company said.
Accumulation of water through the warning line automatically closes the road
"Video monitoring is not enough to accurately display the water accumulation." Zhang Jiaji, manager of the mechanical and electrical project of the first maintenance company, told reporters that in order to control the water depth of the road area in real time, the monitoring system of the Beijing-Hong Kong-Macao Expressway has deliberately added a data transmission function to automatically detect water accumulation by sensors. Depth, this is the first attempt on Beijing Expressway.
Following three technicians, the reporter came to the central green belt of Beijing-Hong Kong-Macao Expressway. "This is the lowest point of the large groove section." In the direction of the fingers of the technical workers, at a distance of more than 20 meters from the railway bridge, a square and square stone sink like a stone box was placed on the green belt and the bottom of the sink. It is exactly flush with the road surface.
A sensor that looks like a microphone is connected to the wire pre-buried next to the sink. If water accumulates on the road surface, the sensor can measure the exact depth of water accumulation based on the change in water pressure and transmit it in real time.
In order to connect the small sensors to the monitoring system of the pumping station, the construction personnel painstakingly laid more than 700 meters of line transmission lines from the pumping station, bypassing the highway bridge 200 meters away, and then passed through the green belt. In order to prevent rainwater erosion, the line was also firmly covered with a layer of galvanized steel pipe, and then buried in the soil.
"Once the water level exceeds the warning line of 27 cm, the monitoring system will automatically send an alarm message to the command platform and send a mobile phone call to the relevant business person in charge." The relevant person in charge of the first maintenance company said that the sensor is also installed on the roof of the Nangangwa pump station , You can measure rainfall in real time, so as to take targeted drainage measures.
Drawing on the lessons learned from the large number of vehicles stranded on flooded roads last year, the SFG has also prepared early warning and emergency countermeasures during the flood season. Once the water in this section exceeds 27 cm, road closure measures will be taken immediately to prevent more vehicles from entering the highway. At the same time report to the superior and cooperate with the traffic control department to open the U-turn valve or take other vehicle diversion measures.
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