"Road multi-dimensional integrated detection system" down the city "monster"

[ China Instrument Network Instrument Development ] On August 7, a road in Shenyang, Liaoning Province collapsed suddenly, traffic lights fell into a 5 meter deep pit; on August 8, a water pipe in Kunming, Yunnan, ruptured, the road collapsed, sewage instilled; 8 On the 11th, heavy rain in Yan'an, Shaanxi, three cars fell into the 4m deep pit... The road collapsed, like a "monster" crouching down the city road, becoming a killer threatening people's lives.

In order to solve this problem, from August 8th to 10th, the National Urban Road Collapse Disaster and Road Disease Detection and Evaluation Technical Exchange Meeting and Technical Standards Public Meeting was held in Dalian, Liaoning Province. Many city experts and road experts gathered to discuss and solve together. Technical solution for road collapse problems. The “Digital Multi-Dimensional Integrated Detection System” proposed by Zhonggong Gaoke Maintenance Technology Co., Ltd. (referred to as Zhonggong Hi-Tech) became the focus of this conference.

Underground labyrinth

“The rapid development of the city has made the underground space of the road more and more complicated. The collapse of urban roads in China has occurred in recent years and has shown an increasing trend.” Chang Chengli, deputy director of the National Engineering Research Center for Highway Maintenance Technology, said that the road leads to the city. The reasons for the collapse are very complicated. For example, there are many kinds of pipelines under the urban roads, which are complicated and complicated, and the underground shopping malls and subways are intricately intertwined, making the underground space as maze-like and unpredictable. Another example is the sudden torrential rain that makes the foundation soil loose, and the underground pipeline leakage or water pipelines, drainage pipelines and other reasons, making the road collapse into urban dysentery.

Chang Chengli said that in the face of the collapse of the new urban governance problem, urban managers do not have systematic and scientific solutions at present. They are still in a state of urgency, and they are in a passive state of fatigue. A systematic, complete, scientific, and viable solution that predicts, evaluates, and disposes of road collapses in order to defeat the city's "monsters" and change the situation at a loss.

“In the industry, Zhonggong Hi-Tech is known for its rapid detection of road surface. In fact, as early as 2007, we started to study urban road inspection.” According to Chang Chengli, after nearly ten years of exploration, accumulation and development, Zhonggonggao Research has issued a multi-dimensional integrated detection system for urban roads.

Independent research and development of 3D ground penetrating radar to detect three-dimensional space

“The road surface rapid detection system solves the 'face' problem of the road, and the urban road multi-dimensional integrated detection system is used to explore the road's 'lizi'.” Chang Chengli said that the road multi-dimensional integrated detection system includes the front landscape, satellite Eight sub-systems such as positioning, road damage, road geometry, road surface deformation and shallow defect structure can quickly detect road environment, road surface and underground roadbed safety. Not only can the road surface technology be evaluated, but also the three-dimensional space can be detected and the structural layer sinking can be detected. The multi-dimensional integrated detection system of the road realizes the data obtained from the road collapse disaster detection and daily maintenance inspection, evaluates the road safety data, and processes the road collapse problem, which can prevent and control the road collapse and meet the urban road. The need for rapid detection.

In this multi-dimensional integrated detection system for roads, 3D ground penetrating radar is the core. It has been verified that 3D ground penetrating radar is faster, more practical and more effective in many technical means of exploring underground conditions. Chang Chengli said, "In the past, only Sweden, Italy and Norway could manufacture 3D ground penetrating radar. We can only rely on imported radar. Not only the hardware price is high, but the software is also limited by the port. Specialized development, and can not carry out data fusion. For this reason, we have developed the first 52-channel 3D radar and auxiliary analysis software with completely independent intellectual property rights in China for 4 years, making China the fourth in the world to master this. A country with a key technology.” Previous ordinary ground penetrating radars could only be used as single-section radar abstract waveforms, requiring technicians to have three-dimensional imagination and experience to analyze. The newly developed 3D ground penetrating radar can perform three-dimensional slicing of different layers, which can perform stereo analysis, reduce the analysis difficulty of technicians, and improve the accuracy of radar data. In the future, Zhonggong High-Tech will also turn sliced ​​images into digital stereo images.

Integrating prevention and control with tube maintenance and daily maintenance testing

In the multi-dimensional integrated detection system of the road, the hardware is matched with a complete set of solutions covering detection, evaluation, decision-making and disposal. It is the main purpose and key of the solution to prevent and control the road collapse and realize the integration of road collapse disaster prevention, early warning detection and daily maintenance inspection. This program can not only warn of road collapse disasters, but also achieve fine management of urban roads through data, save money, and improve the safety and service capabilities of urban roads.

"This system has been applied to Dalian urban roads and many domestic highways, and has achieved certain results. Our ultimate goal is to make urban road detection programmatic and standardized." Chang Chengli said that the system solves the problem of urban road collapse. Standardized equipment, technology and operating procedures are essential, from the maintenance decision of the urban road network to the specific maintenance design, to the implementation of risk prevention and control measures, if each step has clear specifications and operations, not only can the risk be eliminated In the bud, urban road managers can also face the sudden situation of urban roads more calmly.

In order to promote the standardization and popularization of urban road detection, Zhonggong Hi-Tech is establishing a national road support and disaster prevention technology industrial park in Bazhou City, Hebei Province. There are physical test roads, typical underground facilities and simulated test sites for urban roads. Chang Chengli told reporters: "Zhonggong High-Tech will cooperate with the China Urban Planning Association Underground Pipeline Professional Committee and other units to jointly promote the construction and use of the simulation test site, build a comprehensive research and application platform for urban road health and safety detection technology, and promote the city. Road integration rapid detection standardization development, training talents, and promoting the overall technological progress of the industry."

(Original title: Road multi-dimensional detection to the city "Monsters" City road collapse disaster prevention technology breakthrough