Road surface pothole detection scheme
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Hollow road surface
With the continuous development and utilization of urban underground space, especially large-scale subway construction, geological conditions have become unusually complex, and cases of ground subsidence and sinking are constantly occurring. In busy city roads, ground-penetrating radar has become one of the main detection technologies for the rapid and accurate early warning and precise detection and location of dangerous road voids.
Ground-penetrating radar (GPR) is a geophysical method that uses high-frequency radio waves to determine the distribution pattern of substances within a medium. It uses broadband electromagnetic waves in pulse form to detect subsurface objects or structures that are not visible. GPR is a relatively new geophysical method. It obtains relevant profile images by continuously moving the antenna along the survey line, transmitting and receiving electromagnetic wave reflection signals through the antenna.
This detection uses the BD-GPR ground-penetrating radar produced by Wuhan Bodiang Technology. According to the on-site detection depth, we select a 400MHz working antenna to detect ground voids.
Product Features:
(1) This product adopts an industry-leading integrated design of the host and antenna, with small size, light weight, and low power consumption;
(2) The host and computer are wirelessly connected, making operation convenient;
(3) Real-time data acquisition and display are achieved;
(4) The software interface is simple, easy to operate, and quick to learn;
(5) Multiple frequency antennas are optional, with a wide range of applications;
(6) The analysis software is easy to operate, and the results are accurately interpreted;
(7) High detection accuracy and accurate positioning;
(8) Built-in ultra-large capacity battery, long battery life;
A total of four survey lines were arranged this time, three longitudinal and one transverse. The test results are shown in the figure below:
The results of this detection work are: The total length of this survey line is 15 meters. A total of suspected 2 unconsolidated areas were found, 1 void (devoid) areas.
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