Ground-penetrating radar device used for detecting boulder in single hole and detection method thereof

Abstract

The invention provides a ground-penetrating radar device used for detecting a boulder in a single hole and a detection method thereof. The ground-penetrating radar device comprises a radar antenna, a ground-penetrating radar host, and a computer connected with the ground-penetrating radar host. The radar antenna comprises a transmitting element and a receiving element, which are connected with the radar host by leads. The receiving element is disposed on the upper part or the lower part of the transmitting element. A distance between the transmitting element and the receiving element is at least one meter. The transmitting element and the receiving element are fixedly integrated into one body by adopting non-metal materials, and an electromagnetic wave transceiving device is formed. The ground-penetrating radar device is advantageous in that the radar antenna is inserted in a drill hole, and is cooperated with the ground-penetrating radar host and the computer to detect the boulder on the periphery of the drill hole (a radius is within 5meters), the size of the boulder, and the distance between the boulder and the drill hole accurately, and the ground-penetrating radar device can be used for a tunneling project.

Description

technical field [0001] The invention belongs to the field of geological exploration, and relates to a ground-penetrating radar device for single-hole detection of boulders and a detection method thereof. Background technique [0002] China's urban subway construction has entered a stage of rapid development. In the southern region, almost all subway constructions encounter boulder groups. Undiscovered boulder groups will bring major safety hazards to the subway shield construction. Not only will the shield cutter head be frequently stuck or even seriously deformed, the delay in the construction period will cause huge economic losses, and in severe cases, it will also cause the working face to spew and collapse. cause sudden geological disasters. Therefore, boulder detection is a key technology in shield tunneling construction, an important means of safety risk control, and can provide a basis for taking engineering measures in advance. [0003] Drilling and geophysical pro...

AI Technical Summary

Problems solved by technology

The detection depth of the surface detection method is limited, while the cross-hole CT scanning method needs to use two boreholes at the same time, and there are also shortcomings such as local blind spots, long test time and high cost.

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