An anti-interference air-ground UAV electromagnetic exploration method for the seepage channel of a barrier dam

Abstract

The invention relates to an anti-interference air-ground unmanned aerial vehicle electromagnetic exploration method for a seepage channel of a barrier dam, which belongs to the technical field of geophysical exploration. This method is based on the electrical difference between the underground target good conductor and the surrounding rock and soil, and judges the position of the leakage channel by measuring the magnetic field change formed by the applied primary electric field. Channel electromagnetic prospecting methods. The present invention mainly includes ground system and unmanned aerial vehicle system two parts, and ground system comprises two parts of remote control communication device, pseudo-random current emission system; data logging device. In addition, the present invention also proposes a scheme for judging the internal conditions of the barrier dam based on the abnormal magnetic field, and uses the abnormal field to calculate and quantify the magnetoresistivity value, providing a reference for detecting the existence of leakage channels inside the barrier dam.

Description

technical field [0001] The invention relates to the field of geophysical detection, in particular to an anti-jamming air-ground UAV electromagnetic exploration method for seepage channels of dams, belonging to the technical field of measurement and testing. Background technique [0002] In recent years, with the development of the economy, the barrier dam has been vigorously developed as a new water conservancy project, and it has gradually attracted people's attention because of its low cost. Due to the complex internal structure of barrier dams, there are generally safety hazards such as leakage channels; and due to the complex terrain formed by them, there are often construction safety problems. Therefore, the detection of seepage channels has always been the focus and difficulty in solving the safety problems of barrier dams. [0003] At present, electrical prospecting is an effective technical method for detecting seepage channels. However, since barrier dams mostly oc...

AI Technical Summary

Problems solved by technology

However, the magnetometer is extremely susceptible to external noise, so the signal-to-noise ratio of the UAV equipment will be reduced, which will affect the detection results

Therefore, the accuracy of traditional airborne electromagnetic survey technology is often difficult to meet the requirements

[0005] In short, the ground electromagnetic prospecting technology is difficult to meet the geological conditions of the dam occurrence area, while the signal-to-noise ratio of the traditional airborne electromagnetic prospecting technology is too low, and its accuracy cannot meet the engineering requirements

Images