A kind of transient electromagnetic wire frame for railway tunnel and using method

Abstract

The invention discloses a transient electromagnetic wire frame used for a railway tunnel and a use method thereof. The transient electromagnetic wire frame comprises a positioning frame which is formed by multiple positioning frame components which are fixedly connected through positioning frame connectors. The positioning frame connectors are provided with clamp slots for fixing receiving coils and transmitting coils. The side part of the positioning frame is connected with an adjusting support. An angle measurement device is fixed on the positioning frame. The bottom part of the positioning frame and the adjusting support is matched with a slide device. The positioning frame slides along the slide device to complete electromagnetic detection. The whole device is simple in structure, low in cost and easy to assemble and operate; the inclined angle between the positioning frame and a tunnel face and a base plate can be accurately measured by a tilt gauge and the angle measurement device so that the influence of onsite subjective judgment on detection can be avoided; and the receiving coils can be fixed on the positioning frame so that error of detection caused by handholding the receiving coils can be avoided.

Description

technical field [0001] The invention relates to a transient electromagnetic wire frame used in a railway tunnel and a using method. Background technique [0002] The transient electromagnetic transmitting coil is used to generate the primary field in the detection of transient electromagnetic method. In the tunnel transient electromagnetic method exploration, the fixation of the transmitting coil and the change of the placement angle of the wire frame have always been the difficulties that restrict the detection efficiency. [0003] At present, the commonly used method of fixing the transmitting coil in the tunnel is mainly fixed by an external bracket, which is generally inconvenient to carry, time-consuming and laborious to assemble, and there is no device for fixing the receiving probe, which affects the construction efficiency. In the transient electromagnetic detection of tunnels, there are often certain requirements for the angle between the wire frame and the tunnel ...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used method of fixing the transmitting coil in the tunnel is mainly fixed by an external bracket, which is generally inconvenient to carry, time-consuming and laborious to assemble, and there is no device for fixing the receiving probe, which affects the construction efficiency

In the transient electromagnetic detection of tunnels, there are often certain requirements for the angle between the wire frame and the tunnel surface. In the actual application process, operators often place them based on subjective analysis, without corresponding instruments to restrict them, which will affect the detection data. The accuracy of the data will affect the later data processing

The existing measuring device can only be placed in one position for measurement. When it is necessary to measure in other positions, the measurement device needs to be moved as a whole to complete the measurement. It is inconvenient to adjust, and the final result may be caused by personnel adjustment errors during the adjustment process. Not accurate enough

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