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Single-hole directional geological radar for tunnel advanced geological exploration

A technology of geological detection and geological radar, applied in the direction of electromagnetic wave detection, radio wave measurement system, instrument, etc., can solve the problems of poor orientation accuracy, system time accuracy, and inability to orient the azimuth of geological anomalies, so as to reduce interference, High time measurement accuracy, effect of reducing the amount of data transmission

Active Publication Date: 2014-04-16
山东百廿慧通工程科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] To sum up, the single-hole borehole radar has the following two problems: (1) The conventional single-hole borehole radar can only determine the distance of the reflector, and cannot give the azimuth of the geological anomaly; (2) the existing The single-hole directional ground radar has problems in the system time accuracy, and the orientation accuracy is poor in actual engineering

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  • Single-hole directional geological radar for tunnel advanced geological exploration
  • Single-hole directional geological radar for tunnel advanced geological exploration
  • Single-hole directional geological radar for tunnel advanced geological exploration

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] A single-hole directional geological radar for advanced geological detection of tunnels, such as Figure 5 As shown, it includes a radar antenna housing 1, a high-performance transmitting antenna 31, an orthogonal directional receiving antenna 30, and an electromagnetic wave transmitting, receiving and processing circuit 32. The front protective cover 27 and the rear protective cover 29 of the radar shell are convenient for installation and disassembly. A layer of soft foam material 35 with cushioning effect is installed on the outside of the radar shell cylinder 28, which can prevent the glass fiber reinforced plastic shell from being worn and pressed by foreign objects. Bad effect, described radar antenna casing 1 interior is equipped with high-performance transmitting antenna 31 that emits electromagnetic waves, orthogonal directional receivin...

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Abstract

The invention discloses a single-hole directional geological radar for tunnel advanced geological exploration. The radar comprises a radar antenna casing, a high-performance antenna, an orthogonal directional receiving antenna and an electromagnetic wave emitting, receiving and processing circuit. A front protection cover and a rear protection cover are added at the front end and the rear end of the radar antenna casing in a fixed or movable mode. The high-performance antenna for emitting electromagnetic waves, the orthogonal directional receiving antenna and the electromagnetic wave emitting, receiving and processing circuit are arranged in the radar antenna casing. The orthogonal directional receiving antenna sends received electromagnetic waves to the electromagnetic wave receiving and processing circuit. The orthogonal directional receiving antenna is divided into 4 parts through partition plates, a receiving antenna unit is arranged in each part, and four independent receiving units with phase differences are formed. The radar has the advantages that fine exploration of geological conditions and accurate positioning of azimuth angles within certain range around drill holes can be achieved.

Description

technical field [0001] The invention relates to a single-hole directional geological radar, in particular to a single-hole directional geological radar for advanced geological detection of tunnels. Background technique [0002] Borehole radar method is a broad-spectrum electromagnetic technology to determine the distribution of underground media. The transmitting antenna and receiving antenna are placed in the same borehole with a fixed distance. According to the two-way travel time, amplitude and waveform data of the electromagnetic wave at the receiving end, it can be inferred that The structural characteristics of the underground rock-soil medium. The interpretation of the borehole radar is to determine the geological characteristics of the reflected wave group through the tracking of the event axis in the geological radar image section obtained after data processing, according to the waveform and intensity characteristics of the reflected wave group. Advanced geological...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12G01S7/02
Inventor 李术才李尧刘斌徐磊聂利超孙怀凤刘征宇宋杰林春金孟晗赵相浩牛健
Owner 山东百廿慧通工程科技有限公司
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