Coal mine underground roadway transient electromagnetic stack advanced detection device and method

A transient electromagnetic and advanced detection technology, applied in measurement devices, electrical/magnetic exploration, radio wave measurement systems, etc. Problems such as limited detection depth to achieve the effect of analysis

Active Publication Date: 2017-07-21
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] Due to the presence of roadheaders, drilling rigs and other metal machinery at a short distance behind when coal mine excavation works, it will bring great influence on the metal body and electromagnetic interference to the transient electromagnetic detection. On the other hand, the original mine transient electromagnetic advanced detection technology has a limited detection depth, which does not meet the needs of rapid excavation that ...

Method used

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  • Coal mine underground roadway transient electromagnetic stack advanced detection device and method
  • Coal mine underground roadway transient electromagnetic stack advanced detection device and method
  • Coal mine underground roadway transient electromagnetic stack advanced detection device and method

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Embodiment

[0054] Such as figure 1 , the transient electromagnetic device of the coal mine underground tunnel in this embodiment includes a multi-channel parallel transmitter, a transmitting wire frame, a three-component receiving probe, a multi-channel A / D acquisition device, an embedded CPU and a USB2.0 interface.

[0055] The transmitting device of this embodiment is a multi-turn square small wire frame vertically placed at the head-on face of the well to explore the position of the water discharge drilling hole; the side length of the wire frame is not more than 5m, and the number of turns is not less than 10 turns; the receiving device is a The three-component probe in the borehole, the three-component receiving probe is connected with the multi-channel A / D acquisition device, and the high-performance embedded CPU and the multi-channel A / D acquisition device are controlled through parameter setting.

[0056] The three-component probe detects one vertical component and two orthogonal...

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Abstract

The present invention belongs to the coal mining geophysical prospecting technical field, relates to a transient electromagnetic stack advanced detection device and method, in particular, a coal mine underground roadway transient electromagnetic stack advanced detection device and method. According to the device and method of the invention, a probe is arranged in a borehole, so that the probe can be far away from interference sources such as metal machineries in a roadway, and therefore, the influence of the interference sources can be avoided; the hole drilling conditions of a coal mine tunneling face are fully utilized, so that inside-roadway coil emission and inside-borehole three-component receiving can be realized; and a receiving device can move towards a direction before the tunneling face, and therefore, various kinds of the interference of the metal machineries at the tunneling face can be avoided without affecting the tunneling work of a mine party, and the advanced detection data of a plurality of positions in the borehole can be subjected to stack processing, and processing results can be displayed, and thus, hidden water damage geological bodies before the tunneling face can be predicted at an extra long distance.

Description

technical field [0001] The invention relates to a transient electromagnetic advanced detection device and method, which belong to the field of coal mining, and in particular to a transient electromagnetic superimposed advanced detection device and method for underground tunnels in coal mines. Background technique [0002] At present, with the continuous increase of coal mine mining depth, the advanced detection of water-bearing structures is of great significance to the safe production of coal mines. The mine transient electromagnetic advanced detection method has become one of the most commonly used underground water detection methods. The transient electromagnetic method is to send a pulsed or square wave primary electromagnetic field underground by using an ungrounded return line or a grounded electrode, and observe the secondary electromagnetic field generated by the underground eddy current induced by the pulsed electromagnetic field with a coil or grounded electrode. T...

Claims

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Application Information

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IPC IPC(8): G01V3/10G01V3/38
CPCG01V3/10G01V3/38
Inventor 范涛王继矿李博凡赵睿赵兆刘磊李德山鲁晶津宁殿艳
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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