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Electric source towed electromagnetic detection device and method in deep urban underground space

A technology of electromagnetic detection and electrical source, applied in the direction of measuring devices, electric/magnetic exploration, geophysical measurement, etc., can solve the problems of limited application of urban measurement, and achieve the effect of making up for the lack of depth and large emission magnetic moment

Active Publication Date: 2021-04-13
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an electric source towed electromagnetic detection device and method in urban deep underground space, which is used to solve the problem of limited application in urban surveying

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  • Electric source towed electromagnetic detection device and method in deep urban underground space
  • Electric source towed electromagnetic detection device and method in deep urban underground space
  • Electric source towed electromagnetic detection device and method in deep urban underground space

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Embodiment Construction

[0061] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0062] See figure 1 It shows a schematic diagram of a launch system of an electric source towed electromagnetic detection device in deep urban underground spaces of the present invention; a launch system of an electric source towed electromagnetic detection device in deep urban underground spaces, the system includes: a main control module 1. Battery 2, GPS module 3, host computer 4, switch drive module 5, switch module 6, three-phase generator 7, three-phase controllable rectifier source 8, DC-DC module 9, protection diode 10, PWM drive module 11 , H-bridge transmitting module 12, grounding long wire 13, current sensor 14...

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Abstract

The present invention relates to an electrical source towed electromagnetic detection device and method in deep urban underground space. The measuring line set in the urban area moves; the transmitting system includes a long grounding wire, which is excited to generate a primary field through the long grounding wire; the receiving system includes a three-component receiving coil to receive the secondary field signal; and the dragging used in the city Compared with the shallow sounding depth of the transient electromagnetic central loop device, its emission magnetic moment is large, and the detection depth can reach 500m or even deeper, which makes up for the lack of depth under the small loop excitation method, and will be used for the deep urban underground development and utilization. Ascertain the geological conditions.

Description

technical field [0001] The invention relates to the field of geophysical prospecting electromagnetic detection, in particular to an electrical source dragging type electromagnetic detection device and method in deep urban underground spaces. Background technique [0002] With the increase of urban resident population, urban space resources are becoming more and more tense, and the safe and reasonable development and utilization of urban underground space has become an important issue to be solved urgently in large and medium-sized cities in my country. Blind exploitation of underground space is prone to problems such as pipeline breakage and landslides. In order to avoid these dangers, it is necessary to use non-destructive means to detect underground information first. As an important non-destructive geophysical exploration method, ground transient electromagnetic method has the advantages of convenient working mode and large detection depth in urban underground space detec...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08
CPCG01V3/083
Inventor 林君严复雪张洋陈健
Owner JILIN UNIV