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Deeply-buried power pipeline detection method and device

A power pipeline and detection method technology, which is applied in the field of deep buried power pipeline detection methods and devices, can solve the problems of difficult to detect cable electromagnetic signals, difficult to distinguish deep buried power cable signals, and large human noise on the ground surface, so as to improve detection efficiency , flexible layout, increase the effect of signal-to-noise ratio

Pending Publication Date: 2021-12-03
上海山南勘测设计有限公司
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Problems solved by technology

However, due to the relatively deep buried depth, generally 8-10m power or communication cables, the human noise on the surface is also relatively large, so it is difficult to detect the electromagnetic signal of the cable on the surface
On the other hand, the power signal is generally a 50HZ signal, and the various power distributions on the surface lead to a very strong electromagnetic interference signal with a frequency of 50HZ when detecting on the ground. It is difficult to distinguish the signal of the deeply buried power cable by the commonly used detection technology now.
At present, there is no detection technology in the industry that can detect large buried depth power cables under the condition of full hole load, that is, when all pipes are pierced with power cables

Method used

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Embodiment

[0033] A deep-buried power pipeline detection method, used to detect the position of the deep-buried power cable 4, because the buried depth of the deep-buried power cable 4 is relatively large, generally the buried depth is 8-10m for power or communication cables, and the human noise on the ground surface is also relatively large Large, so it is difficult to detect the electromagnetic signal of the cable on the surface. On the other hand, the power signal is generally a 50HZ signal, and various electric power distributions on the surface lead to a very strong electromagnetic interference signal with a frequency of 50HZ during ground detection.

[0034] The present invention can overcome above-mentioned difficulty, specifically comprises the following steps:

[0035] The position range of the deeply buried power cable 4 is obtained, and the detection borehole is vertically drilled within the position range. In this embodiment, the horizontal distance between the detection bor...

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Abstract

The invention relates to a deeply-buried power pipeline detection method and device, and the method is used for detecting the position of a deeply-buried power cable, and comprises the following steps that the position range of the deeply-buried power cable is obtained, and a detection drill hole is drilled in the position range; a receiving sensor is arranged in the detection drill hole, and the receiving sensor obtains an electromagnetic field signal of the deeply-buried power cable; the position of the deeply-buried power cable is obtained according to the electromagnetic field signal. The device is based on the method. Compared with the prior art, the device has the advantages of capability of quantitatively detecting the position of the deeply-buried pipeline, flexible detection form, high accuracy, high efficiency and the like.

Description

technical field [0001] The invention relates to the field of power pipeline detection, in particular to a deep buried power pipeline detection method and device. Background technique [0002] At present, the detection technologies commonly used in the detection of urban underground pipelines are generally electromagnetic induction method, guidance instrument method, gyroscope, magnetic gradient and other technologies. Among them, electromagnetic induction technology mainly detects relatively shallow buried pipelines (less than 3m) The gyroscope is mainly used for laying metal pipelines with a relatively large buried depth (generally greater than 5m) in the way of dragging tubes. For information pipelines and power cable pipelines with relatively deep buried depths laid in the way of dragging tubes, gyroscopes are generally used. Instrument detection technology. However, for power and communication pipelines with a large buried depth, no matter which method is used, such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/08
CPCG01V3/083
Inventor 马文亮徐敏生
Owner 上海山南勘测设计有限公司
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