CN105158807A - Deep buried pipeline accuracy detection device and detection method - Google Patents
Deep buried pipeline accuracy detection device and detection method Download PDFInfo
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- CN105158807A CN105158807A CN201510664440.1A CN201510664440A CN105158807A CN 105158807 A CN105158807 A CN 105158807A CN 201510664440 A CN201510664440 A CN 201510664440A CN 105158807 A CN105158807 A CN 105158807A
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Abstract
The invention discloses a deep buried pipeline accuracy detection device, comprising a high-power power supply unit, and a high-power signal emission device in connection with the high-power power supply unit, and characterized in that a deep buried pipeline is a nonmetal deep buried pipeline or a metal pipeline; the nonmetal deep buried pipeline is internally provided with a metal lead threading device; the high-power signal emission device is in connection with the metal lead threading device or the metal pipeline through a current loop shield lead; the high-power signal emission device emits high-power current signals, the signals pass through the metal lead threading device to generate an electromagnetic field, and a signal detection receiver performs depth detection above the deep buried pipeline. The deep buried pipeline accuracy detection device employs the high-power signal emission device to emit high-power current signals, employs the shield lead to improve loop current conductive performances, and meanwhile inhibits the electromagnetic interference generated by loop current signals; the high-power current signals pass through the metal lead threading device to generate an electromagnetic field, and the signal detection receiver performs depth detection above the deep buried pipeline. The deep buried pipeline accuracy detection device and detection method can effectively improve deep and large pipeline detection depth and precision.
Description
Technical field
The present invention relates to engineering mapping field tests, specifically a kind of accurately detecting device and detection method thereof that can carry out deep-buried pipeline.
Technical background
Along with trenchless technology application fast development has also occurred some problems simultaneously, due to many-sided reason, the construction information of all kinds of special pipelines in the existing underground of China is incomplete, and pipe installation does not have unified planning, causes various pipeline confused and disordered in the space distribution of underground.Existing completion filing data accuracy not high or with the situation that present situation is not inconsistent, bring a lot of obstruction for urban underground space utilizes again.
Existing no-dig technique pipeline detection method mainly adopts method of loci, main employing guide instrument and gyroscope carry out pipeline detection, these methods can only solve pipeline import and export, and pipeline aperture will meet certain requirements, the no-dig technique of other types cannot detect, the combustion gas such as run, water-supply line, or the information in full hole and power pipeline, guide instrument and gyro sensor cannot put into pipeline, the work of the type no-dig technique pipeline detection cannot be implemented, conventional shallow embedding detecting metal pipeline mainly adopts inductive electromagnetic method, within investigation depth is only limitted to 2m, and detection buried depth and plane buried depth detection accuracy are subject to surrounding disturbing effect larger.
In construction project implementation process, some dark large pipeline can not accurately be located under prior art conditions, blindly construction easily causes engineering accident, digging in-situ is mainly adopted to verify and the means such as magnetic gradient of holing in important node, if means such as excavation checking etc. accurately cannot be located more greatly and can not be adopted to pipeline buried depth, then adopt and can only carry out relocation of services, construction cost increases huge, and it is serious to delay the duration, therefore needs the gordian technique technique study carrying out dark large pipeline accurately detecting.
Summary of the invention
The object of the present invention is to provide a kind of accurately detecting device of deep-buried pipeline, adopt this device effectively can improve the degree of depth and the precision of dark large pipeline detection, sniffer and the method for the investigation depth precision of shallow embedding pipeline can be improved simultaneously.
To achieve these goals, technical scheme of the present invention is: a kind of accurately detecting device of deep-buried pipeline, comprise high-power power-supply unit, the high-power signal emitter be connected with described high-power power-supply unit, it is characterized in that at described deep-buried pipeline be nonmetal deep-buried pipeline or metal pipe line, plain conductor threading apparatus is laid in nonmetal deep-buried pipeline, described high-power signal emitter is connected by current return shielding line with plain conductor threading apparatus or metal pipe line, high-power emitter is used to launch high-power current signal, signal generates an electromagnetic field through plain conductor threading apparatus, above deep-buried pipeline, use acquisition of signal receiving instrument to carry out depth finding.
Another object of the present invention is to a kind of accurately detecting method that deep-buried pipeline is provided, adopt this device effectively can improve the degree of depth and the precision of dark large pipeline detection.
To achieve these goals, technical scheme of the present invention is: a kind of accurately detecting method of deep-buried pipeline, it is characterized in that described deep-buried pipeline is nonmetal deep-buried pipeline or metal pipe line, high-power power-supply unit is connected with high-power signal emitter, plain conductor threading apparatus is laid in nonmetal deep-buried pipeline, current return shielding line is used to be connected with plain conductor threading apparatus or metal pipe line high-power signal emitter, high-power emitter is used to launch high-power current signal, signal generates an electromagnetic field through plain conductor threading apparatus, above deep-buried pipeline, carry out planimetric position at use acquisition of signal receiving instrument determine, and carry out depth finding.
In nonmetal dark large pipeline, thinner metal threading apparatus is laid, as active source signal transduction body in the present invention; Increase emissive power, improve signal to noise ratio (S/N ratio); Loop uses shielded cable to connect, and inhibits loop undesired signal, improves signal to noise ratio (S/N ratio).The invention has the advantages that the degree of depth and precision that effectively can improve dark large pipeline detection.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of invention one embodiment.
In figure:
The high-power power-supply unit of 1-,
2-high-power signal emitter,
3-plain conductor threading apparatus,
4-underground Rock And Soil,
5-acquisition of signal receiving instrument,
6-current return shielding line,
7-electromagnetic field.
Embodiment
Sniffer of the present invention mainly comprises: high-power power-supply unit, high-power signal emitter, plain conductor threading apparatus, acquisition of signal receiving instrument, current return shielding line.
High-power power-supply unit 1 is connected with high-power signal emitter 2 by the present invention, plain conductor threading apparatus 3 is laid in nonmetal deep-buried pipeline, current return shielding line 6 is used to be connected with plain conductor threading apparatus 3 or metal pipe line high-power signal emitter 2, the present invention carries out using high-power emitter 2 to launch high-power current signal in dark large pipeline detection, signal is through plain conductor threading apparatus 3 or metal pipe line, around plain conductor threading apparatus or metal pipe line, 7 are generated an electromagnetic field by electromagnetic field principle, at use acquisition of signal receiving instrument 5 receiving electromagnetic signals above deep-buried pipeline, according to electromagnetic field principle, use Peak Intensity Method to carry out planimetric position to determine, (degree of depth that direct-reading method and instrument and equipment show is as investigation depth to use 70% method or direct-reading method to carry out depth finding, namely 70% method reads wave amplitude at peak, finds the position of peak value * 0.7 value, and using 2 times of the distance between 2 o'clock as investigation depth value, direct-reading method and 70% method are all existing mature technologies).
The present invention lays metal threading apparatus as current signal carrier (also can directly using metal deep-buried pipeline as signal vehicle) in nonmetal pipe line, transmitting by increasing, suppressing loop undesired signal to improve signal to noise ratio (S/N ratio), thus improve the dark large line depth of detection and precision.
The said deep-buried pipeline of the present invention is that buried depth is greater than 3.0m, and metal pipe line caliber is greater than 50mm, is less than 2000mm.Nonmetal caliber internal diameter is greater than 25mm, and plain conductor threading apparatus 3 diameter should be less than or equal to 8mm.
The said signal shielding line of the present invention is coaxial cable shield line, and diameter is less than 10mm.
According to a preferred embodiment of the invention, high-power signal emitter emissive power electric current should be greater than 1 ampere.
The present invention generally can be greater than 1A through site test emissive power electric current, and because the undesired signal situation of each engineering ground is different, signal to noise ratio (S/N ratio) improves situation can difference to some extent, and for the engineering-environment that interference is stronger, effect is more remarkable.
Claims (6)
1. the accurately detecting device of a deep-buried pipeline, comprise high-power power-supply unit, the high-power signal emitter be connected with described high-power power-supply unit, it is characterized in that at described deep-buried pipeline be nonmetal deep-buried pipeline or metal pipe line, plain conductor threading apparatus is laid in nonmetal deep-buried pipeline, described high-power signal emitter is connected by current return shielding line with plain conductor threading apparatus or metal pipe line, high-power emitter is used to launch high-power current signal, signal generates an electromagnetic field through plain conductor threading apparatus, above deep-buried pipeline, use acquisition of signal receiving instrument to carry out depth finding.
2. the accurately detecting device of deep-buried pipeline as claimed in claim 1, is characterized in that signal transmission power electric current should be greater than 1 ampere.
3. the accurately detecting device of deep-buried pipeline as claimed in claim 1, is characterized in that plain conductor threading apparatus diameter should be less than or equal to 8mm.
4. the accurately detecting method of a deep-buried pipeline, it is characterized in that described deep-buried pipeline is nonmetal deep-buried pipeline or metal pipe line, high-power power-supply unit is connected with high-power signal emitter, plain conductor threading apparatus is laid in nonmetal deep-buried pipeline, current return shielding line is used to be connected with plain conductor threading apparatus or metal pipe line high-power signal emitter, high-power emitter is used to launch high-power current signal, signal generates an electromagnetic field through plain conductor threading apparatus, above deep-buried pipeline, carry out planimetric position at use acquisition of signal receiving instrument determine, and carry out depth finding.
5. the accurately detecting method of deep-buried pipeline as claimed in claim 4, is characterized in that signal transmission power electric current should be greater than 1 ampere.
6. the accurately detecting method of deep-buried pipeline as claimed in claim 4, is characterized in that plain conductor threading apparatus diameter should be less than or equal to 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510664440.1A CN105158807A (en) | 2015-10-15 | 2015-10-15 | Deep buried pipeline accuracy detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510664440.1A CN105158807A (en) | 2015-10-15 | 2015-10-15 | Deep buried pipeline accuracy detection device and detection method |
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| CN105158807A true CN105158807A (en) | 2015-12-16 |
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| CN201510664440.1A Pending CN105158807A (en) | 2015-10-15 | 2015-10-15 | Deep buried pipeline accuracy detection device and detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700039A (en) * | 2016-01-20 | 2016-06-22 | 广州市城市规划勘测设计研究院 | Method for detecting underground pipe in urban road exploration construction |
| CN108572396A (en) * | 2018-04-27 | 2018-09-25 | 佛山市燃气集团股份有限公司 | A kind of underground gas pipeline detection method |
| CN109298453A (en) * | 2018-11-14 | 2019-02-01 | 广州瑾诚测绘有限公司 | A kind of method and device of the buried underground pipelines of depth finding non-digging deep |
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| CN103698821A (en) * | 2013-12-12 | 2014-04-02 | 福州市勘测院 | Method for detecting deep underground pipeline by using orientation instrument |
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| US20020027438A1 (en) * | 1999-08-04 | 2002-03-07 | Ellen Ott | Temperature compensation for ground piercing metal detector |
| CN201681164U (en) * | 2010-04-13 | 2010-12-22 | 同济大学 | Detector for metal pipeline in front of pipe roof |
| CN103698821A (en) * | 2013-12-12 | 2014-04-02 | 福州市勘测院 | Method for detecting deep underground pipeline by using orientation instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700039A (en) * | 2016-01-20 | 2016-06-22 | 广州市城市规划勘测设计研究院 | Method for detecting underground pipe in urban road exploration construction |
| CN108572396A (en) * | 2018-04-27 | 2018-09-25 | 佛山市燃气集团股份有限公司 | A kind of underground gas pipeline detection method |
| CN109298453A (en) * | 2018-11-14 | 2019-02-01 | 广州瑾诚测绘有限公司 | A kind of method and device of the buried underground pipelines of depth finding non-digging deep |
| CN109298453B (en) * | 2018-11-14 | 2024-03-19 | 广东瑾诚城市规划勘测设计有限公司 | Method and device for deeply detecting non-excavation deeply-buried underground pipeline |
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Application publication date: 20151216 |