CN116908830A - Well detection method for buried pipeline valve - Google Patents

Well detection method for buried pipeline valve Download PDF

Info

Publication number
CN116908830A
CN116908830A CN202310872800.1A CN202310872800A CN116908830A CN 116908830 A CN116908830 A CN 116908830A CN 202310872800 A CN202310872800 A CN 202310872800A CN 116908830 A CN116908830 A CN 116908830A
Authority
CN
China
Prior art keywords
pipeline
determining
detection
ground penetrating
penetrating radar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310872800.1A
Other languages
Chinese (zh)
Inventor
铁柱
薛伟
史贵兵
朱晓刚
段桂英
孙长亮
罗向东
韩龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuclear Industry Group 208
Original Assignee
Nuclear Industry Group 208
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nuclear Industry Group 208 filed Critical Nuclear Industry Group 208
Priority to CN202310872800.1A priority Critical patent/CN116908830A/en
Publication of CN116908830A publication Critical patent/CN116908830A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • G01S7/411—Identification of targets based on measurements of radar reflectivity

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The invention discloses a buried pipeline valve well detection method, which comprises the following steps: determining a presumed location of a buried valve well to be probed and determining a type of pipe connected to the valve well; selecting a detection mode according to the pipeline type, detecting the position and the trend of the pipeline at the estimated position, and determining the crossing position of the pipeline; and detecting and excavating verification by using a ground penetrating radar according to the crossing position, and determining the accurate position of the valve well. By utilizing the scheme of the invention, accurate data information can be provided for gas enterprises, the management of pipelines is convenient, and powerful guarantee is provided for the datamation and informatization of cities.

Description

Well detection method for buried pipeline valve
Technical Field
The invention relates to the field of detection of gas pipelines, in particular to a buried pipeline valve well detection method.
Background
The air valve of the outdoor gas pipeline must be installed in the valve well, and in order to ensure continuous and good operation of the gas pipe network, the valve well must be maintained and cleaned regularly or irregularly. The valve well, the sewer cover and the like are flush with the road (ground) surface by being matched with projects such as construction of various municipal roads and garden (social) areas, but part of the valve well is invisible on the ground surface due to missing completion data, construction communication, improper supervision, unauthorized construction and the like. Because of the importance of the valve well, in order to avoid gas leakage accidents, in the current digital, informationized and intelligent rapid development process, gas enterprises increasingly pay more attention to the accurate positioning of the valve well in the daily maintenance management of a pipe network in order to prevent third party damage, improve the intrinsic safety level, improve the economic benefit and the management efficiency. The construction of urban gas pipe network in China has been last hundred years, most urban gas enterprises are affected by the current construction conditions, technology and equipment, and the problem of completion data missing exists in different degrees. Thus, there is a need for accurate positioning of the valve well by means of detection.
The current pipeline well detection method comprises the following steps: electromagnetic method, seismic scattering method, electronic tag detection method, drill detection and direct (micropore) excavation, ground penetrating radar method, etc. The methods have problems such as low pertinence and poor detection result accuracy, and the pipeline environment and the pipeline size are required to meet certain requirements, such as embedding electronic tags, not being too small in diameter and the like.
For this reason, how to accurately and efficiently determine the position of the piping well valve is an important problem to be solved at present.
Disclosure of Invention
The invention provides a well detection method for a buried pipeline valve, which is used for accurately and efficiently determining the position of the pipeline well valve.
Therefore, the invention provides the following technical scheme:
a method of well detection for a buried pipeline valve, the method comprising:
determining a presumed location of a buried valve well to be probed and determining a type of pipe connected to the valve well;
selecting a detection mode according to the pipeline type, detecting the position and the trend of the pipeline at the estimated position, and determining the crossing position of the pipeline;
and detecting and excavating verification by using a ground penetrating radar according to the crossing position, and determining the accurate position of the valve well.
Optionally, the determining the presumed location of the buried valve well to be probed comprises: and determining the estimated position of the buried valve well to be detected according to the trend and the crossing position of the gas pipeline.
Optionally, the selecting a detection mode according to the pipeline type, detecting the position and the trend of the pipeline at the estimated position, and determining the intersection position of the pipeline includes:
if the pipeline type is PE pipeline, detecting and determining the position and trend of the pipeline at the presumed position by using an active sound source detection method, and determining the crossing position of the pipeline;
if the pipeline type is a metal pipeline, detecting the position and the trend of the pipeline at the estimated position by utilizing a pipeline positioner, and determining the crossing position of the pipeline.
Optionally, the determining the pipe position and the direction at the estimated position by using the active sound source detection method includes:
moving a ground penetrating radar onto a to-be-detected profile at the presumed location;
and controlling the ground penetrating radar antenna to start detection when the ground penetrating radar antenna is close to a detected surface, moving the antenna at a constant speed in the detection process, and observing the change condition of the display waveform of the ground penetrating radar in real time until the display waveform is an inverted V-shaped arc wave, and determining the current detection position as the crossing position of the pipeline.
Optionally, the controlling the ground penetrating radar antenna to start detecting near the detected surface includes:
setting detection parameters, wherein the detection parameters comprise: the detection signal transmitting frequency, the detection signal intensity and the receiving-transmitting distance;
and controlling the ground penetrating radar antenna to approach the detected surface to start detection according to the set detection parameters.
Optionally, setting the detection signal strength includes: and determining the intensity of the ground penetrating radar emission signal according to the soil at the presumed position and the landfill depth of the PE pipeline.
Optionally, the ground penetrating radar includes: an audio vibrator and an audio transceiver; the audio vibrator is used for generating an audio signal; the audio transceiver is used for sending and receiving the audio signal;
the method for detecting and determining the position and the trend of the pipeline by using the active sound source detection method further comprises the following steps:
in the detection process, if the audio signal received by the audio transceiver is weak, the sensitivity of the audio transceiver is increased, so that the audio transceiver can better receive the sound source signal.
Optionally, the method further comprises: the strength of the audio signal received by the audio transceiver is monitored in real time.
Optionally, the pipe positioner includes: a transmitter and a receiver; detecting the position and the trend of the pipeline at the estimated position by utilizing a pipeline positioner, wherein determining the crossing position of the pipeline comprises the following steps:
the transmitter of the pipeline positioning instrument is arranged right above the metal pipeline at the estimated position to transmit, and the receiver is arranged near the detected surface to detect;
sequentially and slowly moving the receiver until the position of the gas pipeline is detected;
and determining the crossing position of the pipelines according to the detected positions of the gas pipelines.
Optionally, the determining the position and the trend of the pipeline by detecting the position of the pipeline by using the pipeline positioner further comprises: the transmitting frequency of the transmitter and the receiving frequency of the receiver are set to 33KHz.
According to the method for detecting the buried pipeline valve well, firstly, the estimated position of the buried valve well to be detected is determined, and the type of a pipeline connected with the valve well is determined according to the requirement that the valve well is required to be accurately positioned in a detection mode; then selecting a detection mode according to the pipeline type, and detecting and determining the area of the valve well at the estimated position; and then detecting and excavating verification in the region by using a ground penetrating radar method, and determining the accurate position of the valve well.
The scheme of the invention can provide accurate data information for gas enterprises, bring convenience to management of pipelines, and also provide powerful guarantee for the datamation and informatization of cities.
Drawings
FIG. 1 is a flow chart of a method for well detection of a buried pipeline valve provided by an embodiment of the present invention;
FIG. 2 is a flow chart of determining the crossing location of pipes using active acoustic source detection in an embodiment of the present invention;
FIG. 3 is a flow chart of determining the intersection location of pipes using pipe positioner detection in an embodiment of the invention.
Detailed Description
In order to make the solution of the embodiment of the present invention better understood by those skilled in the art, the embodiment of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The ground penetrating radar method is one kind of detecting method to determine the material distribution inside medium with high frequency radio electromagnetic wave, and is also named ground penetrating radar, geological radar, underground radar, pulse radar, etc. and is one detecting method to detect the position below the ground surface or to determine the inside or structure of invisible object with wideband electromagnetic wave in pulse form. The ground penetrating radar instrument is convenient to carry, has the advantages of high resolution, high efficiency, nondestructive detection and visual result, has high environmental adaptability, and is widely applied to detection of conductive and nonconductive underground public facilities, underground buildings (karst, tunnels, civil air defense, basements, various wells and the like), building flaw detection (holes, cracks, honeycombs and the like), pavement defects, underground soil classification layering and the like. The limitations of the ground penetrating radar method are: the method adopts high-frequency electromagnetic waves to detect, and attenuates when the high-frequency electromagnetic waves propagate in a medium, so that the penetrating capacity and resolution of radar waves are limited; when the medium contains water, the response of the ground penetrating radar is greatly influenced; the detection result shows the comprehensive contribution of dielectric constant, conductivity and magnetic permeability, so that the multiple solutions and the complexity of the detection result are unavoidable, and the identification and recognition of the target are difficult.
The buried valve well has the following characteristics: the inside of the device cannot contain more water (the device can be damaged), the buried depth is shallow, and the thickness of the upper covering is thin (generally not more than 0.5 m). Because of these characteristics of buried valve wells, the ground penetrating radar method is an effective method for detecting buried valve wells with great pertinence.
The method comprises the following steps of performing cross section scanning on a valve well of a target to be detected on site by using a ground penetrating radar, and determining the existence, the burial depth and the position of the target to be detected by identifying and explaining electromagnetic wave images, wherein the key point is that the following problems need to be solved: on one hand, whether the response of the ground penetrating radar to the valve well can be accurately identified, namely, when the ground penetrating radar is used for detection, radar waves play a role in determining the reflection form and definition of the valve well on a curve; on the other hand, the diameter of the buried valve well is small (typically not more than 1.0 meter), so it is important to determine the exact approximate location of the buried valve well first.
The invention provides a buried pipeline valve well detection method, which comprises the steps of firstly determining the estimated position of a buried valve well to be detected and determining the type of a pipeline connected with the valve well; then selecting a detection mode according to the pipeline type, and detecting and determining the area of the valve well at the estimated position; and then detecting and excavating verification in the region by using a ground penetrating radar method, and determining the accurate position of the valve well.
As shown in fig. 1, the method for detecting a well of a buried pipeline valve according to an embodiment of the present invention includes the following steps:
step 101, determining a presumed location of a buried valve well to be probed and determining a type of pipe connected to the valve well.
Typically, these line data do not have detailed coordinates of the buried gas pipe valve well, but from these line data the approximate orientation and possible intersection locations of the gas pipe can be determined, and from this information the possible locations of the buried valve well to be detected, i.e. the presumed locations, can be determined.
And 102, selecting a detection mode according to the pipeline type, detecting the position and the trend of the pipeline at the estimated position, and determining the crossing position of the pipeline.
The buried pipe network is mainly made of cast iron pipes, steel pipes, PE pipes and the like. Through decades of operational development, cast iron pipes have been basically modified and taken out of use. At present, the buried gas pipe mainly comprises a PE pipe and a steel pipe.
In the embodiment of the invention, a proper detection mode is selected for different types of pipelines, and the position and the trend of the pipeline are detected and determined at the estimated position.
For example, if the pipeline type is a PE pipeline, the position and the trend of the pipeline are detected and determined at the presumed position by using an active sound source detection method, that is, the exact position of the PE pipeline, and the intersection position of the PE pipeline is determined by a certain angle at the joint of the PE pipeline and the valve well, that is, the possible position of the valve well.
For another example, if the pipeline type is a metal pipeline, the pipeline position and the trend are detected by using a pipeline positioner at the estimated position, and then the crossing position of the metal pipeline is determined, namely the possible position of the valve well.
Specific detection procedures for different types of gas conduits will be described in detail later.
And 103, detecting and excavating verification by using a ground penetrating radar method according to the position and the trend of the pipeline, and determining the accurate position of the valve well.
After the crossing position of the pipeline is determined, further detection and excavation verification are carried out by using a ground penetrating radar method so as to determine the accurate position of the valve well.
It should be noted that the actual position of the valve well may deviate slightly from the intersection position of the pipes determined in step 102, and for this purpose, the tangential plane measurement may be repeatedly performed by using the ground penetrating radar within a radius range of 5 meters at the intersection position, so as to determine the accurate position and the approximate depth of the valve well.
If the pipeline type is PE pipeline, the position and the trend of the pipeline can be determined by utilizing an active sound source detection method. The working principle of the active sound source detection method is that an acoustic wave signal with specific frequency is transmitted into a pipeline through an audio device transmitting device, the signal directionally propagates to the far end along the pipeline, and the acoustic wave signal is directionally propagated in the pressure gas of the pipeline and simultaneously is also stereoscopically propagated to the ground through the soil of the pipeline wall; meanwhile, the sound wave signal is captured on the ground through the receiver, and the vertical disturbance range of the pipeline is found through the volume area of the continuous received signal, so that accurate positioning is achieved.
In a non-limiting embodiment, the position and the trend of the PE pipeline can be determined by using a ground penetrating radar, and of course, other active sound source detection methods can also be used, which is not limited to the embodiment of the invention.
The ground penetrating radar may include: an audio vibrator and an audio transceiver; the audio vibrator is used for generating an audio signal; the audio transceiver is used for sending and receiving the audio signal.
Taking ground penetrating radar as an example, as shown in fig. 2, a flowchart for determining the position and the trend of a pipeline by using an active sound source detection method in the embodiment of the invention includes the following steps:
step 201, moving the ground penetrating radar to the section to be detected at the estimated position.
Step 202, setting detection parameters, wherein the detection parameters comprise: probe signal transmission frequency, probe signal strength, and transmit-receive distance.
The intensity of the ground penetrating radar emission signal may be determined according to the soil at the presumed location and the landfill depth of the PE pipe.
In addition, the signal transmission frequency, the signal intensity and the receiving-transmitting distance can be directly set according to the historical detection data.
And 203, controlling the ground penetrating radar antenna to start detection close to a detected surface according to the set detection parameters, moving the antenna at a constant speed in the detection process, observing the change condition of the display waveform of the ground penetrating radar in real time until the display waveform is an inverted V-shaped arc wave, and determining the current detection position as the crossing position of the pipeline.
The displayed waveform is the waveform of the acoustic signal captured on the ground by the receiver as mentioned above.
The ground penetrating radar is usually provided with or can be externally connected with a high-resolution touch screen, a user can highlight interesting features on the high-resolution touch screen through touch operation, for example, an arrow can be drawn on the screen, soil calibration can be finished by dragging a soil calibration hyperbola to a position above a real hyperbola from the ground and then matching shapes, after calibration is finished, the real soil hyperbola is obtained during measurement, the geologic body is automatically identified as soil, and the calibration methods of other geologic bodies are the same.
The display screen displays a plot of the signal amplitude versus depth (time) and sensor position as it scans along a straight line, i.e., a "line scan". Since the radar radiation area is in a 3D cone shape instead of a thin beam, the acoustic signal corresponding to a small point target (such as a valve well, a pipeline, a rock, etc.) is a hyperbola, that is, the radar wave hits the object before or after passing through the object, and a hyperbola reflected waveform (that is, an inverted V-shaped wave) is formed. When the valve well is actually arranged below the detected surface, inverted V-shaped arc waves appear from the ground surface and continuously extend from the upper part to the lower part, and according to the characteristic, when the displayed wave forms the inverted V-shaped arc waves, the current detection position is determined to be the crossing position of the PE pipeline, namely the position area of the valve well.
It should be noted that, in the detection process, the small-range cross section measurement can be repeated multiple times, so as to further accurately determine the intersection point of the PE pipeline.
In addition, it should be noted that, during the detection process, the intensity of the audio signal received by the audio transceiver may be monitored in real time, and the position of the pipeline may be detected according to the magnitude of the signal intensity (the sound source signal emitted by the transmitter propagates along the pipeline, and the signal intensity is the largest when the audio transceiver receives the audio signal of the pipeline). If the audio signal received by the audio transceiver is weak, the sensitivity of the audio transceiver can be increased, so that the audio transceiver can better receive the sound source signal.
Accordingly, in the step 103, detection and excavation verification may be continued by using the ground penetrating radar according to the crossing position of the pipeline determined in the step 202 until the accurate position of the valve well is finally determined.
It should be noted that, if the accurate position of the valve well is to be located, the trolley carrying the ground penetrating radar is only pulled back along the same route until the position indication line on the display screen is accurately located above the inverted V-shaped arc wave. Dragging the depth indicator up or down to the target location may display the depth value of the target.
If the pipeline type is a metal pipeline, the pipeline position and the trend are detected by a pipeline positioner at the estimated position, and the crossing position of the pipelines is determined.
The pipeline positioning instrument comprises a transmitter and a receiver, and is used for detecting the position of the gas pipeline, and the intersection of the gas pipeline is the possible position of the valve well because a certain angle exists at the joint of the metal pipeline and the valve well. After the possible position is determined, the accurate position of the valve well can be determined by detecting the possible position by using a ground penetrating radar method.
As shown in fig. 3, a flowchart of detecting and determining a crossing position of a pipeline by using a pipeline positioner according to an embodiment of the present invention includes the following steps:
and 301, placing a transmitter of the pipeline positioner right above the metal pipeline at the estimated position for transmitting, and placing a receiver near the detected surface for detecting.
In a specific application, the transmitting frequency of the transmitter and the receiving frequency of the receiver may be set to 33KHz.
Step 302, the receiver is slowly moved in sequence until the position of the gas pipeline is detected.
The receiver can determine the position of the gas pipeline through double indication of an arrow and sound, and when the receiver is positioned at the left or right of the pipeline, the receiver is also provided with an arrow prompt to move to the right or left; double arrows appear when located directly above the pipe; meanwhile, the closer the receiver is to the position right above the pipeline, the larger the prompt tone is, and the accurate position of the gas pipeline is determined. After the position is determined, the burial depth of the gas pipeline is given on the receiver.
And step 303, determining the crossing position of the pipelines according to the detected positions of the gas pipelines.
Accordingly, in step 103, detection and excavation verification may be performed using a ground penetrating radar according to the crossing position of the pipe determined in step 303 until the exact position of the valve well is finally determined. The method and process for detecting by using the ground penetrating radar are described in detail above and will not be described in detail here.
According to the method for detecting the buried pipeline valve well, firstly, the estimated position of the buried valve well to be detected is determined, and the type of a pipeline connected with the valve well is determined according to the requirement that the valve well is required to be accurately positioned in a detection mode; then selecting a detection mode according to the pipeline type, and detecting and determining the area of the valve well at the estimated position; and then detecting and excavating verification in the region by using a ground penetrating radar method, and determining the accurate position of the valve well.
The scheme of the invention can provide accurate data information for gas enterprises, bring convenience to management of pipelines, and also provide powerful guarantee for the datamation and informatization of cities.
It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and in the foregoing figures, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. Moreover, the system embodiments described above are illustrative only, and the modules and units illustrated as separate components may or may not be physically separate, i.e., may reside on one network element, or may be distributed across multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
While the embodiments of the present invention have been described in detail, the detailed description of the invention is provided herein, and the description of the embodiments is provided merely to facilitate the understanding of the method and system of the present invention, which is provided by way of example only, and not by way of limitation. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention, and the present description should not be construed as limiting the present invention. It is therefore contemplated that any modifications, equivalents, improvements or modifications falling within the spirit and principles of the invention will fall within the scope of the invention.

Claims (10)

1. A method of well detection for a buried pipeline valve, the method comprising:
determining a presumed location of a buried valve well to be probed and determining a type of pipe connected to the valve well;
selecting a detection mode according to the pipeline type, detecting the position and the trend of the pipeline at the estimated position, and determining the crossing position of the pipeline;
and detecting and excavating verification by using a ground penetrating radar according to the crossing position, and determining the accurate position of the valve well.
2. The method of claim 1, wherein determining the presumed location of the buried valve well to be probed comprises:
and determining the estimated position of the buried valve well to be detected according to the trend and the crossing position of the gas pipeline.
3. The method of claim 1, wherein selecting a detection mode according to the pipe type, detecting a pipe position and a direction at the estimated position, and determining a crossing position of the pipe comprises:
if the pipeline type is PE pipeline, detecting and determining the position and trend of the pipeline at the presumed position by using an active sound source detection method, and determining the crossing position of the pipeline;
if the pipeline type is a metal pipeline, detecting the position and the trend of the pipeline at the estimated position by utilizing a pipeline positioner, and determining the crossing position of the pipeline.
4. A method according to claim 3, wherein said determining the pipe position and orientation using active acoustic source detection at said inferred position detection comprises:
moving a ground penetrating radar onto a to-be-detected profile at the presumed location;
and controlling the ground penetrating radar antenna to start detection when the ground penetrating radar antenna is close to a detected surface, moving the antenna at a constant speed in the detection process, and observing the change condition of the display waveform of the ground penetrating radar in real time until the display waveform is an inverted V-shaped arc wave, and determining the current detection position as the crossing position of the pipeline.
5. The method of claim 4, wherein controlling the ground penetrating radar antenna to begin probing proximate the inspected surface comprises:
setting detection parameters, wherein the detection parameters comprise: the detection signal transmitting frequency, the detection signal intensity and the receiving-transmitting distance;
and controlling the ground penetrating radar antenna to approach the detected surface to start detection according to the set detection parameters.
6. The method of claim 5, wherein setting the probe signal strength comprises:
and determining the intensity of the ground penetrating radar emission signal according to the soil at the presumed position and the landfill depth of the PE pipeline.
7. The method of claim 5, wherein the ground penetrating radar comprises: an audio vibrator and an audio transceiver; the audio vibrator is used for generating an audio signal; the audio transceiver is used for sending and receiving the audio signal;
the method for detecting and determining the position and the trend of the pipeline by using the active sound source detection method further comprises the following steps:
during the probing process, if the audio signal received by the audio transceiver is weak, the sensitivity of the audio transceiver is increased.
8. The method of claim 7, wherein the method further comprises:
the strength of the audio signal received by the audio transceiver is monitored in real time.
9. A method according to claim 3, wherein the pipe locator comprises: a transmitter and a receiver; detecting the position and the trend of the pipeline at the estimated position by utilizing a pipeline positioner, wherein determining the crossing position of the pipeline comprises the following steps:
the transmitter of the pipeline positioning instrument is arranged right above the metal pipeline at the estimated position to transmit, and the receiver is arranged near the detected surface to detect;
sequentially and slowly moving the receiver until the position of the gas pipeline is detected;
and determining the crossing position of the pipelines according to the detected positions of the gas pipelines.
10. The method of claim 9, wherein determining the pipe position and orientation using pipe locator detection at the inferred position further comprises:
the transmitting frequency of the transmitter and the receiving frequency of the receiver are set to 33KHz.
CN202310872800.1A 2023-07-17 2023-07-17 Well detection method for buried pipeline valve Pending CN116908830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310872800.1A CN116908830A (en) 2023-07-17 2023-07-17 Well detection method for buried pipeline valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310872800.1A CN116908830A (en) 2023-07-17 2023-07-17 Well detection method for buried pipeline valve

Publications (1)

Publication Number Publication Date
CN116908830A true CN116908830A (en) 2023-10-20

Family

ID=88367673

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310872800.1A Pending CN116908830A (en) 2023-07-17 2023-07-17 Well detection method for buried pipeline valve

Country Status (1)

Country Link
CN (1) CN116908830A (en)

Similar Documents

Publication Publication Date Title
Costello et al. Underground asset location and condition assessment technologies
Hao et al. Condition assessment of the buried utility service infrastructure
US6667709B1 (en) Method and apparatus for detecting leaks in buried pipes by using a selected combination of geophysical instruments
US6003376A (en) Acoustic system for measuring the location and depth of underground pipe
KR101179001B1 (en) System for measuring position and management of buried structures
US10753907B2 (en) Non-metallic pipe locator
Ékes et al. GPR goes underground: Pipe penetrating radar
CN115291200A (en) Buried deep pipeline positioning method based on digital display
KR20000024666A (en) Detection apparatus for the survey of buried structures by used gpr system
CN116908830A (en) Well detection method for buried pipeline valve
CN211293285U (en) Supernormal large buried depth underground pipeline detecting device
Ékes et al. Completing condition assessments using in-pipe GPR as pipe penetrating radar
KR20000024667A (en) Detection techniques method for the survey of buried structures by used gpr system
Abd Gani et al. Undergrounds water pipe mapping using ground penetrating radar and global positioning system
CN112162311A (en) Rapid and safe detection method for sewage pipeline in deep and large inspection well
CN219842552U (en) Underground nonmetallic gas pipeline positioning device based on active sound source
CN110673200A (en) Intelligent pipeline positioning device and method based on coded signals
Junoh et al. Estimation Diameter of Buried Pipe Using Principle of Ground Penetrating Radar and Electromagnetic Locator
KR200188711Y1 (en) Antenna structure of detection apparatus for the survey of buried structures by used gpr system
KR200194861Y1 (en) Receive signal analysis device of detection apparatus for the survey of buried structures by used gpr system
Wang Application and evaluation of non-destructive testing methods for buried pipes
KR200194862Y1 (en) Uniformity detection apparatus for the survey of buried structures by used gpr system
CN115793072A (en) Device and method for detecting blockage and siltation of underground pipeline by using ground penetrating radar
Ékes Application of pipe penetrating radar for asbestos cement pipe condition assessment
KR200194863Y1 (en) Detection apparatus for the survey of buried structures having receive signal saved device by used gpr system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination