CN111983562A - Underground non-metal pipeline detection and positioning method - Google Patents
Underground non-metal pipeline detection and positioning method Download PDFInfo
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- CN111983562A CN111983562A CN202010770284.8A CN202010770284A CN111983562A CN 111983562 A CN111983562 A CN 111983562A CN 202010770284 A CN202010770284 A CN 202010770284A CN 111983562 A CN111983562 A CN 111983562A
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- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 title abstract description 23
- 238000009933 burial Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001902 propagating effect Effects 0.000 claims description 2
- 230000000644 propagated effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
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- 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
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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Abstract
The invention discloses a detection and positioning method of an underground non-metal pipeline.A sound wave signal generating device is arranged on a near-end non-metal pipeline, a sound pick-up is arranged at the far end of the non-metal pipeline, the sound wave signal generating device sends out a first sound wave signal, and the sound pick-up receives the first sound wave signal transmitted in the non-metal pipeline and determines the horizontal position of the non-metal pipeline; according to the determined horizontal position of the non-metal pipeline, arranging a sound pick-up in the extending direction of the non-metal pipeline, and determining the horizontal straight-line distance between the sound pick-up and the sound wave signal generating device; the sound wave signal generating device sends out a second sound wave signal and a third sound wave signal, and the sound pickup receives the second sound wave signal transmitted in the nonmetal pipeline; and the sound pickup receives the third sound wave signal and obtains the buried depth of the non-metal pipeline through calculation. And marks and burial depth information are marked on the ground of the nonmetal pipeline detected by the sound pick-up. The method is simple and efficient, high in calculation accuracy and small in error, and can be applied to detection of various pipelines.
Description
Technical Field
The embodiment of the invention relates to the technical field of underground pipeline detection, in particular to a detection and positioning method for underground nonmetal pipelines.
Background
With the continuous advance of urban construction in China, more pipelines are buried underground to more effectively utilize underground space, and the pipelines can be divided into metal pipelines and non-metal pipelines according to materials and are used for water supply and drainage pipe network construction, gas pipeline construction and the like. In order to bury more pipelines underground and save the occupied space on the ground, firstly, the pipeline burying area needs to be detected, the burying area, the horizontal distribution positioning, the burying depth and the like of each pipeline are determined, and the burying work is more conveniently and effectively carried out.
In the prior art, the detection of metal and nonmetal pipelines has corresponding technical development, such as a ground penetrating radar detection method, a fixed beacon detection method, a mobile beacon detection method and the like, so that not only are the applied equipment more precise and complicated, but also the detection steps are complicated, and meanwhile, the method is more used for the detection of metal pipelines and can realize the detection effect with higher precision. For the detection of the non-metal pipeline, there are many problems, such as poor detection effect, complex operation and poor precision.
Therefore, how to provide a method for detecting and positioning an underground non-metal pipeline, which simplifies the detection process and improves the detection accuracy, is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
Therefore, the embodiment of the invention provides a method for detecting and positioning an underground nonmetal pipeline, so as to solve the related technical problems in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a detection and positioning method for underground non-metal pipelines comprises the following steps:
the method comprises the following steps: the method comprises the following steps that an acoustic signal generating device is installed on a near-end nonmetal pipeline, a sound pick-up is arranged at the far end of the nonmetal pipeline, the acoustic signal generating device sends a first acoustic signal, the first acoustic signal is transmitted along the nonmetal pipeline, the sound pick-up receives the first acoustic signal transmitted in the nonmetal pipeline, and meanwhile, the sound pick-up moves along the section direction of the nonmetal pipeline to determine the horizontal position of the nonmetal pipeline;
step two: according to the horizontal position of the nonmetal pipeline determined in the step one, the sound pick-up is arranged in the extending direction of the nonmetal pipeline, and the horizontal straight line distance between the sound pick-up and the sound wave signal generating device is d1；
Step three: the sound wave signal generating device sends a second sound wave signal and a third sound wave signal, the second sound wave signal propagates along the non-metal pipeline, and the sound pickup receives the second sound wave signal propagating in the non-metal pipeline; the third sound wave signal is transmitted by taking the ground as a medium, the sound pickup receives the third sound wave signal, and the transmission speed of the third sound wave signal in the ground is v1The time when the pickup receives the third sound wave signal is t1Determining the linear distance s between the sound pickup and the sound wave signal generating device1＝v1*t1；
Step four: according to the formula: s1 2＝d1 2+h1 2Wherein h is1Is the buried depth of the non-metal pipeline;
step five: and marking identification and burial depth information on the ground of the nonmetal pipeline detected by the sound pick-up.
Further, in the step one, the determining the horizontal position of the non-metal pipeline comprises the following steps:
determining a first point A1 of the non-metal pipeline section direction, and simultaneously determining a second point A2 of the non-metal pipeline section direction, wherein a connecting line between A1 and A2 spans the non-metal pipeline;
the pickups move from a1 to a2, and the horizontal position of the non-metallic pipeline is determined where the pickups receive the strongest signals.
Further, between the fourth step and the fifth step, the method also comprises a comparison and judgment step:
determining the pre-buried depth range H of the non-metallic pipeline1And comparing the measured non-metallic linesDepth of burial h1And a pre-buried depth range H1；
When h is generated1At H1If so, performing the step five; when h is generated1Over H1If the range is out, the step five is not carried out.
Further, the method also comprises the step six:
placing the sound pickup in the step one at the corner of the non-metal pipeline, arranging another sound pickup at a point behind the corner, and determining that the horizontal distance between the two sound pickups is d2The time difference of the two sound pickups receiving the second sound wave signal is t2The propagation velocity of the sound wave in the non-metal pipeline is v2Thereby determining the length s between the non-metallic lines between the two pickups2＝t2*v2；
By the formula: s2 2＝h0 2+d2 2Determining the height difference between two pickups, where h0Is the error height;
the vertical height of the nonmetal pipeline at the pickup position after turning is h2＝h1±h0；
Determining the pre-buried depth range H of the non-metallic pipeline2And comparing the measured burial depth h of the non-metal pipeline2And a pre-buried depth range H2；
When h is generated2At H2If so, performing the step five; when h is generated2Over H2If the range is out, the step five is not carried out.
Further, the sound wave signal generating device comprises an oscillator, a power divider and a signal amplifier, wherein the output end of the oscillator is connected with the power divider, and the output end of the power divider is connected with the signal amplifier.
The embodiment of the invention has the following advantages:
this application uses the sound wave principle, sets up the oscillator at the near-end of the nonmetal pipeline that awaits measuring, through simultaneously to the nonmetal pipeline that awaits measuring and soil propagation sound wave signal, confirm the horizontal position of the nonmetal pipeline that awaits measuring through the adapter to further utilize linear distance s between adapter and the sound wave signal generating device and adapter and sound wave signal generating device distance d, calculate the buried depth h that obtains nonmetal pipeline, consequently, the information is buried underground specifically of final definite nonmetal pipeline. The method is simple and efficient, high in calculation accuracy and small in error, and can be applied to detection of various pipelines.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a cross-sectional view of a non-metallic underground pipeline provided in example 1 of the present invention;
fig. 2 is a schematic structural diagram of an acoustic signal generating apparatus provided in embodiment 1 of the present invention installed in a non-metal pipeline;
FIG. 3 is a top view of a non-metallic pipeline in a corner provided in example 2 of the present invention;
FIG. 4 is a schematic diagram of an arrangement structure of a non-metallic pipeline for turning provided by embodiment 2 of the invention;
fig. 5 is a schematic view of another arrangement structure of a non-metallic pipeline for turning provided in embodiment 2 of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the related technical problems in the prior art, the embodiment of the application provides a detection and positioning method for an underground non-metal pipeline, aiming at providing a detection method which is simple and efficient to operate and high in accuracy, and specifically comprises the following steps:
example 1
In the prior art, a general non-metal pipeline is buried along the direction of a main road of a city, so that the burying direction and the general position of the pipeline can be basically determined according to information (such as the length, the trend, the pre-buried depth of a certain point and the like) provided by a city planning department, and the direction perpendicular to the main road is further determined. This application mainly used has the detection of the non-metallic pipeline of certain pressure liquid, specifically when using, sets up sound wave signal generating device on non-metallic pipeline, buries underground at non-metallic pipeline and sets up the adapter, utilizes the sound wave principle, and horizontal position and buried depth are confirmed through the propagation that detects the sound wave in non-metallic pipeline to the adapter. The specific operation mode is as follows:
the method comprises the following steps: as shown in fig. 1-2, the acoustic signal generating device is installed on the near-end non-metal pipeline, the non-metal pipeline to be detected can be found in the well, a sound pickup is arranged at the far end of the non-metal pipeline, the acoustic signal generating device sends out a first acoustic signal, the first acoustic signal is transmitted in the non-metal pipeline and liquid in the non-metal pipeline, and the first acoustic signal is transmitted along the non-metal pipeline, namely transmitted from the near end to the far end of the non-metal pipeline. The matched sound pick-up is placed in the area of the far-end nonmetal pipeline, the sound pick-up receives a first sound wave signal propagated in the nonmetal pipeline, so that the first sound wave signal can be propagated in the nonmetal pipeline, meanwhile, the first sound wave signal can be upwards propagated from the nonmetal pipeline to reach the ground and be received by the sound pick-up, and the area where the nonmetal pipeline is located is further determined. Meanwhile, the sound pick-up moves along the section direction of the non-metal pipeline, namely the sound pick-up moves along the direction vertical to the non-metal pipeline on the ground, and the position of the sound pick-up, which is closest to the non-metal pipeline, is determined according to the strength of signals received by the sound pick-up, so that the horizontal position of the non-metal pipeline on the ground is also determined. In this step, determining the horizontal position of the non-metallic pipeline comprises the steps of:
the first point A1 of the non-metal pipeline section direction is determined, the second point A2 of the non-metal pipeline section direction is determined at the same time, and a connecting line between A1 and A2 crosses the non-metal pipeline, so that when the sound pick-up is moved from one point to another point, the shortest distance between the non-metal pipeline and the sound pick-up can be better found.
The pickups move from a1 to a2, and the horizontal position of the non-metallic pipeline is determined where the pickups receive the strongest signals. However, when the microphone is moving and it is impossible to determine whether the connection line between a1 and a2 crosses over the non-metal line, the microphone can be moved gradually from any point of a1 or a2 toward the opposite direction until the microphone stops receiving the strongest signal. Through the steps, the horizontal position information of the nonmetal pipeline can be accurately determined.
In order to more accurately determine the position of the non-metal pipeline, in particular the burial depth position of the non-metal pipeline, the method further comprises the following steps:
step two: according to the horizontal position of the nonmetal pipeline determined in the step one, the sound pick-up is arranged in the extending direction of the nonmetal pipeline, namely the sound pick-up is arranged on the ground right above the nonmetal pipeline, and the horizontal straight line distance between the sound pick-up and the sound wave signal generating device is d1，d1By measuring in the field to obtain a specific value, the determination of this value is required to ensure that the underground non-metallic pipeline is also arranged in a straight line from the proximal end to the microphone section.
Step three: the sound wave signal generating device emits a second sound wave signal and a third sound wave signal, and the second sound wave signal propagates along the non-metal pipeline, namely the second sound wave signal follows the non-metal pipeline and liquid in the non-metal pipeline from the near end of the non-metal pipelineTo the far end, the sound pick-up receives a second sound wave signal propagated in the non-metal pipeline, and the second sound wave signal is sent out so as to ensure that the sound pick-up is arranged at a position right above the non-metal pipeline, and the second sound wave signal and the first sound wave signal can be the same signal. For the purpose of distinction, the frequencies of the second and third acoustic signals may be set differently, specifically selected as actually needed. The third sound wave signal is transmitted by taking the ground as a medium, the sound pickup receives the third sound wave signal, the third sound wave signal is transmitted by a straight line distance, and meanwhile, the transmission speed of the third sound wave signal in the ground is v1，v1The time for the sound pick-up to receive the third sound wave signal is t1Obtained by timing to determine the linear distance s between the sound pickup and the sound wave signal generating device1＝v1*t1；
Based on the above determination method, the connection line between the sound pick-up and the nonmetal pipeline to be determined is perpendicular to the nonmetal pipeline to be determined, so that the following formula can be established:
step four: according to the formula: s1 2＝d1 2+h1 2Wherein h is1The vertical distance from the sound pick-up to the non-metal pipeline can be directly calculated through the formula, wherein the distance is the buried depth h of the non-metal pipeline1。
Step five: and marking identification and burial depth information on the ground of the nonmetal pipeline detected by the sound pick-up.
The above process is a mode of directly detecting the non-metal pipeline to be detected, in order to check the accuracy of the measurement, the burial depth detected by the non-metal pipeline can be compared with the preset depth range of the pipeline laying unit, specifically, between the above step four and step five, the method further comprises a comparison and judgment step:
determining the pre-buried depth range H of the non-metallic pipeline1And comparing the measured burial depth h of the non-metal pipeline1And a pre-buried depth range H1；
When h is generated1At H1Within the range, the step five is carried out, namely the non-metal pipelineThe measurement is accurate; when h is generated1Over H1If the range is out, the step five is not carried out.
This application uses the sound wave principle, sets up the oscillator at the near-end of the nonmetal pipeline that awaits measuring, through simultaneously to the nonmetal pipeline that awaits measuring and soil propagation sound wave signal, confirm the horizontal position of the nonmetal pipeline that awaits measuring through the adapter to further utilize linear distance s between adapter and the sound wave signal generating device and adapter and sound wave signal generating device distance d, calculate the buried depth h that obtains nonmetal pipeline, consequently, the information is buried underground specifically of final definite nonmetal pipeline. The method is simple and efficient, high in calculation accuracy and small in error, and can be applied to detection of various pipelines.
Example 2
In the prior art, the laying of the pipeline may encounter a turn, for example, at a relatively large street corner, the non-metal pipeline makes a 90-degree turn, and in order to detect the buried information of the non-metal pipeline after the turn, the following steps are also required:
specifically, as shown in fig. 3 to 5, the basic steps are as in embodiment 1, and the method further includes a sixth step:
placing the sound pick-up in the first step (defined as sound pick-up A) at the corner of the non-metal pipeline, setting another sound pick-up (defined as sound pick-up B) to be placed at a point behind the corner, and determining that the horizontal distance between the two sound pick-ups is d2The time difference of the two sound pickups receiving the second sound wave signal is t2The propagation velocity of the sound wave in the non-metal pipeline is v2Thereby determining the length s between the non-metallic lines between the two pickups2＝t2*v2；
By the formula: s2 2＝h0 2+d2 2Determining the height difference between two pickups, where h0Is the error height;
the vertical height of the nonmetal pipeline at the pickup position after turning is h2＝h1±h0；
Determining the pre-buried depth range H of the non-metallic pipeline2And comparing the measured burial depth of the non-metal pipelineh2And a pre-buried depth range H2；
When h is generated2At H2If so, performing the step five; when h is generated2Over H2If the range is out, the step five is not carried out.
Further, the sound wave signal generating device comprises an oscillator, a power divider and a signal amplifier, wherein the output end of the oscillator is connected with the power divider, and the output end of the power divider is connected with the signal amplifier.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. The underground nonmetal pipeline detecting and positioning method is characterized by comprising the following steps of:
the method comprises the following steps: the method comprises the following steps that an acoustic signal generating device is installed on a near-end nonmetal pipeline, a sound pick-up is arranged at the far end of the nonmetal pipeline, the acoustic signal generating device sends a first acoustic signal, the first acoustic signal is transmitted along the nonmetal pipeline, the sound pick-up receives the first acoustic signal transmitted in the nonmetal pipeline, and meanwhile, the sound pick-up moves along the section direction of the nonmetal pipeline to determine the horizontal position of the nonmetal pipeline;
step two: according to the horizontal position of the nonmetal pipeline determined in the step one, the sound pick-up is arranged in the extending direction of the nonmetal pipeline, and the horizontal straight line distance between the sound pick-up and the sound wave signal generating device is d1；
Step three: the sound wave signal generating device sends a second sound wave signal and a third sound wave signal, the second sound wave signal propagates along the non-metal pipeline, and the sound pickup receives the second sound wave signal propagating in the non-metal pipeline; the third sound wave signal is transmitted by taking the ground as a medium, the sound pickup receives the third sound wave signal, and the transmission speed of the third sound wave signal in the ground is v1To pick upThe time when the sound device receives the third sound wave signal is t1Determining the linear distance s between the sound pickup and the sound wave signal generating device1＝v1*t1；
Step four: according to the formula: s1 2＝d1 2+h1 2Wherein h is1Is the buried depth of the non-metal pipeline;
step five: and marking identification and burial depth information on the ground of the nonmetal pipeline detected by the sound pick-up.
2. The underground nonmetal pipeline detecting and positioning method according to claim 1, wherein in the first step, the determining the horizontal position of the nonmetal pipeline comprises the following steps:
determining a first point A1 of the non-metal pipeline section direction, and simultaneously determining a second point A2 of the non-metal pipeline section direction, wherein a connecting line between A1 and A2 spans the non-metal pipeline;
the pickups move from a1 to a2, and the horizontal position of the non-metallic pipeline is determined where the pickups receive the strongest signals.
3. The underground nonmetal pipeline detecting and positioning method according to claim 2, further comprising, between the fourth step and the fifth step, a comparison and judgment step of:
determining the pre-buried depth range H of the non-metallic pipeline1And comparing the measured burial depth h of the non-metal pipeline1And a pre-buried depth range H1；
When h is generated1At H1If so, performing the step five; when h is generated1Over H1If the range is out, the step five is not carried out.
4. The underground nonmetal pipeline detecting and positioning method according to claim 3, further comprising the steps of six:
placing the sound pickup in the step one at the corner of the non-metal pipeline, arranging another sound pickup at a point behind the corner, and determining that the horizontal distance between the two sound pickups is d2The time difference of the two sound pickups receiving the second sound wave signal is t2The propagation velocity of the sound wave in the non-metal pipeline is v2Thereby determining the length s between the non-metallic lines between the two pickups2＝t2*v2；
By the formula: s2 2＝h0 2+d2 2Determining the height difference between two pickups, where h0Is the error height;
the vertical height of the nonmetal pipeline at the pickup position after turning is h2＝h1±h0；
Determining the pre-buried depth range H of the non-metallic pipeline2And comparing the measured burial depth h of the non-metal pipeline2And a pre-buried depth range H2；
When h is generated2At H2If so, performing the step five; when h is generated2Over H2If the range is out, the step five is not carried out.
5. The underground nonmetal pipeline detecting and positioning method according to claim 1, wherein the sound wave signal generating device comprises an oscillator, a power divider and a signal amplifier, wherein the output end of the oscillator is connected with the power divider, and the output end of the power divider is connected with the signal amplifier.
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