CN111983562B - Underground nonmetallic pipeline detection positioning method - Google Patents
Underground nonmetallic pipeline detection positioning method Download PDFInfo
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- CN111983562B CN111983562B CN202010770284.8A CN202010770284A CN111983562B CN 111983562 B CN111983562 B CN 111983562B CN 202010770284 A CN202010770284 A CN 202010770284A CN 111983562 B CN111983562 B CN 111983562B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 53
- 238000009933 burial Methods 0.000 claims abstract description 19
- 230000000644 propagated effect Effects 0.000 claims abstract description 11
- 230000005236 sound signal Effects 0.000 claims description 3
- 238000010276 construction Methods 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
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012625 in-situ measurement Methods 0.000 description 1
- 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
Classifications
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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
-
- 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
Abstract
The invention discloses a method for detecting and positioning an underground nonmetallic pipeline, which comprises the steps of installing an acoustic wave signal generating device on a nonmetallic pipeline at the near end, arranging a pickup at the far end of the nonmetallic pipeline, sending a first acoustic wave signal by the acoustic wave signal generating device, receiving the first acoustic wave signal propagated in the nonmetallic pipeline by the pickup, and determining the horizontal position of the nonmetallic pipeline; according to the determined horizontal position of the nonmetallic pipeline, arranging the pickup in the extending direction along the nonmetallic pipeline, and determining the horizontal linear distance between the pickup 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 pickup receives the second sound wave signal propagated in the nonmetallic pipeline; and the sound pick-up receives the third sound wave signal, and the burial depth of the nonmetal pipeline is obtained through calculation. Marking marks and burial depth information on the ground of the nonmetal pipeline detected by the sound pick-up. The method is simple and efficient, has high calculation accuracy and smaller 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 an underground nonmetallic pipeline detection positioning method.
Background
With the continuous promotion of urban construction in China, more pipelines are buried underground for more effective utilization of underground space, and the pipelines can be divided into metal pipelines and nonmetal pipelines according to materials and are used for construction of water supply and drainage pipe networks, gas pipeline construction and the like. In order to embed more pipelines underground, the occupied space on the ground is saved, firstly, the embedded areas of the pipelines are required to be detected, the embedded areas, horizontal distribution positioning, embedded depth and the like of each pipeline are determined, and the embedded work is more convenient and effective to develop.
In the prior art, corresponding technical developments are carried out on detection of metal and nonmetal pipelines, such as a ground penetrating radar detection method, a fixed beacon detection method, a mobile beacon detection method and the like, so that the applied equipment is precise and complex, the detection steps are complicated, and meanwhile, the method is widely used for detecting the metal pipelines, and a detection effect with higher precision can be realized. However, for the detection of nonmetallic pipelines, various problems exist, such as poor detection effect, complex operation and poor precision.
Therefore, how to provide a method for detecting and positioning an underground nonmetallic pipeline, which simplifies the detection flow and improves the detection precision, is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
Therefore, the embodiment of the invention provides a method for detecting and positioning an underground nonmetallic pipeline, which aims to solve the related technical problems in the prior art.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
an underground nonmetallic pipeline detection and positioning method comprises the following steps:
step one: the sound wave signal generating device is arranged on a non-metal pipeline at the near end, and a sound pickup is arranged at the far end of the non-metal pipeline, the sound wave signal generating device sends out a first sound wave signal, the first sound wave signal propagates along the non-metal pipeline, the sound pickup receives the first sound wave signal propagated in the non-metal pipeline, and meanwhile, the sound pickup moves along the cross section direction of the non-metal pipeline to determine the horizontal position of the non-metal pipeline;
step two: according to the horizontal position of the nonmetallic pipeline determined in the step one, the pickup is arranged along the extending direction of the nonmetallic pipeline, and the horizontal straight line distance between the pickup and the sound wave signal generating device is d 1 ；
Step three: the sound wave signal generating device sends out a second sound wave signal and a third sound wave signal, the second sound wave signal propagates along the nonmetal pipeline, and the sound pickup receives the second sound wave signal propagated in the nonmetal pipeline; the third sound wave signal propagates by taking the land as a medium and is picked upReceiving a third acoustic wave signal with a propagation velocity v in the ground 1 The time for the pickup to receive the third sound wave signal is t 1 Determining the straight line distance between the pickup and the sound wave signal generating device as s 1 ＝v 1 *t 1 ；
Step four: according to the formula: s is(s) 1 2 ＝d 1 2 +h 1 2 Wherein h is 1 Is the burial depth of the nonmetallic pipeline;
step five: marking marks and burial depth information on the ground of the nonmetal pipeline detected by the sound pick-up.
Further, in step one, determining the horizontal position of the nonmetallic pipeline includes the steps of:
determining a first point A1 of the section direction of the nonmetallic pipeline, and simultaneously determining a second point A2 of the section direction of the nonmetallic pipeline, wherein a connecting line between the A1 and the A2 spans the nonmetallic pipeline;
the pickup moves from A1 to A2, and the position where the pickup receives the signal most strongly is determined as the horizontal position of the nonmetallic pipeline.
Further, between the fourth step and the fifth step, a comparison judging step is further included:
determining the embedded depth range H of a nonmetallic pipeline 1 And comparing the measured burial depths h of the nonmetallic pipelines 1 And a pre-buried depth range H 1 ；
When h 1 At H 1 In the range, performing the fifth step; when h 1 Beyond H 1 And if the range is out, the fifth step is not performed.
Further, the method further comprises the step six of:
placing the pickup in the first step at the corner of the nonmetal pipeline, and placing another pickup at a point behind the corner, and determining the horizontal distance d between the two pickup 2 The time difference of the two sound pick-up devices for receiving the second sound signal is t 2 The propagation speed of sound wave in nonmetallic pipeline is v 2 Thereby determining the length s between nonmetallic pipelines between two sound pick-up devices 2 ＝t 2 *v 2 ；
By the formula: s is(s) 2 2 ＝h 0 2 +d 2 2 Determining a height difference between two pickups, wherein h 0 Is the error height;
the vertical height of the nonmetal pipeline at the pickup after turning is h 2 ＝h 1 ±h 0 ；
Determining the embedded depth range H of a nonmetallic pipeline 2 And comparing the measured burial depths h of the nonmetallic pipelines 2 And a pre-buried depth range H 2 ；
When h 2 At H 2 In the range, performing the fifth step; when h 2 Beyond H 2 And if the range is out, the fifth step is not performed.
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:
according to the method, the oscillator is arranged at the near end of the nonmetallic pipeline to be measured, the ultrasonic signals are transmitted to the nonmetallic pipeline to be measured and the land simultaneously, the horizontal position of the nonmetallic pipeline to be measured is determined through the pickup, the linear distance s between the pickup and the ultrasonic signal generating device and the distance d between the pickup and the ultrasonic signal generating device are further utilized, the burial depth h of the nonmetallic pipeline is calculated, and therefore the specific burial information of the nonmetallic pipeline is finally determined. The method is simple and efficient, has high calculation accuracy and smaller 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 will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
FIG. 1 is a cross-sectional view of an underground nonmetallic pipeline according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of the acoustic signal generating device according to embodiment 1 of the present invention mounted on a nonmetallic pipeline;
FIG. 3 is a top view of a corner nonmetallic pipeline provided in embodiment 2 of the present invention;
FIG. 4 is a schematic view of an arrangement structure of a bent nonmetallic pipeline according to embodiment 2 of the present invention;
fig. 5 is a schematic diagram of another arrangement structure of a turning nonmetallic pipeline according to embodiment 2 of the present invention.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the related technical problems in the prior art, the embodiment of the application provides an underground nonmetallic pipeline detection positioning method, which aims to provide a detection method with simple and efficient operation and high accuracy, and specifically comprises the following steps:
example 1
In the prior art, the nonmetal pipelines are generally buried along the direction of the arterial road of the city, so that the buried direction and the general position of the pipelines can be basically determined according to the information (such as the length, the trend, the embedded depth of a certain point and the like) provided by the urban planning department, and the direction perpendicular to the arterial road is further determined. The utility model provides a mainly used has the detection of nonmetal pipeline of certain pressure liquid, specifically when using, sets up sound wave signal generating device on nonmetal pipeline, sets up the adapter in nonmetal pipeline's the direction of burying, utilizes the sound wave principle, and the adapter confirms horizontal position and buries the depth through detecting the propagation of sound wave in nonmetal pipeline. The specific operation mode is as follows:
step one: 1-2, an acoustic signal generating device is installed on a non-metallic pipeline at a near end, a non-metallic pipeline to be detected can be found in a pipeline well, and a pickup is arranged at the far end of the non-metallic pipeline, the acoustic signal generating device sends out a first acoustic signal, the first acoustic signal propagates in the non-metallic pipeline and liquid in the non-metallic pipeline, and the first acoustic signal propagates along the non-metallic pipeline, namely, propagates from the near end to the far end of the non-metallic pipeline. The matched pickup is placed in the area of the far-end nonmetal pipeline, and the pickup receives a first sound wave signal propagated in the nonmetal pipeline, so that the first sound wave signal is determined to be propagated in the nonmetal pipeline, and meanwhile, the first sound wave signal can be propagated upwards from the nonmetal pipeline to the ground and received by the pickup, and the area where the nonmetal pipeline is located is further determined. Meanwhile, the pickup moves along the section direction of the nonmetallic pipeline, namely, the pickup moves on the ground along the direction perpendicular to the nonmetallic pipeline, the position of the pickup closest to the nonmetallic pipeline is determined according to the strength of signals received by the pickup, and the horizontal position of the nonmetallic pipeline on the ground is also determined. In this step, determining the horizontal position of the nonmetallic pipeline includes the steps of:
the first point A1 of the section direction of the nonmetal pipeline is determined, the second point A2 of the section direction of the nonmetal pipeline is determined, and a connecting line between the A1 and the A2 spans across the nonmetal pipeline, so that the shortest distance between the nonmetal pipeline and the pickup can be better found when the pickup is moved from one point to the other.
The pickup moves from A1 to A2, and the position where the pickup receives the signal most strongly is determined as the horizontal position of the nonmetallic pipeline. However, when the pickup is moving, it cannot be determined whether the line between A1 and A2 crosses over the nonmetallic line, it may gradually move from any point of A1 or A2 toward the opposite direction until the pickup stops at the strongest signal received by the pickup. Through the steps, the horizontal position information of the nonmetallic pipeline can be accurately determined.
In order to more accurately determine the position of a nonmetallic pipeline, particularly the buried depth position of the nonmetallic pipeline, the method further comprises the following steps:
step two: according to the horizontal position of the nonmetallic pipeline determined in the step one, the pickup is arranged along the extending direction of the nonmetallic pipeline, namely, the pickup is arranged on the ground right above the nonmetallic pipeline, and the horizontal straight line distance between the pickup and the sound wave signal generating device is d 1 ，d 1 The specific value is obtained by in-situ measurement, and the determination of the value needs to ensure that the underground nonmetallic pipeline is also arranged in a straight line from the near end to the pickup section.
Step three: the sound wave signal generating device sends out a second sound wave signal and a third sound wave signal, the second sound wave signal propagates along the nonmetal pipeline, namely, the second sound wave signal propagates along the nonmetal pipeline and liquid in the nonmetal pipeline from the near end to the far end of the nonmetal pipeline, the sound pickup receives the second sound wave signal propagated in the nonmetal pipeline, the sound pickup is sent out to ensure that the sound pickup is arranged at the position right above the nonmetal pipeline, and the second sound wave signal and the first sound wave signal can be the same signal. For the purpose of distinguishing, the frequencies of the second acoustic signal and the third acoustic signal may be set differently, specifically selected as actually needed. The third acoustic wave signal is propagated by taking the land as a medium, the pickup receives the third acoustic wave signal, the third acoustic wave signal is transmitted by a linear distance, and meanwhile, the propagation speed of the third acoustic wave signal in the land is v 1 ，v 1 For a fixed value, the time for the pickup to receive the third sound wave signal is t 1 The straight line distance between the pickup and the sound wave signal generating device is determined to be s through timing 1 ＝v 1 *t 1 ；
Based on the above measurement mode, the connection line between the pickup and the nonmetal line to be measured is perpendicular to the nonmetal line to be measured, so that the following formula can be established:
step four: according to the formula: s is(s) 1 2 ＝d 1 2 +h 1 2 Wherein h is 1 The vertical distance between the pickup and the nonmetal pipeline can be directly calculated by the formula, and the distance is the burial depth h of the nonmetal pipeline 1 。
Step five: marking marks and burial depth information on the ground of the nonmetal pipeline detected by the sound pick-up.
The above process is a method of directly detecting the nonmetallic pipeline to be detected, in order to check the accuracy of the measurement, the detected burial depth of the nonmetallic pipeline can be compared with the predetermined depth range of the pipeline laying unit, specifically, the method further comprises a comparison judging step between the step four and the step five:
determining the embedded depth range H of a nonmetallic pipeline 1 And comparing the measured burial depths h of the nonmetallic pipelines 1 And a pre-buried depth range H 1 ；
When h 1 At H 1 In the range, the fifth step is carried out, namely the determination of the nonmetallic pipeline is accurate; when h 1 Beyond H 1 And if the range is out, the fifth step is not performed.
According to the method, the oscillator is arranged at the near end of the nonmetallic pipeline to be measured, the ultrasonic signals are transmitted to the nonmetallic pipeline to be measured and the land simultaneously, the horizontal position of the nonmetallic pipeline to be measured is determined through the pickup, the linear distance s between the pickup and the ultrasonic signal generating device and the distance d between the pickup and the ultrasonic signal generating device are further utilized, the burial depth h of the nonmetallic pipeline is calculated, and therefore the specific burial information of the nonmetallic pipeline is finally determined. The method is simple and efficient, has high calculation accuracy and smaller error, and can be applied to detection of various pipelines.
Example 2
In the prior art, the laying of the pipeline may encounter a corner, such as a corner of 90 degrees on a relatively large street, and in order to detect the embedded information of the nonmetallic pipeline after the corner, the following steps are further required:
specifically, as shown in fig. 3-5, the basic steps are as in embodiment 1, and further include a step six:
placing the pick-up in the first step (defined as pick-up A) at the corner of the nonmetal pipeline, and placing another pick-up (defined as pick-up B) at a point behind the corner, and determining the horizontal distance d between the two pick-ups 2 The time difference of the two sound pick-up devices for receiving the second sound signal is t 2 The propagation speed of sound wave in nonmetallic pipeline is v 2 Thereby determining the length s between nonmetallic pipelines between two sound pick-up devices 2 ＝t 2 *v 2 ；
By the formula: s is(s) 2 2 ＝h 0 2 +d 2 2 Determining a height difference between two pickups, wherein h 0 Is the error height;
the vertical height of the nonmetal pipeline at the pickup after turning is h 2 ＝h 1 ±h 0 ；
Determining the embedded depth range H of a nonmetallic pipeline 2 And comparing the measured burial depths h of the nonmetallic pipelines 2 And a pre-buried depth range H 2 ；
When h 2 At H 2 In the range, performing the fifth step; when h 2 Beyond H 2 And if the range is out, the fifth step is not performed.
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.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (4)
1. The underground nonmetallic pipeline detection and positioning method is characterized by comprising the following steps of:
step one: the sound wave signal generating device is arranged on a non-metal pipeline at the near end, and a sound pickup is arranged at the far end of the non-metal pipeline, the sound wave signal generating device sends out a first sound wave signal, the first sound wave signal propagates along the non-metal pipeline, the sound pickup receives the first sound wave signal propagated in the non-metal pipeline, and meanwhile, the sound pickup moves along the cross section direction of the non-metal pipeline to determine the horizontal position of the non-metal pipeline;
step two: according to the horizontal position of the nonmetallic pipeline determined in the step one, the pickup is arranged along the extending direction of the nonmetallic pipeline, and the horizontal straight line distance between the pickup and the sound wave signal generating device is d 1 ；
Step three: the sound wave signal generating device sends out a second sound wave signal and a third sound wave signal, the second sound wave signal propagates along the nonmetal pipeline, and the sound pickup receives the second sound wave signal propagated in the nonmetal pipeline; the third acoustic wave signal propagates by taking the land as a medium, the pickup receives the third acoustic wave signal, and the propagation speed of the third acoustic wave signal in the land is v 1 The time for the pickup to receive the third sound wave signal is t 1 Determining the straight line distance between the pickup and the sound wave signal generating device as s 1 ＝v 1 *t 1 ；
Step four: according to the formula: s is(s) 1 2 ＝d 1 2 +h 1 2 Wherein h is 1 Is the burial depth of the nonmetallic pipeline;
step five: marking marks and burial depth information on the ground of the nonmetal pipeline detected by the sound pick-up;
in step one, determining the horizontal position of the nonmetallic pipeline includes the steps of:
determining a first point A1 of the section direction of the nonmetallic pipeline, and simultaneously determining a second point A2 of the section direction of the nonmetallic pipeline, wherein a connecting line between the A1 and the A2 spans the nonmetallic pipeline;
the pickup moves from A1 to A2, and the position where the pickup receives the signal most strongly is determined as the horizontal position of the nonmetallic pipeline.
2. The method for locating an underground nonmetallic pipeline according to claim 1, further comprising a comparison judging step between the fourth step and the fifth step:
determining the embedded depth range H of a nonmetallic pipeline 1 And comparing the measured burial depths h of the nonmetallic pipelines 1 And a pre-buried depth range H 1 ；
When h 1 At H 1 In the range, performing the fifth step; when h 1 Beyond H 1 And if the range is out, the fifth step is not performed.
3. The method for locating an underground nonmetallic pipeline according to claim 2, further comprising the step of:
placing the pickup in the first step at the corner of the nonmetal pipeline, and placing another pickup at a point behind the corner, and determining the horizontal distance d between the two pickup 2 The time difference of the two sound pick-up devices for receiving the second sound signal is t 2 The propagation speed of sound wave in nonmetallic pipeline is v 2 Thereby determining the length s between nonmetallic pipelines between two sound pick-up devices 2 ＝t 2 *v 2 ；
By the formula: s is(s) 2 2 ＝h 0 2 +d 2 2 Determining a height difference between two pickups, wherein h 0 Is the error height;
the vertical height of the nonmetal pipeline at the pickup after turning is h 2 ＝h 1 ±h 0 ；
Determining the embedded depth range H of a nonmetallic pipeline 2 And comparing the measured burial depths h of the nonmetallic pipelines 2 And a pre-buried depth range H 2 ；
When h 2 At H 2 In the range, performing the fifth step; when h 2 Beyond H 2 And if the range is out, the fifth step is not performed.
4. The method for detecting and positioning an underground nonmetallic pipeline according to claim 1, wherein the sound wave signal generating device comprises an oscillator, a power divider and a signal amplifier, 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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| CN112596100B (en) * | 2020-11-26 | 2023-10-03 | 武汉华通正勤检测技术有限公司 | Pipeline position detection method based on acoustic wave detection |
| CN115586567B (en) * | 2022-11-01 | 2023-07-18 | 西安管畅环保科技有限公司 | Buried nonmetallic pipeline acoustic wave detection device based on acoustic velocity factor |
| CN115793035B (en) * | 2022-11-11 | 2023-06-30 | 北京信息科技大学 | Underground nonmetallic pipeline detection system and method based on active excitation of sound waves |
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