CN113503793A - Method for rapidly monitoring cracks of dam of hydropower station - Google Patents
Method for rapidly monitoring cracks of dam of hydropower station Download PDFInfo
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- CN113503793A CN113503793A CN202110757349.XA CN202110757349A CN113503793A CN 113503793 A CN113503793 A CN 113503793A CN 202110757349 A CN202110757349 A CN 202110757349A CN 113503793 A CN113503793 A CN 113503793A
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- dam
- measuring
- cracks
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- scale
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a method for rapidly monitoring a hydropower station dam crack, which comprises the following steps: (1) establishing a model on a computer by utilizing drawing software according to the ratio of 1:1 for a dam to be monitored; (2) aerial photography is carried out on the surface of the dam by using a small unmanned aerial vehicle, the position of a crack on the surface of the dam is found, and a measuring scale for measuring the width and the length of the crack is arranged around the crack; (3) regularly utilizing the small unmanned aerial vehicle to accurately acquire data of the discovered cracks, transmitting the acquired data to a background, continuously searching for new cracks, and repeating the steps (2) and (3); (4) and calculating the length and the width of the dam crack according to the collected data, and making risk evaluation. The method can quickly and accurately monitor the width of the transverse crack and the length of the longitudinal crack of the dam crack in a certain monitoring period, and greatly improves the monitoring efficiency of the dam crack.
Description
Technical Field
The invention relates to the field of monitoring equipment, in particular to a method for rapidly monitoring a hydropower station dam crack.
Background
In the long-time use of dam, like the impact of rivers to it for a long time, or the change of temperature, all can make the dam corresponding crack can appear, therefore, in order to improve the security of dam, need regularly monitor the dam crack to get rid of the hidden danger.
Conventionally, a manual step-by-step troubleshooting method is most commonly adopted for crack inspection, people are bound by safety ropes and are debugged one by one from top to bottom, the troubleshooting method is time-consuming and labor-consuming, needs a large number of auxiliary devices and personnel, is high in cost, and is difficult to meet the requirement of short-term repeated inspection; the method for checking the dam body crack by the unmanned aerial vehicle or other auxiliary equipment is adopted subsequently, and the crack monitored by the method is not measured by a reference object, so that the width and the length of the crack can not be accurately judged and calculated, and the length and the width of the crack of the dam body can not be accurately measured. Therefore, timely analysis and processing cannot be performed for dam safety.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rapid monitoring method for the dam cracks of the hydropower station, which has high working efficiency and good safety and can rapidly and accurately monitor the dam crack condition, aiming at the defects of the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows: a method for rapidly monitoring cracks of a hydropower station dam is characterized by comprising the following steps:
(1) modeling: establishing a model on a computer by utilizing drawing software according to the ratio of 1:1 for a dam to be monitored;
(2) selecting a small unmanned aerial vehicle, assembling auxiliary equipment on the small unmanned aerial vehicle, taking an aerial photograph on the surface of the dam by using the small unmanned aerial vehicle, finding out the position of a crack on the surface of the dam, and installing a measuring scale for measuring the width and the length of the crack around the crack; and labeling on the model;
(3) regularly utilizing the small unmanned aerial vehicle to accurately acquire data of the discovered cracks, transmitting the acquired data to a background, continuously searching for new cracks, and repeating the steps (2) and (3);
(4) and (4) calculating the length and the width of the dam crack according to the data collected in the step (3), and making risk evaluation.
Preferably, in the step (2), the auxiliary equipment for assembling the small unmanned aerial vehicle comprises a high-definition camera, a GPS positioning system, an inertial navigation system, a laser radar and a sensor.
Preferably, in the step (2), the measuring scales for measuring the width and the length of the crack comprise two longitudinal measuring scales for measuring the length of the crack and a plurality of transverse measuring scales for measuring the width of the crack; the scales are correspondingly arranged between the longitudinal measuring scale and the longitudinal measuring scale, and the scales are correspondingly arranged between the transverse measuring scale and the transverse measuring scale.
More preferably, the longitudinal measuring scale and the transverse measuring scale are both made of transparent materials.
Preferably, in the step (2), the measuring scale for measuring the width and the length of the crack includes a first monitoring scale and a second monitoring scale, the first monitoring scale is L-shaped, and the second monitoring scale is rectangular; the first monitoring ruler is provided with a first transverse scale and a first longitudinal scale; the second monitoring ruler is provided with a second transverse scale and a second longitudinal scale corresponding to the first transverse scale and the first longitudinal scale.
More preferably, the first monitoring ruler and the second monitoring ruler are made of transparent materials.
Preferably, the step (3) further comprises a step of checking the dam crack by manual measurement.
Preferably, in the step (3), the discovered cracks are accurately acquired by using a small unmanned aerial vehicle every 10 to 20 days.
Compared with the prior art, the invention has the beneficial effects that: 1. according to the invention, the data of cracks are found and collected by adopting the unmanned aerial vehicle, so that the working efficiency and the safety are greatly improved compared with the traditional manual monitoring and other equipment monitoring; 2. according to the invention, the measuring scales for measuring the width and the length of the cracks are arranged around the cracks at the positions of the cracks on the surface of the dam, and the width of the transverse cracks and the length of the longitudinal cracks of the dam can be rapidly and accurately monitored by arranging the measuring scales, so that the safety of the cracks of the dam can be conveniently analyzed and processed in time, and the probability of measuring errors caused by no reference object is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a measuring scale for measuring the width and length of a crack in a hydropower station dam crack rapid monitoring method in cooperation with the crack;
fig. 2 is a schematic structural view of a measuring scale for measuring the width and length of a crack in the method for rapidly monitoring the crack of a hydroelectric dam according to the present invention, which is used in cooperation with the crack.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
A method for rapidly monitoring cracks of a hydropower station dam comprises the following steps:
(1) modeling: establishing a model on a computer by utilizing drawing software according to the ratio of 1:1 for a dam to be monitored;
(2) selecting a small unmanned aerial vehicle, assembling auxiliary equipment for the small unmanned aerial vehicle, wherein the auxiliary equipment comprises a high-definition camera, a GPS (global positioning system), an inertial navigation system, a laser radar and a sensor, performing aerial photography on the surface of the dam by using the small unmanned aerial vehicle, finding the position of a crack on the surface of the dam, and installing a measuring ruler for measuring the width and the length of the crack around the crack; and labeling on the model; as shown in fig. 1, the measuring scale for measuring the width and length of the crack of the present embodiment includes two longitudinal measuring scales for measuring the length of the crack, and a plurality of transverse measuring scales for measuring the width of the crack; scales are correspondingly arranged between the longitudinal measuring scale and the longitudinal measuring scale, scales are correspondingly arranged between the transverse measuring scale and the transverse measuring scale, the longitudinal measuring scale and the transverse measuring scale are both made of transparent materials, when the device is installed, the longitudinal measuring scale is aligned with 0 scale of the longitudinal measuring scale, and the longitudinal measuring scale is respectively installed on two sides of the crack by using expansion screws or other equipment; similarly, the transverse measuring scale is installed along the crack trend, and the same transverse measuring scale cannot be fixed between two cracks;
(3) every 10-20 days, accurately acquiring data of the discovered cracks by using the small unmanned aerial vehicle, transmitting the acquired data to a background, continuously searching for new cracks, and repeating the steps (2) and (3);
(4) and (4) calculating the length and the width of the dam crack according to the data collected in the step (3), and making risk evaluation.
In order to verify the data authenticity and reduce the monitoring error, a step of manually measuring and checking the dam cracks can be added in the step (3), namely, the dam is accurately measured manually according to the existing mode.
Example 2
A method for rapidly monitoring cracks of a hydropower station dam comprises the following steps:
(1) modeling: establishing a model on a computer by utilizing drawing software according to the ratio of 1:1 for a dam to be monitored;
(2) selecting a small unmanned aerial vehicle, assembling auxiliary equipment on the small unmanned aerial vehicle, wherein the auxiliary equipment of the embodiment is the same as that of embodiment 1, carrying out aerial photography on the surface of the dam by using the small unmanned aerial vehicle, finding out the position of a crack on the surface of the dam, and installing a measuring scale for measuring the width and the length of the crack around the crack; and labeling on the model; as shown in fig. 2, the measuring scale for measuring the width and length of the crack of the embodiment includes a first monitoring ruler 1 and a second monitoring ruler 2, wherein the first monitoring ruler 1 is L-shaped, and the second monitoring ruler 2 is rectangular; the first monitoring ruler 1 is provided with a first transverse scale 11 and a first longitudinal scale 12; the second monitoring ruler 2 is provided with a second transverse scale 21 and a second longitudinal scale 22 corresponding to the first transverse scale 11 and the first longitudinal scale 12, and the first monitoring ruler 1 and the second monitoring ruler 2 are made of transparent materials. When in use, the first and second monitoring rulers 1 and 2 are fixed on both sides of the crack according to the mode of figure 2. The method comprises the steps that the difference between a first transverse scale 11 and a first longitudinal scale 12 on a first monitoring ruler 1 and a second monitoring ruler 2 and between a second transverse scale 21 and a second longitudinal scale 22 on the first monitoring ruler and the second monitoring ruler is measured by an unmanned aerial vehicle or manually, so that the cracking direction and degree of the dam crack can be clear, and the targeted safety analysis and the corresponding measures can be conveniently performed;
(3) every 10-20 days, accurately acquiring data of the discovered cracks by using the small unmanned aerial vehicle, transmitting the acquired data to a background, continuously searching for new cracks, and repeating the steps (2) and (3);
(4) and (4) calculating the length and the width of the dam crack according to the data collected in the step (3), and making risk evaluation.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention. Finally, it should be noted that the contents not described in detail in the specification belong to the prior art known to those skilled in the art, and those skilled in the art can implement the contents without creative efforts, so that the details are not described herein.
Claims (8)
1. A method for rapidly monitoring cracks of a hydropower station dam is characterized by comprising the following steps:
(1) modeling: establishing a model on a computer by utilizing drawing software according to the ratio of 1:1 for a dam to be monitored;
(2) selecting a small unmanned aerial vehicle, assembling auxiliary equipment on the small unmanned aerial vehicle, taking an aerial photograph on the surface of the dam by using the small unmanned aerial vehicle, finding out the position of a crack on the surface of the dam, and installing a measuring scale for measuring the width and the length of the crack around the crack; and labeling on the model;
(3) regularly utilizing the small unmanned aerial vehicle to accurately acquire data of the discovered cracks, transmitting the acquired data to a background, continuously searching for new cracks, and repeating the steps (2) and (3);
(4) and (4) calculating the length and the width of the dam crack according to the data collected in the step (3), and making risk evaluation.
2. The method for rapidly monitoring the cracks of the dam of the hydropower station according to claim 1, wherein in the step (2), auxiliary equipment for assembling the small unmanned aerial vehicle comprises a high-definition camera, a GPS (global positioning system), an inertial navigation system, a laser radar and a sensor.
3. The method for rapidly monitoring cracks in a dam of a hydropower station as defined in claim 1, wherein in the step (2), the measuring scales for measuring the width and the length of the cracks comprise two longitudinal measuring scales for measuring the length of the cracks and a plurality of transverse measuring scales for measuring the width of the cracks; the scales are correspondingly arranged between the longitudinal measuring scale and the longitudinal measuring scale, and the scales are correspondingly arranged between the transverse measuring scale and the transverse measuring scale.
4. The method for rapidly monitoring the cracks of the dam of the hydropower station according to claim 3, wherein the longitudinal measuring scale and the transverse measuring scale are both made of transparent materials.
5. The method for rapidly monitoring the cracks of the dam of the hydropower station according to claim 1, wherein in the step (2), the measuring scales for measuring the width and the length of the cracks comprise a first measuring scale (1) and a second measuring scale (2), the first measuring scale (1) is L-shaped, and the second measuring scale (2) is rectangular; the first monitoring ruler (1) is provided with a first transverse scale (11) and a first longitudinal scale (12); the second monitoring ruler (2) is provided with a second transverse scale (21) and a second longitudinal scale (22) corresponding to the first transverse scale (11) and the first longitudinal scale (12).
6. The method for rapidly monitoring the cracks of the dam of the hydropower station according to claim 5, wherein the first monitoring ruler (1) and the second monitoring ruler (2) are both made of transparent materials.
7. The method for rapidly monitoring the cracks of the dam of the hydropower station according to claim 1, wherein the step (3) further comprises a step of manually measuring and checking the cracks of the dam manually.
8. The method for rapidly monitoring the cracks of the dam of the hydropower station according to claim 1, wherein in the step (3), the discovered cracks are accurately acquired by using a small unmanned aerial vehicle every 10 to 20 days.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848983A (en) * | 2021-10-29 | 2021-12-28 | 武汉大学 | Unmanned aerial vehicle group automatic inspection system and method aiming at dam defect detection |
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