Application Analysis of UAV in Water Conservancy Engineering Survey

Application Analysis of UAV in Water Conservancy Engineering Survey

The application of UAV can realize low-altitude remote sensing of engineering construction and management, and complete rapid mapping and information monitoring of engineering. So what is the application of UAV in water conservancy engineering survey?

As we all know, water conservancy project is an important infrastructure project, which is of great significance to promoting economic development and social progress. At present, with the development of science and technology, the construction of water conservancy projects is becoming more and more modern. Especially in water conservancy engineering survey, the application of modern science and technology has greatly improved the efficiency and quality of engineering survey. In particular, the use of drones, relying on their own flexibility, can quickly obtain data and make a big difference. This paper mainly discusses the application of UAV in hydraulic engineering survey.

China has a vast monsoon climate zone, and the huge difference in thermal properties between land and sea leads to uneven distribution of precipitation in time and space, and frequent droughts and floods. With the improvement of China's water conservancy infrastructure and the continuous improvement of water conservancy informatization level, information mapping technology combined with advanced space technology, communication technology and other advanced technologies is more and more widely used in water conservancy engineering survey practice, which provides accurate and intuitive data analysis for the design and construction of water conservancy projects and improves the scientific nature of engineering decision-making. In recent years, with the use of unmanned aerial vehicles (UAVs), the take-off and landing modes are flexible, autonomous flight and low-altitude tracking, and data can be obtained quickly, especially the related equipment in UAVs, which can collect aerial images and engineering data, which is beneficial to the construction of three-dimensional models and lays the foundation for scientific decision-making in engineering.

1. Application of UAV in Water Conservancy Project

(A) the scope of application of unmanned aerial vehicles in water conservancy projects

In the hydraulic engineering industry, engineering construction and management are closely related to environmental assessment and safety monitoring of engineering construction, and the application of UAV can realize low-altitude remote sensing of engineering construction and management, and complete rapid mapping and information monitoring of engineering. Because engineering monitoring has the characteristics of high data resolution and fast implementation speed, and UAV monitoring also has the advantages of strong flexibility and high resolution, combining advanced spatial information technology and GPS technology can provide scientific data basis for water conservancy project construction and scientific decision-making.

(2) Application analysis of UAV in water conservancy project.

1. Application of UAV in Surveying and Mapping of Water Conservancy Project

Ordinary aerial photography can also be used for engineering surveying and mapping, but due to the lack of flexibility, it is very difficult to obtain images under the cloud, and the timeliness and resolution of satellite remote sensing are low. Therefore, in the surveying and mapping practice of water conservancy projects, it is often necessary to repeat surveying and mapping, which is inefficient. Using unmanned aerial vehicle (UAV), remote sensing equipment loaded with data, remote sensing data processing system and 3S technology, the target can be effectively observed and processed. By using UAV technology, real-time data acquisition and rapid processing of targets can be realized. On the other hand, through the application of UAV technology, UAV remote sensing image technology can synthesize monitoring images in different periods in false color, thus analyzing the water regime in different areas of the project and providing effective information for scientific decision-making.

2. The specific application of UAV in dynamic monitoring of water conservancy project and water environment monitoring.

China is rich in water resources, with numerous river basins and wide rivers, which has an important impact on economic development. Through the use of UAV technology, we can realize the dynamic monitoring of water changes, master the basic data of water areas, lay the foundation for the investigation and statistics of water areas, gradually realize the informationization of water area management, and pave the way for the modernization of water conservancy management [1].

3. The concrete application of UAV in water and soil conservation of water conservancy projects.

With the development of economy, under the joint action of various factors, the problem of soil erosion in China is becoming more and more serious, even becoming one of the most important environmental problems. Especially in the construction of water conservancy projects, the statistics of water and soil loss in river basins are time-consuming and laborious, and the accuracy is not high. With the application of UAV technology, the study of soil and water conservation begins with the quantification of soil erosion. Through the obtained remote sensing images, we can analyze the problem of soil erosion, formulate reasonable control strategies and ensure the sustainable development of water conservancy projects.

Second, the effective application of UAV in hydraulic engineering survey

(1) Overview

The specific application of UAV technology in hydraulic engineering survey mainly involves UAV low-altitude photogrammetry system. In order to work normally, the measurement system must ensure that the flight platform, flight navigation and control system, digital camera equipment, data transmission, ground monitoring, launch and recovery, ground support equipment and other systems are in normal working condition [2].

UAV low-altitude photogrammetry system has a wide range of practical applications, especially in land use dynamic monitoring, geological disaster exploration, mineral resources exploration, marine resources exploration, environmental monitoring and so on. UAV technology has important applications. It is worth mentioning that drones are also widely used in water conservancy engineering survey. In the application process, it is necessary to design according to the ground resolution, aerial photography range, time, route layout, image overlap, etc. to ensure the application effect [3].

(2) Operation plan

Taking the surveying and mapping work of a water conservancy project as an example, the application scheme of UAV technology in water conservancy project survey is discussed. In this mapping mission, the UAV low-altitude photogrammetry system divided it into seven sorties when designing the mapping mission. In the process of surveying and mapping, a fourth-class GPS network was set up for the plane control mesh, and 24 GPS marker points were buried, and three national triangulation points need to be jointly measured. With regard to elevation control, four or five sets of leveling results have been adopted in surveying and mapping. Regarding the image control points, the regional network layout scheme is very suitable for this survey practice, and the span between two adjacent image control points is controlled between 8- 12 baseline. In order to ensure the smooth development of surveying and mapping work, the position of image control points is also very important. For this reason, it is generally selected within the overlapping range of six or five pieces in the heading and transverse direction. In the actual survey work, GPS-RTK is used to jointly survey the image control points and determine their three-dimensional coordinates. The condition of data acquisition is that the HRMS and VRMS of the fixed solution are not higher than 0.02m[4], and the average of the two measured values is taken as the final measurement result.

This aerial photography, drone aerial photography was carried out 7 times respectively. The aerial camera model is Canon 5D Mark II, and the final ground resolution is 17cm. The ground data is collected with VirtuoZo NT 3.5, and the final mapping is formed with CASS9. 1 software, and the results are output. The specific workflow is shown in the following figure 1.

(3) Relevant contents of specific implementation

The specific application of UAV in water conservancy engineering survey mainly includes low-altitude photogrammetry and aerial triangulation. In the aspect of low-altitude photogrammetry, Canon 5D Mark II aerial camera was used to measure the water conservancy project, including 36 routes and 3383 photos. The shooting focal length is 0.035mm, the absolute height is 1200m, the baseline distance is 190m, the route distance is 528m, the average resolution is 0. 16, the heading overlap is 68.58%, and the lateral overlap is 4 1.65%. According to the relevant statistics, the errors all meet the relevant requirements, indicating that the aerial photography quality of UAV meets all indicators. About aerial triangulation, aerial triangulation is encrypted under VirtuoZo digital photogrammetry workstation, and the encryption software is in Inpho. In order to ensure work efficiency, the encryption method used in this survey is partition encryption. The encryption process is shown in Figure 2, and three empty encryption points are automatically matched by the computer [5]. Inpho software has the function of adjustment settlement, which can calculate the adjustment of regional network and improve the measurement accuracy [6]. In order to ensure the accuracy of detection, it is necessary to correct the distortion of aerial photographs, establish data files and camera files, do the work of image point matching, aerial belt connection and field image control point adjustment, and do the necessary quality inspection.

Conclusion:

With the economic development and scientific and technological progress in China, more and more scientific and technological achievements will be applied to practice. As an important infrastructure in China, water conservancy project is a project that benefits the country and the people, and it needs to continuously introduce advanced scientific and technological achievements to improve its own construction quality. Therefore, the application of UAV in water conservancy engineering survey practice is of great significance to promote the sustainable development of water conservancy engineering while improving the measurement accuracy. What is it like?

As we all know, water conservancy project is an important infrastructure project, which is of great significance to promoting economic development and social progress. At present, with the development of science and technology, the construction of water conservancy projects is becoming more and more modern. Especially in water conservancy engineering survey, the application of modern science and technology has greatly improved the efficiency and quality of engineering survey. In particular, the use of drones, relying on their own flexibility, can quickly obtain data and make a big difference. This paper mainly discusses the application of UAV in hydraulic engineering survey.

China has a vast monsoon climate zone, and the huge difference in thermal properties between land and sea leads to uneven distribution of precipitation in time and space, and frequent droughts and floods. With the improvement of China's water conservancy infrastructure and the continuous improvement of water conservancy informatization level, information mapping technology combined with advanced space technology, communication technology and other advanced technologies is more and more widely used in water conservancy engineering survey practice, which provides accurate and intuitive data analysis for the design and construction of water conservancy projects and improves the scientific nature of engineering decision-making. In recent years, with the use of unmanned aerial vehicles (UAVs), the take-off and landing modes are flexible, autonomous flight and low-altitude tracking, and data can be obtained quickly, especially the related equipment in UAVs, which can collect aerial images and engineering data, which is beneficial to the construction of three-dimensional models and lays the foundation for scientific decision-making in engineering.

1. Application of UAV in Water Conservancy Project

(A) the scope of application of unmanned aerial vehicles in water conservancy projects

In the hydraulic engineering industry, engineering construction and management are closely related to environmental assessment and safety monitoring of engineering construction, and the application of UAV can realize low-altitude remote sensing of engineering construction and management, and complete rapid mapping and information monitoring of engineering. Because engineering monitoring has the characteristics of high data resolution and fast implementation speed, and UAV monitoring also has the advantages of strong flexibility and high resolution, combining advanced spatial information technology and GPS technology can provide scientific data basis for water conservancy project construction and scientific decision-making.

(2) Application analysis of UAV in water conservancy project.

1. Application of UAV in Surveying and Mapping of Water Conservancy Project

Ordinary aerial photography can also be used for engineering surveying and mapping, but due to the lack of flexibility, it is very difficult to obtain images under the cloud, and the timeliness and resolution of satellite remote sensing are low. Therefore, in the surveying and mapping practice of water conservancy projects, it is often necessary to repeat surveying and mapping, which is inefficient. Using unmanned aerial vehicle (UAV), remote sensing equipment loaded with data, remote sensing data processing system and 3S technology, the target can be effectively observed and processed. By using UAV technology, real-time data acquisition and rapid processing of targets can be realized. On the other hand, through the application of UAV technology, UAV remote sensing image technology can synthesize monitoring images in different periods in false color, thus analyzing the water regime in different areas of the project and providing effective information for scientific decision-making.

2. The specific application of UAV in dynamic monitoring of water conservancy project and water environment monitoring.

China is rich in water resources, with numerous river basins and wide rivers, which has an important impact on economic development. Through the use of UAV technology, we can realize the dynamic monitoring of water area changes, master the basic data of water areas, lay the foundation for the investigation and statistics of water areas, gradually realize the informationization of water area management, and pave the way for the modernization of water conservancy management [1].

3. The concrete application of UAV in water and soil conservation of water conservancy projects.

With the development of economy, under the joint action of various factors, the problem of soil erosion in China is becoming more and more serious, even becoming one of the most important environmental problems. Especially in the construction of water conservancy projects, the statistics of water and soil loss in river basins are time-consuming and laborious, and the accuracy is not high. With the application of UAV technology, the study of soil and water conservation begins with the quantification of soil erosion. Through the obtained remote sensing images, we can analyze the problem of soil erosion, formulate reasonable control strategies and ensure the sustainable development of water conservancy projects.

Second, the effective application of UAV in hydraulic engineering survey

(1) Overview

The specific application of UAV technology in hydraulic engineering survey mainly involves UAV low-altitude photogrammetry system. In order to work normally, the measurement system must ensure that the flight platform, flight navigation and control system, digital camera equipment, data transmission, ground monitoring, launch and recovery, ground support equipment and other systems are in normal working condition [2].

UAV low-altitude photogrammetry system has a wide range of practical applications, especially in land use dynamic monitoring, geological disaster exploration, mineral resources exploration, marine resources exploration, environmental monitoring and so on. UAV technology has important applications. It is worth mentioning that drones are also widely used in water conservancy engineering survey. In the application process, it is necessary to design according to the ground resolution, aerial photography range, time, route layout, image overlap, etc. to ensure the application effect [3].

(2) Operation plan

Taking the surveying and mapping work of a water conservancy project as an example, the application scheme of UAV technology in water conservancy project survey is discussed. In this mapping mission, the UAV low-altitude photogrammetry system divided it into seven sorties when designing the mapping mission. In the process of surveying and mapping, a fourth-class GPS network was set up for the plane control mesh, and 24 GPS marker points were buried, and three national triangulation points need to be jointly measured. With regard to elevation control, four or five sets of leveling results have been adopted in surveying and mapping. Regarding the image control points, the regional network layout scheme is very suitable for this survey practice, and the span between two adjacent image control points is controlled between 8- 12 baseline. In order to ensure the smooth development of surveying and mapping work, the position of image control points is also very important. For this reason, it is generally selected within the overlapping range of six or five pieces in the heading and transverse direction. In the actual survey work, GPS-RTK is used to jointly survey the image control points and determine their three-dimensional coordinates. The condition of data acquisition is that the HRMS and VRMS of the fixed solution are not higher than 0.02m[4], and the average of the two measured values is taken as the final measurement result.

This aerial photography, drone aerial photography was carried out 7 times respectively. The aerial camera model is Canon 5D Mark II, and the final ground resolution is 17cm. The ground data is collected with VirtuoZo NT 3.5, and the final mapping is formed with CASS9. 1 software, and the results are output. The specific workflow is shown in the following figure 1.

(3) Relevant contents of specific implementation

The specific application of UAV in water conservancy engineering survey mainly includes low-altitude photogrammetry and aerial triangulation. In the aspect of low-altitude photogrammetry, Canon 5D Mark II aerial camera was used to measure the water conservancy project, including 36 routes and 3383 photos. The shooting focal length is 0.035mm, the absolute height is 1200m, the baseline distance is 190m, the route distance is 528m, the average resolution is 0. 16, the heading overlap is 68.58%, and the lateral overlap is 4 1.65%. According to the relevant statistics, the errors all meet the relevant requirements, indicating that the aerial photography quality of UAV meets all indicators. About aerial triangulation, aerial triangulation is encrypted under VirtuoZo digital photogrammetry workstation, and the encryption software is in Inpho. In order to ensure work efficiency, the encryption method used in this survey is partition encryption. The encryption process is shown in Figure 2, and three empty encryption points are automatically matched by the computer [5]. Inpho software has the function of adjustment settlement, which can calculate the adjustment of regional network and improve the measurement accuracy [6]. In order to ensure the accuracy of detection, it is necessary to correct the distortion of aerial photographs, establish data files and camera files, do the work of image point matching, aerial belt connection and field image control point adjustment, and do the necessary quality inspection.

Conclusion:

With the economic development and scientific and technological progress in China, more and more scientific and technological achievements will be applied to practice. As an important infrastructure in China, water conservancy project is a project that benefits the country and the people, and it needs to continuously introduce advanced scientific and technological achievements to improve its own construction quality. Therefore, the application of UAV in water conservancy engineering survey practice is of great significance to promote the sustainable development of water conservancy engineering while improving the measurement accuracy.

;