A dam slope deformation monitoring system and method

Abstract

The invention provides a dam slope deformation monitoring system and method. The monitoring system uses the unmanned aerial vehicle photogrammetry system to monitor the entire dam in the reservoir area, and determines the encrypted monitoring area with large deformation and large digital elevation difference (steep slope); in the encrypted monitoring area, the ground-based interferometric radar measurement system is used Determine the first-level key areas with larger deformation; in the first-level key areas, use the ground-based 3D laser radar measurement system to select the second-level key areas with greater deformation, and use the global positioning and navigation system (GNSS) to determine the deformation in the second-level key monitoring areas. The key monitoring particle with fast speed uses micro-core piles to monitor and warn the collapse process of the key monitoring particle area. The present invention realizes the precise monitoring of the collapsed parts of the dam in the entire reservoir area through time-seamless monitoring from slow to fast to the moment of collapse and full-coverage monitoring of spatial changes from large areas to small areas to particles and two-dimensional to three-dimensional. Positioning and air-space-ground integrated monitoring and early warning.

Description

technical field [0001] The invention relates to the field of slope monitoring, in particular to a system and method for monitoring deformation of a dam slope. Background technique [0002] Reservoir dams are important infrastructure and an important guarantee for flood control safety, water supply safety, and energy security. As of 2019, China has built more than 98,000 reservoir dams of various types. However, due to factors such as construction technology, terrain and landform factors, climate factors, and dam service life, more than 3,000 dams have suffered dam failures, and earth-rock dams accounted for 89.7% of the dam failures above 30 meters. It has caused serious loss of life and property and ecological loss to the society and the people. Therefore, the safety of reservoirs and dams is closely related to people's lives. Dam safety monitoring can reflect the operation status of the dam in real time and provide timely feedback on the "health status" of the dam, which ...

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Problems solved by technology

[0003] However, due to limited monitoring methods, in the aspect of non-destructive testing of large-scale hydraulic structures, continuous practice and testing are still required to master advanced technologies and carry out non-contact monitoring of slope deformation.

Especially in the work of slope deformation monitoring of hydraulic dams, due to the relatively large coverage of slope topography and the wide distribution of large-volume hydraulic structures, it is time-consuming and laborious to obtain topographic and surface data by traditional means. And it is difficult to obtain high-precision data for high and steep areas

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