Dam slope deformation monitoring system and method

Abstract

The invention provides a dam slope deformation monitoring system and method. According to the monitoring system, an unmanned aerial vehicle photogrammetry system is utilized to monitor dams in the whole reservoir area, and an encrypted monitoring area with large deformation quantity and large digital elevation difference (a steep slope) is determined; in the encrypted monitoring area, a ground-based interferometric radar measurement system is utilized to determine a first level key area with larger deformation quantity; in the first level key area, a ground-based three-dimensional laser radarsystem is adopted to select a second level key area with larger deformation quantity, a global navigation satellite system (GNSS) is adopted in the second level key area to determine a key monitoringparticle with high deformation speed, and a micro core pile is utilized to monitor and forewarn the collapse process of the key monitoring particle area. According to the dam slope deformation monitoring system and method, precise positioning of the collapse position of the dams in the whole reservoir area and integrated monitoring and early warning of space, air and ground are achieved through time seamless monitoring from slow to fast to the instant of collapse and full coverage monitoring from large area to small area to particle and from two-dimensional to three-dimensional space variation.

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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