Reservoir landslide array type underwater deformation monitoring device and monitoring method

Abstract

The invention provides a reservoir landslide array type underwater deformation monitoring device and monitoring method. An anchorage is buried in an underwater monitoring point of a slide body, and a floating shell is used for floating on the water surface; a GPS sensor is used for receiving and transmitting GPS signals to obtain the real-time position of the floating shell, a water temperature sensor is used for obtaining a water temperature time sequence, and a gravity wave meter is used for obtaining a water surface wave height time sequence; and the upper end of a pull rope is fixedly connected with the floating shell through a displacement compensation mechanism, the lower end of the pull rope is fixedly connected with the anchorage, the displacement compensation mechanism is used for carrying out displacement compensation after the floating shell floats along with waves, and an encoding type displacement meter is used for measuring the real-time distance between the encoding type displacement meter and the anchorage. The technical scheme provided by the invention has the beneficial effects that the real-time three-dimensional coordinates of the underwater monitoring point are monitored through a float type monitor, and the underwater three-dimensional space coordinate change of the landslide mass can be accurately positioned. Related environmental factors are recorded in real time, and functions of real-time information acquisition, storage, processing analysis, transmission and the like are integrated.

Description

technical field [0001] The invention relates to the technical field of underwater deformation monitoring of reservoir landslides, in particular to an array-type underwater deformation monitoring device and monitoring method for reservoir landslides. Background technique [0002] Landslides are a serious geological hazard worldwide. With the advancement and completion of the construction of the Three Gorges Project, the number of ancient landslides resurrected under the influence of reservoir water levels has increased, posing a certain threat to the lives and property of people in the reservoir area. After the front part of the reservoir landslide is immersed in water, the physical and mechanical properties of the slide are changed, and the cohesion and internal friction angle decrease, and the decreasing trend is positively correlated with the water depth. Fluctuations in the water level of the reservoir make the material at the leading edge of the slide body lose and becom...

AI Technical Summary

Problems solved by technology

At present, the commonly used method for underwater measurement is the sonar measurement method (CN202010610338.4). Due to the difficulty of precise positioning of the measuring instruments on the water surface and the relatively large error of the sonar measurement method itself, it cannot meet the requirements of landslide deformation monitoring.

Although the underwater monitoring method based on the extensometer used by the China Institute of Geological and Environmental Monitoring on the Shuping landslide has a good effect, the implementation technology is too old and is easily affected by water surges

Images