A device and method for testing deterioration of rock mass in reservoir bank drawdown zone under wave action of a ship

By designing an experimental device for the degradation of rock mass in the drawdown zone of the reservoir bank under the action of ship swell, the experiment simulates the scouring and erosion of the bank slope by the swell of ships traveling in the reservoir. It reveals the influence law and instability mechanism of ship swell on the rock mass in the drawdown zone of the reservoir bank, and fills the research gap in the existing technology that ignores the erosion of ship swell.

CN115585982BActive Publication Date: 2026-07-17WUHAN CENT CHINA GEOLOGICAL SURVEY CENT SOUTH CHINA INNOVATION CENT FOR GEOSCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN CENT CHINA GEOLOGICAL SURVEY CENT SOUTH CHINA INNOVATION CENT FOR GEOSCIENCES
Filing Date
2022-09-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, research on the deterioration of reservoir bank rock masses mainly focuses on the effects of reservoir water level and rainfall, neglecting the erosive effect of ship surge waves on reservoir bank rock masses, resulting in a research gap.

Method used

Design an experimental device for the degradation of rock mass in the drawdown zone of a reservoir bank under the action of ship swells. The device includes a model box, a bank slope model, a ship model, an inlet tank, an outlet tank, a storage tank, and a data monitoring system. By simulating the movement of a ship in the reservoir, the device simulates the scouring and erosion of the bank slope by swells. The data monitoring system is used for analysis. By adjusting the water flow velocity and turbine blade shape in the model box, different water flow and wave conditions are simulated.

Benefits of technology

The fatigue test effectively simulated the impact of ship swells on the rock mass of the reservoir bank drawdown zone, revealing the influence law and instability mechanism of ship swells on the rock mass of the reservoir bank drawdown zone during ship navigation, filling the gap in the research on the dynamic mechanism of ship swell erosion.

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Abstract

The application provides a device and method for testing deterioration of reservoir bank drawdown zone rock mass under the action of ship surge, which comprises a model box, a bank slope model, a deterioration zone formed by similar materials, and a ship model. The bank slope model has a valley in the middle and slope surfaces on both sides. The ship model comprises a sliding plate, an electric roller support, a motor, a transmission shaft, a first gear assembly, a second gear assembly and a turbine. The sliding plate is slidably connected to the model box. The electric roller support is installed on the sliding plate and can move along the sliding plate. The electric roller support moves along the sliding plate to drive the turbine to move sideways on the slope surface. The sliding plate slides along both ends of the model box to change the distance between the turbine and the slope surface. The application has the beneficial effect of simulating the driving of a ship in a reservoir to cause the surge and the erosion of the slope surface of the bank slope model by the surge. The fatigue test of the drawdown zone rock mass under the action of the ship surge can be carried out, and the deterioration law and instability mechanism of the drawdown zone rock mass under the action of the ship surge can be analyzed.
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