Control device of slope tide level under super gravity

Abstract

The invention discloses a control device of the slope tide level under super gravity. A water storage chamber is arranged at the bottom of a model case, the upper portion is partitioned into left and right level adjusting chambers and a middle model chamber, the middle chamber is provided with a tested soil layer, two peristaltic pumps extends to the bottoms of the level adjusting chambers through centrifuge rotating joints respectively, hole pressure sensors are fixed to the bottoms of the level adjusting chambers, an exhaust pipe and a water drainage pipe of the left level adjusting chamber is communicated with the water storage chamber, the side of the water drainage pipe is provided with a straight groove, and a piston is installed in the water drainage pipe and matches with the exhaust pipe in a sliding manner; one end of an electrical cylinder is connected to the top of the piston, and the other end is fixed to the upper portion of the model case. The device is adaptive to centrifuge slope internal level control and external tide level control, the level information is fed back in real time for controlling, the level control accuracy is high, the continuous control of the centrifuge slope tide level and fluctuation rate is implemented, the actual hydraulic condition is restored, and the device is simple in entire structure and easy to install.

Description

technical field [0001] The invention relates to a side slope water level control device, in particular to a side slope tidal water level control device under supergravity conditions. Background technique [0002] Hydraulically induced slope instability is an important issue in slope stability analysis. The centrifuge can restore the original stress-strain field and is suitable for analyzing soil deformation stability. When the water level in the soil rises, the effective stress of the soil will decrease, and when there is seepage in the soil, the seepage force will further increase the possibility of soil instability. The external ebb and flow of the slope has a great influence on the deformation stability of the soil, and the ebb and flow cycle will cause tension cracks in the slope, which in turn will lead to traction landslides on the slope. Realizing the controllability of the water level inside and outside the soil slope is of great significance to the analysis of the ...

AI Technical Summary

Problems solved by technology

Water supply at a constant water supply rate often causes the applied water level to exceed the design value; when maintaining a stable water level, it is also difficult to accurately make up for the drop in water level caused by the water in the water supply tank seeping into the soil, so the method of flow control is used in the application of water level and maintenance. Insufficient accuracy at water level

During the external drainage process of the slope, the change of water head will lead to the change of drainage rate, and the existing flow control method is difficult to realize the simulation of the rate of water level drop

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