Experimental water channel device for simulating instantaneous and complete break of dam

Abstract

The invention discloses an experimental water channel device for simulating instantaneous and complete break of a dam. The experimental water channel device for simulating instantaneous and complete break of the dam comprises a water channel, a baffle and a buoyancy twisting device. A support is arranged in the water channel, the baffle is fixed at the bottom of the water channel through a hinge device, the buoyancy twisting device is arranged on the support and comprises bearings, bolts, floating rods and floating balls, the buoyancy twisting device is fixed on the upper portion of the support in the water channel through the bearings, each floating rod and each bearing are fixed together, one end of each floating rod is connected to each bolt through each bearing, and the other end of each floating rod is connected to each floating ball. In the initial phase, the floating balls are vertically downward, and the baffle is perpendicularly fixed in the water channel. When the water level in front of the dam rises, the floating balls rise in a floating mode, twist the floating rods so as to twist the bolts, when the water level rises to a certain degree, the bolts are twisted to exceed the boundary of the baffle, and the baffle is instantaneously pressed down due to pressure of a water body in front of the dam. The experimental water channel device for simulating instantaneous and complete break of the dam avoids errors caused by human factors to experiment engineering, and improves accuracy and repeatability of an instantaneously complete dam break experiment.

Description

technical field [0001] The invention belongs to hydraulic experiment model facilities, in particular to an experimental water tank device used for simulating all dam breaks instantaneously in the problem of dam breaks. Background technique [0002] According to the form of dam failure, the problem of dam failure can be divided into three categories: instantaneous total failure, instantaneous partial failure and gradual failure. In general, arch dams and canyon dams in rigid dams tend to collapse instantaneously, most of the remaining rigid dams still collapse instantaneously and partially, and the collapse form of earth-rock dams is gradual collapse. Under laboratory conditions, simulations of dam failures are usually performed in tanks. For the research on instantaneous total collapse, most of the previous dam failure model tests used baffles to simulate rigid dams; the baffles were quickly lifted up or dropped down to simulate the situation of instantaneous total collapse...

AI Technical Summary

Problems solved by technology

Manually opening the baffle in the model will result in poor repeatability of the experiment and large errors; especially when it comes to experimental research on the cascade failure of cascade dams, the accuracy is worse, more labor is required, and the operation is more confusing , causing obstacles to the smooth and fast implementation of the experiment

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