Novel debris flow provenance dam break experiment water tank device and realization method thereof

Abstract

The invention discloses a novel debris flow provenance dam break experiment water tank device and a realization method thereof. The novel debris flow provenance dam break experiment water tank device comprises a support, a stilling basin, a water tank, an overflow device, a water supply device and a waste pool, wherein the stilling basin and the water tank are sequentially fixed on the support and are in end-to-end connection; the overflow device is arranged in the stilling basin; the water supply device is arranged under the support and is used for providing water to the stilling basin; and the waste pool is arranged at an outlet of the water tank and is used for receiving muddy water. The overflow device divides the inner space of the stilling basin into a processing region and an overflow region, wherein the processing region is internally provided with a lattice wall for adjusting the water flow state. The overflow device comprises a vertical steel plate vertically welded to the bottom portion of the stilling basin and an arc-shaped steel plate welded tangently with the vertical steel plate. The water supply device comprises a water box for providing a water source, a water pump for pumping water and a flexible pipe for conveying the water flow. The conformity of the water flow state in the experiment process and the real state is improved, and smooth implement of the experiment and accuracy of hydraulics parameters are ensured.

Description

technical field [0001] The invention relates to an experimental model facility of mountain disaster dynamics, in particular to a novel flume device for a dam break experiment of a debris flow source and a realization method thereof. Background technique [0002] Dam breaks and mudslides are major natural disasters, which seriously affect the economic development of mountainous areas and threaten people's lives and property safety. At the same time, they also seriously threaten the sustainable development of society. Therefore, the country pays great attention to and attaches great importance to the research on mountain disasters. [0003] Under laboratory conditions, the simulation of dam failure and debris flow problems is usually carried out in a water tank. The water tank and the water tank are separated by a gate. The middle of the tank is simulated by a pile of sediment to simulate the dam body, and the water supply is controlled through the gate. However, when the gat...

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Problems solved by technology

However, when the gate is opened, the water level in the water tank is high, the water velocity is high, and the flow rate is also large. As the water level in the water tank decreases, the water velocity and flow rate gradually decrease, resulting in a discrepancy between the experimental conditions and the real situation; and , the gate cannot completely stop the water. During the water storage process of the water tank, it is inevitable that the gate will seep and mix with the materials in the tank, which will cause the initial parameter change of the material, thus affecting the experimental results; manual opening of the gate will make the experiment repeatability poor and the error Larger size is not conducive to the smooth and fast progress of the experiment

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