A landslide surge model test device and landslide surge test method

Abstract

The invention discloses a landslide surge model test device and a landslide surge test method. The model test device includes a transparent model box and a transparent water tank. A landslide model is arranged in the transparent model box. The landslide model consists of bedrock and iron-containing The landslide body is composed of an electromagnet at the foot of the bedrock slope, and the electromagnet is fixedly connected with the bedrock and the transparent model box; the transparent water tank is connected with the side of the landslide slope foot in the transparent model box, and several vertical scales are arranged in the transparent water tank , used to show the change in water surface height during swell. Utilizing the gravitational force of the electromagnet on the iron powder in the landslide body, and controlling the water entry speed of the landslide by controlling the current of the electromagnet, the test of landslide surge propagation under different water entry speeds of the landslide body with a constant inclination angle can be realized; The landslide body piled up with materials can more truly reflect the sliding process of the landslide body and the impact of the disintegration after entering the water on the water entry velocity and the generated surge height.

Description

technical field [0001] The invention relates to a landslide surge model test device and a landslide surge test method, belonging to the technical field of geological disaster model tests. Background technique [0002] The deep-cut canyons in southwest my country are widely distributed and rich in hydropower resources. With the construction of a series of large-scale hydropower stations, many high dams and large reservoirs have been formed. There are large-scale accumulation landslides in the area near the dams. If these landslides become unstable, surge problems are likely to occur , seriously threaten the safe operation of high dams and large reservoirs. For example, in 1963, the landslide surge near the dam on the left bank of the Vajont Reservoir in Italy caused nearly 2,000 casualties. One of the issues that must be considered in dam construction. [0003] At present, the main means of studying landslide surge mainly include numerical calculation method, empirical formula...

AI Technical Summary

Problems solved by technology

However, there are few physical model test devices and testing methods for studying landslide surges, and there are serious shortcomings in the following aspects: First, when studying landslide surges, integral blocks are often used instead of discrete landslide bodies, which cannot truly reflect landslide bodies. The impact of the sliding process and disintegration after entering the water on the water entry velocity and the resulting surge height; the second is that in the existing research on the surge damage caused by different landslide entry velocity, the landslide entry velocity is usually changed by changing the inclination angle of the landslide block. The landslide water entry speed range is limited, and more importantly, it does not conform to the fact that the inclination angle is the only and constant in the actual landslide

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