Experimental device and experimental method for simulating the formation and collapse of a dam dam

Abstract

The invention provides an experimental device and an experimental method for simulating the formation of a barrier dam to its failure. The device includes a water storage tank, a water measuring weir for injecting water into the water storage tank and measuring the flow rate upstream of the water storage tank, a main tank connected to the outlet of the water storage tank, a branch ditch laterally intersecting the main tank, and a bracket . Among them, the slope of the main groove, the slope of the branch groove, and the height of the connecting plate are adjustable, the width of the fluid channel of the main groove is adjustable, the flow rate and the height of the water surface are adjustable, so that it can more accurately simulate the conditions of different main grooves and branch grooves, and different The process of landslides blocking rivers and forming barrier dams under the source level of tributary landslides, as well as the evolution process of outburst floods, are conducive to more comprehensive acquisition of the evolution law of the disaster chain of barrier dams, the formation characteristics and the data of the water supply characteristics of the outage. Improve the scientificity and accuracy of the research on the formation process of the barrier dam and the failure mechanism of the barrier dam.

Description

technical field [0001] The invention belongs to the field of mechanical model experiment facilities, and in particular relates to a test device for simulating the formation of a dam to its failure in the study of dam failure. Background technique [0002] The terrain in southwestern China is dominated by plateaus and mountains, and there are many rivers running through the valleys, showing great surface cuts and undulations, resulting in frequent occurrence of geological disasters in this area. Under the action of natural disasters such as earthquakes or heavy rains, natural disasters such as landslides and debris flows often occur, and the slope of the river bank is easily affected and becomes unstable, causing a large-scale soil-rock mixture to slide into the river, and then form a dam to block the river. If the barrier dam does not break for a while, the river water will form a barrier lake behind the dam. The barrier dam blocks the river, and the river cannot be dischar...

AI Technical Summary

Problems solved by technology

These may cause the permeability of the model earth dam and the local dam height, which have a greater impact on the failure of the barrier dam, to be different from the actual situation, so that the test cannot accurately simulate the real situation, resulting in test deviations

Moreover, the landforms and river flow regimes of the barrier dams currently formed in various parts of my country are different. Few of the existing model experiments can flexibly meet various experiments, cannot truly simulate the actual river conditions, and are difficult to build. Higher cost

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