Experimental device and experimental method for simulating whole process of moraine lake overtopping burst disasters

Abstract

The invention provides an experimental device and an experimental method for simulating the whole process of moraine lake overtopping burst disasters. The experimental device is provided with a six-in-two system for realizing the synchronous measurement of kinetic parameters, environmental noise vibration signals and imaging parameters in the full life and whole process of triggering, propagation, overtopping, disaster formation and evolution of ice collapse surges in ice lake burst. The experimental device comprises a water supply device, a surge triggerring device, an energy dissipation device, a buffer device, an experimental water tank main body device, a collection device, a synchronous measurement system and a monitoring system. According to the experimental device, the whole process of ice collapse-surge-overtopping-disaster formation can be simulated, the erosion characteristics of a moraine dam in the outburst process can be observed and researched, important parameters such as dynamics and environmental noise in the movement process of debris flow formed by outburst flood can be monitored, and the knowledge gap of the dynamic mechanism of the erosion process of moraine dam in the current study of ice lake burst flood is mainly filled.

Description

technical field [0001] The invention belongs to the fields of railway and road construction route selection, disaster prevention and mitigation of major projects, and early warning of debris flow disasters, and specifically relates to an experimental device and an experimental method for simulating the entire process of a moraine lake overflow disaster. Background technique [0002] Glaciers are indicators of climate change and are important solid reservoirs of freshwater resources. Modern glaciers are found in almost all latitudes around the world. The glaciers on the earth cover about 29 million square kilometers, covering 11% of the continent. Ice lake is the abbreviation of glacial lake, which is formed by glacier action. Ice lake outburst is one of the common disaster types in high mountainous areas. Outbreak flood is characterized by suddenness, extensive impact and serious harm. Life safety and damage to infrastructure have aroused widespread concern. When glacial l...

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide an experimental device and an experimental method for simulating the whole process of the glacial lake outburst disaster, focusing on solving the lack of understanding of the formation of glacial lake outburst flood in the current research on the dynamic mechanism of glacial lake outburst. Simultaneous monitoring of the important dynamic parameters and environmental noise and vibration signals in the debris flow, and the lack of measurement and calculation of the internal seepage field and external deformation field during the collapse of the model dam body; it also solves the problem of traditional indoor model tanks focusing on a certain disaster The monitored experimental parameters cannot reflect the disadvantages of the entire disaster chain

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