Ice Avalanche Surge Simulation Device for Glacial Lake Outburst Measurement
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Solution Overview
Problem
Existing devices have not intensively studied the formation, evolution, and attenuation of surges under ice avalanche conditions and the dam breaching process, particularly due to the unique buoyancy effects of ice avalanches in glacial lakes, which differ from conventional landslides, posing a risk to downstream areas.
Innovation Solution
An ice avalanche-type glacial lake outburst surge generation and height measurement device is developed, simulating topographic changes, ice avalanche landslides, and controlling the impact parameters like speed and angle using a low-density slider, pulley systems, and motors to accurately replicate the ice avalanche process and measure surge heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional landslide simulation methods are used, then the simulation structure is simple, but they cannot accurately simulate ice avalanche characteristics (low density, buoyancy effects)
Solution Approach 1:
The patent uses a slider to copy the essential characteristics of ice avalanches (low density, buoyancy effects) rather than simulating actual ice. The slider is designed with density less than water and equipped with buoyancy simulation mechanisms, allowing it to replicate the floating and impacting behavior of real ice avalanches without requiring actual ice materials.
Solution Approach 2:
The patent changes the density parameter of the simulation object by using a slider with density less than water, fundamentally different from conventional landslide simulators that use dense materials. This parameter change enables the simulation of buoyancy effects and floating behavior characteristic of ice avalanches, resolving the contradiction between simulation accuracy and device complexity.
2Manufacturing precision
If ice avalanche sliders are released without control, then the simulation is simple, but the impact speed and timing cannot be precisely controlled
Solution Approach 1:
The patent positions the ice avalanche slider at a predetermined location upstream before release, allowing precise control of the distance and time to impact. The slider is held in place by a release mechanism that triggers at a specific moment, ensuring accurate impact timing and speed without requiring complex real-time control during motion.
Solution Approach 2:
The patent employs a dynamic release mechanism that can be triggered at precise moments to initiate slider motion. The mechanism allows the slider to be held stationary until release, then moves freely under gravity and buoyancy forces, providing both precise timing control and natural acceleration to achieve target impact speeds.
3Loss of information
If surge height measurement is not integrated, then the device structure is simple, but the data collection for hazard assessment is insufficient
Solution Approach 1:
The patent integrates multiple functions into the measurement system: the same sensor array that detects slider impact also measures surge height, wave propagation, and water level changes. This multi-functional approach reduces overall device complexity while comprehensively capturing hazard assessment data, as one measurement system serves multiple research purposes.
Solution Approach 2:
The patent introduces measurement sensors as intermediary elements between the ice avalanche impact and the data recording system. These sensors indirectly measure surge characteristics by detecting physical changes (water level, pressure, motion) caused by the impact, converting complex hydrodynamic phenomena into measurable signals without requiring direct intervention in the surge process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This device accurately simulates the formation, evolution, and attenuation of ice avalanche surges, providing a theoretical basis for engineering transformations of glacial lakes, reducing downstream risks and property losses from moraine lake outbursts by simulating real ice avalanche impacts and dam breaching mechanisms.
Implementation Method 1
the density of ice avalanche landslides is generally less than that of glacial lake water. When impacting the glacial lake, the ice avalanche landslide will float under the action of buoyancy
Data Source
AI summary
Provided is an ice avalanche-type glacial lake outburst surge generation and height measurement device. A glacial lake outburst test device includes a glacial lake simulation module and an ice avalanche surge module. An impact path, an impact angle, an impact scale, an impact velocity and a landslide density of an ice avalanche slider are controlled by simulation means. During formation of ice avalanche surges, the ice avalanche slider rushes into the glacial lake at a high speed, an ice avalanche pushes water to move in a sliding direction, thus forming a first surge, then continues to move to the bottom of the lake under the inertia and discharges a certain amount of water at its back. Movement of the landslide drives surrounding water to converge quickly into the back area, thus forming a second surge. Surge waves evolve around with a water entry point as a center.