A method for calculating the maximum motion distance of ice collapse and application thereof

Abstract

The invention discloses a method for calculating the maximum motion distance of ice collapse and application thereof. The method comprises the following steps: b, surveying and mapping to determine basic data of a potential ice collapse body; c, determining a main parameter elevation difference H of the maximum motion distance of ice collapse; d, starting from the foremost end of the ice collapsebody, determining the motion track of the ice collapse body during ice collapse; e, determining a plurality of measuring and calculating points along the ice collapse motion track line, and measuringthe H / L value of each measuring and calculating point; and when the motion track reaches the ice lake, the river and the reverse hillside, a measurement point is still set according to the motion track; and f, comparing the H / L values of all the calculation points, when the value of the calculation point is equal to the minimum H / L value calculated by the formula 4, determining the position of thecalculation point as the foremost edge position of ice collapse accumulation, determining the movement level distance L as the maximum movement distance of ice collapse, and determining the maximum danger range of ice collapse according to the position. According to the method, the maximum movement distance of ice collapse is accurately calculated in a quantitative mode, and the disaster prevention applicability is greatly improved.

Description

technical field [0001] The invention relates to the technical field of disaster prevention and control engineering in alpine mountainous areas, in particular to a method for calculating the maximum movement distance of an ice avalanche and an application thereof. Background technique [0002] Ice avalanche is a natural phenomenon that occurs in alpine mountains. After the ice avalanche occurs, the ice moves down the hillside or on the roadside, silts and impacts nearby residential buildings, high-voltage power lines and towers and other construction facilities or roads, causing great damage. The ice blocks produced by the ice avalanche may also rush into the glacial lake at the foot of the mountain, forming a huge surge, raising the water level of the glacial lake, triggering the collapse of the glacial lake, forming a debris flow of the glacial lake collapse, and then rushing into the downstream river, blocking the river, and then collapsing. Form a secondary disaster chai...

AI Technical Summary

Problems solved by technology

[0007] In these studies, there is no more detailed study on the maximum movement distance of ice avalanches, which is the basis for judging the maximum dangerous range of ice avalanches

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