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

A technology of movement distance and calculation method, which is applied in the direction of calculation, special data processing application, design optimization/simulation, etc., to achieve the effect of improving the applicability of disaster prevention

Active Publication Date: 2019-04-30
国网西藏电力有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The calculation method of the maximum movement distance of a kind of ice avalanche of the present invention comprises the following steps:

[0052] a. According to the position of the potential ice avalanche body to be analyzed, combined with geographical knowledge, judge whether the attribute of the glacier in danger of ice avalanche is continental glacier, marine glacier or hanging glacier;

[0053] Glaciers with dry climate, low snowfall, low negative temperature and high snow line, low income and expenditure, weak activity, generally short ice tongue, and weak glacial geological and geomorphic effects belong to continental glaciers. Glaciers, on the contrary, belong to marine glaciers; glaciers hanging on the mountain slopes do not descend to the foothills, and the glaciers are small in scale and thin in ice thickness, and the area of ​​glaciers is usually less than 1km 2 The glaciers are hanging glaciers.

[0054] b. Surveying and mapping to determine the basic da...

Embodiment 2

[0083] This embodiment is based on Embodiment 1 to further illustrate the present invention.

[0084] A method for calculating the maximum moving distance of an ice avalanche in the present invention further includes a step g after step f: when the H / L value of more than 2 measurement points is equal to the minimum H / L value calculated by formula 4, the most upstream The calculation point at the end (that is, the position closest to the ice avalanche body) is the final ice avalanche accumulation point.

Embodiment 3

[0086] This embodiment is based on Embodiment 1 to further illustrate the present invention.

[0087] A method for calculating the maximum movement distance of an ice avalanche in the present invention also includes a step g' after step f: when the distance between the measurement points is relatively large, the H / L values ​​of two adjacent measurement points from top to bottom are respectively When it is greater than the minimum H / L value calculated by formula 4 and less than the minimum H / L value calculated by formula 4, the calculation points are encrypted between these two calculation points until the minimum H / L value equal to the calculation of formula 4 is obtained. up to the calculation point.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50E02B3/00
CPCE02B3/00G06F30/20
Inventor 陈钢余斌范东捷李为乐习学农周军张亚迪卢忠东游川都亮丛鹏包维雄刘振涛姚洪林王赞马奔田旭鹏曹科程晓岩吴元香
Owner 国网西藏电力有限公司
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