Early-stage identification method of ice-water debris flow and application of early-stage identification method

An early identification and debris flow technology, applied to instruments, alarms, etc., can solve the problems of inability to effectively evaluate, prevent and warn of ice, cement and rock flows, in-depth research on terrain conditions, and inability to identify and correctly judge ice, cement and rock flows, etc., to achieve early identification The effect of reasonable judgment, accurate early recognition and judgment, and strong applicability

Active Publication Date: 2019-03-08
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The method for grading and assessing the risk of debris flow hazards in the glacier distribution area disclosed in this patent document is only based on the traditional assessment method for the risk of debris flow in general areas, and the impact factors of glaciers are added to carry out

Method used

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  • Early-stage identification method of ice-water debris flow and application of early-stage identification method
  • Early-stage identification method of ice-water debris flow and application of early-stage identification method

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Experimental program
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Embodiment 1

[0029] The early identification method of ice and cement flow includes the following steps:

[0030] a. Through Google Earth or on-site measurement, determine the basic topographic data of ice and cement flow: the slope of the ditch bed in the formation area above the accumulation area below the glacier and snow accumulation area;

[0031] b. Measure the slope α of the gully bed of the glacier and the formation area below the snow accumulation area and above the snow accumulation area at different slope sections, and measure the channel slope with the channel length ≥ 10m as the standard;

[0032] c. Early identification of ice, cement and rock flows at different slopes through the slope α of the gully bed above the accumulation area below the glacier and snow-covered area:

[0033] When 14°<α<30°, it is identified as ice cement flow;

[0034] When α≤14° or α≥30°, it is identified as non-ice cement flow;

[0035]d. According to the early identification of ice cement rock flo...

Embodiment 2

[0038] The early identification method of ice and cement flow includes the following steps:

[0039] a. Through Google Earth or on-site measurement, determine the basic topographic data of ice and cement flow: the slope of the ditch bed in the formation area above the accumulation area below the glacier and snow accumulation area;

[0040] b. Measure the slope α of the gully bed of the glacier and the formation area below the snow accumulation area and above the snow accumulation area at different slope sections, and measure the channel slope with the channel length ≥ 10m as the standard;

[0041] c. Use the slope α of the gully bed above the accumulation area below the glacier and snow-covered area to identify the ice-cement rock flow at different slopes at an early stage:

[0042] When 14°<α<30°, it is identified as ice cement flow;

[0043] When α≤14° or α≥30°, it is identified as non-ice cement flow;

[0044] d. According to the early identification of ice cement rock fl...

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Abstract

The invention discloses an early recognition method for ice-water debris flow, and belongs to the technical field of debris flow prevention and control engineering, the method comprises the followingsteps: a, determining gully bed gradients alpha of a formation area above an accumulation area and below a glacier and a snow accumulation area; b, respectively measuring the gully bed gradients alphaof different gradient sections, and taking a channel length larger than or equal to 10m as a standard to measure a channel gradient; c, carrying out early recognition on the ice-water debris flow ofdifferent gradient sections through the gully bed gradients alpha; d, according to the early recognition on the ice-water debris flow of different gradient sections, when gully bed gradients alpha aregreater than 14 degrees and smaller than 30 degrees, judging the region is an ice water flow drainage basin, and when all the gully bed gradients alpha are larger than or equal to 30 degrees or lessthan or equal to 14 degrees, judging the region is a non-ice-water-flow drainage basin. According to the method, the early recognition of the ice-water debris flow can be judged correctly, so that theice-water debris flow can be effectively evaluated, the corresponding prevention and early warning can be made, and the ice-water debris flow disaster can be reduced.

Description

technical field [0001] The invention relates to the technical field of mud-rock flow prevention and control engineering, in particular to an early identification method for ice cement mud-rock flow and its application. Background technique [0002] Ice and cement flow is a natural phenomenon that occurs in the distribution area of ​​alpine ice and snow. After the ice cement rock flow occurs, the debris flow moves to the downstream accumulation fan, destroying towns, destroying farmland and forests, destroying bridges and roads, and blocking traffic. Ice and cement flows often occur due to the rise of local temperature, the melting of ice and snow to form channel runoff, start the solid source in the channel, and form ice and cement flows. Two conditions are required for the formation of ice and cement flows. One is the terrain conditions that are conducive to the occurrence of ice and cement flows; the other is certain temperature conditions that cause ice and snow to melt ...

Claims

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Application Information

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IPC IPC(8): G08B21/10G08B31/00
CPCG08B21/10G08B31/00
Inventor 余斌范冬捷冯文凯裴向军
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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