Hazard assessment method of ice-water-debris flow and its application

A debris flow and risk technology, applied in data processing applications, material inspection products, instruments, etc., can solve problems such as the risk of hard-ice cement debris flow, in-depth research on unrecognized topographic conditions, etc., to achieve reasonable risk judgment, simple division method, Easy to execute effects

Active Publication Date: 2019-03-15
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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 the risk grading of debris flow. It is difficult to make an accurate judgment on the danger of ice and cement flow through in-depth research on the internal mechanism of terrain conditions

Method used

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  • Hazard assessment method of ice-water-debris flow and its application
  • Hazard assessment method of ice-water-debris flow and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The method for judging the danger of ice and cement flow includes the following steps:

[0034] a. Through Google Earth or on-site measurement, determine the basic topographical data of ice and cement flow: the area of ​​glaciers and snow-covered areas A0, the slope of the ditch bed slope α and the width W of the ditch bed above the accumulation area below the glacier and snow-covered area;

[0035] b. Measure the slope α and width W of the gully bed in the glacier and the formation area below the snow accumulation area and above the snow accumulation area in different slope sections, and measure the gully slope with the gully length ≥ 10m as the standard;

[0036]c. From the relative area of ​​glacier and snow area A=A0 / W 2 And the slope α of the gully bed above the accumulation area below the glacier and snow-covered area divides the danger levels of ice cement flow in different slope sections from high to low:

[0037] When A>500 and 14°<α<21°, the danger of ice cem...

Embodiment 2

[0044] The method for judging the risk of ice and cement rock flow includes the following steps:

[0045] a. Through Google Earth or on-site measurement, determine the basic topographical data of ice and cement flow: the area of ​​glaciers and snow-covered areas A0, the slope of the ditch bed slope α and the width W of the ditch bed above the accumulation area below the glacier and snow-covered area;

[0046] b. Measure the slope α and width W of the gully bed in the glacier and the formation area below the snow accumulation area and above the snow accumulation area in different slope sections, and measure the gully slope with the gully length ≥ 10m as the standard;

[0047] c. From the relative area of ​​glacier and snow area A=A0 / W 2 And the slope α of the gully bed above the accumulation area below the glacier and snow-covered area divides the danger levels of ice cement flow in different slope sections from high to low:

[0048] When A>500 and 14°<α<21°, the danger of ice...

Embodiment 3

[0057] The method for judging the risk of ice and cement rock flow includes the following steps:

[0058] a. Through Google Earth or on-site measurement, determine the basic topographical data of ice and cement flow: the area of ​​glaciers and snow-covered areas A0, the slope of the ditch bed slope α and the width W of the ditch bed above the accumulation area below the glacier and snow-covered area;

[0059] b. Measure the slope α and width W of the gully bed in the glacier and the formation area below the snow accumulation area and above the snow accumulation area in different slope sections, and measure the gully slope with the gully length ≥ 10m as the standard;

[0060] c. From the relative area of ​​glacier and snow area A=A0 / W 2 And the slope α of the gully bed above the accumulation area below the glacier and snow-covered area divides the danger levels of ice cement flow in different slope sections from high to low:

[0061] When A>500 and 14°<α<21°, the danger of ice...

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Abstract

The invention discloses a method for judging the danger of ice-water-debris flow, belonging to the technical field of debris flow prevention and control engineering, which is characterized in that themethod comprises the following steps: a, determining the area A0 of glacier and snow-covered area, the slope alpha of gully bed and the width W of gully bed in the forming area above the accumulationarea below the glacier and snow-covered area; B, respectively measuring the gully bed gradient alpha and the gully bed width W of different gradient segments, and taking the gully length >= 10 m as the standard to measure the gully bed gradient; (c) divide that risk grade of ice-water-debris flow in different gradient sections from high to low accord to the relative area of glacier and snow-covered area A=A0/W2 and the gradient of gully bed alpha; D, subject to the judgment result of the highest risk grade. The invention conducts in-depth research on the inherent mechanism of the topographicconditions leading to the formation of the ice-water debris flow, establishes the ice-water debris flow hazard judgment model, determines the hazard classification level of the ice-water debris flow,and can accurately make judgment on the hazard of the ice-water debris flow.

Description

technical field [0001] The invention relates to the technical field of mud-rock flow prevention and control engineering, in particular to a method for judging the risk of 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. [0003] 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. The formation of ice and cement flow requires two conditions: 1. The topographical conditions are conducive to the occurrence of ice and cement flow; 2. Certain temperature conditions lead to the melting of ice and snow and eventual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26G01N33/24
CPCG06Q10/0635G06Q50/265G01N33/24
Inventor 余斌范冬捷裴向军冯文凯
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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