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Early identification method for burst of ice lake without ice core in moraine dyke

An early identification and ice core technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of easy misjudgment, lack of clear definition of ice lakes, lack of early identification of moraine lakes, etc. Improve the accuracy of judgment, early identification and simple effect of judgment

Active Publication Date: 2018-10-19
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them fully considered the relationship between the glacier and the glacier lake and the characteristics of the moraine embankment, especially the relationship between the potential glacier volume and the volume of the glacier lake, the proportional relationship between the area of ​​the glacier lake and the width and length of the moraine embankment, and the backwater of the moraine embankment. Therefore, there is still a big gap in the early identification of moraine lakes.
And there is no clear definition of what kind of ice lake is the ice lake, so in the judgment of different types of ice lake, it is very easy to misjudgment

Method used

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  • Early identification method for burst of ice lake without ice core in moraine dyke
  • Early identification method for burst of ice lake without ice core in moraine dyke
  • Early identification method for burst of ice lake without ice core in moraine dyke

Examples

Experimental program
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Effect test

Embodiment 1

[0064] A method for early identification of moraine dike glacier lake outburst without ice core, comprising the following steps:

[0065] a. Determine the moraine lake without ice core in the moraine embankment;

[0066] Distinguished by Google Earth images, if the surface is smooth and has layered curved ridge moraine banks, it is a moraine lake with an ice core; if there is a disproportionately large moraine bank in front of a small glacier, it is an ice core moraine lake with a core; if there is a narrow spire or a triangular moraine embankment in cross-section, it is a moraine lake without an ice core;

[0067] b. Determination of basic parameters of moraine lakes without ice cores by Google Earth;

[0068] Including the ice tongue slope α at the back edge of the glacier lake, the slope aspect θ of the mother glacier, the area F of the mother glacier, and the area A of the ice tongue S , the vertical height difference between the centroid of the glacier tongue and the gl...

Embodiment 2

[0093] A method for early identification of moraine dike glacier lake outburst without ice core, comprising the following steps:

[0094] a. Determine the moraine lake without ice core in the moraine embankment;

[0095] Distinguished by Google Earth images, if the surface is smooth and has layered curved ridge moraine banks, it is a moraine lake with an ice core; if there is a disproportionately large moraine bank in front of a small glacier, it is an ice core moraine lake with a core; if there is a narrow spire or a triangular moraine embankment in cross-section, it is a moraine lake without an ice core;

[0096] b. Determination of basic parameters of moraine lakes without ice cores by Google Earth;

[0097] Including the ice tongue slope α at the back edge of the glacier lake, the slope aspect θ of the mother glacier, the area F of the mother glacier, and the area A of the ice tongue S , the vertical height difference between the centroid of the glacier tongue and the gl...

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Abstract

The invention discloses an early identification method for burst of an ice lake without ice core in a moraine dyke, which is characterized in that the method comprises the following steps: a, judgingwhether a moraine lake without ice core exists in a moraine dyke; b, determining the basic parameters of the moraine lake without ice core through Google Earth; c, calculating a comprehensive discrimination factor T for early identification of the moraine lake without ice core; and d. judging the risk of the moraine lake without ice core according to the comprehensive discrimination factor T for early identification of the moraine lake without ice core. The invention studies the burst mechanism of the moraine lake without ice core in the moraine dyke by analyzing various influence factors, makes comprehensive judgment, establishes an early identification calculation model for burst of the moraine lake without ice core, accurately identifies the dangerous moraine lake without ice core in early stage in a quantitative manner, and greatly improves the accuracy of judgment.

Description

technical field [0001] The invention relates to the technical field of debris flow prevention and control engineering, in particular to an early identification method for the outburst of moraine dikes and ice lakes without ice cores. 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: one is the terrain conditions that are conducive to the occurrence of ice and cement flow; the other is certain temperature conditions that lead to the m...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 余斌范冬捷常鸣
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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