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A method for judging the risk of rock landslides and its application

A technology based on risk and rock quality, which is applied in the field of risk judgment of rock landslides, can solve problems such as reduced accuracy of landslide early warning, lack of quantitative topographic factor calculation methods, and unsuitable for rock landslide risk judgment, achieving reduction Landslide hazards, improving the effect of landslide early warning, and the effect of strong applicability

Inactive Publication Date: 2018-03-30
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The multi-level comprehensive monitoring and early warning method for landslide disasters disclosed in this patent document requires a large amount of historical record monitoring data of landslides, and then calculates the critical threshold of landslide monitoring and early warning through landslide deformation and failure model tests; and then determines whether the study area has For the possibility of landslides, although there are many landslide factors analyzed, there is little analysis of topographic factors, another important factor affecting landslides, and there is no quantitative calculation method for topographic factors, which reduces the accuracy of the entire landslide early warning, especially not suitable for red Hazard Judgment of Rock Landslides in Layer Areas

Method used

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  • A method for judging the risk of rock landslides and its application
  • A method for judging the risk of rock landslides and its application
  • A method for judging the risk of rock landslides and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see Figure 1-Figure 3 , a method for judging the risk of rock landslides, comprising the following steps:

[0036] a. Determine the basic topographical data of the landslide through on-site investigation and mapping: the slope of the landslide α, the area of ​​the landslide A, and the area of ​​the upper side of the landslide A u, the slope of the upper side of the landslide body β, the area of ​​the left side of the landslide body A L , the topographic undulation slope on the left side of the landslide body θ 1 , the area A of the right side of the landslide body R , the terrain undulation slope on the right side of the landslide body θ 2 ;

[0037] b. Calculate the upper steep terrain factor U through formula 1, and calculate the comprehensive factor C on both sides through formula 2;

[0038]

[0039]

[0040] c. Calculate the terrain comprehensive discriminant factor T by formula 3;

[0041] T=tan(α)+1.5U+0.5C (Formula 3)

[0042] D, the landslide comp...

Embodiment 2

[0045] see Figure 1-Figure 3 , a method for judging the risk of rock landslides, comprising the following steps:

[0046] a. Determine the basic topographical data of the landslide through on-site investigation and mapping: the slope of the landslide α, the area of ​​the landslide A, and the area of ​​the upper side of the landslide A u , the slope of the upper side of the landslide body β, the area of ​​the left side of the landslide body A L , the topographic undulation slope on the left side of the landslide body θ 1 , the area A of the right side of the landslide body R , the terrain undulation slope on the right side of the landslide body θ 2 ;

[0047] b. Calculate the upper steep terrain factor U through formula 1, and calculate the comprehensive factor C on both sides through formula 2;

[0048]

[0049]

[0050] c. Calculate the terrain comprehensive discriminant factor T by formula 3;

[0051] T=tan(α)+1.5U+0.5C (Formula 3)

[0052] D, the landslide com...

Embodiment 3

[0056] see Figure 1-Figure 3 , a method for judging the risk of rock landslides, comprising the following steps:

[0057] a. Determine the basic topographical data of the landslide through on-site investigation and mapping: the slope of the landslide α, the area of ​​the landslide A, and the area of ​​the upper side of the landslide A u , the slope of the upper side of the landslide body β, the area of ​​the left side of the landslide body A L , the topographic undulation slope on the left side of the landslide body θ 1 , the area A of the right side of the landslide body R , the terrain undulation slope on the right side of the landslide body θ 2 ;

[0058] b. Calculate the upper steep terrain factor U through formula 1, and calculate the comprehensive factor C on both sides through formula 2;

[0059]

[0060]

[0061] c. Calculate the terrain comprehensive discriminant factor T by formula 3;

[0062] T=tan(α)+1.5U+0.5C (Formula 3)

[0063] D, the landslide com...

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Abstract

The invention discloses a risk judgment method for a rock landslide and the application of the risk judgment method and belongs to the technical field of landside control projects. The risk judgment method for the rock landslide is characterized by comprising the following steps that a, basic topographic data of a landslide mass are determined through field investigation and mapping, and the basic topographic data include the landslide mass gradient alpha, the landslide mass area A, the landside mass upper side face area Au, the landside mass upper side face gradient beta, the landslide mass left side face area AL, the landslide mass left side face topographic undulating gradient theta1, the landslide mass right side face area AR and the landslide mass right side face topographic undulating gradient theta2; b, the steep terrain factor U and the two-side comprehensive factor C are calculated; c, the terrain comprehensive judgment factor T is calculated; and d, the risk grades of the rock landslide are classified. According to the risk judgment method for the rock landslide and the application of the risk judgment method, topographical influence factors of the rock landslide are taken into comprehensive consideration, the risk area of the rock landslide is accurately classified in a quantitative mode, the accuracy of the risk judgment of the rock landslide is greatly improved, and a good landslide early-warning effect is achieved.

Description

technical field [0001] The invention relates to the technical field of landslide prevention engineering, in particular to a method for judging the risk of rock landslides and its application. Background technique [0002] The red layer is a clastic rock sedimentary stratum with red as the main color in appearance, widely distributed in the southwest, northwest, central and southern regions of China, and the most widely distributed is the Sichuan Basin, covering an area of ​​more than 260,000 square kilometers. The red bed area is prone to landslides, and many landslide disasters often occur in the rainy season, and rock landslides are one of the natural disasters that cannot be ignored. Rock landslides are a natural phenomenon that occur in mountainous areas or on road slopes. After a rock landslide occurs, the sliding rock mass and its upper surface soil move to the bottom of the hillside or the roadside, silting and impacting nearby residential buildings, factories and ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/20
CPCE02D17/20
Inventor 余斌胡伟
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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