A landslide early warning method in red bed area and its application

A technology for red-bed areas and landslides, applied in data processing applications, forecasting, alarms, etc., can solve the problems of poor disaster prevention applicability, complex early warning work, and many landslide factors, and achieve strong disaster prevention applicability and high prevention. Disaster applicability, high accuracy effect

Inactive Publication Date: 2018-06-29
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-level comprehensive monitoring and early warning method for landslide disasters disclosed in this patent document requires a large number 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; then determines whether the study area has For the possibility of landslides, there are many landslide factors that need to be analyzed, the whole early warning work is complicated, the response is lagging, the early warning efficiency is low, and the applicability of disaster prevention is poor

Method used

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  • A landslide early warning method in red bed area and its application
  • A landslide early warning method in red bed area and its application
  • A landslide early warning method in red bed area and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see Figure 1-Figure 3 , a landslide early warning method in a red bed area, comprising the following steps:

[0046] a. Taking the landslide and non-landslide in the red layer area as the investigation object, measure the slope α, landslide area A, upper slope β, and upper area A of the landslide and non-landslide u , the lateral slope θ on the left side 1 , the right lateral slope θ 2 , left lateral area A L , right lateral area A R and the terrace area A' on the landslide;

[0047] b. Calculate the slope factor S, the upper side factor U and the two side factors C in the topographic factors that induce shallow soil landslides in the red bed area respectively according to the formula, and determine the free surface factor F through the comparison of topographic conditions, and the free surface F is 0.1, F is 0 if there is no free surface;

[0048] S=tanα (Formula 1)

[0049]

[0050]

[0051] C, according to step b, draw the topographic factor T that indu...

Embodiment 2

[0086] see Figure 1-Figure 3 , a landslide early warning method in a red bed area, comprising the following steps:

[0087] a. Taking the landslide and non-landslide in the red layer area as the investigation object, measure the slope α, landslide area A, upper slope β, and upper area A of the landslide and non-landslide u , the lateral slope θ on the left side 1 , the right lateral slope θ 2 , left lateral area A L , right lateral area A R and the terrace area A' on the landslide;

[0088] b. Calculate the slope factor S, the upper side factor U and the two side factors C in the topographic factors that induce shallow soil landslides in the red bed area respectively according to the formula, and determine the free surface factor F through the comparison of topographic conditions, and the free surface F is 0.1, F is 0 if there is no free surface;

[0089] S=tanα (Formula 1)

[0090]

[0091]

[0092] C, according to step b, draw the topographic factor T that indu...

Embodiment 3

[0128] see Figure 1-Figure 3 , a landslide early warning method in a red bed area, comprising the following steps:

[0129] a. Taking the landslide and non-landslide in the red layer area as the investigation object, measure the slope α, landslide area A, upper slope β, and upper area A of the landslide and non-landslide u , the lateral slope θ on the left side 1 , the right lateral slope θ 2 , left lateral area A L , right lateral area A R and the terrace area A' on the landslide;

[0130] b. Calculate the slope factor S, the upper side factor U and the two side factors C in the topographic factors that induce shallow soil landslides in the red bed area respectively according to the formula, and determine the free surface factor F through the comparison of topographic conditions, and the free surface F is 0.1, F is 0 if there is no free surface;

[0131] S=tanα (Formula 1)

[0132]

[0133]

[0134] C, according to step b, draw the topographic factor T that indu...

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Abstract

The invention discloses a red bed region landslide early warning method and application thereof, belonging to the landslide control engineering technical field. The method comprises the steps of: employing a red bed region landslide mass and a non-landslide mass as investigation objects, and measuring the slope alpha, landslide mass area A, upper portion slope beta, upper portion area Au, left side transverse slope theta1, right side transverse slope theta2, left side transverse area AL, and right side transverse area AR of the landslide mass and the non-landslide mass, and the terrace area A' on the landslide mass; calculating a slop factor S, an upper side factor U and two sides factor C, and determining a free face factor F through topographic condition contrast; and calculating a topographical factor T, equivalent rainfall R*, a rainfall factor R and a landside critical value Cr, determining a slope grade, and emitting an early warning signal. The method meanwhile considers the effects and mutual influence of the topographical factor and the rainfall factor which trigger landslides, obtains a landslide critical value which accords more with a triggering shallow-layer landslide mechanism, and has the characteristics of high accuracy of landslide early warning and strong disaster prevention applicability.

Description

technical field [0001] The invention relates to the technical field of landslide prevention and control engineering, in particular to an early warning method for shallow soil landslides induced by previous rainfall and rainfall intensity in red bed areas and an application thereof. Background technique [0002] The red bed area is composed of red sandstone, glutenite, siltstone, sandy shale and mudstone, etc. It is a typical layered rock mass, and the rock formations are mostly gentle. Soil landslides in the red bed area are mainly shallow soil landslides. The overlying soil layer on this kind of slope is thin, the rock layer is gently inclined, and large-scale sliding often occurs under heavy rainfall conditions. Shallow soil landslides that slide along the base-cover interface in the red bed area mainly occur in the special area of ​​1-5m. This type of landslide has an important relationship with rainfall infiltration, and the selection of landslide parameters is also rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B21/10G06Q10/04G06Q50/26
CPCG06Q10/04G06Q50/26G08B21/10
Inventor 余斌禹磊
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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