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
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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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