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Shallow surface soil landslide forecast method

A superficial, soil-quality technology, used in forecasting, alarms, instruments, etc., can solve the problems of poor disaster prevention applicability, complex early warning work, and many landslide factors, so as to improve the disaster prevention ability, the early warning effect is intuitive and clear, and the accuracy is improved. sexual effect

Active Publication Date: 2016-12-07
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] 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, 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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  • Shallow surface soil landslide forecast method

Examples

Experimental program
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Effect test

Embodiment 1

[0059] see Figure 1-Figure 4 , a method for forecasting shallow surface soil landslides, comprising the following steps:

[0060] a. Measure shallow surface soil landslide slope α, landslide body area A, landslide upper side slope β, and landslide upper side area A Lu , The topographic undulation slope on the left side of the landslide body θ 1 , The terrain undulation slope on the right side of the landslide body θ 2 , Topographic area A on the left side of the landslide body L and the terrain area A on the right side of the landslide body R ;

[0061] b. Calculate the slope factor S according to formula 1, calculate the upward slowing factor U according to formula 2, and calculate the terrain factor C on both sides according to formula 3;

[0062] S=tan(α) (Formula 1)

[0063] U=tan(α-β)*(A Lu / A) (Formula 2)

[0064] C=tan(θ 1 )*(A L / A)+tan(θ 2 )*(A R / A) (Formula 3)

[0065] c. Calculate the topographic factor T of the shallow surface soil landslide accordin...

Embodiment 2

[0081] see Figure 1-Figure 4 , a method for forecasting shallow surface soil landslides, comprising the following steps:

[0082] a. Measure shallow surface soil landslide slope α, landslide body area A, landslide upper side slope β, and landslide upper side area A Lu , The topographic undulation slope on the left side of the landslide body θ 1 , The terrain undulation slope on the right side of the landslide body θ 2 , Topographic area A on the left side of the landslide body L and the terrain area A on the right side of the landslide body R ;

[0083] b. Calculate the slope factor S according to formula 1, calculate the upward slowing factor U according to formula 2, and calculate the terrain factor C on both sides according to formula 3;

[0084] S=tan(α) (Formula 1)

[0085] U=tan(α-β)*(A Lu / A) (Formula 2)

[0086] C=tan(θ 1 )*(A L / A)+tan(θ 2 )*(A R / A) (Formula 3)

[0087] c. Calculate the topographic factor T of the shallow surface soil landslide accordin...

Embodiment 3

[0104] see Figure 1-Figure 4 , a method for forecasting shallow surface soil landslides, comprising the following steps:

[0105] a. Measure shallow surface soil landslide slope α, landslide body area A, landslide upper side slope β, and landslide upper side area A Lu , The topographic undulation slope on the left side of the landslide body θ 1 , The terrain undulation slope on the right side of the landslide body θ 2 , Topographic area A on the left side of the landslide body L and the terrain area A on the right side of the landslide body R ;

[0106] b. Calculate the slope factor S according to formula 1, calculate the upward slowing factor U according to formula 2, and calculate the terrain factor C on both sides according to formula 3;

[0107] S=tan(α) (Formula 1)

[0108] U=tan(α-β)*(A Lu / A) (Formula 2)

[0109] C=tan(θ 1 )*(A L / A)+tan(θ 2 )*(A R / A) (Formula 3)

[0110] c. Calculate the topographic factor T of the shallow surface soil landslide accordin...

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Abstract

The invention discloses a shallow surface soil landslide forecast method and belongs to the technical field of landslide prevention and control engineering. The method comprises the following steps of measuring a slope alpha of a shallow surface soil landslide mass, an area A of the landslide mass, an upper-side slope beta of a landslide, an upper-side area ALu of the landslide, a left-side topographic relief slope theta 1 of the landslide mass, a right-side topographic relief slope theta 2 of the landslide mass, a left-side topographic area AL of the landslide mass and a right-side topographic area AR of the landslide mass; calculating a slope factor S, an upper relief factor U and a two-side topographical factor C; calculating a topographical factor T of the shallow surface soil landslide; calculating a hydrological factor R; calculating a clay index N; measuring a solid coefficient F on site, and calculating a permeation index K; calculating a topographical factor G; and determining a shallow surface soil landslide inducing possibility grade, and performing landslide forecast. According to the method, the effects of three major factors of geology, topography and hydrology causing the landslide are considered at the same time; a measurement and calculation result better conforms to a landslide formation mechanism; the landslide forecast accuracy and efficiency are high; and the disaster prevention applicability is greatly improved.

Description

technical field [0001] The invention relates to the technical field of landslide prevention engineering, in particular to a method for forecasting shallow surface soil landslides. Background technique [0002] Shallow surface soil landslide is a natural phenomenon that occurs in mountainous areas or road slopes. After the shallow surface soil landslide occurs, the slope soil moves to the bottom of the hillside or the roadside, silts and impacts nearby residential buildings, factories and other construction facilities, or roads, causing great damage. The occurrence of shallow surface soil landslides often needs to meet three conditions: 1. Topographic conditions that are conducive to the occurrence of shallow soil landslides; 2. Favorable geological conditions, that is, loose covering soil layers; eventually triggering the occurrence of landslides. These conditions comprehensively affect and determine the stability of slope soil. [0003] Among them, the influence factors ...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/26G08B21/10
Inventor 余斌赵怀宝
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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