Early-warning method for heavy-rainfall type landslide hazard

A heavy rainfall and disaster technology, applied in the field of data processing, can solve the problems of low accuracy, inadequate measures, serious property damage, etc., to achieve the effect of enhancing safety, reducing property damage, and improving accuracy

Active Publication Date: 2015-09-09
HANGZHOU CHENQING HEYE TECH
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Problems solved by technology

Existing research on landslide disasters only calculates the soil quality and looseness of the soil itself, and obtains the probability of landslide occurrence, without analyzing external environmental factors, and the accuracy is not high
The loss that may be caused by the landslide is not estimated, resulting in that the measures taken are not in place when the landslide occurs, and the property loss is serious

Method used

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  • Early-warning method for heavy-rainfall type landslide hazard
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  • Early-warning method for heavy-rainfall type landslide hazard

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Embodiment Construction

[0040] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0041] like Figure 1-5 As shown, a heavy rainfall type landslide disaster early warning method, its operation process is as follows:

[0042] (1) Calculate the probability of landslide occurrence in different areas within the range to be detected, and divide the range to be detected into hazard levels according to the probability of occurrence. The hazard level areas of this division include polar hazard areas, low hazard areas, medium hazard areas, and high hazard areas areas and extremely high-risk areas.

[0043] Specifically, the process of calculating the landslide probability: to study the relationship between the probability of landslide occurrence and certain enviro...

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Abstract

The present invention relates to the field of data processing methods, in particular to an early-warning method for a heavy-rainfall type landslide hazard. The operation process of the method comprises the following steps: (1) calculating the probability of occurrence of a landslide for different zones in a range to be detected, and dividing danger-class zones, including an ultralow-danger zone, a low-danger zone, a medium-danger zone, a high-danger zone and an ultrahigh-danger zone; and (2) carrying out a rainfall type landslide hazard early-warning analysis process which comprises: (a) analyzing the possibility of occurrence of the landslide at different rainfalls, wherein the rainfall of 0-99 mm is a low-danger rainfall, the rainfall of 90-150 mm is a medium-danger rainfall, and the rainfall not smaller than 150 mm is a high-danger rainfall; and (b) making early warning for the different zones in accordance with that the possibilities of occurrence of landslides for different zones at different rainfalls are different, wherein the higher the class of early warning, the higher the possibility of occurrence of the landslide is, and the classes of early warning consist of 5-class early warning, 4-class early warning, 3-class early warning, 2-class early warning and 1-class early warning sequentially from high to low.

Description

technical field [0001] The invention relates to the field of data processing methods, in particular to a heavy rainfall type landslide disaster early warning method. Background technique [0002] At present, the research on landslide disasters in geological disasters mainly focuses on regional landslides. With the change of global climate and the increase of extreme weather processes, the induction of landslide disasters by short-term heavy precipitation is becoming more and more serious. Landslide disasters in special Early warning of weather conditions creates new requirements. Rainfall-type landslide early warning is closely related to regional landslides. In the same area, landslide disasters with different risk levels respond differently to the same rainfall process. At the same time, landslide disasters with the same risk level will respond differently to different rainfall intensities. The existing landslide disaster research only calculates the soil quality and loo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 张斌文仁强张耀东
Owner HANGZHOU CHENQING HEYE TECH
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