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Strong earthquake area debris flow activity prediction method based on material source aggregation quantity

A prediction method and debris flow technology, applied in special data processing applications, instruments, climate change adaptation, etc., can solve problems such as inaccurate calculation results

Active Publication Date: 2019-10-29
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the present invention provides a method for predicting debris flow activity in strong earthquake areas based on source accumulation, which solves the problem that the calculation results of previous methods are not accurate enough and cannot be targeted to strengthen the prediction of highly active debris flow. The problem of the prevention and control measures of the ditch

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  • Strong earthquake area debris flow activity prediction method based on material source aggregation quantity
  • Strong earthquake area debris flow activity prediction method based on material source aggregation quantity
  • Strong earthquake area debris flow activity prediction method based on material source aggregation quantity

Examples

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Embodiment 1

[0110] The present invention is used to analyze the Futang ditch in the strong earthquake area of ​​Wenchuan, and to calculate the relationship between the activity of the debris flow ditch and the accumulation of material sources.

[0111] Futanggou Debris Flow Ditch in Wenchuan County is located in Taoguan Village, Yinxing Township, Yingxiu Town, Wenchuan County, Aba Prefecture, on the right bank of the Minjiang River. "The drainage area is 2.29 square kilometers. Futanggou is located in the subtropical humid climate area of ​​the Sichuan Basin. Since the channel is located in the rainstorm area of ​​the Minjiang River basin, the rainfall is relatively abundant. After the earthquake, unfavorable geological phenomena developed in the Futanggou drainage basin. The amount of loose provenance has increased greatly, and its main provenance includes three types: collapsing deposits, slope erosion and ditch-bed deposits, among which the total amount of collapsing deposits is 15.17×1...

Embodiment 2

[0125] The invention is used to analyze the water trenches in the strong earthquake area of ​​Wenchuan, and calculate the relationship between the activities of the debris flow channels and the accumulation of material sources.

[0126] Shuidagou is located at the location of the No. 2 Society of Nanyue Village, Longchi Town, Dujiangyan City. The geographical coordinates of the mouth of the ditch are 103°33′43″ east longitude and 31°5′17″ north latitude. Nanyue Village is located 2km northeast of Xinchang Town, Longchi Town. Shuidagou belongs to the mid-subtropical humid monsoon climate zone of the Sichuan Basin, with frequent rainy weather. Shuidagou is located in the denudation and erosion landform area, and the valley area is a typical high school mountain canyon landform, mainly distributed in the alpine area. Groove area 0.5km 2 , its main provenance includes three types of collapsing deposits, slope erosion and gully bed deposits, among which the total amount of collaps...

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Abstract

The invention discloses a strong earthquake area debris flow activity prediction method based on material source aggregation quantity, which comprises the following steps: S1, collecting the longitudinal sections of 20 debris flow ditches through surveying and mapping in a large scale,, equally dividing the longitudinal section of each ditch according to elevation, and measuring the ditch length lof each equally segmented ditch and the height difference h of the ditch section; s2, measuring the total trench length L of the debris flow main trench and the maximum relative height difference H of the debris flow trench; s3, obtaining the total source quantity P in the debris flow drainage basin and the drainage basin area A of the debris flow gully through remote sensing interpretation and field investigation. The method solves the problems that a calculation result of a previous method is not accurate enough, and prevention and treatment measures for a strong-activity debris flow channel cannot be enhanced in a targeted mode.

Description

technical field [0001] The invention relates to the field of mud-rock flow prevention and control engineering, in particular to a method for predicting mud-rock flow activity in strong earthquake areas based on the accumulation of matter sources. Background technique [0002] Debris flow is a common geological disaster in mountainous areas. It erupts suddenly, lasts for a short time, and has strong destructive power. The damage involves many fields such as transportation, hydropower, and land. Seismic activity has changed the terrain and other natural conditions in mountainous areas, and caused the mountain slopes in the earthquake area to be in an unstable state for a long time, which in turn produced a large number of loose sources, providing more favorable conditions for the occurrence of debris flows. Therefore, the debris flow in the earthquake area will maintain a relatively high activity for a long period of time after the earthquake. Therefore, in order to predict th...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20Y02A10/40
Inventor 唐川帖宇李宁陈明龚凌枫张宪政罗玉婷
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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