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Judgment and recognition method of low-frequency debris flow gully based on characteristics of groove soil body

A debris flow ditch and soil technology, which is applied in the field of foundation soil survey, excavation, infrastructure engineering, etc., can solve the problems of limited regional conditions and the indistinct channel characteristics of the eruption period of the geological conditions in the vegetation coverage area, and achieve accurate The effect of high performance and simple judgment method

Active Publication Date: 2020-10-02
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

However, these methods mainly identify low-frequency debris flow gullies that have occurred, and there are great regional restrictions. For gullies with high vegetation coverage, stable regional geological conditions, long periods of debris flow outbreaks, and unobvious channel characteristics, such It is difficult to effectively identify potential low-frequency debris flow gullies with the method

Method used

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  • Judgment and recognition method of low-frequency debris flow gully based on characteristics of groove soil body
  • Judgment and recognition method of low-frequency debris flow gully based on characteristics of groove soil body
  • Judgment and recognition method of low-frequency debris flow gully based on characteristics of groove soil body

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Embodiment Construction

[0032] The invention discloses a low-frequency mud-rock flow ditch identification method based on groove soil characteristics, which includes the following steps:

[0033] (1) Use high-resolution remote sensing images or on-site surveys to determine the distribution of grooved soil in the watershed, and then measure the area of ​​grooved soils by means of high-resolution remote sensing images or on-site measurements based on the GIS platform S 凹槽 and the catchment area S of the potential recharge water source upstream of the grooved soil 汇 , and then through the area S of the grooved soil 凹槽 and the catchment area S of the potential recharge water source upstream of the grooved soil 汇 , calculate the ratio a of the catchment area at the back end of the groove to the soil area of ​​the groove:

[0034]

[0035] Among them, a is the area ratio; S 汇 is the catchment area of ​​the upstream potential recharge water source, in m 2 ;S 凹槽 is the soil area of ​​the groove, in ...

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Abstract

The invention discloses a judgment and recognition method of a low-frequency debris flow gully based on the characteristics of a groove soil body. By recognizing the distribution of the groove soil body in a basin, the area of the groove soil body, the area of a water catchment region of an upstream potential supplemental water source of the groove soil body, the average gradient of the groove soil body and the average thickness of the groove soil body, the stability of the groove soil body is calculated; whether the groove soil body in the basin is in a stable state can be judged; thus, whether the potential low-frequency debris flow gully exists in the basin is judged; and the more effective theoretical support is provided for the prediction, prevention and treatment of the low-frequencydebris flow gully.

Description

technical field [0001] The invention belongs to the technical field of geological disaster prediction, and in particular relates to a low-frequency mud-rock flow ditch identification method based on groove soil characteristics. Background technique [0002] According to the analysis and statistics of modern debris flow disasters in various countries in the world, most of the debris flow disasters that cause heavy casualties are low-frequency debris flow disasters. Low-frequency debris flows have the characteristics of strong concealment, mass and simultaneous occurrence, and are potentially harmful. Once the scale of the outbreak is large, it will be extremely destructive, causing huge disaster losses to residents and buildings near the downstream ditch mouth. Therefore, the identification of low-frequency debris flow gullies is the most urgent problem to be solved in the research of geological disaster prevention and control at home and abroad. [0003] At present, the ide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D1/02
CPCE02D1/027E02D17/20
Inventor 陈宁生张勇黄娜王涛邓明枫丁海涛
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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