Method for Predicting Movement Parameters of Dry Debris Flow in High-Speed ​​and Long-distance Landslides

A technology of movement parameters and debris flow, applied in the direction of prediction, data processing application, electrical digital data processing, etc., can solve the problem of debris flow that is only suitable for general landslides, unsuitable for high-speed remote landslides, movement speed and movement time cannot be predicted, etc. problem, to achieve the effect of simple calculation and accurate prediction

Inactive Publication Date: 2019-07-05
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0026] In summary, the current methods can only predict the movement distance of landslides, but cannot predict the movement speed and movement time, and most of them are only suitable for general landslides, not suitable for high-speed and long-distance landslide debris flows.

Method used

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  • Method for Predicting Movement Parameters of Dry Debris Flow in High-Speed ​​and Long-distance Landslides
  • Method for Predicting Movement Parameters of Dry Debris Flow in High-Speed ​​and Long-distance Landslides
  • Method for Predicting Movement Parameters of Dry Debris Flow in High-Speed ​​and Long-distance Landslides

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[0048] The specific implementation of the present invention will be described in conjunction with the examples.

[0049] Velocity v when a landslide just slides out of the shear exit c is 50m / s, the vertical distance h between the shear exit and the hit mountain is 100m; the collision recovery coefficient e is 0.55; the angle α between the velocity direction of the landslide and the hit mountain before the collision is 45°, and the landslide and the hit mountain The friction coefficient μ between the impacting bodies is 0.25; the slide bed slope β is 6°; the debris flow friction coefficient tanθ is 0.16. Predict the moving distance, moving speed and moving time of this high-speed remote landslide dry debris flow.

[0050] According to formula (A):

[0051]

[0052] The velocity of debris flow obtained from formula (B) is:

[0053]

[0054] The movement time t' of the debris flow obtained from formula (C) is:

[0055]

[0056] Therefore, according to the above esti...

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Abstract

The invention belongs to the technical field of geological disaster prevention and controlling, and in particular relates to a method for predicting a high-speed remote landslide dry debris flow movement parameter. The movement parameter comprises movement speed, movement distance and movement time. In consideration of landslide short-range flight phase and air influence on the landslide mass into account, the method is more reasonable; and the acceleration effect of the debris flow is taken into account, the method is more suitable for engineering actual, the prediction is more accurate, and the computation is simple and convenient; and the movement speed, the movement distance and the movement time of the high-speed remote landslide dry debris flow can be predicted at the same time; the influence range of the disaster can be predicted to provide more information of the disaster prediction so as to achieve the aim of preventing disasters and reducing damages.

Description

technical field [0001] The invention belongs to the technical field of prevention and control of geological disasters, and in particular relates to a method for predicting movement parameters of dry debris flow of high-speed and long-distance landslides. Background technique [0002] The high-speed and long-distance landslide debris flow is a generalized landslide, which is composed of short-range high-speed landslide and long-distance debris flow after breaking and disintegrating. The high-speed remote landslide dry debris flow refers to the landslide debris fluid without the participation of water in the formation process. For example, most of the debris flows formed by dozens of high-speed and long-distance landslides induced by the Wenchuan Earthquake were formed under anhydrous and dry conditions. [0003] High-speed and long-distance landslide-the movement of the debris flow has two characteristics: high speed and long distance. Its speed is generally above 30m / s, fa...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06Q10/04G06Q50/26
CPCG06Q10/04G06Q50/26
Inventor 刘长江许强阳小燕吴玉友杨少朋青云杰
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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