A Calculation and Correction Method and Application of Bulk Density of Viscous Debris Flow with High Bulk Density

A debris flow and bulk density technology, applied in climate change adaptation, design optimization/simulation, etc., can solve the problem of inability to evaluate and prevent debris flow, provide more accurate parameters, cannot accurately calculate the magnification factor of debris flow and sediment, and is not suitable for high bulk density viscous debris flow bulk density Calculation and other problems, to achieve the effect of accurate sediment amplification factor, accurate flushing amount, and accurate peak flow

Active Publication Date: 2022-04-05
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The method for calculating the bulk density of debris flow in the earthquake area based on the particle size parameters of the debris flow source disclosed in this patent document is suitable for the prediction of the bulk density of debris flow ditches with high coarse particle content and low clay content in the debris flow source in the Wenchuan earthquake area, but it is not suitable for high The bulk density calculation of viscous debris flow cannot accurately calculate the sediment amplification factor of debris flow, so it cannot provide more accurate parameters for the evaluation and prevention of debris flow

Method used

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  • A Calculation and Correction Method and Application of Bulk Density of Viscous Debris Flow with High Bulk Density
  • A Calculation and Correction Method and Application of Bulk Density of Viscous Debris Flow with High Bulk Density
  • A Calculation and Correction Method and Application of Bulk Density of Viscous Debris Flow with High Bulk Density

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Embodiment 1

[0051] A method for calculating and correcting bulk density of viscous debris flow with high bulk density, comprising the following steps:

[0052] a. Judging the nature of debris flow and determining the range of bulk density of debris flow

[0053] Debris flow sediments show different sedimentary characteristics due to the different properties of the debris flow; if the sediments are mixed and piled up, supported by the matrix, the coarse particles are filled with fine particles, and there is an inverse particle size distribution of coarse particles on the top and fine particles on the bottom, then judge It is a viscous debris flow with a bulk density of 2.1g / cm 3 ;

[0054] b. Preliminary calculation of debris flow bulk density

[0055] Take a small sample of the debris flow sediment, carry out particle analysis, and select the particle weight percentage P 05 and the weight percentage of particles with a particle size greater than 2 mm in debris flow P 2 , calculate the...

Embodiment 2

[0081] A method for calculating and correcting bulk density of viscous debris flow with high bulk density, comprising the following steps:

[0082] a. Judging the nature of debris flow and determining the range of bulk density of debris flow

[0083] Debris flow sediments show different sedimentary characteristics due to the different properties of the debris flow; if the sediments are mixed and piled up, supported by the matrix, the coarse particles are filled with fine particles, and there is an inverse particle size distribution of coarse particles on the top and fine particles on the bottom, then judge It is a viscous debris flow with a high bulk density, with a bulk density of 2.2g / cm 3 ;

[0084] b. Preliminary calculation of debris flow bulk density

[0085] Take a small sample of the debris flow sediment, carry out particle analysis, and select the particle weight percentage P05 and the weight percentage of particles with a particle size greater than 2 mm in debris f...

Embodiment 3

[0112] A method for calculating and correcting bulk density of viscous debris flow with high bulk density, comprising the following steps:

[0113] a. Judging the nature of debris flow and determining the range of bulk density of debris flow

[0114] Debris flow sediments show different sedimentary characteristics due to the different properties of the debris flow; if the sediments are mixed and piled up, supported by the matrix, the coarse particles are filled with fine particles, and there is an inverse particle size distribution of coarse particles on the top and fine particles on the bottom, then judge It is a viscous debris flow with a high bulk density, with a bulk density of 2.25g / cm 3 ;

[0115] b. Preliminary calculation of debris flow bulk density

[0116] Take a small sample of the debris flow sediment, carry out particle analysis, and select the particle weight percentage P 05 and the weight percentage of particles with a particle size greater than 2 mm in debri...

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Abstract

The invention discloses a method for calculating and correcting the bulk density of viscous debris flow with high bulk density, which belongs to the technical field of debris flow prevention and control engineering, and is characterized in that it comprises the following steps: a. Judging the nature of the debris flow and determining the range of bulk density of the debris flow; b. Preliminary calculation of the bulk density of the debris flow; c. Correct the bulk density of the debris flow; measure the coarse particles of the accumulation fan of the debris flow. diameter and short diameter, calculate the corrected debris flow bulk density value. The present invention calculates and corrects the bulk density of the debris flow through the area ratio of the coarse particles in the measurement range, so that the calculation of the bulk density of the debris flow is more accurate, the calculation of the corresponding sediment amplification factor of the debris flow is also more accurate, and the calculation of the peak flow rate and the total amount of the debris flow is more accurate. It provides more accurate parameters for the evaluation and prevention of debris flow, which is conducive to improving the effect of debris flow prevention.

Description

technical field [0001] The invention relates to the technical field of debris flow prevention and control engineering, in particular to a method for calculating and correcting bulk density of viscous debris flow with high bulk density and its application. Background technique [0002] Debris flow is also one of the most common types of mountain disasters. The mudslides broke out suddenly and were very destructive. The hazards of debris flow can cause regional ecological environment imbalance, and aggravate the process of regional soil erosion and desertification. [0003] The two most important parameters in the assessment and prevention of debris flow are the peak flow rate and the total discharge volume of the debris flow. In the calculation of these two parameters under different frequency conditions, it is necessary to multiply the peak flow rate of clear water by the sediment amplification factor and The plugging coefficient is used to calculate the peak flow of debri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/25
CPCG06F30/20Y02A10/40
Inventor 余斌李阳春刘清华
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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