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A flow calculation method of debris flow behind a retaining dam and its application

A flow calculation and debris flow technology, applied in special data processing applications, climate change adaptation, geometric CAD, etc., can solve problems affecting the effect of disaster prevention and mitigation in debris flow areas, enhance flood discharge and disaster prevention capabilities, and ensure disaster prevention and mitigation effects. , The effect of reducing project cost

Active Publication Date: 2020-10-02
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the flow of debris flow behind the retaining dam cannot be accurately calculated, reliable data reference cannot be provided for debris flow prevention and control projects, which will affect the effect of disaster prevention and mitigation in debris flow areas

Method used

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  • A flow calculation method of debris flow behind a retaining dam and its application
  • A flow calculation method of debris flow behind a retaining dam and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A flow calculation method for debris flow behind a retaining dam, comprising the following steps:

[0034] a. The total amount of debris flow W to be obtained by hydrological calculation, unit m 3 and the upcoming debris flow peak flow Q B , unit m 3 / s, on-site survey to determine the storage capacity C of the retaining dam, unit m 3 , Debris flow yield stress τ, unit Pa, debris flow bulk density ρ, unit kg / m 3 and the characteristic particle size D of debris flow 90 , unit m;

[0035] b. According to the total amount W of the upcoming debris flow and the peak flow Q of the upcoming debris flow B , the storage capacity C of the retaining dam, the yield stress τ of the debris flow, the bulk density ρ of the debris flow and the characteristic particle size D of the debris flow 90 and the dimensionless yield stress factor τ * , for the flow Q behind the debris flow retaining dam A Calculation.

[0036] "a. The total amount W of the upcoming debris flow and the pe...

Embodiment 2

[0038] A flow calculation method for debris flow behind a retaining dam, comprising the following steps:

[0039] a. The total amount of debris flow W to be obtained by hydrological calculation, unit m 3 and the upcoming debris flow peak flow Q B , unit m 3 / s, on-site survey to determine the storage capacity C of the retaining dam, unit m 3 , Debris flow yield stress τ, unit Pa, debris flow bulk density ρ, unit kg / m 3 and the characteristic particle size D of debris flow 90 , unit m;

[0040] b. According to the total amount W of the upcoming debris flow and the peak flow Q of the upcoming debris flow B , the storage capacity C of the retaining dam, the yield stress τ of the debris flow, the bulk density ρ of the debris flow and the characteristic particle size D of the debris flow 90 and the dimensionless yield stress factor τ * , for the flow Q behind the debris flow retaining dam A Calculation.

[0041] In the step a, the total amount of upcoming debris flow refer...

Embodiment 3

[0049] A flow calculation method for debris flow behind a retaining dam, comprising the following steps:

[0050] a. The total amount of debris flow W to be obtained by hydrological calculation, unit m 3 and the upcoming debris flow peak flow Q B , unit m 3 / s, on-site survey to determine the storage capacity C of the retaining dam, unit m 3 , Debris flow yield stress τ, unit Pa, debris flow bulk density ρ, unit kg / m 3 and the characteristic particle size D of debris flow 90 , unit m;

[0051] b. According to the total amount W of the upcoming debris flow and the peak flow Q of the upcoming debris flow B , the storage capacity C of the retaining dam, the yield stress τ of the debris flow, the bulk density ρ of the debris flow and the characteristic particle size D of the debris flow 90 and the dimensionless yield stress factor τ * , for the flow Q behind the debris flow retaining dam A Calculation.

[0052] In the step a, the total amount of upcoming debris flow refer...

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Abstract

The invention discloses a method for calculating flow of mudslide behind a dam and application thereof, belonging to the field of mudslide prevention and control projects. The method comprises the following steps of a. obtaining incoming mudslide total W and mudslide peak flow Q through hydrologic calculation, and investigating on the side to determine a storage capacity C of the dam, a yield stress Tau of the mudslide, a volume weight Rho of the mudslide and a characteristic particle size D<90> of mudslide; and b. calculating the flow Q of mudslide behind the dam according to the incoming mudslide total W, the mudslide peak flow Q, the storage capacity C of the dam, the yield stress Tau of the mudslide, the volume weight Rho of the mudslide, the characteristic particle size D<90> of mudslide, and a dimensionless yield stress factor Tau*. The method is applicable to outdoor large scale actual calculation, can calculate the flow of the mudslide behind the dam accurately, provides reliable data reference for the mudslide prevention and control project, and ensures disaster prevention and mitigation effects in mudslide regions.

Description

technical field [0001] The invention relates to the field of mud-rock flow prevention and control engineering, in particular to a method for calculating the flow of mud-rock flow behind a retaining dam and its application. Background technique [0002] my country is a mountainous country with mountainous areas accounting for 70% of the total land area. Debris flow ditches are widely distributed and the disasters are serious. Debris flow prevention and control projects are one of the main measures for disaster prevention and mitigation of debris flow, especially for the protection of important places such as towns and traffic arteries. [0003] The retaining dam is an artificial structure built across the ditch bed in the debris flow formation area-circulation area. It is one of the most important and effective engineering structures for debris flow prevention and control. [0004] At present, scholars at home and abroad are in the stage of empirical judgment on the flow cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13
CPCG06F30/13Y02A10/40
Inventor 余斌胡伟李为乐
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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