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A Calculation Method and Application of Outburst Debris Flow Discharge in Earthquake Area

A calculation method and debris flow technology, applied in climate change adaptation, design optimization/simulation, instruments, etc., can solve problems such as narrow scope of application and poor universal applicability, and achieve the effect of good universal applicability and good universal applicability

Active Publication Date: 2022-03-04
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The method for calculating the burst flow rate of large particle dams under the impact of breach-type viscous debris flows disclosed in this patent document is only very specific for the failure of large-particle dams under the impact of breach-type viscous debris flows. The scope of application is often very narrow, and cannot be widely promoted, and the universality is poor

Method used

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  • A Calculation Method and Application of Outburst Debris Flow Discharge in Earthquake Area
  • A Calculation Method and Application of Outburst Debris Flow Discharge in Earthquake Area
  • A Calculation Method and Application of Outburst Debris Flow Discharge in Earthquake Area

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Embodiment 1

[0039] A method for calculating the flow rate of a burst type debris flow in an earthquake zone, comprising the following steps:

[0040] a. Obtain the basic data of debris flow, including the total amount Q of a debris flow process, in m 3 , debris flow severity γ c , unit t / m 3 , the gravity of water γ w , unit t / m 3 and the gravity of debris flow solid matter γ H , unit t / m 3 ; Calculate the amount Q of this debris flow through formula 1 H , unit m 3 ;

[0041] Q H =Q(γ c -γ w ) / (γ H -γ w ) Formula 1

[0042] b. The on-site investigation obtained the duration of the debris flow flood peak t, the unit is s and the cross-sectional area A of the debris flow flow, the unit is m 2 , the clear water flood peak discharge Q is obtained by the rain flood method p , unit m 3 / s; check the sediment correction coefficient K S , introduce the sediment correction coefficient K S Make corrections to solve the peak flow Q of the burst section of the burst debris flow by f...

Embodiment 2

[0050] A method for calculating the flow rate of a burst type debris flow in an earthquake zone, comprising the following steps:

[0051] a. Obtain the basic data of debris flow, including the total amount Q of a debris flow process, in m 3 , debris flow severity γ c , unit t / m 3 , the gravity of water γ w , unit t / m 3 and the gravity of debris flow solid matter γ H , unit t / m 3 ; Calculate the amount Q of this debris flow through formula 1 H , unit m 3 ;

[0052] Q H =Q(γ c -γ w ) / (γ H -γ w ) Formula 1

[0053] b. The on-site investigation obtained the duration of the debris flow flood peak t, the unit is s and the cross-sectional area A of the debris flow flow, the unit is m 2 , the clear water flood peak discharge Q is obtained by the rain flood method p , unit m 3 / s; check the sediment correction coefficient K S , introduce the sediment correction coefficient K S Make corrections to solve the peak flow Q of the burst section of the burst debris flow by f...

Embodiment 3

[0062] A method for calculating the flow rate of a burst type debris flow in an earthquake zone, comprising the following steps:

[0063] a. Obtain the basic data of debris flow, including the total amount Q of a debris flow process, in m 3 , debris flow severity γ c , unit t / m 3 , the gravity of water γ w , unit t / m 3 and the gravity of debris flow solid matter γ H , unit t / m 3 ; Calculate the amount Q of this debris flow through formula 1 H , unit m 3 ;

[0064] Q H =Q(γ c -γ w ) / (γ H -γ w ) Formula 1

[0065] b. The on-site investigation obtained the duration of the debris flow flood peak t, the unit is s and the cross-sectional area A of the debris flow flow, the unit is m 2 , the clear water flood peak discharge Q is obtained by the rain flood method p , unit m 3 / s; check the sediment correction coefficient K S , introduce the sediment correction coefficient K S Make corrections to solve the peak flow Q of the burst section of the burst debris flow by f...

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Abstract

The invention discloses a method for calculating the flow rate of a collapse-type debris flow in an earthquake area, which belongs to the technical field of debris flow prevention and control engineering, and is characterized in that it comprises the following steps: a. Obtaining basic data of the debris flow, and obtaining the outflow Q of the debris flow H ; b. The on-site investigation obtained the duration of the debris flow flood peak t and the cross-sectional area of ​​the debris flow, and obtained the clear water flood peak flow Q p ;Introduce sediment correction coefficient K S Make corrections to solve the peak flow rate Q of the burst section of the burst debris flow 0 ; c. Calculate the peak flow Q at the section downstream of the breach c . The present invention considers the energy system of the natural blockage body in the debris flow basin after the earthquake, defines the initial potential energy of the collapse type debris flow, so as to better analyze its energy system; It provides a more reasonable and accurate basis for the risk assessment and prevention of post-burst debris flow disasters, and has good universality.

Description

technical field [0001] The invention relates to the technical field of mud-rock flow prevention engineering, in particular to a calculation method and application of a burst-type mud-rock flow flow rate in an earthquake zone. Background technique [0002] Debris flow is an extremely complex geological disaster that occurs in mountainous areas. It is a two-phase fluid that is mixed with solid materials such as soil and stone and water and moves along steep ditch slopes under the action of gravity. my country's debris flow disasters spread across the vast mountainous areas of 26 provinces and cities, with a total of tens of thousands of distributions. It is one of the countries most seriously threatened by debris flow disasters in the world. Debris flow is a mixture of loose soil, water, and gas flowing along natural slopes or pressure slopes. It often occurs in small watersheds in mountainous areas. It is a solid, liquid, and gas three-phase fluid containing a large number of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/14
CPCG06F2119/06G06F30/20Y02A10/40
Inventor 常鸣周超周宇窦向阳
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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