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A Calculation Method and Application of Maximum Superelevation of Debris Flow Bend

A calculation method and technology of debris flow, applied in construction, water conservancy engineering equipment, water conservancy engineering and other directions, can solve problems such as poor universality, and achieve the effect of preventing casualties and property losses, high disaster prevention applicability and universality

Active Publication Date: 2019-02-12
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The superelevation calculation method of the debris flow curve disclosed in this patent document follows the principle of dimensional harmony, and the obtained superelevation value of the debris flow curve is relatively accurate, which can provide theoretical data for debris flow defense measures. However, it is only applicable to debris flows with the same nature and curvature. The superelevation calculation of debris flow curves with the same radius, and most of the targets are viscous debris flows, with poor universality

Method used

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  • A Calculation Method and Application of Maximum Superelevation of Debris Flow Bend
  • A Calculation Method and Application of Maximum Superelevation of Debris Flow Bend
  • A Calculation Method and Application of Maximum Superelevation of Debris Flow Bend

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Embodiment 1

[0029] A method for calculating the maximum superelevation of a debris flow curve includes the following steps:

[0030] a. Obtain the average velocity V of the debris flow in the place where the debris flow occurs, in m / s;

[0031] b. Measure the width of the debris flow channel B in the place where the debris flow occurs, in m;

[0032] c. Measure the curvature radius R of the center of the debris flow curve on site, in m;

[0033] d. Measure and calculate the yield stress τ of debris flow, in Pa;

[0034] e. Measure and calculate the debris flow density p, in kg / m 3 ;

[0035] f. The maximum superelevation value ΔH of the debris flow curve is calculated by formula 1, in m;

[0036]

[0037] In the present invention, "a. Obtain the average velocity V of the debris flow in the place where the debris flow occurs; b. Measure the width of the debris flow channel B at the place where the debris flow occurs; c. Measure the curvature radius R of the center of the debris flow curve; d. Measure ...

Embodiment 2

[0039] A method for calculating the maximum superelevation of a debris flow curve includes the following steps:

[0040] a. Obtain the average velocity V of the debris flow in the place where the debris flow occurs, in m / s;

[0041] b. Measure the width of the debris flow channel B in the place where the debris flow occurs, in m;

[0042] c. Measure the curvature radius R of the center of the debris flow curve on site, in m;

[0043] d. Measure and calculate the yield stress τ of debris flow, in Pa;

[0044] e. Measure and calculate the debris flow density p, in kg / m 3 ;

[0045] f. The maximum superelevation value ΔH of the debris flow curve is calculated by formula 1, in m;

[0046]

[0047] The invention is suitable for the calculation of the maximum superelevation of the curve under the condition of different yield stress debris flows at different speeds at the same curve.

[0048] It can accurately calculate the maximum superelevation value of the curve, and provide a reliable basis f...

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Abstract

The invention discloses a biggest superelevation calculation method for a debris flow curve and application and belongs to the technical field of debris flow preventing and treating projects. The biggest superelevation calculation method for the debris flow curve is characterized by comprising the following steps that a, the average flow speed V of debris flow at the debris flow occurring place is acquired; b, the channel width B of the debris flow at the debris flow occurring place is measured on site; c, the center curvature radius R of the debris flow curve is measured on site; d, the yielding stress tau of the debris flow is measured and calculated; e, the density Rho of the debris flow is measured and calculated; and f, a biggest superelevation value delta H of the debris flow curve is acquired by means of calculation of formula 1. The biggest superelevation calculation method for the debris flow curve is applicable to actual large-scale calculation on the field, the influences of the nature of the debris flow on the superelevation are considered, superelevation may be produced by the debris flow with different yielding stresses at the same curve position under different speed conditions can be accurately calculated, better theoretical data reference is provided for defensive measures of the debris flow, and higher disaster preventing applicability and universality are achieved for debris flow disaster reducing.

Description

Technical field [0001] The invention relates to the technical field of debris flow prevention and control engineering, in particular to a method and application for calculating the maximum superelevation of a debris flow curve. Background technique [0002] Debris flow is a torrential flow formed by torrential rains and floods that contain sand and rock and soft soil mountains are saturated and diluted. Its area, volume and flow are large, while landslides are areas with a small area of ​​diluted soil. Typical debris flows are suspended It is composed of viscous mud with coarse solid debris and rich in silt and clay. [0003] Under proper topographical conditions, a large amount of water soaks the solid accumulation material in the flowing water hillside or gully bed, so that its stability is reduced. The solid accumulation material saturated with water moves under the action of its own gravity to form a debris flow. Debris flow is a disastrous geological phenomenon. Usually the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B1/00
CPCE02B1/00
Inventor 余斌李龙刘清华
Owner CHENGDU UNIVERSITY OF TECHNOLOGY