Calculation method of outburst discharge of large particle weir and plug dam under impact of outburst viscous debris flow

A technology of flow calculation and debris flow, applied in the direction of calculation, instrument, geometric CAD, etc., can solve the problem of inaccurate determination of the burst flow of large-particle dam dam, and achieve the effect of accurate and reliable calculation method

Active Publication Date: 2018-12-11
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the method for calculating the flow rate of the large particle dam under the impact of the bu

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  • Calculation method of outburst discharge of large particle weir and plug dam under impact of outburst viscous debris flow
  • Calculation method of outburst discharge of large particle weir and plug dam under impact of outburst viscous debris flow
  • Calculation method of outburst discharge of large particle weir and plug dam under impact of outburst viscous debris flow

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[0070] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0071] Such as figure 1 As shown, a method for calculating the burst flow rate of large particle dams under the impact of burst viscous debris flow includes the following steps:

[0072] S1. Obtain the burst width B of the large particle dam at the burst point;

[0073] S2. Establishing a large-grain plugging model taking the barrier dam as the calculation object;

[0074] The large particle blockage model in the above st...

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Abstract

A calculation method of outburst discharge of a large granular weir and a plug dam under the impact of outburst viscous debris flow is disclosed. Through analysis of the static equilibrium relationship of large particles in a weir-plug dam under the impact of viscous debris flow, the formulas for calculating the critical mud depth of debris flow and the maximum particle diameter in weir-plug dam are derived, then the calculation model of weir plug dam outburst discharge and maximum particle diameter is established by using the calculation formula of weir plug dam outburst discharge, and the reliability of the model is verified by an example, and thus an accurate and reliable calculation method is provided for determining the outburst discharge in debris flow prevention and control engineering.

Description

technical field [0001] The invention belongs to the technical field of flow calculation of dams, and in particular relates to a method for calculating the flow of large particle dams under the impact of a burst viscous debris flow. Background technique [0002] Large particle dams refer to loose accumulations containing many large particles with a diameter of more than 2m. There are two types of large particle dams in debris flow channels. The first type is large particle dams formed by landslides and collapses. The second type is that the friction of the hook bed increases sharply or the longitudinal slope suddenly slows down, so that the viscous debris flow carries more large particles and stops in the narrow channel, thus forming a large particle dam. Under such conditions, large particle dams are prone to full-face failure, and the flow rate of debris flow generally increases after the dam breaks. For example, on July 22, 2003, the burst-type viscous debris flow occurre...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13
Inventor 李俊赵苑迪
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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