Earth-rock dam break centrifugal model test analysis method

A centrifugal model test and analysis method technology, applied in the field of test theory, can solve the problems of occupying large land and water resources, difficult test risk control, long time consumption, etc., and achieve the effect of short time consumption, easy risk control and low cost

Active Publication Date: 2014-04-16
NANJING HYDRAULIC RES INST
View PDF4 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is generally difficult to find a suitable test site for this type of test. Even if a suitable test site is found, a large amount of land and wat...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Earth-rock dam break centrifugal model test analysis method
  • Earth-rock dam break centrifugal model test analysis method
  • Earth-rock dam break centrifugal model test analysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The present invention will be further described below in conjunction with accompanying drawing:

[0049] (1) Centrifuge large flow water flow control system

[0050] Successfully developed the large-flow water flow control system of the centrifuge, which can provide 0.01-0.05m under the condition of high centrifugal acceleration of 100g 3 / s (the prototype is 100~500m 3 / s) flow test flow, the duration can reach 20min (33.3h for the prototype), and can be used for dam failure model tests of various dam types of earth-rock dams. (Has obtained national invention patent, patent number: 20110434073.8).

[0051] (2) A special model box for the earth-rock dam failure test has been developed, and the working schematic diagram of the model box is shown in figure 1 , figure 2 shown. The internal size of the model box is 1.2m×0.4m×0.8m. Compared with the ordinary centrifugal model box, the size in the longitudinal direction is enlarged to facilitate the layout of the downst...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

An earth-rock dam break centrifugal model test analysis method is characterized by comprising the following steps that (1) an earth-rock dam break test special model box is arranged; (2) the working principle and the stress similarity criterion of a centrifugal machine are used, an earth-rock dam prototype and a 1/N-contraction-scale centrifugal test model are obtained, under the Ng centrifugal acceleration condition, the linear size ratio of the model and the prototype is 1/N, and the earthing stress of the model and the prototype is the same; (3) according to the seepage similarity criterion, the obtained permeability coefficient of centrifugal model earth is N times of the permeability coefficient of prototype earth; (4) according to the shearing strength similarity criterion, the particle diameter of model cohesiveless earth-rock materials is reduced by N times; and (5) according to the water flow similarity criterion, the similarity criterion of commonly-used physical quantity in an earth-rock dam break centrifugal model test is obtained. The method is not limited or restricted by fields, a large amount of earth and a large number of water resources are of no need during testing, and the method has the advantages of being low in cost and short in time.

Description

technical field [0001] The invention belongs to the technical field of test theory, and in particular relates to an earth-rock dam break centrifugal model test analysis method, which is especially suitable for the experimental research on the break mechanism of the earth-rock dam, the development law of the break and the flow process of the dam break. Background technique [0002] At present, my country has built more than 98,000 reservoir dams and 100,000 kilometers of important embankments, most of which are earth-rock embankments. While these reservoir dams and embankments have brought us huge benefits, they also have the risk of collapse. Since 1954, 3,524 reservoir dams and many embankments have failed in my country, causing major loss of life and property and ecological and environmental disasters. For this reason, in recent years, a large number of experimental studies have been carried out on the dam break mechanism, break development law and dam break flood flow pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02B1/02
Inventor 陈生水徐光明顾行文钟启明傅华任强
Owner NANJING HYDRAULIC RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap