A kind of multifunctional tubular sediment erosion test device and method

A scouring test, multi-functional technology, applied in the fields of water conservancy engineering, geology and civil engineering, can solve the problems of difficult implementation, the reliability of the test principle is not widely recognized, and the measurement error is large, and achieves strong practicability and high stability. And the effect of practical, measurable data

Active Publication Date: 2021-11-02
HOHAI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

However, jet erosion belongs to normal stress erosion, and the reliability of its test principle has not yet been widely recognized.
In addition, there are some devices and methods for sand erosion tests using closed pipe flow, but there are problems such as large measurement errors or difficult implementation.

Method used

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  • A kind of multifunctional tubular sediment erosion test device and method
  • A kind of multifunctional tubular sediment erosion test device and method
  • A kind of multifunctional tubular sediment erosion test device and method

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Experimental program
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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] A multi-functional tubular sediment erosion test device, including a piping system, a measuring system and a pushing system, such as figure 1 shown.

[0044] The pipeline system includes a water inlet pipe 3 , a rectifier 2 , a rectangular pipe 1 , a water tank 4 and a water outlet pipe 5 sequentially connected. The water inlet pipe 3 is connected to the Changshuitou reservoir in the laboratory, and the water outlet pipe 5 is connected to the laboratory sedimentation tank. The water inlet valve 6 is installed on the water inlet pipe 3, and the water outlet valve 7 is installed on the water outlet pipe 5. The rectangular pipe 1 An exhaust valve 8 is installed on the upper wall of the front end and the tail end respectively, and an exhaust valve 8 is installed on the upper wall of the water tank 4; the middle part of the rectangular pipe 1 is provided with a test...

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Abstract

The invention discloses a multifunctional tubular sediment erosion test device and method. The device includes three parts: a pipeline system, a measurement system and a push system, and has the advantages of simple structure, convenient operation, and the ability to quickly perform a large number of erosion tests ; The basic principle of the device is to carry out scour test through closed pipe flow, and can accurately measure the shear stress of the bed surface and simultaneously measure the scour rate, sediment transport rate of moving mass and sediment transport rate of suspended mass. The test device and method are not only suitable for non-cohesive sand, but also for cohesive sand; not only for remolded soil, but also for undisturbed soil, not only for the sand erosion test under general unidirectional flow conditions, but also for The sediment erosion test under seepage conditions has broad application prospects.

Description

technical field [0001] The invention relates to a multifunctional tubular sediment scour experiment device and method, belonging to the technical fields of water conservancy engineering, geology and civil engineering. Background technique [0002] Sediment erosion is the result of the strong interaction between water flow and bed sediment. When the bed shear stress caused by water flow is greater than the critical scouring shear stress (or starting shear stress) of the bed sediment, the bed sediment starts to move. Flushing occurs immediately. The scouring of sediment has an important impact on the normal work and structural safety of civil engineering, water conservancy, and offshore wading structures. For many years, soil erosion, slope instability, bridges, and offshore wind power collapse have been caused by sediment scouring across the country and even around the world. And submarine pipeline damage incidents occur from time to time. Because sticky sediment is easy to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 陈大可郑金海张弛管大为陈立华段渊译李元
Owner HOHAI UNIV
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