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Scouring model experimental device of underground silt and method

A model experiment, sediment technology, applied in the direction of measuring device, particle and settlement analysis, fluid dynamics test, etc., to achieve the effect of clear principle, simple structure and convenient operation

Inactive Publication Date: 2010-03-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the field of underground sediment erosion, there is currently no relevant underground sediment erosion model experimental device and method for directly measuring the void ratio, particle gradation and distribution under a certain erosion state at home and abroad.

Method used

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  • Scouring model experimental device of underground silt and method
  • Scouring model experimental device of underground silt and method
  • Scouring model experimental device of underground silt and method

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Embodiment Construction

[0036] The present invention provides an underground sediment scouring model experiment device and method. The specific implementation of the present invention will be described below in conjunction with the accompanying drawings of the embodiments.

[0037] Such as figure 1 and figure 2 As shown, the device consists of a flushing box, a fixed table 201, a tilting device and a freezer.

[0038] The scour box is used to hold soil samples or sand samples, and the scour model experiment of underground sediment is carried out in this box. The lower plate 1012 of the box is fixed on the fixed platform 201 with the lower plate fixing bolts 202, and the two side plates 102 and the left and right two baffle plates 103 are fixed together with the surrounding plate fixing bolts 1061, and the upper plate 1011 and the lower plate 1012 are connected with the two The side plate 102 and the left and right baffle plates 103 form a scour box, and are fixed on the fixed platform 201 by the u...

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Abstract

The invention relates to scouring model experimental device of underground silt and method, which belong to the technical field of characteristic tests of hydraulics, river dynamics and soil and rockmechanics. The device comprises a scouring tank, a fixing table, a tilting device and a freezing tank. The method comprises the following steps: putting or stacking experimental soil samples or sand samples in the scouring tank; closing the scouring tank; starting a water flow for scouring the underground silt in a model experiment; shooting and recording a scouring process; closing the water flowand maintaining original water pressure when the scouring reaches a certain experimental state; then, freezing the scouring tank and the scouring samples by the freezing tank; labeling, positioning and cutting frozen scouring sample grids; and individually measuring, thawing, weighing and screening second-state frozen small samples to obtain the graduation of scouring models of the underground silt and the distribution of porosity in a scouring state. The scouring model experiment of the underground silt is carried out in a laboratory. The invention provides a reference and a theory for mutually stacking the silt, damming by sand stone and banking for preventing flood for river ways and is applied to the laboratory research of scouring the underground silt.

Description

technical field [0001] The invention belongs to the technical field of testing hydraulics, river dynamics and rock-soil mechanics characteristics, and in particular relates to an underground sediment erosion model experiment device and method. Background technique [0002] The field of sediment research has shifted from river channels to land, that is, river sediment has developed into river basin sediment, which is a great leap for researchers in sediment research. The sediment in the river comes from the bottom and sides of the river on the one hand, and from the land surface on the other hand, which is the content of the river basin sediment study. Sediment also has an important source - the interior of embankments and land, that is, the sediment from the ground, which is called underground sediment. The research on underground sediment belongs to a new field. The specific engineering performance in this field is: the decrease of embankment stability and collapse caused ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N3/00G01N15/02G01N15/08G01M10/00
Inventor 王光谦孙即超傅旭东魏加华吴保生
Owner TSINGHUA UNIV
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