Bidirectional radial seepage instrument and using method thereof

A seepage and sealing ring technology, applied in instruments, scientific instruments, permeability/surface area analysis, etc., can solve the problems of affecting test accuracy, inconvenient discharge of soil sample gas, uneven soil sample state, etc., saving experimental time and saving Resources and investments, the effect of speeding up the experimental process

Pending Publication Date: 2019-08-27
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent search found that the application number is 201720773880.5, and the name is "a radial seepage experimental device for evaluating the radial seepage characteristics of soil". The gas in the sample; the water outlet is at the bottom, and the water seeping out of the soil sample may flow out quickly, making the upper and outer sides of the soil sample in an unsaturated state, resulting in an uneven state in the soil sample, which is different from the one to be simulated in the experiment. Affect the test accuracy

Method used

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  • Bidirectional radial seepage instrument and using method thereof
  • Bidirectional radial seepage instrument and using method thereof
  • Bidirectional radial seepage instrument and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The overall schematic diagram of this embodiment is shown in figure 1 , is a two-way radial seepage meter and its use method, the schematic diagram of the radial seepage meter components is shown in Figure 2-Figure 8. The radial seepage meter mainly includes a base, an outer sleeve 3, a permeable tube 4, an upper cover, a permeable rod 8, and a loading frame; there is a central water inlet 1a leading to the center of the upper surface of the base in the base, and a permeable tube located in the base. The annular water collection tank 1f below the water cylinder 4, the edge water inlet hole 1b is connected to the water collection tank 1f; the upper cover has a central drainage hole 9a leading to the center of the lower surface of the upper cover, and an edge drainage hole 9b connected to the top of the water permeable cylinder 4; The upper sealing ring 7 is located in the upper sealing ring groove 9c of the upper cover, and the lower side is in contact with the upper e...

Embodiment 2

[0055] The difference between this embodiment and Embodiment 1 is that different upper pads 13 are used, see for details Figure 9 . There is an annular airbag 10 on the periphery of the upper gasket 13, and the annular airbag 10 is filled with gas. During the experiment, between the upper gasket 13 and the upper cover, and between the upper gasket 13 and the upper end surface of the soil sample 5 are all airtight and watertight.

Embodiment 3

[0057] The difference between this embodiment and the second embodiment is that different upper pads 13 are used, see for details Figure 10 . There is a flat air bag 11 in the upper gasket 13, and it is filled with gas. During the experiment, between the upper gasket 13 and the upper cover, and between the upper gasket 13 and the upper end surface of the soil sample 5 are all airtight and watertight.

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Abstract

The invention discloses a bidirectional radial seepage instrument and a using method thereof, and belongs to the field of geotechnical experiments. The bidirectional radial seepage instrument can be used for the radial seepage experiments from the center to the periphery and can also be used for the radial seepage experiments from the periphery to the center, and mainly comprises a combination ofa base, an outer sleeve and a water-permeable cylinder, an upper cover and a loading frame. The radial seepage instrument is internally provided with a lower gasket, a soil sample and an upper gasketin sequence from bottom to top. The soil sample takes the shape of a circular column and a water-permeable rod is inserted into the hole. The radial seepage instrument is internally provided with twomain water channels flowing through the center and the periphery of the soil sample to control the inflow and drainage of the water channels, so that the water of one water channel can penetrate intothe other water channel along different radial directions of the soil sample, so as to flow into a water quantity measurement container. The bidirectional radial seepage instrument is convenient to discharge the internal gas of the instrument as soon as possible in the initial stage of the experiment, few in component and dual-purpose, and is capable of saving the resources and time.

Description

technical field [0001] The invention relates to the field of geotechnical experiments, in particular to a two-way radial seepage meter and a use method thereof. Background technique [0002] The permeability of soil is one of the basic engineering characteristics of soil, one of the indicators that must be measured in soil engineering research, and the basis for analyzing the seepage calculation of dams and groundwater seepage. There are three ways of penetration of soil samples: vertical, transverse and radial. The one-dimensional vertical and horizontal permeability test methods and equipment are relatively mature, but the current experiments for the measurement of soil permeability and radial permeability coefficient under radial seepage conditions are not mature, and there is no more targeted experimental method and experimental equipment. The patent search found that the application number is 201720773880.5, and the name is "a radial seepage experimental device for ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 魏建东刘忠玉
Owner ZHENGZHOU UNIV
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