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Device and method for fast determining various sandy soil seepage coefficients

A rapid determination and permeability coefficient technology, applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc., to achieve the effect of simple operation, high efficiency and short time

Pending Publication Date: 2018-06-22
ZHEJIANG UNIV
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Problems solved by technology

For avoiding seepage damage such as flowing soil in engineering construction, anti-seepage of tunnel lining and prediction of settlement, it is necessary to know the permeability coefficient of soil and measure the permeability coefficient of soil, so as to guide the design and operation of underground engineering. Construction, the existing indoor device for measuring the permeability coefficient of sand and soil can only measure one soil sample at a time, and it is a problem to be solved to quickly measure the permeability coefficient of various sand and soil at one time

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  • Device and method for fast determining various sandy soil seepage coefficients
  • Device and method for fast determining various sandy soil seepage coefficients

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Embodiment Construction

[0022] Such as figure 1 As shown, a device for quickly measuring various sandy soil permeability coefficients includes a seepage system and an image acquisition system. The seepage system includes a plexiglass cylinder 19, and the plexiglass cylinder 19 is horizontally installed with an upper The second permeable stone 15 and the first permeable stone 7 located at the bottom; the first permeable stone 7 and the second permeable stone 15 are used to allow water to pass through but not soil particles; the bottom of the first permeable stone 7 is filled with gravel 8; Between the second permeable stone 15 and the first permeable stone 7, there are multiple layers of sandy soil samples (4 layers in the figure); and a plurality of piezometric tubes, the number of piezometric tubes is the same as the number of layers of the sandy soil sample, and they are respectively arranged at the interface of each layer of sandy soil sample and at the interface between the bottom layer of sandy ...

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Abstract

The invention discloses a device and a method for fast determining various sandy soil seepage coefficients. The device comprises a seepage system and an image collection system, wherein the seepage system comprises an organic glass round tube; multilayer sandy soil samples are laid in the organic glass round tube; a pressure measuring pipe is connected onto the bottom of each layer of soil sample;the image collecting system comprises a detector used for tracking rays released by radioactive isotope in the organic glass round tube. The seepage speed of each layer is obtained by an isotopic tracing method; through the pressure measuring pipe, the head loss of each layer is obtained; the seepage coefficient of various sandy soil samples can be fast determined in one step; the time is short;the efficiency is high.

Description

technical field [0001] The invention relates to a device and a method for quickly measuring the permeability coefficients of various sandy soils, which belong to the related field of geotechnical engineering. Background technique [0002] The seepage problem is one of the very important basic problems in geotechnical engineering. Many foundation pits, tunnels and other projects are inseparable from the influence of groundwater, and many accidents are also caused by the seepage of water in the soil. For avoiding seepage damage such as flowing soil in engineering construction, anti-seepage of tunnel lining and prediction of settlement, it is necessary to know the permeability coefficient of soil and measure the permeability coefficient of soil, so as to guide the design and operation of underground engineering. Construction, the existing indoor devices for measuring the permeability coefficient of sand and soil can only measure one soil sample at a time, and it is a problem to...

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08G01N15/0826G01N2015/0813G01N15/0806G01N15/082
Inventor 张天骄周建甘淇匀徐杰
Owner ZHEJIANG UNIV
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