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Method and device for measuring disseminated parameter of solute migration

A technology for parameter determination and solute migration, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to measure the size effect of dispersion, low precision of measurement results, and low efficiency, so as to save labor costs and avoid man-made Error, efficiency and accuracy improvement effect

Inactive Publication Date: 2013-09-25
HOHAI UNIV
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Problems solved by technology

[0002] In the prior art, the commonly used indoor measurement method of dispersion parameters is determined by one-dimensional sand column experiment. Different water heads are set at both ends, and seepage is generated under the action of the water head difference. When the seepage is stable, a certain concentration of solution is applied to one end of the piping, and the concentration of the outflowing solution is measured at the other end of the piping at regular intervals. The solute dispersibility can be deduced from the curve relationship of concentration versus time. Therefore, when using this method to measure the solute dispersibility, only one concentration-time curve can be obtained in the first experiment, which is not efficient, and has a great influence on the dispersibility. The size effect cannot be measured; in addition, the method of manual sampling measurement is generally used in the measurement of solution concentration, the workload is relatively large, and the accuracy of the measurement results is not high due to human factors

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  • Method and device for measuring disseminated parameter of solute migration
  • Method and device for measuring disseminated parameter of solute migration
  • Method and device for measuring disseminated parameter of solute migration

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Embodiment Construction

[0027] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] Such as figure 1 As shown, the method for measuring the dispersibility parameter of solute transport in the present invention specifically includes the following steps: (1) prepare the soil sample, and set a certain water head difference on both sides of the soil sample to form a one-dimensional seepage flow. Invented a water circulation system to maintain a suitable seepage water head difference. Specifically, the water circulation system is realized in the following way: the water in the water storage tank is continuously injected into the water tank by using a water pump, and the water higher than the preset water head passes through The water inlet balance conduit is discharged into the water tank, and the circulation of the experimental water; (2) inject tracer in the seepage upstream of the soil sample, and the tracer used in t...

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Abstract

The invention relates to a method and a device for measuring a disseminated parameter of solute migration. In the method, more than two detecting probes used for reflecting the concentration change of a tracer which is arranged at the upper course of a seepage flow are embedded into the middle of an earth mass sample which generates a one-dimension seepage flow at intervals, and then the corresponding concentration of the tracer is obtained by utilizing the relation between data detected by the tracer and the concentration of the tracer so as to obtain more than two groups of concentration-time change curves under the condition of a same experiment, i.e. the disseminated parameter of the solute migration during a whole one-dimension seepage flow process can be obtained, thus, compared with a prior one-dimension sand column experiment, the invention not only enhances the experiment efficiency, but also effectively avoids the size effect of the one-dimension sand column experiment.

Description

technical field [0001] The invention relates to a method and a measuring device for measuring the dispersion of organic or inorganic solutes during one-dimensional migration in soil, and belongs to the technical field of measuring methods and measuring devices for the dispersion of solutes. Background technique [0002] In the prior art, the commonly used indoor measurement method of dispersion parameters is determined by one-dimensional sand column experiment. Different water heads are set at both ends, and seepage is generated under the action of the water head difference. When the seepage is stable, a certain concentration of solution is applied to one end of the piping, and the concentration of the outflowing solution is measured at the other end of the piping at regular intervals. The solute dispersibility can be deduced from the curve relationship of concentration versus time. Therefore, when using this method to measure the solute dispersibility, only one concentratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00G01N27/06
Inventor 陈亮梁越陈建生
Owner HOHAI UNIV
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