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Haplopore dilution method for determining seepage direction by electrical conductivity

A conductivity and dilution technique, applied in measurement devices, fluid resistance measurement, velocity/acceleration/impact measurement, etc., can solve problems such as radioactive accidents, and achieve simple, convenient and safe measurement process, clear principle, simple and reliable operation Effect

Active Publication Date: 2010-06-02
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The isotope single-well dilution test is a radioactive operation during the tracer injection process, and radioactive accidents are prone to occur in the storage, on-site injection, protection, testing, and cooperation of auxiliary personnel.

Method used

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  • Haplopore dilution method for determining seepage direction by electrical conductivity
  • Haplopore dilution method for determining seepage direction by electrical conductivity
  • Haplopore dilution method for determining seepage direction by electrical conductivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The single-hole dilution method for measuring the conductivity of the seepage direction includes: selecting the location of the hole and drilling a hole; selecting a tracer according to the conductivity of the drilled water on site;

[0035] The above selection of the measuring hole position and drilling is to select the geological stability in the area to be measured, and drill hole 2 at the position without broken zone, and the hole depth is below the position of 1, see figure 1 , built-in filter tube 3 in the measuring hole;

[0036] The outside of the above-mentioned filter pipe is a gravel layer 4 .

[0037] The conductivity value of the above-mentioned on-site borehole water body measurement is 0.53ms / cm, which belongs to low conductivity water body, and the strong electrolyte KCl solution is selected as the tracer.

[0038] The above-mentioned method of measuring the seepage direction by using the analysis technique of adsorbed tracer sand body is to use 2mol / l ...

Embodiment 2

[0043] The single-hole dilution method for measuring the conductivity of the seepage direction includes: selecting the location of the hole and drilling; selecting a tracer according to the conductivity of the drilled water on site;

[0044] The above selection of the measuring hole position and drilling is to select the geological stability in the area to be measured, and drill hole 2 at the position without broken zone, and the hole depth is below the position of 1, see figure 1 , built-in filter tube 3 in the measuring hole;

[0045] The outside of the above-mentioned filter pipe is a gravel layer 4 .

[0046]The conductivity value of the above-mentioned on-site borehole water measurement is 0.5ms / cm, which belongs to low conductivity water, and the strong electrolyte KCl solution is selected as the tracer.

[0047] The above-mentioned method of measuring the seepage direction by using the analysis technique of adsorbed tracer sand body is to use 2mol / l KCl solution, filte...

Embodiment 3

[0052] The single-hole dilution method for measuring the conductivity of the seepage direction includes: selecting the location of the hole and drilling a hole; selecting a tracer according to the conductivity of the drilled water on site;

[0053] The above selection of the measuring hole position and drilling is to select the geological stability in the area to be measured, and drill hole 2 at the position without broken zone, and the hole depth is below the position of 1, see figure 1 , built-in filter tube 3 in the measuring hole;

[0054] The outside of the above-mentioned filter pipe is a gravel layer 4 .

[0055] The conductivity value of the above-mentioned on-site borehole water body measurement is 16.4ms / cm, which belongs to high conductivity water body, and deionized water is selected as the tracer.

[0056] The above-mentioned method of measuring the seepage direction by using the analytical technique adsorbed on the tracer sand body is to drain the tracer sand so...

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Abstract

The invention discloses a haplopore dilution method for determining the seepage direction by electrical conductivity, belonging to the field of seepage and underground water movement observation. The method comprises the steps of measuring hole positions and drilling holes, selecting a tracer according to the difference of the electrical conductivities of field drilling water bodies and determining the seepage direction by using an analytic technology for adsorbing a tracer sand body. The method has simple, convenient and reliable operation; the tracer is selected from a nontoxic strong electrolyte solution or a deionized water solution; in addition, with clear and definite principle, the invention has simple, convenient and safe measuring process, correct and reliable result, environmental protection and safety and can completely replace the traditional method for determining the flow direction of radioactive haplopore.

Description

technical field [0001] The invention discloses a conductivity single-hole dilution method for measuring the seepage direction, which relates to the measurement of groundwater movement by a tracer dilution method, in particular a method for calculating the seepage direction by measuring changes in conductivity, which belongs to the field of seepage and groundwater movement observation. Background technique [0002] The principle of the tracer dilution method to measure flow rate was first proposed by Kocherin. The basic principle is that in a vertically exposed aquifer, the aquifer is isolated with a plug, and then a certain tracer is used to mark the groundwater, and the water body Mix evenly, the concentration of the tracer will decrease continuously with the water flow, and the tracer concentration before and after the section of the water column is measured twice with the probe, and the infiltration flow rate of the aquifer can be calculated. Later, the method was gradual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P13/00G01R27/22
Inventor 郭永彬沈杰程和森曹更新王守家魏明成
Owner NANJING HYDRAULIC RES INST
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