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Salt lake salt mine layer porosity and specific yield sample field test method

A technology for on-site testing and porosity, applied in the direction of measuring devices, suspension and porous material analysis, instruments, etc., to achieve the effect of simple testing methods and high accuracy

Pending Publication Date: 2021-11-02
青海云天无人机科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the embodiment of the present invention hopes to provide an on-site test method for porosity and water supply parameters of salt lake salt mine layer pore sample, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option

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  • Salt lake salt mine layer porosity and specific yield sample field test method
  • Salt lake salt mine layer porosity and specific yield sample field test method

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Experimental program
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Embodiment 1

[0051] Such as Figure 1-2 As shown, the embodiment of the present invention provides a kind of on-the-spot testing method of porosity and water supply rate sample of salt lake salt mine, comprising the following steps:

[0052] S1. Hole sample collection:

[0053] During the exploration and drilling of salt lakes, 10-15 cm undisturbed and complete cores were collected from the cores of the drilled salt deposits as hole-to-give samples. The on-site laboratory tests the parameters of weight (ie density), humidity, porosity, and water supply, and cuts a part of the sample from the sample to test each parameter separately.

[0054] S2, sample weight (ie density), humidity test:

[0055] 1) Body weight (ie density) test

[0056] Generally, the plastic sealing drainage method (sealed with a plastic bag and then evacuated) is used for determination in the field, and the volume of the cut sample is generally 60-120 cm 3 .

[0057] First, weigh the wet weight of the sample with a...

experiment example

[0084] Take a columnar pore sample of a halite layer in a salt lake, remove the powder debris on the columnar pore sample, and then use a vacuum pump to evacuate the adsorbed water in the sample, put it on an electronic balance, and weigh its wet weight as 261g before drying , after the sample is airtight and plastic-sealed, pour water into the measuring cup, and record the volume as 300Cm 3 , and then submerge the sample into the brine of the container, and measure the volume of overflowing brine to be 145Cm 3 , which is the volume of the sample 145Cm 3 The dry weight of the sample after 48 hours of low-temperature drying at 45°C in an oven is 245g.

[0085] The sample weight is 1.80g / m 3 , the sample humidity is 6.13%;

[0086] Pour the water into the measuring cup and record the volume as 300cm 3 , cut a piece of sample, pack it in a plastic vacuum bag and then vacuum it, then place the vacuum-packed sample in a measuring cup of brine, and record the volume of overflowi...

experiment example 2

[0092] The present invention also provides a kind of experimental example adopting the method of the present invention to test ore water supply and porosity:

[0093] Take a columnar pore sample of a halite layer in a salt lake, remove the powder debris on the columnar pore sample, and then use a vacuum pump to evacuate the adsorbed water in the sample, put it on an electronic balance, and weigh its wet weight as 280g before drying , after the sample is airtight and plastic-sealed, pour water into the measuring cup, and record the volume as 300Cm 3 , and then submerge the sample into the brine of the container, and measure the volume of overflowing brine to be 150Cm 3 , which is the volume of the sample 150Cm 3 ; Put the sample into an oven and dry it at a low temperature of 45°C for 48 hours, and the dry weight of the sample is 265g.

[0094] The sample weight is 1.87g / m 3 , the sample humidity is 5.36%;

[0095] Pour the water into the measuring cup and record the volume...

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Abstract

The invention provides a salt lake salt mine layer porosity and specific yield sample field test method. The method comprises the following steps: S1, collecting a pore-feeding sample; S2, testing the weight and humidity of the sample; S3, testing the porosity; S4, testing the specific yield. According to the method, the porosity and the specific yield of a salt lake and salt mine layer are tested on site, a test device is light, the test method is simple, the test speed is high, exploration site operation is facilitated, and a test result is rapidly obtained. Compared with a situation that a test result is inaccurate due to the fact that a dryer is used for drying moisture in a sample at high temperature and salt mine crystal water is dried away in the prior art, a vacuum pump is used for evacuating adsorbed water in pores of the sample, and the situation that the test result is inaccurate due to the fact that the salt mine crystal water is dried is avoided; the method is simple in test operation and high in result accuracy, and test parameters accord with an actual ore bed.

Description

technical field [0001] The invention relates to the technical field of testing the porosity and water supply of salt lake layers, in particular to an on-site testing method for samples of the porosity and water supply of salt lake salt layers. Background technique [0002] The water supply is the ratio of the amount of water discharged by the saturated soil or rock formation under the action of gravity to the volume of the soil or rock formation. Numerically it is equal to porosity minus water holdup. [0003] Porosity refers to the sum of ventilating pores and water-holding pores in the matrix, expressed as a percentage of the pore volume in the total volume of the matrix. [0004] Existing methods for testing the porosity and water supply of salt deposits in salt lakes are carried out in laboratories. Generally, kerosene is used as a reagent, and brine is also used. water supply, and then use the water holdup and water supply to inversely calculate the porosity. Some sa...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N23/00
CPCG01N15/08G01N23/00
Inventor 覃功平王树龙宋熙鹏马学强曹正伟
Owner 青海云天无人机科技有限公司
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