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Method for screening rock sample by measuring fixed porosity

A porosity and rock sample technology, applied in the field of screening rock samples by measuring constant porosity, can solve problems such as large differences, inaccuracy, and inability to simply and intuitively reflect the differences in rock sample porosity, and achieve a high degree of discrimination. , the detection method is simple, and the screening and detection cost is low.

Active Publication Date: 2015-07-01
泰州市海通资产管理有限公司
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Problems solved by technology

At present, the non-destructive testing of rock samples mainly adopts ultrasonic testing, acoustic emission, etc., but these methods cannot simply and intuitively reflect the difference in porosity of rock samples. Tests to determine the porosity of some rock samples to infer the porosity of the remaining rock samples
However, as a large discrete material, rock is not accurate in this way, and may even have great differences. How to ensure that the rock sample is free from physical and chemical damage during the screening process, and can continue to be used in other experiments after screening In the project, it is a problem that needs to be solved at present

Method used

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  • Method for screening rock sample by measuring fixed porosity
  • Method for screening rock sample by measuring fixed porosity
  • Method for screening rock sample by measuring fixed porosity

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Experimental program
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Embodiment

[0024] 1. Preparation of testing equipment: thermometer, hygrometer, lime, timer, capillary dropper, microliter syringe, red pigment, purified water, titration fixture, beaker, rock sample to be tested, whetstone, hair dryer, radius measurement litmus paper.

[0025] 2. Determination steps:

[0026] 1. Use a thermometer to measure the indoor temperature and use the air conditioner to adjust the temperature to a suitable temperature. Generally, the indoor temperature is 20°C--23°C. At the same time, use a hygrometer to measure the indoor humidity, and use an air humidifier and lime to adjust the humidity within a suitable range.

[0027] 2. Take a number of rock samples to be tested and use a whetstone to gently smooth the surface to be titrated so that no obvious bumps can be observed, then blow off the surface debris with a hair dryer, and select the upper and lower end faces of the rock sample for the titration point. One place, choose 3-4 points on the side, such as figur...

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Abstract

The invention relates to a method for screening rock samples by measuring the porosity. The rock samples with different porosities can be screened out by dripping titration solution on different end faces of the rock samples, measuring the titration time and the size of the titration pattern. This method is a non-destructive testing method that does not need to destroy the sample during the screening process, and can perform multi-point testing on the rock sample to fully reflect the nature of the rock sample. The screening and testing cost is low, and no high-cost instruments and tools are required. The detection results of rock masses with large rate differences are very intuitive and highly distinguishable.

Description

technical field [0001] The invention relates to a method for screening rock samples by measuring fixed porosity. Background technique [0002] Many properties of rocks, such as strength, water absorption, fire resistance, frost resistance, thermal conductivity, sound absorption, etc., have a lot to do with the density of the rock structure. In addition to determining the size of the porosity, it is also related to the The structural characteristics (including pores, connectivity, and distribution) are closely related. In addition, the research shows that the porosity of the rock seriously affects the failure state of the pore disc model. When the porosity is small, the disc is mainly damaged by tension, and when the porosity increases, the combined failure mode of tension and shear appears. With the increase of porosity, the tensile strength of the disc model shows an exponential decreasing trend; with the decrease of the control parameters of pore size distribution, the di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
Inventor 刘杰唐亮李建林郭金龙
Owner 泰州市海通资产管理有限公司
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