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Method for screening rock sample by measuring fixed porosity

A technology of porosity and rock samples, which is applied in the field of screening rock samples by measuring fixed porosity, can solve the problems of not being able to simply and intuitively reflect the difference in rock sample porosity, large differences, inaccuracy, etc., and achieve the cost of screening and testing Low cost, high discrimination, and simple detection method

Active Publication Date: 2014-01-15
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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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, electric hair dryer, radius measurement litmus paper.

[0025] 2. Measurement steps:

[0026] 1. Use a thermometer to measure the indoor temperature and use an air conditioner to adjust the temperature to an appropriate temperature. Generally, the indoor temperature is 20°C-23°C, and a hygrometer is used to measure the indoor humidity. Air humidifier and lime are used to adjust the humidity in the appropriate range.

[0027] 2. Take a number of rock samples to be tested, gently grind the surface to be titrated with a whetstone, so that no obvious unevenness is observed, then blow off surface debris with a hair dryer, and select the upper and lower end faces of the rock sample at the titration point. In one place, choose 3-4 points on the side, such as figure 1 Shown in a, ...

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Abstract

The invention discloses a method for screening rock samples by measuring fixed porosities. The method comprises the following steps: dropping a titrant on different end surfaces of the rock samples, and measuring thetitration time and the sizes of the titration patterns, so as to screen the rock samples of different porosities. The method is of nondestructive testing, the samples do not need to be damaged in the screening process, multi-point testing on the rock samples can be carried out, the properties of the rock samples are comprehensively reflected, the screening and testing cost is low, no instruments and tools with high costs are needed, the testing method is simple, and particularly the testing result of rock with large porosity difference is visual in representation and high in discrimination degree.

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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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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