Method for testing anti-re-alkali performance of spray material for coal mine roadway

A technology of coal mine roadway and testing method, which is applied to a measuring device, removes certain components for weighing, and measures directions such as ultrasonic/sonic/infrasonic waves, which can solve the problem of inability to accurately judge the anti-alkalinity performance of sprayed materials, and achieve accurate Improve and reduce impact

Inactive Publication Date: 2020-09-04
陕西拉发纪新材料科技有限公司 +1
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Problems solved by technology

[0005] The invention provides a method for testing the anti-alkali performance of spray materials used in coal mine roadways t...

Method used

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  • Method for testing anti-re-alkali performance of spray material for coal mine roadway
  • Method for testing anti-re-alkali performance of spray material for coal mine roadway
  • Method for testing anti-re-alkali performance of spray material for coal mine roadway

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Embodiment Construction

[0025] The following is further described in detail through specific implementation methods:

[0026] The reference numerals in the drawings of the specification include: a tube furnace 10 , a heating platform 11 , a water tank 12 , an air inlet pipe 13 , and an exhaust pipe 14 .

[0027] A method for testing the anti-alkali performance of spray materials for coal mine roadways. The test object is a spray material for coal mine roadways. The spray materials include 50-100 parts by weight of borax, 150-500 parts of Spraying material, 100-300 parts of fly ash and 100-200 parts of crushed stone and cinder, the special anti-foaming thickener YR-910 is also added to the spraying material, and the mass of the thickener accounts for 0.5-20% of the total mass of the spraying material. 2%.

[0028] The components and test parameters of Examples 1-6 of the test method are shown in Table 1 and Table 2.

[0029] Table 1 shows the parameters of spraying materials used in coal mine roadwa...

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Abstract

The invention relates to the technical field of coal mine material testing, and particularly discloses an anti-re-alkali performance testing method of a spraying material for a coal mine roadway, which comprises the following steps: 1, spraying the uniformly stirred spraying material on the surface of concrete to solidify to obtain a sample, weighing the sample, and putting the sample into a testing device; and 2, introducing a mixed gas of carbon dioxide, oxygen and water into the testing device, controlling the flow rate of the gas flow to be 80-200ml/min, controlling the testing time to be30-100 days, and weighing the sample after the testing is finished. According to the testing method, the temperature and the mixed gas ratio in the test are adjusted; the environment conditions of different depth positions of the coal mine vertical shaft can be effectively simulated, so that the anti-alkali-efflorescence performance results of the spray material in different environments are obtained, the component proportion of the spray material is better adjusted according to the results, and the spray material with the most excellent anti-alkali-efflorescence performance in the environmentis obtained.

Description

technical field [0001] The invention relates to the technical field of coal mine material testing, in particular to a method for testing the anti-rebase performance of spray materials used in coal mine roadways. Background technique [0002] Coal mines are one of the most utilized resources in my country. The mining of coal mines is mainly shaft mining and open-pit mining. Open-pit mining does not need to build shafts, but it has a greater impact on the environment and is easy to pollute the environment; while coal mining deep underground requires the construction of shafts to For the entry and exit of laborers and coal mine resources, and the coal mined by vertical shaft coal mines accounts for most of the coal mines consumed in my country, so the construction of vertical shafts is the top priority. Spray materials with special properties are usually used for the construction of the surface of coal mine shafts, so as to meet its characteristics of high strength, corrosion re...

Claims

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Application Information

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IPC IPC(8): G01N5/04G01H17/00
CPCG01N5/04G01H17/00
Inventor 冯晶陈琳汪俊张益欣常雅
Owner 陕西拉发纪新材料科技有限公司
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