Measuring method for coal rock capillary water absorption amount

A measurement method and water absorption technology, which is applied in the direction of measuring devices, material absorption weighing, instruments, etc., can solve problems such as limited data, waste of manpower, and influence on experimental results

Pending Publication Date: 2016-12-14
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

[0003] The traditional measurement of water absorption of coal and rock requires constant wiping of the specimen, which will damage the specimen and affect the experimental results
This kind of experiment generally lasts for 48 hours, and someone needs to continuously take the sample out of the water and weigh it, and the data obtained is limited, that is, there are

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  • Measuring method for coal rock capillary water absorption amount
  • Measuring method for coal rock capillary water absorption amount

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Example Embodiment

[0022] The method of the present invention will be further described in detail below with reference to the drawings and specific implementation cases.

[0023] Such as figure 1 As shown, a coal rock capillary water absorption measurement system, the high-speed acquisition instrument 1 is a HIOKI 8842T storage recorder. The height of the bracket 2 is 610 mm. The weighing sensor 3 has a range of 0-1kg. The sample 4 is a coal block with a diameter of 50.10 mm and a height of 65.23 mm. The container 5 is a 1000 ml beaker. The constant current source 6 can provide a DC 24V voltage. The method for measuring water absorption by coal and rock includes the following steps:

[0024] Step 1: Grind the coal sample to clear the surface contaminants;

[0025] Step 2: Tie the coal to the load cell, fix the load cell on the bracket, hang the test piece in the middle of a 1000ml beaker, connect the load cell to a constant current source, and make the constant current source provide a DC 24V volt...

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Abstract

The invention discloses a measuring method for a coal rock capillary water absorption amount. A measuring system for the coal rock capillary water absorption amount comprises a container, a test sample, a high-speed acquisition instrument, a constant flow source, a support and a weighing sensor. The method comprises the main steps that the weighing sensor is used for converting weight changes in the coal rock water absorption process into electric signals, and an experiment result is obtained through acquisition and processing of the high-speed acquisition instrument; during the experiment, the weighing sensor is fixed to the support, the test sample is tired below the weighing sensor, then, the system is powered on, a data acquisition system is connected, a water submerging test sample is added into the container, and the experiment can be started. Compared with traditional methods, the method is more accurate, saves labor, and can obtain a large amount of data conveniently so that the obtained conclusion is more accurate.

Description

technical field [0001] The invention belongs to a new test method for the water absorption experiment of coal rock, in particular to a novel device for measuring the water absorption amount of coal rock. Background technique [0002] At present, the effect of water on coal and rock has great application in engineering, so it is necessary to continue to study the properties and characteristics of coal and rock in the process of water absorption, and it is of great significance to find a more convenient and accurate method. [0003] The traditional measurement of water absorption of coal and rock requires constant wiping of the specimen, which will damage the specimen and affect the experimental results. This kind of experiment generally lasts for 48 hours, and someone needs to continuously take the sample out of the water and weigh it, and the data obtained is limited, that is, there are shortcomings of human waste and insufficient experimental data. The existing method of w...

Claims

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Application Information

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IPC IPC(8): G01N5/02
CPCG01N5/025
Inventor 解北京杨潘
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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