Full-automatic coal rock gas desorption and resistivity measurement device

Abstract

The invention discloses a full-automatic coal rock gas desorption and resistivity measurement device. The device comprises a first box body, a coal rock test part is arranged in the first box body; two copper sheets are symmetrically and fixedly connected to the two ends of the coal rock test part, a resistivity measuring instrument is arranged outside the first box body, the sides, away from thecoal rock test part, of the copper sheets are electrically connected to the electrical input end of the resistivity measuring instrument through first wires, and one side of the first box body communicates with a first pipe body. According to the invention, resistivity measurement is carried out by using the resistivity measuring instrument; the gas desorber is used for carrying out desorption treatment on the gas; and then a conclusion can be obtained through comprehensive analysis of data, the gas can be purified through the filter screen plate, sterilization treatment is conducted through cooperation of the ultraviolet lamp plate and the photocatalyst plate, further purification treatment can be conducted on the gas through the activated carbon plate, and it is avoided that experimenters breathe harmful gas in the experiment process.

Description

Technical field [0001] The invention relates to the technical field of resistivity measurement, in particular to a fully automatic coal and rock gas desorption and resistivity measurement device. Background technique [0002] In coal mining, it is easy to destroy the balance between coal and rock gas pressure and coal and rock common stress, and coal and gas outburst accidents are extremely easy to occur. The law of coal and rock gas desorption can be used to determine the coal seam gas content and reflect the risk of coal and gas outbursts. However, direct measurement of coal and rock gas desorption is prone to large errors. However, the existence of coal and rock gas often changes the resistivity of coal and rock. Many scholars Do a lot of research work on coal and rock electrical parameters, accurately determine and analyze the relationship between coal and rock gas adsorption and desorption content and coal rock resistivity, which is an important basis for evaluating the pred...

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Problems solved by technology

The gas desorption law of coal rocks can be used to determine the gas content of coal seams and reflect the risk of coal and gas outburst. However, direct measurement of coal rock gas desorption is prone to large errors. However, the existence of coal rock gas often changes the coal rock resistivity. Many scholars A lot of research work has been done on the electrical parameters of coal and rock, and the accurate measurement and analysis of the relationship between the gas adsorption and desorption content of coal and rock and the resistivity of coal and rock is an important basis for evaluating the prediction of gas emission and gas outburst in coal mining face. It is also an important basic parameter for controlling coal and gas outburst accidents;

[0003] The Chinese patent "A resistance measuring device for a coal sample gas desorption instrument" patent number CN 203672816U discloses a resistance measuring device for a coal sample gas desorption instrument, including a coal sample tank, a desorption measuring tube, a main control unit and a power supply. The device reads the gas desorption content at different times by reading the desorption volumetric tube, which often takes 48 to 72 hours or even longer for gas desorption, which not only wastes a lot of manpower and material resources, but also has large errors in manual readings; the Chinese patent "A Fully Automatic Coal Rock Gas Desorption and Resistivity Measuring Device" Patent No. CN201820384247.1, which discloses a resistivity measuring device in the process of coal rock desorption, which can measure the resistivity of coal rock gas desorption by using the device, but During the measurement process, the gas treatment is not safe enough, there is a risk of leakage, and the lack of gas treatment devices makes it easy to cause adverse effects on the human body during the experiment. In addition, the existing coal and rock gas desorption gas suction and During the simultaneous measurement of the resistance of the coal-rock specimen, the distribution uniformity of the coal-rock gas desorption gas, the selection of the gas absorption position, and the different contact positions of the metal electrodes of the coal-rock specimen will affect the final result. A fully automatic coal-rock gas desorption and resistivity measurement device

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