Apparatus and method for testing designability of underground water sample and coal sample in pressurizing process

A testing device and structural technology, applied in the direction of material resistance, etc., can solve the problems of inability to exclude false abnormal bodies and inaccurate data, and achieve the effect of ensuring long-term safety

Active Publication Date: 2017-11-10
TAIYUAN UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

According to the data obtained through the above-mentioned various technical means, according to the comparison between the measured data and the actual situation in the underground, there are still many inaccurate data, and there are cases where false anomalies cannot be ruled out.

Method used

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  • Apparatus and method for testing designability of underground water sample and coal sample in pressurizing process
  • Apparatus and method for testing designability of underground water sample and coal sample in pressurizing process
  • Apparatus and method for testing designability of underground water sample and coal sample in pressurizing process

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Embodiment Construction

[0026] The present invention is further illustrated by the following examples, but not limited to the following examples.

[0027] The present invention relates to a device and method for testing the structural properties of water and coal in underground highly pressurized water and coal seams during the pressurization process. Such as Figure 1~3 As shown, the calibration tank 1 is made of high-strength insulating and heat-resistant plastic into a cylinder (Φ55mm*400mm);

[0028] The top of the calibration tank 1 is designed with a detachable pressurized piston 2 that slides freely up and down. The loading system exerts vertical pressure on the underground coal seam structure; two U-shaped grooves are set at the contact between the pressurized piston 2 and the tank 1 , embedded with an annular sealing ring 6; such as Figure 4 As shown, eight reserved through-holes 4 are provided on the pressurizing piston 2, which are arranged in a circular direction at intervals of 45°, a...

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Abstract

The invention discloses an apparatus and a method for testing the designability of an underground water sample and a coal sample in a pressurizing process. The apparatus comprises a calibrating tank, a pressurizing piston arranged at the upper end of the calibrating tank, a rapid heating device connected with the calibrating tank and a measuring device arranged in the calibrating tank; and the measuring device comprises a pressure test tube, circumferential resistivity test electrodes, vertical resistivity test electrodes, an automatic data acquirer and a resistivity acquirer. The test electrodes are used to obtain the resistivity of the samples in order to obtain the data of the vertical resistivity and the transverse resistivity of the coal sample and the water sample with the pressure under different working conditions, the internal relation of all groups of the data is analyzed, and a characteristic curve of the resistivity and the pressure is drawn. The apparatus and the method provide analysis data for the elimination of underground false anomalies, and play a great role in ensuring the long-term safety of underground engineering structures.

Description

technical field [0001] The invention relates to a structural testing device and method for underground water and coal samples during pressurization, and belongs to the technical field of mining engineering. Background technique [0002] In recent years, with the increase of mining depth, mine water damage has become one of the main threats restricting the safe production of coal mines. Coupled with the disorderly mining of small coal mines in the early days, many old empty areas were formed, and the resulting water accumulation in the old empty areas posed a great security threat to mining. In addition, the hydrogeological conditions of the mine are complex, and fissure water and fracture water also pose a threat to the safe production of coal mines. In response to this water hazard problem, some coal mines have been using drilling or tunneling methods to detect and discharge water, but it is difficult to eliminate the flood with only "one hole, one lane view", and the effi...

Claims

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Application Information

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IPC IPC(8): G01N27/04
CPCG01N27/04
Inventor 姜海纳刘斌刘李鑫延婧张育鸣徐乐华冯国瑞崔家庆宋诚郭栋
Owner TAIYUAN UNIV OF TECH
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