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Coal Sampler, Coal and Gas Outburst Monitoring System and Prediction Method

A sampler and gas technology, applied in the field of coal and gas outburst prediction, coal and gas outburst monitoring system, can solve the problem of taking one sample and not being able to reuse it, and achieve the effect of repeated use

Active Publication Date: 2019-11-05
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the technical problem that the coal sample sealing sampling device in the prior art can only take one sample at a time and cannot be reused, and further provides a coal sample sampling device that is easy to operate and can quickly and repeatedly sample

Method used

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  • Coal Sampler, Coal and Gas Outburst Monitoring System and Prediction Method
  • Coal Sampler, Coal and Gas Outburst Monitoring System and Prediction Method
  • Coal Sampler, Coal and Gas Outburst Monitoring System and Prediction Method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0046] This embodiment provides a coal sampler for gas desorption test, such as figure 1 As shown, it includes: a front cylinder body 1, a movable sleeve 2 and a rear cylinder body 3 which are coaxially connected in sequence from front to rear. The front end of the front cylinder body 1 is provided with a central drill bit 4 and a plurality of peripheral The drill bit 5, the plurality of peripheral drill bits 5 are arranged symmetrically with respect to the central drill bit 4; a connection port is provided at the rear end of the rear cylinder body 3, which is suitable for connecting the drilling drive mechanism, and specifically, threaded connection and the like can be used The movable sleeve 2 is arranged in the middle part of the cylinder, and the front end of the movable sleeve 2 is open; The outside of the cylinder slides out; in this embodiment, a rotating shaft 9 is arranged between the front cylinder 1 and the rear cylinder 3, and the rotation shaft 9 is connected to t...

Embodiment 2

[0054] This embodiment provides a coal sampler for gas desorption test, such as Figure 7 As shown, it includes: a front cylinder body 1, a movable sleeve 2 and a rear cylinder body 3 which are coaxially connected in sequence from front to rear. The front end of the front cylinder body 1 is provided with a central drill bit 4 and a plurality of peripheral The drill bit 5, the plurality of peripheral drill bits 5 are arranged symmetrically with respect to the central drill bit 4; a connection port is provided at the rear end of the rear cylinder body 3, which is suitable for connecting the drilling drive mechanism, and specifically, threaded connection and the like can be used The movable sleeve 2 is arranged in the middle part of the cylinder, and the front end of the movable sleeve 2 is open; The outside of the cylinder slides out; this embodiment is the same as that in Embodiment 1, and a rotating shaft 9 is arranged between the front cylinder 1 and the rear cylinder 3, and ...

Embodiment 3

[0065] This embodiment provides a gas desorption test device, including the coal sampler described in Example 1 or Example 2 and a gas desorption tester, the gas inlet pipe of the gas desorption tester is suitable for passing through the sampling cylinder 21 The gas nozzle 25 communicates with the sampling cylinder 21.

[0066] This embodiment also provides a monitoring system for gas outburst prediction, including the gas desorption test device; it also includes: a drilling cuttings detection device, used to test the drilling cuttings per unit drilling depth; The concentration sensing device is used to monitor the gas concentration. The cuttings amount detection device includes a cylinder with one end open, and a through hole is arranged in the center of the cylinder for the drill bit to pass through. The drill bit is drilled through the through hole, and the cylinder body can be used to accept the drilled coal chips. Weighing with a weighing device can calculate the weight...

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Abstract

The invention provides a coal sampling device for a gas desorption test. The coal sampling device comprises a front barrel body, a movable sleeve and a rear barrel body which are sequentially and coaxially connected in the direction from front to back; a sampling barrel is nested and mounted in the movable sleeve; when sampling is completed, the movable sleeve slides toward the outer sides of thebarrel bodies and moves out of the barrel bodies, so that the sampling barrel can be taken out; after the sampling barrel is taken out, a gas nozzle is communicated with a gas inlet needle of a gas desorption testing device, so that the test on gas desorption amount is carried out; a new sampling barrel is put into the movable sleeve, so that new sampling can be carried out, and repeated utilization of the coal sampling device is realized.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety, and in particular relates to a coal and gas outburst monitoring system and a coal and gas outburst prediction method based on the detection system. Background technique [0002] Coal and gas outburst is an extremely complex dynamic phenomenon in the process of coal mining. Coal and gas outburst is the result of multiple factors such as ground stress, coal seam gas, and coal physical and mechanical properties. Under the action of pressure, a large amount of broken coal and gas are suddenly ejected from the coal body to the mining space. The outburst of coal and gas is a powerful natural disaster in the underground production of coal mines, which seriously threatens the safe production of coal mines and causes great damage. sex. [0003] Coal and gas outbursts have omens before each occurrence, but the types and times of omens are different. Familiarity with and mastering omens is of grea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/22G01N1/08
Inventor 游波施式亮刘何清罗文柯李润求李石林
Owner HUNAN UNIV OF SCI & TECH
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