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Gob-side entry retaining side goaf collecting device and method

A technology of collecting device and empty lane retention, which is applied in the directions of measuring devices and instruments, can solve the problems of easy damage of the collecting device and difficulty in monitoring, and achieves the effect of being convenient to carry.

Pending Publication Date: 2022-03-15
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve technical problems such as easy damage to the collection device and difficult monitoring existing in the prior art, the present invention provides a goaf collection device and method at the side of gob-side entry retaining, which is pre-embedded in the support wall A number of monitoring pipelines, through portable monitoring and acquisition units, are used to monitor the gas and temperature of the goaf; and finally achieve the purpose of quickly and accurately determining the scope of the three spontaneous combustion zones on the side of the gob side of the goaf

Method used

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  • Gob-side entry retaining side goaf collecting device and method
  • Gob-side entry retaining side goaf collecting device and method
  • Gob-side entry retaining side goaf collecting device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Such as figure 2 As shown, the valve body includes the first valve body 3 located on the side of the goaf retention, and the sealing and opening of the entire monitoring pipeline 1 is controlled by the first valve body 3; Open the corresponding first valve body 3, and fit the monitoring collection unit 2 into the monitoring pipeline 1; after standing still for 10-20 minutes, perform gas collection and temperature measurement operations; after completing the gas collection and temperature measurement operations, the monitoring collection unit 2 Take it out, and then quickly close the corresponding first valve body 3 .

Embodiment 2

[0043] Such as figure 2 As shown, the valve body includes a first valve body 3 arranged on the side of the gob-side entry, a second valve body 4 arranged on the side of the goaf, and the second valve body 4 passes through the control assembly arranged on the gob-side entry Control opening and closing; when performing temperature collection and gas collection in the goaf, open the corresponding first valve body 3, and extend the monitoring collection unit 2 into the monitoring pipeline 1; at this time, the second valve body is controlled by the control component 4. Open; after standing still for 10-20 minutes, perform gas extraction and temperature measurement operations; after completion of gas extraction and temperature measurement operations, control the second valve body 4 to close through the control component; after the residual gas in the monitoring pipeline 1 is processed, Take out the monitoring collection unit 2, and then close the corresponding first valve body 3; i...

Embodiment 3

[0049] Such as Figure 3-4 As shown, the monitoring collection unit 2 includes a rubber plug 15 matched with the monitoring pipeline 1, and the rubber plug 15 can expand and shrink in the monitoring pipeline 1 for sealing and fixing; the temperature measuring wire 19 and the bundle tube 16 pass through the rubber plug 15; One end of the tube 16 close to the gob-side entry is connected to the gas automatic negative pressure sampler 17 (model: CFZ-30) through a filter, and the other end of the bundle tube 16 extends to the goaf after the rubber plug 15 is matched with the monitoring pipeline 1 One side; the end of the temperature-measuring wire 19 close to the gob-side entry is connected to an explosion-proof multimeter 20 (model METRALINE EXM 25A), the other end of the temperature-measuring wire 19 is connected to the temperature-measuring probe 18, and the explosion-proof multimeter 20 is connected to the temperature measurement through the temperature-measuring wire 19 The pr...

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Abstract

The invention relates to the technical field of gob gas and temperature monitoring, in particular to a gob-side entry retaining side gob collection device and method. Comprising a plurality of monitoring pipelines which are poured and pre-embedded in a supporting wall body, and a monitoring acquisition unit which is used for acquiring gas and temperature data of a goaf, and the monitoring acquisition unit is detachably matched with the plurality of monitoring pipelines so as to perform temperature gas acquisition on different areas; the invention provides a gob-side entry retaining side goaf collection device and method, and the method comprises the steps: pre-burying a plurality of monitoring pipelines in a supporting wall, and carrying out the gas monitoring and temperature monitoring of a goaf through a portable monitoring collection unit; finally, the gob-side entry retaining side spontaneous combustion three-zone range of the gob is quickly and accurately judged.

Description

technical field [0001] The invention relates to the technical field of gob gas and temperature monitoring, in particular to a gob collecting device and method at the side of gob-side entry retention. Background technique [0002] At present, in order to reduce the waste of coal resources and control the problem of gas accumulation in corner corners, some coal enterprises in my country have adopted the technology of pouring retaining walls along the goaf to mine coal seams, that is, pouring retaining walls on the side of the gob roadway, retaining The roadway serves the next working face; most of the current bundle tube monitoring technologies require laying pipelines in advance, and the gas and temperature monitoring can only be carried out after the working face advances to form a goaf, and the working face advances often takes 20 days The above can only be completed, which leads to the problem that the measurement cycle is too long, and the collapse of the goaf can easily de...

Claims

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Application Information

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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 吴祥业王婧雅庞政王帅孙鹏刘志雄
Owner INNER MONGOLIA UNIV OF SCI & TECH
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