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Timing and fixed-point measurement device for air leakage flow field in goaf and its use and measurement method

A technology of measuring device and timing device, which is applied in the direction of measuring device, fluid dynamics test, machine/structural component test, etc., can solve the problem of limited theoretical basis and basic data acquisition means, and has not yet solved the method of goaf flow field parameters , Can not meet the fine gas control and other problems, to achieve the effect of accelerating transformation and application, enriching technical means

Active Publication Date: 2022-02-08
CCTEG SHENYANG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, scientific research institutes and mines mainly propose control plans for the abnormal gas emission that can be observed in the goaf area. The theoretical basis and basic data acquisition methods for the control plan are limited, and the gob bundle tube and numerical simulation are mainly used. As a theoretical support, the data can no longer meet the needs of refined gas control
At present, the research on the distribution characteristics of the goaf flow field at home and abroad has not yet solved the method of directly measuring the flow field parameters of the gob

Method used

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  • Timing and fixed-point measurement device for air leakage flow field in goaf and its use and measurement method
  • Timing and fixed-point measurement device for air leakage flow field in goaf and its use and measurement method
  • Timing and fixed-point measurement device for air leakage flow field in goaf and its use and measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] like Figure 1-Figure 3 As shown, the timing and fixed-point measurement device 16 of the goaf air leakage flow field proposed in this embodiment includes a box body 1, and a tracer gas bottle 3, a bottle stopper 4, a lever 5, and a lever support shaft arranged inside the box body 1. 6. The slider 9, the slider baffle 11 and the timing device 12, wherein the box body 1 is provided with a release hole 2, the lever support shaft 6 is connected to the middle section of the lever 5, and the lever 5 is rotatably connected to the lever 5 through the support shaft of the lever 5. Inside the box 1, the top of the tracer gas bottle 3 has a bottle mouth, and the tracer gas bottle 3 is arranged below the first side of the lever 5, and the first side of the lever 5 corresponds to the bottle stopper 4 at the mouth of the tracer gas bottle 3; the lever 5 The second side has a built-in slideway, and the end of the slideway close to the lever support shaft 6 is provided with a spring 8...

Embodiment 2

[0037] The method for using the timing and fixed-point measuring device 16 of the air leakage flow field in the goaf proposed in this embodiment uses the timing and fixed-point measuring device 16 for the air leakage flow field in the goaf proposed in Embodiment 1, and the method is as follows:

[0038] The timing and fixed-point measurement device 16 of the air leakage flow field in the goaf is debugged, the bottle stopper 4 of the tracer gas bottle 3 is tightly plugged, the pointer 14 of the timing device is located at the bottom end of the toggle opening 10, and the lever 5 is in a balanced state, which is Timing device 12 is in untimed state, as figure 1 shown.

[0039] Tighten the clockwork of the timing device 12 to time the measuring device, the pointer 14 of the timing device leaves the toggle opening 10, under the push of the spring 8, the slide block 9 slides to the right, the toggle opening 10 is blocked by the slide block 9, and the lever 5 is still in a balanced ...

Embodiment 3

[0042] The timing and fixed-point measurement method for the goaf air leakage flow field proposed in this embodiment uses the timing and fixed-point measurement device 16 for the goaf air leakage flow field proposed in Embodiment 1.

[0043] like Figure 4-Figure 6 As shown, when the underground working face of the coal mine is in the mining process, the timed and fixed-point measurement device 16 for the air leakage flow field in the goaf is placed at the tail position behind the hydraulic support of the coal mining face 18, and is placed in the coal mine underground along the direction of the coal mining face 18. When the working face is in the mining process, the timed and fixed-point measurement device 16 of the air leakage flow field in the goaf is placed at the tail position behind the hydraulic support of the coal mining face 18. The distance between the strike direction of the coal working face 18 and the rear tail is Y, such as Figure 4 As shown, where X can be set ...

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Abstract

The invention relates to a goaf air leakage flow field measurement technology, a timing and fixed-point measurement device for the goaf air leakage flow field, wherein the lever is rotatably connected in the box through the lever support shaft, and the first side of the lever corresponds to the mouth of the tracer gas bottle There is a bottle stopper; the second side of the lever has a built-in slideway, and the end of the slideway close to the lever support shaft is provided with a spring, the slider is placed in the slideway, and the top of the slideway away from the lever support shaft has a toggle opening; The timing device is placed above the second side of the lever. The timing device has a timing device shaft that can be driven and rotated by the timing device. The timing device pointer is installed on the timing device shaft. The timing device shaft is opposite to the toggle opening. The movement path of the free end enters the toggle opening. The device can complete the measurement of the air leakage flow field in the goaf. The invention also proposes a method for using the device for timing and fixed-point measurement of the air leakage flow field in the goaf, and a method for timing and fixed-point measurement of the air leakage flow field in the goaf.

Description

technical field [0001] The invention relates to a goaf air leakage flow field measurement technology, in particular to a timed and fixed-point measurement device for the goaf air leakage flow field and its use and measurement method. Background technique [0002] The combined disasters of gas disasters in coal mines and coal seam spontaneous combustion are concentrated in gobs. The physical characteristics of the goaf are directly related to the characteristics of the flow field, and great progress in gas and fire prevention also depends on an in-depth understanding of its characteristics. At present, the technical means of studying the flow field characteristics of the goaf can be roughly divided into three categories, namely theoretical analysis, numerical simulation and similar simulation. The progress of the research on the characteristics of the goaf flow field is accompanied by the deepening of the understanding of the physical field of the goaf. In the course of its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 刘春刚孙珍平段宏飞吕文陵刘宝志翁旭泽李铁良孙亮刘浩张东旭唐辉赵国会
Owner CCTEG SHENYANG RES INST
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