CN112253251A - Be used for colliery gas to take out and adopt effect evaluation system - Google Patents
Be used for colliery gas to take out and adopt effect evaluation system Download PDFInfo
- Publication number
- CN112253251A CN112253251A CN202011218336.7A CN202011218336A CN112253251A CN 112253251 A CN112253251 A CN 112253251A CN 202011218336 A CN202011218336 A CN 202011218336A CN 112253251 A CN112253251 A CN 112253251A
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- extraction
- coal mine
- drainage
- negative pressure
- wireless communication
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- 230000000694 effects Effects 0.000 title claims abstract description 19
- 238000011156 evaluation Methods 0.000 title claims abstract description 16
- 238000000605 extraction Methods 0.000 claims abstract description 71
- 239000003245 coal Substances 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000013500 data storage Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002354 daily effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to a coal mine gas extraction effect evaluation system, which can effectively solve the problem of the actual drainage condition of each area in the existing gas extraction evaluation unit, the technical proposal for solving the problem is that a negative pressure sensor, a flow sensor and a concentration sensor are arranged on each drill hole of the coal mine, monitoring and measuring drainage negative pressure, flow and concentration of each drainage area of the coal mine, analyzing whether drainage blind areas exist in the drainage evaluation area or not, uploading data to a wireless communication system, the invention can automatically analyze the extraction time, the extraction purity, the extraction negative pressure and the extraction difference coefficient through the wireless communication system, whether the extraction difference coefficient meets the extraction standard-reaching related requirements or not, and make an actual judgment conclusion, can know the extraction and release conditions of each area in the gas extraction evaluation unit in real time, and the system can effectively avoid the extraction blind area, and is an innovation of the system for evaluating the coal mine gas extraction effect.
Description
Technical Field
The invention relates to the field of coal mines, in particular to a coal mine gas extraction effect evaluation system.
Background
In the safety production of a coal mine, the gas extraction reaches the standard, which is an important link for gas control and determines whether the gas exceeds the limit and the coal and gas are protruded; according to the requirements of coal mine safety regulations, temporary gas extraction standard-reaching regulations and outburst prevention rules, each extraction unit is independently measured and evaluated, in the actual gas extraction evaluation process, the whole evaluation unit is independently measured and evaluated, effective measurement cannot be carried out on a drill hole with poor extraction effect, an extraction blind area cannot be analyzed, extraction standard-reaching distortion is caused, the extraction standard-reaching authenticity is misled, and great potential safety hazards are brought to the safety work of coal mine gas control and outburst prevention.
When a relatively long rock cross-cut is developed and coal is uncovered on a working face, the conventional metering device is used, so that the problems that the transmission distance and the power supply distance are long, a monitoring cable and a transmission line need to be laid again, the investment is more, and the 'voltage drop' can occur in the long-distance power supply are solved, so that the metering device is unreliable in operation. At present, except for measurement of an extraction evaluation unit, no system related report for evaluating the extraction effect of an individual borehole is found.
Disclosure of Invention
In view of the above situation, in order to solve the defects of the prior art, the invention aims to provide an evaluation system for coal mine gas extraction effect, which can effectively solve the problem of the actual drainage situation of each area in the existing gas extraction evaluation unit.
The invention solves the technical scheme that a negative pressure sensor, a flow sensor and a concentration sensor are arranged on each drill hole of a coal mine, the drainage negative pressure, the flow and the concentration of each drainage area of the coal mine are monitored and measured, whether drainage blind areas exist in the drainage evaluation area is analyzed, data are uploaded to a wireless communication system, the drainage time, the drainage purity, the drainage negative pressure and the drainage difference coefficient are automatically analyzed through the wireless communication system, whether the drainage difference coefficient meets the relevant drainage standard requirements or not is judged, an actual judgment conclusion is made, the wireless communication system has the functions of data monitoring, data acquisition, data calculation, data storage and data printing, the drainage condition of each drill hole every day is automatically generated according to the drainage parameters such as the drainage time, the drainage negative pressure, the drainage purity and the like, and finally, the critical value is preset according to the requirements of 'anti-outburst fine rule' and 'drainage standard judgment fine rule', and judging whether the extraction effect reaches the standard or not.
The method can know the drainage condition of each area in the gas extraction evaluation unit in real time, can effectively avoid the extraction blind area, and is an innovation of a system for evaluating the gas extraction effect of the coal mine.
Detailed Description
The following description of the embodiments of the present invention will be described in detail with reference to the actual situation of a coal mine.
The invention arranges a negative pressure sensor, a flow sensor and a concentration sensor for each drill hole of the coal mine, monitoring and measuring drainage negative pressure, flow and concentration of each drainage area of the coal mine, analyzing whether drainage blind areas exist in the drainage evaluation area or not, uploading data to a wireless communication system, the wireless communication system automatically analyzes the extraction time, the extraction purity, the extraction negative pressure and the extraction difference coefficient, whether the extraction difference coefficient meets the extraction standard related requirements or not, and makes an actual judgment conclusion, and has the functions of data monitoring, data acquisition, data calculation, data storage and data printing, automatically generating the daily drainage condition of each drill hole according to the drainage parameters such as drainage time, drainage negative pressure, drainage pure quantity and the like, and finally, presetting related critical values according to the requirements of 'outburst prevention fine rule' and 'extraction standard reaching judgment fine rule', and judging whether the extraction effect reaches the standard.
In order to ensure the using effect, the wireless communication system comprises a wireless network, data monitoring equipment and a wireless network adjusting device, monitoring data of negative pressure, flow and concentration of drainage of each drainage area of the coal mine are uploaded to the wireless communication system, and whether the drainage effect reaches the standard or not is judged.
The wireless communication system supplies power by using two modes of standby battery power supply and wired power supply, can use an underground production power supply to charge the standby battery and supply power to equipment at the same time, has the service time of 24 hours and the full charge time of 1 hour, and solves the problem of special power supply for underground monitoring equipment.
The method has the advantages that the extraction pure quantity is measured by monitoring the flow, the negative pressure and the concentration of the extraction single hole, the system automatically measures and calculates the extraction time, the extraction rate and the extraction difference coefficient, whether the extraction of the extraction area reaches the standard or not is evaluated by the system, the extraction of the cross-cut coal uncovering, bedding pre-extraction and crossing pre-extraction evaluation units is ensured to reach the standard, the extraction blind area is avoided, the method is an innovation on the system for evaluating the coal mine gas extraction effect, and the method has good economic and social benefits.
Claims (3)
1. A system for evaluating the gas extraction effect of a coal mine is characterized in that a negative pressure sensor, a flow sensor and a concentration sensor are arranged on each drill hole of the coal mine, the extraction negative pressure, the flow and the concentration of each extraction area of the coal mine are monitored and measured, whether extraction blind areas exist in the extraction evaluation area is analyzed, data are uploaded to a wireless communication system, the extraction time, the extraction purity, the extraction negative pressure and the extraction difference coefficient are automatically analyzed through the wireless communication system, whether extraction standard related requirements are met or not is judged, an actual judgment conclusion is made, the wireless communication system has the functions of data monitoring, data acquisition, data calculation, data storage and data printing, the daily extraction condition of each drill hole is automatically generated according to the extraction parameters such as the extraction time, the extraction negative pressure and the extraction purity, and the like, and finally the requirements of an extraction standard judgment rule are met, and presetting a related critical value, and judging whether the extraction effect reaches the standard or not.
2. The system for evaluating the gas extraction effect of the coal mine according to claim 1, wherein the wireless communication system comprises a wireless network, data monitoring equipment and a wireless network adjusting device, monitoring data of the extraction negative pressure, the flow rate and the concentration of each extraction area of the coal mine are uploaded to the wireless communication system, and whether the extraction effect reaches the standard is judged.
3. The system for evaluating the gas extraction effect of the coal mine according to claim 1, wherein the wireless communication system supplies power by using a standby battery and a wired power supply, and can supply power to equipment while charging the standby battery by using a downhole production power supply, the standby battery is used for 24 hours, and the full charge time is 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218336.7A CN112253251A (en) | 2020-11-04 | 2020-11-04 | Be used for colliery gas to take out and adopt effect evaluation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218336.7A CN112253251A (en) | 2020-11-04 | 2020-11-04 | Be used for colliery gas to take out and adopt effect evaluation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112253251A true CN112253251A (en) | 2021-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011218336.7A Pending CN112253251A (en) | 2020-11-04 | 2020-11-04 | Be used for colliery gas to take out and adopt effect evaluation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112253251A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20092100L (en) * | 2008-06-12 | 2009-12-14 | Schlumberger Technology Bv | Assessment of multiphase flow in a borehole using temperature and pressure paints |
| CN102230375A (en) * | 2011-06-10 | 2011-11-02 | 中国矿业大学 | Method and device for monitoring coal bed gas parameter in real time |
| CN105257335A (en) * | 2015-10-16 | 2016-01-20 | 中国矿业大学 | Ground drilling well extraction pressure relief coal seam and goaf gas effect evaluation and control method |
| JP2016176219A (en) * | 2015-03-19 | 2016-10-06 | 三菱重工業株式会社 | Extracted gas compression system and device and method for detecting abnormality thereof |
| CN110306964A (en) * | 2019-07-02 | 2019-10-08 | 中国矿业大学 | A kind of visualization of hydraulic fracturing coal seam crackle and antireflective effect evaluation method |
| CN111425185A (en) * | 2020-03-23 | 2020-07-17 | 湖南科技大学 | Control method of dynamic visualization system for outburst elimination and extraction standard reaching of coal mine excavation working face |
-
2020
- 2020-11-04 CN CN202011218336.7A patent/CN112253251A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20092100L (en) * | 2008-06-12 | 2009-12-14 | Schlumberger Technology Bv | Assessment of multiphase flow in a borehole using temperature and pressure paints |
| CN102230375A (en) * | 2011-06-10 | 2011-11-02 | 中国矿业大学 | Method and device for monitoring coal bed gas parameter in real time |
| JP2016176219A (en) * | 2015-03-19 | 2016-10-06 | 三菱重工業株式会社 | Extracted gas compression system and device and method for detecting abnormality thereof |
| CN105257335A (en) * | 2015-10-16 | 2016-01-20 | 中国矿业大学 | Ground drilling well extraction pressure relief coal seam and goaf gas effect evaluation and control method |
| CN110306964A (en) * | 2019-07-02 | 2019-10-08 | 中国矿业大学 | A kind of visualization of hydraulic fracturing coal seam crackle and antireflective effect evaluation method |
| CN111425185A (en) * | 2020-03-23 | 2020-07-17 | 湖南科技大学 | Control method of dynamic visualization system for outburst elimination and extraction standard reaching of coal mine excavation working face |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210122 |