CN201037402Y - Goaf decompression coal bed gas extracting simulation experiment device - Google Patents
Goaf decompression coal bed gas extracting simulation experiment device Download PDFInfo
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- CN201037402Y CN201037402Y CNU2007200352364U CN200720035236U CN201037402Y CN 201037402 Y CN201037402 Y CN 201037402Y CN U2007200352364 U CNU2007200352364 U CN U2007200352364U CN 200720035236 U CN200720035236 U CN 200720035236U CN 201037402 Y CN201037402 Y CN 201037402Y
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- 239000003245 coal Substances 0.000 title claims abstract description 69
- 238000004088 simulation Methods 0.000 title abstract description 5
- 230000006837 decompression Effects 0.000 title 1
- 239000011435 rock Substances 0.000 claims abstract description 8
- 238000009423 ventilation Methods 0.000 claims abstract description 5
- 238000000605 extraction Methods 0.000 claims description 27
- 238000002474 experimental method Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 238000005183 dynamical system Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005065 mining Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 69
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
A goaf pressure relief coal-bed gas exhausting and mining simulation experiment device consists of a model body which is arranged on a model support for simulating a coal mine on-site layered rock mass, a gas transmission device which is connected with the model support, a ventilation dynamic system and a data collector, wherein, the model body is provided with a working face, one end of the working face is provided with an intake airflow roadway tube which is communicated with the working face, while the other end of the working face is provided with an air-return way tube and an inner interlocked tail road tube which are respectively connected with an exhaust fan, a high drainage roadway tube which is connected with a circulating vacuum pump is arranged above the working face, each pipe is distributed with a sensor which is connected with the data collector, the model body is provided with an adjacent seams coal-bed gas release plate, a goaf bottom coal-bed gas release tube and a working face coal-bed gas release tube which are connected with coal-bed gas delivery pipes respectively, so the exhausting and mining of the goaf pressure relief coal-bed gas can be simulated conveniently. The utility model is of compact and reasonable structure, good tightness, high safety performance, good simulation effect and wide practicality.
Description
Technical field
The utility model relates to goaf pressure released seam gas extraction analogue experiment installation, is particularly useful for testing extraction of pressure released seam gas and coal bed gas resolution.
Background technology
Coal bed gas is the accompanying gas of coal, claims gas again.Coal bed gas is the same with natural gas, and the two main component all is a methane, all is a kind of important clean energy resource, and its calorific value is 33.5～36.8MJ/m
3, be equivalent to the calorific value of 1.3 kilograms of standard coals.But simultaneously because this gas has explosivity under 5%～16% concentration, be again the pernicious gas that threatens coal mining therefore, a lot of particularly serious coal bed gas accidents all take place every year in China, have caused very big economic loss and harmful effect.Coal bed gas if can be extracted out and be used, can improve resource utilization, can reduce coal bed gas again, avoid the generation of coal bed gas accident, can also reduce the environment pollution that the coal bed gas discharging causes simultaneously, have the effect of achieving many things at one stroke to the gushing out of working space.
But coal seam, the most mining area of China has degree of metamorphism height, permeability is low and gas saturation is low characteristics, has determined that China's exploiting coal bed methane can not be as the U.S., the mode of taking ground drilling directly to take out or take out in advance.Practice shows, in case seam mining causes that the rock stratum moves, even the very low coal seam of permeability, its permeability also will increase tens of times to hundreds of times, and this provides with regard to the extraction of giving coal bed gas may.Thereby the extraction of pressure released seam gas will be the important channel of China's coal-bed gas exploitation in the coal process of adopting.The extraction of pressure released seam gas has caused national great attention at present.National Development and Reform Commission has finished " coal bed gas (coal mine gas) development and use Eleventh Five-Year Plan " authorized strength work.The General Office of the State Council put into effect again " about accelerating some suggestions of coal bed gas (coal mine gas) methane drainage and utilization project " in June, 2006, had formulated the policies and measures of quickening coal bed gas (coal mine gas) methane drainage and utilization project.Therefore, coal field increasing goaf pressure released seam gas extraction has been the inexorable trend under Safety of Coal Mine Production form and the country policy form.How to form under the condition of part coal bed gas extraction system at present, optimize coal bed gas extraction system and extraction performance, being that the passive extraction of pressure released seam gas of purpose is converted into the active exploitation that is used as resource exploitation at present with coal mining safety, and promote the colliery to strengthen the comprehensive pattern that (adopting) face length degree is realized coal and the common high-yield and high-efficiency safe working of coal bed gas of putting, be the important prerequisite work that present coal field desire strengthens the extraction of pressure released seam gas.
The utility model content
It is reasonable that the purpose of this utility model provides a kind of compact conformation, good leak tightness, security performance height, the goaf pressure released seam gas extraction analogue experiment installation that simulate effect is good.
For achieving the above object, coal bed gas extraction analogue experiment installation of the present utility model, by being located at the model main body that holds simulation colliery scene beded rock mass similar mediums on the model support, the air delivery device that links to each other with the model main body, ventilation dynamical system and data acquisition unit constitute, the model main body is provided with work plane, one end of work plane is provided with the air intake lane pipe that is communicated with it, the other end is provided with return airway pipe and the interior wrong tail lane pipe that links to each other with induced draft fan, the work plane top is provided with the height that links to each other with circulating vacuum pump line road and takes out the lane, be evenly equipped with the sensor that links to each other with data acquisition unit on each pipeline, be respectively equipped with the work plane coal bed gas releasing tube that communicates with the air delivery device pipeline on the model main body, goaf underseam gas releasing tube and adjacent layer coal bed gas release board.
Described air delivery device is by the coal seam gas tank, and the pressurizer tank that links to each other with the coal seam gas tank constitutes with the flow meter that links to each other with the pressurizer tank pipeline; Described adjacent layer coal bed gas release board is provided with the coal bed gas release aperture of evenly exhaust, is provided with in the described model main body and cuts apart plate, and the place, base angle of cutting apart plate is provided with the air intake lane.
The utility model is selected the similar mediums similar to the colliery scene beded rock mass for use, and carry out the accumulation and the pressure-bearing of goaf medium according to the disrumpent feelings form of " O-X " type, the rock stratum movement law of roof, " 0 " shape circle feature of adopting the rock cranny development, mainly be consistent with colliery scene adjacent layer coal bed gas along the flowing law of mining induced fissure.Can simulate extraction, the goaf pressure released seam gas of goaf pressure released seam gas easily coal seam, goaf tolerance is extracted out in influence, the tail lane of work plane coal bed gas outburst amount.When height is taken out the lane location arrangements in differing heights different layers position, can test height and take out the extraction effect of position, lane pressure released seam gas; Simultaneously can change the extraction negative pressure that height is taken out the lane, the test height is taken out the influence of the variation of lane extraction negative pressure to pressure released seam gas extraction amount.Wrong tail lane diverse location, different parameters and many tails lane are arranged and are extracted coal seam tolerance out and to the influence of working space coal bed gas outburst amount in can testing, and height is taken out lane extraction coal bed gas Effect on Performance.When the tail lane was arranged in the diverse location of model, under the situation of same coal seam gas injection rate, wrong tail lane was apart from the Reasonable Parameters in the optimum position and the interior wrong tail lane of return airway in can testing; Can test simultaneously high-yield and high-efficiency adopt greatly the farm labourer do to arrange two under the noodles spare in wrong tail lane to the influence of goaf coal bed gas extraction amount.Its compact conformation is reasonable, good leak tightness, and the security performance height, simulate effect is good, has practicality widely in the present technique field.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model model agent structure schematic diagram.
Fig. 3 is the A-A sectional structure schematic diagram of Fig. 1.
Fig. 4 is an adjacent layer coal bed gas release board structural representation.
The specific embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
Shown in Figure 1, coal bed gas extraction analogue experiment installation of the present utility model, by being located at the model main body 1 that holds simulation colliery scene beded rock mass on the model support 2, the air delivery device that links to each other with model main body 1, ventilation dynamical system and data acquisition unit 18 constitute, model main body 1 is mainly the working space and the mining influence scope of experimental face, includes the Heng San district in goaf, perpendicular three bands.And an end that is provided with the needed work plane 12 of recovery activity, work plane 12 in the relevant position is provided with the air intake lane 11 that links to each other with pipeline, the other end is provided with a return airway 3 and a plurality of interior wrong tail lane 4 that links to each other with induced draft fan 9, the work plane top is provided with a plurality of high lane 5 of taking out that can link to each other with circulating vacuum pump 10, induced draft fan 9 provides exhaust ventilation for the model work plane, and 10 of circulating vacuum pumps are used for simulating the extraction that the colliery scene water-circulating pump carries out pressure released seam gas.Wrong tail lanes 4 are equipped with and are connected valve with a plurality of high 5 entrance, lane of taking out in a plurality of, connect different access adit valves according to different experiments, and Fig. 2 is shown in Figure 3.Be evenly equipped with the sensor 7 that links to each other with data acquisition unit 18 on each pipeline, sensor 7 is divided into coal bed gas concentration sensor, pressure sensor, air velocity transducer, concentrates by collector 18 and gathers, by the computer parallel processing.Be respectively equipped with a plurality of work plane coal bed gas releasing tubes 13 that communicate with the air delivery device pipeline, goaf underseam gas releasing tube 14 and adjacent layer coal bed gas releasing tube 15 on the model main body 1, coal bed gas releasing tube 15 is provided with adjacent layer coal bed gas release board 17, adjacent layer coal bed gas release board 17 is provided with the release aperture that can evenly discharge coal bed gas, and is shown in Figure 4.Air delivery device is by coal seam gas tank 24, and the pressurizer tank 20 that links to each other with coal seam gas tank 24 constitutes with the flow meter 23 that links to each other with pressurizer tank 20 pipelines.The dropping valve 25 of control coal bed gas injection pressure is installed on the coal seam gas tank 24, keeps balance to guarantee coal bed gas pressurizer tank 20 internal pressures.Pressurizer tank 20 is provided with pressure meter 21, can observe the pressure stability situation in the pressurizer tank 20 at any time, by flow meter 23 adjustable joint coal bed gas injection rates, keeps consistent with institute each place coal bed gas burst size of experimental face.Be provided with two of can change experimental face length in the model main body 1 simultaneously and cut apart plate 26, the every place, base angle of cutting apart plate 26 is equipped with air intake lane 11.
Claims (4)
1. goaf pressure released seam gas extraction analogue experiment installation, it is characterized in that: it is provided with the model main body (1) of simulating the colliery scene beded rock mass by being located at model support (2), the air delivery device that links to each other with model main body (1), ventilation dynamical system and data acquisition unit (18) constitute, model main body (1) is provided with work plane (12), one end of work plane (12) is provided with the air intake lane (11) that communicates with it, the other end is provided with return airway (3) and the interior wrong tail lane (4) that links to each other with induced draft fan (9), the work plane top is provided with the height that links to each other with circulating vacuum pump (10) and takes out lane (5), be evenly equipped with the sensor (7) that links to each other with data acquisition unit (18) on each pipeline, be respectively equipped with a plurality of work plane coal bed gas releasing tubes (13) that communicate with the air delivery device pipeline on the model main body (1), goaf underseam gas releasing tube (14) and adjacent layer coal bed gas releasing tube (15), adjacent layer coal bed gas releasing tube (15) is provided with adjacent layer coal bed gas release board (17).
2. pressure released seam gas extraction analogue experiment installation in goaf according to claim 1, it is characterized in that: described air delivery device is by coal seam gas tank (24), and the pressurizer tank (20) that links to each other with coal seam gas tank (24) constitutes with the flow meter (23) that links to each other with pressurizer tank (20) pipeline.
3. pressure released seam gas extraction analogue experiment installation in goaf according to claim 1, it is characterized in that: described adjacent layer coal bed gas release board (17) is provided with the evenly release aperture of exhaust.
4. pressure released seam gas extraction analogue experiment installation in goaf according to claim 1 is characterized in that: be provided with in the described model main body (1) and cut apart plate (26), the place, base angle of cutting apart plate (26) is provided with air intake lane (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200352364U CN201037402Y (en) | 2007-03-06 | 2007-03-06 | Goaf decompression coal bed gas extracting simulation experiment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200352364U CN201037402Y (en) | 2007-03-06 | 2007-03-06 | Goaf decompression coal bed gas extracting simulation experiment device |
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| CN201037402Y true CN201037402Y (en) | 2008-03-19 |
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| CNU2007200352364U Expired - Fee Related CN201037402Y (en) | 2007-03-06 | 2007-03-06 | Goaf decompression coal bed gas extracting simulation experiment device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134993A (en) * | 2011-01-22 | 2011-07-27 | 河南理工大学 | Simulation experiment device for controlling production of coal bed methane vertical well |
| CN102279420A (en) * | 2011-04-15 | 2011-12-14 | 河南理工大学 | Development simulation test system of coal metamorphism evolution fissure system |
| CN102635395A (en) * | 2012-05-10 | 2012-08-15 | 中国矿业大学 | Method for governing gas ultralimit during initial mining stage of coal mine working face |
| CN103089287A (en) * | 2011-11-03 | 2013-05-08 | 中国矿业大学(北京) | Adjustable working face dust simulation experiment device |
| CN104564126A (en) * | 2014-12-30 | 2015-04-29 | 徐州恒安煤矿技术有限公司 | Method and device for detecting arrangement position of highly collection tunnel |
| CN105954459A (en) * | 2016-04-27 | 2016-09-21 | 河南理工大学 | Device for detecting influence of coal mine goaf gas drainage on coal spontaneous combustion |
| CN106917605A (en) * | 2017-02-25 | 2017-07-04 | 太原理工大学 | A kind of abandoned mine goaf coal bed gas flooring-safe intelligent extraction system |
| CN109356553A (en) * | 2018-10-29 | 2019-02-19 | 中国矿业大学 | A kind of coal bed gas horizontal well collapse hole makes cave Depressurized mining simulation experiment system |
| WO2019205577A1 (en) * | 2018-04-28 | 2019-10-31 | 中国矿业大学 | Simulation test system for gas extraction from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity |
| WO2019205578A1 (en) * | 2018-04-28 | 2019-10-31 | 中国矿业大学 | Simulation test system for gas extraction from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity |
| CN113513359A (en) * | 2021-08-09 | 2021-10-19 | 太原理工大学 | Fully-mechanized coal mining coal seam high-position roadway one-roadway dual-purpose gas extraction method |
| CN116608003A (en) * | 2023-05-25 | 2023-08-18 | 中国矿业大学 | Mine coal and gas co-mining composite disaster simulation test system and method |
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2007
- 2007-03-06 CN CNU2007200352364U patent/CN201037402Y/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134993B (en) * | 2011-01-22 | 2014-03-05 | 河南理工大学 | Simulation experiment device for controlling production of coal bed methane vertical well |
| CN102134993A (en) * | 2011-01-22 | 2011-07-27 | 河南理工大学 | Simulation experiment device for controlling production of coal bed methane vertical well |
| CN102279420A (en) * | 2011-04-15 | 2011-12-14 | 河南理工大学 | Development simulation test system of coal metamorphism evolution fissure system |
| CN102279420B (en) * | 2011-04-15 | 2013-03-13 | 河南理工大学 | Development simulation test system of coal metamorphic evolution fissure system |
| CN103089287B (en) * | 2011-11-03 | 2016-02-03 | 中国矿业大学(北京) | A kind of adjustable work plane dust simulation experiment device |
| CN103089287A (en) * | 2011-11-03 | 2013-05-08 | 中国矿业大学(北京) | Adjustable working face dust simulation experiment device |
| CN102635395B (en) * | 2012-05-10 | 2014-06-18 | 中国矿业大学 | Method for governing gas ultralimit during initial mining stage of coal mine working face |
| CN102635395A (en) * | 2012-05-10 | 2012-08-15 | 中国矿业大学 | Method for governing gas ultralimit during initial mining stage of coal mine working face |
| CN104564126A (en) * | 2014-12-30 | 2015-04-29 | 徐州恒安煤矿技术有限公司 | Method and device for detecting arrangement position of highly collection tunnel |
| CN105954459A (en) * | 2016-04-27 | 2016-09-21 | 河南理工大学 | Device for detecting influence of coal mine goaf gas drainage on coal spontaneous combustion |
| CN106917605A (en) * | 2017-02-25 | 2017-07-04 | 太原理工大学 | A kind of abandoned mine goaf coal bed gas flooring-safe intelligent extraction system |
| US10995572B2 (en) | 2018-04-28 | 2021-05-04 | China University Of Mining And Technology | Simulation test method for gas extraction from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity |
| WO2019205577A1 (en) * | 2018-04-28 | 2019-10-31 | 中国矿业大学 | Simulation test system for gas extraction from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity |
| WO2019205578A1 (en) * | 2018-04-28 | 2019-10-31 | 中国矿业大学 | Simulation test system for gas extraction from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity |
| US11035228B2 (en) | 2018-04-28 | 2021-06-15 | China University Of Mining And Technology | Simulation test system for gas extraction from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity |
| CN109356553A (en) * | 2018-10-29 | 2019-02-19 | 中国矿业大学 | A kind of coal bed gas horizontal well collapse hole makes cave Depressurized mining simulation experiment system |
| CN113513359A (en) * | 2021-08-09 | 2021-10-19 | 太原理工大学 | Fully-mechanized coal mining coal seam high-position roadway one-roadway dual-purpose gas extraction method |
| CN116608003A (en) * | 2023-05-25 | 2023-08-18 | 中国矿业大学 | Mine coal and gas co-mining composite disaster simulation test system and method |
| CN116608003B (en) * | 2023-05-25 | 2023-11-24 | 中国矿业大学 | Mine coal and gas co-mining composite disaster simulation test system and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 |