CN203161272U - High-position similar-E-shaped ventilation system for coal face - Google Patents
High-position similar-E-shaped ventilation system for coal face Download PDFInfo
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- CN203161272U CN203161272U CN 201320053297 CN201320053297U CN203161272U CN 203161272 U CN203161272 U CN 203161272U CN 201320053297 CN201320053297 CN 201320053297 CN 201320053297 U CN201320053297 U CN 201320053297U CN 203161272 U CN203161272 U CN 203161272U
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Abstract
The utility model relates to a ventilation system for gas overrun of corners and a return air way of a coal face, in particular to a high-position similar-E-shaped ventilation system for the coal face, and belongs to the technical field of coal mine safety equipment. According to the high-position similar-E-shaped ventilation system for the coal face, a gas discharge high-position way is formed in a rock stratum above a coal seam at the position, close to the return air way, between the return air way and an air inlet way, the one-inlet-and-two-return high-position similar-E-shaped ventilation system is formed, gas in a goaf is prevented from gushing towards the corners and the return air way of the coal face through adjustment of air volume and air pressure of the return air way and adjustment of air volume and air pressure of the gas discharge high-position way, and the gas of the goaf is guided and is transported to a way for the gas. A high-position tail way is used by the high-position similar-E-shaped ventilation system to increase air leak areas of the goaf, the gathering mode of gas of a U-shaped ventilation system is changed, a high-position similar-E-shaped coal face air power system is formed under the action of ventilating system negative pressure and/or auxiliary extraction negative pressure, and the problem of gas accumulation in the corners of the coal face can be effectively solved.
Description
Technical field
The utility model relates to the ventilation system of a kind of coal-face upper corner and return airway gas exceeding limit, is specifically related to the high biased E type ventilation system of a kind of coal-face, belongs to the safety of coal mines equipment technical field.
Background technology
Along with colliery modern production technology is constantly strengthened, the comprehensive mechanical coal mining mining rate is increasing, the concentration of production, fltting speed are fast, the face gas of adopting is gushed out have high strength, big quantity and gushed out characteristics such as unbalanced, fully mechanized coal face is because mining height is big simultaneously, adopt and grow up, strike length is big, thereby the goaf area is big, cause return and local gas (especially upper corner) to transfinite seriously, safety in production has been constituted very big threat.
At present the U-shaped ventilation system of work plane that generally adopts has a strong impact on the ordinary production in colliery because upper corner and air return way gas density often transfinite, and is restricting applying and the raising of overall economic efficiency of high-yield and high-efficiency coal-mining technique.In order to guarantee higher output, must guarantee certain coal cutting speed, so working face wall, coal breakage gas gush out and be difficult to effective control, generally can only be by pumping the gas emission of little coal in advance.Compare with coal breakage with rib, the goaf relative complex of gushing out, the space that gushes out is also bigger.By the research that research and the stope gas of stope ventilation system mode are gushed out rule, can more effectively take corresponding measure, administer goaf and the gas of adopting face.For the bigger work plane of gas emission, carrying out the improvement of ventilation system and the comprehensive control measures of gas drainage under suction is the fundamental way that solves the face gas problem.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art part, providing a kind of coal-face high biased E type ventilation system.This system is equipped with the high-order lane of a drawing-off gas in the close rock stratum, top, coal seam of return airway between return airway, air intake lane, form high biased " E " type ventilation system of " advances two times ", by regulating air quantity and the blast in the high-order lane of return airway and drawing-off gas, suppress the gas in goaf and gush out to adopting face upper corner and return airway, the guiding goaf gas is migrated to the special-purpose lane of gas.The erecting dense individual props space is big after the exploitation of high seam fully-mechanized mining working, and the gas that goaf delay coal is gushed out is enriched in this, leaks out by force because of the goaf and is with the interior distinguished and admirable turbulent condition that is, and the stream that leaks out fully mixes with high concentration gas discharges from return side afterwards.Under tradition " U " type ventilation system, leaking out in the goaf, to carry unique passage that high concentration gas discharges be the fully-mechanized mining working upper corner to stream, causes fully-mechanized mining working upper corner and return airway gas density to transfinite for a long time.Under height biased " E " type ventilation system, fully mechanized coal face is arranged 2 return airways, and the goaf high concentration gas has 2 passing aways selective.According to Hydrodynamics Theory, in the ventilation roadway, distinguished and admirable always to flow to blast from the blast general goal little, and leeway is to overcome flowing resistance to make distinguished and admirable mobile power.Because the drawing-off gas lane is communicated with the goaf and destroyed by mining induced stress, tunnel hysteresis working face wall 2～5m inbreak, flowing resistance is bigger, therefore, regulate 2 leeways between the return airway by regulating the connection roadway resistance, make discharging dash pressure be lower than return airway, realization goaf high concentration gas is discharged from top board drawing-off gas lane.The lane gas density control of the special-purpose drawing-off gas of " safety regulations in coal mine " regulation is getting final product below 2.5%, by the air connection air intake high concentration gas is diluted to below the normal concentration.
The technical solution used in the present invention is: the high biased E type ventilation system of a kind of coal-face, in treating the bank, be furnished with air intake lane, return airway, it is characterized in that: be equipped with the high-order lane of a drawing-off gas between described return airway, the air intake lane in the close rock stratum, top, coal seam of return airway, form high biased " E " type ventilation system of " advances two times ", by regulating air quantity and the blast in the high-order lane of return airway and drawing-off gas, suppress the gas in goaf and gush out to adopting face upper corner and return airway, the guiding goaf gas is migrated to the special-purpose lane of gas.
One side of described air intake lane, return airway is equipped with respectively that air intake is gone up a hill, return air is gone up a hill and the special-purpose lane of gas; Described return air go up a hill and return airway between tailgate is arranged, also have air door on the return airway.
Described return airway and drawing-off gas are equipped with the connection roadway of regulating blast between the high-order lane.
Described treating cut eye between mining coal seam and the goaf.
The utility model has the advantages that: this system utilizes high-order tail lane, increase the remittance of leaking out in goaf, change the gas accumulation mode of U-shaped ventilation system, reach in the ventilation system negative pressure (or) assist under the extraction suction function, form height biased " E " type work plane air force system, can effectively solve face upper corner angle methane accumulation problem.Adopt this kind method to solve upper corner and return airway gas exceeding limit problem, reduced the goaf and leaked out, be conducive to the control of goaf coal spontaneous combustion.And can reduce the lane group maintenance issues that the lane is stayed in the goaf, and use manpower and material resources sparingly, increase economic efficiency.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is the utility model structural representation;
Fig. 2 is Figure 1A-A sectional view;
Fig. 3 is Figure 1B-B sectional view;
Among the figure: 1, air intake is gone up a hill, and 2, return air goes up a hill, 3, the special-purpose lane of gas, 4, the air intake lane, 5, cut eye, 6, return airway, 7, tailgate, 8, air door, 9, connection roadway, 10, the high-order lane of drawing-off gas, 11, treat mining coal seam, 12, the goaf, 13, rock stratum, top, coal seam.
The specific embodiment
As shown in the figure: the high biased E type ventilation system of a kind of coal-face, in treating bank 11, be furnished with air intake lane 4, return airway 6, be equipped with the high-order lane 10 of a drawing-off gas between described return airway, the air intake lane in the close rock stratum, top, coal seam 12 of return airway, form high biased " E " type ventilation system of " advances two times ", by regulating air quantity and the blast in the high-order lane 10 of return airway 6 and drawing-off gas, suppress the gas in goaf 12 and gush out to adopting face upper corner and return airway, the guiding goaf gas is migrated to the special-purpose lane 3 of gas.
One side of described air intake lane, return airway is equipped with respectively that air intake goes up a hill 1, return air is gone up a hill 2 and the special-purpose lane 3 of gas; Described return air go up a hill and return airway between tailgate 7 is arranged, also have air door 8 on the return airway.
Described return airway 6 and drawing-off gas are equipped with the connection roadway 9 of regulating blast between the high-order lane.
Described treat to cut between mining coal seam 11 and the goaf 12 eye 5.
Claims (4)
1. the high biased E type ventilation system of a coal-face, in treating bank (11), be furnished with air intake lane (4), return airway (6), it is characterized in that: described return airway, be equipped with the high-order lane (10) of a drawing-off gas between the air intake lane in the close rock stratum, top, coal seam (12) of return airway, form high biased " E " type ventilation system of " advances two times ", by regulating air quantity and the blast in the high-order lane of return airway (6) and drawing-off gas (10), suppress the gas in goaf (12) and gush out to adopting face upper corner and return airway, the guiding goaf gas is migrated to the special-purpose lane (3) of gas.
2. the high biased E type ventilation system of a kind of coal-face according to claim 1 is characterized in that: a side of described air intake lane, return airway is equipped with respectively that air intake is gone up a hill (1), return air is gone up a hill (2) and gas special use lane (3); Described return air go up a hill and return airway between tailgate (7) is arranged, also have air door (8) on the return airway.
3. the high biased E type ventilation system of a kind of coal-face according to claim 1 is characterized in that: the connection roadway (9) that is equipped with the adjusting blast between the high-order lane of described return airway (6) and drawing-off gas.
4. the high biased E type ventilation system of a kind of coal-face according to claim 1 is characterized in that: describedly treat to cut between mining coal seam (11) and goaf (12) (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320053297 CN203161272U (en) | 2013-01-30 | 2013-01-30 | High-position similar-E-shaped ventilation system for coal face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320053297 CN203161272U (en) | 2013-01-30 | 2013-01-30 | High-position similar-E-shaped ventilation system for coal face |
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| CN203161272U true CN203161272U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320053297 Expired - Fee Related CN203161272U (en) | 2013-01-30 | 2013-01-30 | High-position similar-E-shaped ventilation system for coal face |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075173A (en) * | 2013-01-30 | 2013-05-01 | 江苏建筑职业技术学院 | High-position inclined E-type ventilation system of coal face |
| WO2015103861A1 (en) * | 2014-01-09 | 2015-07-16 | 中国矿业大学 | Method for extracting gas by drilling hole in gob-side entry retaining y-type ventilation high-position return airway |
| CN105041374A (en) * | 2015-04-04 | 2015-11-11 | 西安科技大学 | Method for preventing and controlling gas and coal fire together in high-gas close-distance coal seam goaf |
| CN107725097A (en) * | 2017-10-31 | 2018-02-23 | 中国矿业大学(北京) | Method is controlled altogether without coal pillar mining gas and coal spontaneous combustion in a kind of Qie Dingcheng lanes |
| CN109083674A (en) * | 2018-10-30 | 2018-12-25 | 中国矿业大学(北京) | A kind of safety clean ventilating system suitable for cutting top 110 engineering method of release exploitation working face |
-
2013
- 2013-01-30 CN CN 201320053297 patent/CN203161272U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075173A (en) * | 2013-01-30 | 2013-05-01 | 江苏建筑职业技术学院 | High-position inclined E-type ventilation system of coal face |
| WO2015103861A1 (en) * | 2014-01-09 | 2015-07-16 | 中国矿业大学 | Method for extracting gas by drilling hole in gob-side entry retaining y-type ventilation high-position return airway |
| CN105041374A (en) * | 2015-04-04 | 2015-11-11 | 西安科技大学 | Method for preventing and controlling gas and coal fire together in high-gas close-distance coal seam goaf |
| CN107725097A (en) * | 2017-10-31 | 2018-02-23 | 中国矿业大学(北京) | Method is controlled altogether without coal pillar mining gas and coal spontaneous combustion in a kind of Qie Dingcheng lanes |
| CN109083674A (en) * | 2018-10-30 | 2018-12-25 | 中国矿业大学(北京) | A kind of safety clean ventilating system suitable for cutting top 110 engineering method of release exploitation working face |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130828 Termination date: 20140130 |