CN103075173A - High-position inclined E-type ventilation system of coal face - Google Patents
High-position inclined E-type ventilation system of coal face Download PDFInfo
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- CN103075173A CN103075173A CN2013100361240A CN201310036124A CN103075173A CN 103075173 A CN103075173 A CN 103075173A CN 2013100361240 A CN2013100361240 A CN 2013100361240A CN 201310036124 A CN201310036124 A CN 201310036124A CN 103075173 A CN103075173 A CN 103075173A
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Abstract
The invention relates to a ventilation system, of which the gas of an upper corner and a ventilation roadway is ultra-limit on a coal face, in particular to a high-position inclined E-type ventilation system of the coal face, and belongs to the technical field of coal mine safety equipment. A gas discharging high-position tunnel is formed between the ventilation roadway and an intake airway closed to a coal seam upper rock layer of the ventilation roadway, so as to form the high-position inclined E-type ventilation system with one intake airway and two ventilation roadways; the gas of a goaf can be restrained from pouring out to the upper corner and the ventilation roadway through adjusting the air quantity and air pressure of the ventilation roadway and the gas discharging high-position tunnel; and the gas of the goaf can be introduced to migrate to a gas special tunnel. The system uses a high-position tail tunnel, so that air leak congruence of the goaf is increased, and the gas accumulation of a U-type ventilation system is changed; and under the negative pressure of the ventilation system and/or the auxiliary extraction negative pressure functions, a high-position inclined E-type work face air power system is formed, so that the gas accumulation problem of the upper corner on the work face can be effectively solved.
Description
Technical field
The present invention relates to the ventilation system of a kind of coal-face upper corner and return airway gas exceeding limit, be specifically related to the high biased E type ventilation system of a kind of coal-face, belong 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, make the face Gas of adopting have high strength, large quantity and gush out the characteristics such as unbalanced, fully mechanized coal face is because mining height is large simultaneously, adopt and grow up, strike length is large, thereby the goaf area is large, cause return and local gas (especially upper corner) to transfinite seriously, safety in production has been consisted of great threat.
The U-shaped ventilation system of work plane that generally adopts at present has a strong impact on the normal 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 be difficult to effective control, generally can only be by pumping in advance the gas emission of little coal.Compare with coal breakage with rib, the goaf relative complex of gushing out, the space that gushes out is also larger.By to the research of stope ventilation system mode and the research of stope Gas Emission Law, can more effectively take corresponding measure, administer goaf and the gas of adopting face.For the larger 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 objective of the invention is for overcoming above-mentioned the deficiencies in the prior art part, provide 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 Gas Moving in Worked-out Area is to the special-purpose lane of gas.The erecting dense individual props space is large behind the mining in combined mining thick coal seam working face mining, 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, unique passage that goaf air leaking stream carries the high concentration gas discharge is the fully-mechanized mining working upper corner, 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 larger, 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 special-purpose drawing-off gas of " safety regulations in coal mine " regulation lane gas density is controlled at below 2.5% and gets final product, and 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 Gas Moving in Worked-out Area is 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.
Advantage of the present invention is: 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 high biased " E " type work plane aerodynamic 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 goaf air leaking, be conducive to the control of goaf coal spontaneous combustion.And can reduce the lane side 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 present invention is described in further detail:
Fig. 1 is structural representation of the present invention;
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 Gas Moving in Worked-out Area is 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 Gas Moving in Worked-out Area is 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).
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| CN2013100361240A CN103075173A (en) | 2013-01-30 | 2013-01-30 | High-position inclined E-type ventilation system of coal face |
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| CN2013100361240A CN103075173A (en) | 2013-01-30 | 2013-01-30 | High-position inclined E-type ventilation system of coal face |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362514A (en) * | 2013-08-08 | 2013-10-23 | 六盘水师范学院 | Speedy tunneling method for gas drainage roadway |
| CN103557026A (en) * | 2013-10-28 | 2014-02-05 | 煤科集团沈阳研究院有限公司 | Method for removing upper corner gas based on pipe-jacking tunneling device |
| CN104481568A (en) * | 2014-09-15 | 2015-04-01 | 辽宁工程技术大学 | Fully mechanized caving face gob-side entry retaining process and ventilating method |
| CN104729560A (en) * | 2015-01-20 | 2015-06-24 | 河南理工大学 | Determination method for distribution of along-the-way air leakage of stoping working face of coal mine |
| CN104975857A (en) * | 2015-05-21 | 2015-10-14 | 中国矿业大学(北京) | Full well work area section non-pillar goaf-side-drift-free coal mining method |
| CN109915198A (en) * | 2019-04-16 | 2019-06-21 | 河南理工大学 | Coal working face advance borehole full blast presses drawing-off gas method |
| CN111594250A (en) * | 2020-05-22 | 2020-08-28 | 淮南矿业（集团）有限责任公司顾桥煤矿 | Ventilation method of roadway arrangement system for solving multiple disasters of deep well working face |
| CN111594251A (en) * | 2020-05-22 | 2020-08-28 | 淮南矿业（集团）有限责任公司顾桥煤矿 | Ventilation method for roadway layout system of deep well working surface |
| CN115839240A (en) * | 2023-02-23 | 2023-03-24 | 煤炭工业太原设计研究院集团有限公司 | Coal mining method of continuous mining machine for high-gas mine corner coal |
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2013
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362514B (en) * | 2013-08-08 | 2015-06-03 | 六盘水师范学院 | Speedy tunneling method for gas drainage roadway |
| CN103362514A (en) * | 2013-08-08 | 2013-10-23 | 六盘水师范学院 | Speedy tunneling method for gas drainage roadway |
| CN103557026B (en) * | 2013-10-28 | 2015-12-30 | 煤科集团沈阳研究院有限公司 | A kind of method solving gas at upper corner based on push pipe mole |
| CN103557026A (en) * | 2013-10-28 | 2014-02-05 | 煤科集团沈阳研究院有限公司 | Method for removing upper corner gas based on pipe-jacking tunneling device |
| CN104481568A (en) * | 2014-09-15 | 2015-04-01 | 辽宁工程技术大学 | Fully mechanized caving face gob-side entry retaining process and ventilating method |
| CN104481568B (en) * | 2014-09-15 | 2016-08-31 | 辽宁工程技术大学 | A kind of fully mechanized coal face gob side entry retaining technique and method of ventilation |
| CN104729560A (en) * | 2015-01-20 | 2015-06-24 | 河南理工大学 | Determination method for distribution of along-the-way air leakage of stoping working face of coal mine |
| CN104975857A (en) * | 2015-05-21 | 2015-10-14 | 中国矿业大学(北京) | Full well work area section non-pillar goaf-side-drift-free coal mining method |
| CN109915198A (en) * | 2019-04-16 | 2019-06-21 | 河南理工大学 | Coal working face advance borehole full blast presses drawing-off gas method |
| CN109915198B (en) * | 2019-04-16 | 2020-04-28 | 河南理工大学 | Full-wind-pressure gas discharge method for advanced drilling of coal face |
| CN111594250A (en) * | 2020-05-22 | 2020-08-28 | 淮南矿业（集团）有限责任公司顾桥煤矿 | Ventilation method of roadway arrangement system for solving multiple disasters of deep well working face |
| CN111594251A (en) * | 2020-05-22 | 2020-08-28 | 淮南矿业（集团）有限责任公司顾桥煤矿 | Ventilation method for roadway layout system of deep well working surface |
| CN115839240A (en) * | 2023-02-23 | 2023-03-24 | 煤炭工业太原设计研究院集团有限公司 | Coal mining method of continuous mining machine for high-gas mine corner coal |
| CN115839240B (en) * | 2023-02-23 | 2023-04-21 | 煤炭工业太原设计研究院集团有限公司 | Coal mining method of continuous miner for high-gas mine corner coal |
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Application publication date: 20130501 |