CN104632224B - Shortwall hydraulic mining method along strike - Google Patents
Shortwall hydraulic mining method along strike Download PDFInfo
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- CN104632224B CN104632224B CN201410843124.6A CN201410843124A CN104632224B CN 104632224 B CN104632224 B CN 104632224B CN 201410843124 A CN201410843124 A CN 201410843124A CN 104632224 B CN104632224 B CN 104632224B
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- E21—EARTH DRILLING; MINING
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- E21C45/00—Methods of hydraulic mining; Hydraulic monitors
Abstract
The invention provides a shortwall hydraulic mining method along strike and belongs to the technical field of coal mining. The mining method is used for solving the problems of difficult face ventilation, serious gas harm, imperfect ventilation system, poor operation safety, unavailability for coal seams with high gas and serious spontaneous combustion tendency, relatively narrow application range, low recovery ratio and the like of the traditional hydraulic mining methods. According to the shortwall hydraulic mining method along strike, stope ventilation is focused and the arrangement of a hydraulic mining tunnel and the support pattern of the working face are improved, and therefore, a mining method conforming to ventilation and gas control requirements is established. The shortwall hydraulic mining method along strike is reasonable in process design, safe and reliable, and capable of well meeting the requirements of the underground hydraulic mining operations; as a result, the effective support for an exposed roof on the hydraulic mining face and the reasonable ventilation of the working face are realized, and the coal mining efficiency and the operational safety are remarkably improved.
Description
Technical field
The invention belongs to technical field of coal exploitation, it is to be related to a kind of underground coal mine coal-mining method, more particularly to a kind of
Tilt hard-to-recovery reserve moves towards shortwall hydraulic coal-mining technology, is that hydraulic coal mining face-airing safely provides effective guarantee.
Background technology
Existing coal-mining method has mechanical coal-mining method, hydraulic mining method, blasting coal mining method etc..Big or unstable at some inclination angles
Coal seam conditions under cannot using mechanical coal-mining method when, frequently with blasting coal mining method and hydraulic mining method.Hydraulic mining method, is profit
Crush coal body with high-pressure water jet, and complete the mechanical coal mining technology of the operations such as its transport, lifting by waterpower.
The feature of hydraulic coal mining: carry out coal breakage fortune coal with water jet, personnel need not enter working face, simplify working face and prop up
The operations such as shield, roof control and shipment operation, make coal mining activity operation simplify；Meanwhile, waterpower fortune, carry mine can be made to fill, transport, carry
Rise operation and realize centralization, simplify shaft production link.
According to patent document report, hydraulic mining method mainly has: " nobody Chinese patent for cn1189641c for the notification number go into the well
Boring hydraulic coal-mining technology and its special purpose device ", it is cut down coal using high-pressure water jet, recycles gas lift reverse circulation work
Skill, is transported to earth's surface although the method is gone into the well without personnel after the coal cutting down and water mixing through dreg returning barrel, but coal is adopted
Go out that rate is low, coal mining poor process control is it is impossible to adapt to the exploitation of complicated seam；Publication No. is the Chinese patent of cn102777183a
" a kind of base plate lane hydraulic coal mining technology ", it tunnels rock gangway in the higher rock stratum of seat earth intensity, throws water hole upwards into along top board
And osculum, giant and big flow low pressure hydraulic giant are installed in inlet opening, coal breakage are cut by waterpower, when top board substantially sinks
Or when being caving, withdraw from the giant in inlet opening and big flow low pressure hydraulic giant, close inlet opening, repeat same way, use it
He organizes boring back production respective regions tectonic soft coal, and this coal winning technology has Gas Outburst danger and takes out it is necessary to carry out coal-bed gas
Adopt, and when back production regional extent is larger in fact it could happen that the phenomenon such as roof caving sinking, there is potential safety hazard.And other are opened
Adopt the coal-mining method of half-edge coal seam, how using the blasting process more falling behind or pneumatic pick, pickaxe mode coal breakage, because rib is easy
In wall caving, also it is difficult in coal seam back production using modernization fully mechanized mining, the level of production is low, in the technique such as coal breakage transport, there is coal
The danger such as dust concentration severe overweight, initiation gas and dust explosion.
The coal seam that conventional hydraulic is mined to complex geologic conditions, adopts the coal mining form of little stage shortwall non-support more, returns
Adopt face non-support coal breakage space and emit real space holding full exhaust ventilation state with return airway using hard side side and not yet；Even if
During the shooting operation of hydraulic control hydraulic giant, air quantity can increased, and air quantity or limited is altered in erecting dense individual props spoil space, and Ileal neobladder no props up
Shield coal breakage space normal through distinguished and admirable, and cannot rely solely on the air quantity of secondary fan's press-in and also be difficult to dilute harmful gas
Body.Due to the hydraulic coal mining ventilating system defect of itself, thus often result in gas exceeding limit, the safety in production to working face is constituted
Threaten.
Apply ventilation difficulty, the Yi Zao of hydraulic coal-mining technology presence for the serious coal seam of high methane, spontaneous combustion tendency
The problems such as become gas hazard, is attached most importance to stope ventilation, improves the arrangement in hydraulic coal mining tunnel and the support pattern of working face,
Progressively grope to meet ventilation, the coal-mining method of improvement gas requirement, the enforcement hydraulic coal mining of high methane inflammable seam is had important
Meaning.
Content of the invention
The problem existing for prior art, the present invention provides one kind to move towards shortwall hydraulic coal-mining technology.This coal-mining method
Solve existing conventional hydraulic coal-mining method face-airing difficulty, gas hazard seriously, ventilating system imperfection, job safety
Property poor, and can not use in high methane, the serious coal seam of spontaneous combustion tendency, the scope of application is narrower, the low problem of the rate of extraction.
Rationally, supporting is stable with mobile, safe and reliable, complies fully with the use condition at scene, can preferably meet well for its technological design
The requirement of lower hydraulic coal mining operation；Achieve and hydraulic coal mining working face is exposed with the effective support of top board and the reasonable of working face
Ventilation, significantly improves the efficiency of coal mining and the security of operation.
To achieve these goals, the present invention adopts the following technical scheme that one kind moves towards shortwall hydraulic coal-mining technology, including
Following steps:
Step one: treat production zone in inclined seam, the stage arranging hydraulic coal mining working face along bearing direction returns
Wind crossheading and back production crossheading, form and move towards little stage mining way, working from top down in the stage；Liquid is arranged in back production crossheading
Control hydraulic giant, the high-speed jet that hydraulic control hydraulic giant sprays is impacted from top to bottom in working face and is crushed coal body；It is arranged in hydraulic coal mining
Several frame working surface hydraulic supports of working face, the extensible canopy on its back timber is with the mobile difference after hydraulic control hydraulic giant high-speed jet coal breakage
Stretch out successively, the top board exposing after immediate support coal breakage；
Step 2: make working surface hydraulic support move forward, withdraw the extensible canopy on working surface hydraulic support back timber simultaneously, realize
Working surface hydraulic support is divided a word with a hyphen at the end of a line away certainly with propulsion of mining, and the supporting for next circulation of mining is prepared；
Step 3: the hydraulic control hydraulic giant in repeat step one and step 2 impacts and crush coal body and working surface hydraulic support
Supporting, the operation process of shifting frame, exploit to the in the stage first little bank face, stage air return way, the first little stage
Working face open-off cut eye and the first little bank face back production crossheading constitute working face return air channel；In the first little bank face exploitation
During propulsion, lean on roof side pre-plugged ventilation shaft along the first little bank face back production crossheading in goaf,
Return air channel as the second little bank face；
Step 4: the hydraulic control hydraulic giant in repeat step one and step 2 impacts and crush coal body and working surface hydraulic support
Supporting, the operation process of shifting frame, exploit to the in the stage second little bank face；During the second little bank face exploitation,
Distinguished and admirable enter the second little bank face through the second little bank face back production crossheading and cut eye, then through along the first little bank face
Back production crossheading leans on the ventilation shaft of roof side pre-plugged, windstone gate to enter exploiting field return air in goaf and goes up a hill, formed
New working face return air channel；
Step 5: the hydraulic control hydraulic giant in repeat step one and step 2 impacts and crush coal body and working surface hydraulic support
Supporting, the operation process of the pre-plugged ventilation shaft moving in frame, and step 3, the little bank face to other in the stage
Exploited；Broken fall coal body and water be mixed into coal slurry after pass back in back production crossheading chute in, and transport outward.
Described ventilation shaft adopts prefabricated sectional connected concrete duct.
Beneficial effects of the present invention:
Due to present invention employs the working face liquid being arranged in hydraulic coal mining working face, certainly can dividing a word with a hyphen at the end of a line away with coal mining propulsion
Pressure support, and during working face mining propulsion, lean on roof side pre-plugged along back production crossheading in goaf
Ventilation shaft coordinates the production operation of waterpower coal-face, so present invention process is reasonable in design, supporting is stable with mobile,
Coal-face forms rational ventilating system, and mechanization degree is higher, and continuous production is strong, it is easy to accomplish automation, favorably
In improving yield, production safety is reliable, stronger to architectonic adaptability, exploitation in high inclination-angle or wandering coal
Effect is better than other coal-mining methods.
Brief description
Fig. 1 is that the little stage coal-face of an embodiment moving towards shortwall hydraulic coal-mining technology of the present invention is illustrated
Figure；
The little bank face of in figure: 1- first, 2- stage air return way, 3- working surface hydraulic support, 4- hydraulic giant pipeline, 5-
Hydraulic control hydraulic giant, 6- goaf, 7- ventilation shaft, the little bank face back production crossheading of 8- first, the little bank face of 9- second is returned
Adopt crossheading, the little bank face of 10- second.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, one kind moves towards shortwall hydraulic coal-mining technology, comprise the steps:
Step one: treat production zone in inclined seam, along bearing direction, be in 10～20 ° of left and right corners with coal seam tendency
The pseudo- stage air return way 2 tiltedly arranging hydraulic coal mining working face of degree and back production crossheading, form and move towards little stage coal mining side
Formula, each coal seam combined layout is exploited, and coal seam single-blade or double-vane are exploited, working from top down in the stage, and the first little bank face 1 is exploited
Terminate, then exploit the second little bank face 10；Working face size is according to ocurrence of coal seam situation, and exploiting field length, stage height
The parametric synthesis such as degree determine, usual working face is inclined to length 15～20m；Hydraulic control hydraulic giant 5, hydraulic control hydraulic giant is arranged in back production crossheading
5 are connected with hydraulic giant pipeline 4, manipulate by manpower or hydraulic control system, the gun barrel of hydraulic control hydraulic giant 5 can do and vertically and horizontally rotate, liquid
The high-speed jet that control hydraulic giant 5 sprays impact from top to bottom in working face and crush coal body (if working face tendency is longer, can be to
On every 15m about set shooting position, coal breakage of shooting from top to bottom in working face, withdraw after terminating to back production crossheading, fall portion
15m coal seam)；Hydraulic coal mining working face edge is cut a direction order and is arranged several frame working surface hydraulic supports 3, and several frame working face hydraulic pressure prop up
Extensible canopy on frame 3 back timber stretches out respectively successively with mobile after hydraulic control hydraulic giant 5 high-speed jet coal breakage, after immediate support coal breakage
The top board exposing；
Step 2: so that working surface hydraulic support 3 is moved forward, withdraw the extensible canopy on working surface hydraulic support 3 back timber simultaneously, real
Existing working surface hydraulic support 3 is divided a word with a hyphen at the end of a line away certainly with propulsion of mining, and the supporting for next circulation of mining is prepared；
Step 3: the hydraulic control hydraulic giant 5 in repeat step one and step 2 impacts and crush coal body and working surface hydraulic support 3
Supporting, move frame operation process, the in the stage first little bank face 1 is exploited, stage air return way 2, first is little
Bank face 1 cuts eye and the first little bank face back production crossheading 8 constitutes working face return air channel；In the first little stage work
During the exploitation propulsion of face 1, lean on roof side pre-plugged along the first little bank face back production crossheading 8 in goaf 6
Ventilation shaft 7, as the return air channel of the second little bank face 10, it is to avoid stage air return way 2 is due to top board after exploitation
Block across falling, affect working face return air；
Step 4: the hydraulic control hydraulic giant 5 in repeat step one and step 2 impacts and crush coal body and working surface hydraulic support 3
Supporting, move frame operation process, the in the stage second little bank face 10 is exploited；Second little bank face 10 is opened
When adopting, distinguished and admirable enter the second little bank face 10 through the second little bank face back production crossheading 9 and cut eye, then through along the first little rank
Section working face extraction crossheading 8 leans on the ventilation shaft 7 of roof side pre-plugged, windstone gate to enter exploiting field and return in goaf 6
Wind is gone up a hill, and forms new working face return air channel；
Step 5: the hydraulic control hydraulic giant 5 in repeat step one and step 2 impacts and crush coal body and working surface hydraulic support 3
Supporting, move frame, and step 3 in pre-plugged ventilation shaft 7 operation process, to work of the little stage of other in the stage
Exploited as face；Broken fall coal body and water be mixed into coal slurry after pass back in back production crossheading chute in, and come together in exploiting field
Or the coal slurry sump of mine, coal slurry coal slime pump or other modes are transported to ground evaporation plant or coal preparation plant, after treatment, outside coal
Fortune, clarification of water is multiplexed.
Described ventilation shaft 7 adopts prefabricated sectional connected concrete duct.
Claims (2)
1. one kind moves towards shortwall hydraulic coal-mining technology it is characterised in that comprising the steps:
Step one: treat production zone in inclined seam, arrange that along bearing direction the stage return air of hydraulic coal mining working face is suitable
Groove and back production crossheading, form and move towards little stage mining way, working from top down in the stage；Hydraulic control water is arranged in back production crossheading
Rifle, the high-speed jet that hydraulic control hydraulic giant sprays is impacted from top to bottom in working face and is crushed coal body；It is arranged in hydraulic coal mining work
Several frame working surface hydraulic supports in face, the extensible canopy on its back timber is with the mobile difference after hydraulic control hydraulic giant high-speed jet coal breakage successively
Stretch out, the top board exposing after immediate support coal breakage；
Step 2: make working surface hydraulic support move forward, withdraw the extensible canopy on working surface hydraulic support back timber simultaneously, realize work
Face hydraulic support is divided a word with a hyphen at the end of a line away certainly with propulsion of mining, and the supporting for next circulation of mining is prepared；
Step 3: the hydraulic control hydraulic giant in repeat step one and step 2 impact and crush coal body and working surface hydraulic support
Shield, the operation process of shifting frame, exploit to the in the stage first little bank face, stage air return way, the first little stage work
Cut eye as face and the first little bank face back production crossheading constitutes working face return air channel；Push away in the first little bank face exploitation
During entering, lean on roof side pre-plugged ventilation shaft along the first little bank face back production crossheading in goaf, make
Return air channel for the second little bank face；
Step 4: the hydraulic control hydraulic giant in repeat step one and step 2 impact and crush coal body and working surface hydraulic support
Shield, the operation process of shifting frame, exploit to the in the stage second little bank face；During the second little bank face exploitation, wind
Flow through second little bank face back production crossheading entrance the second little bank face and cut eye, then through returning along the first little bank face
Adopting crossheading leans on the ventilation shaft of roof side pre-plugged, windstone gate to enter exploiting field return air and go up a hill in goaf, is formed new
Working face return air channel；
Step 5: the hydraulic control hydraulic giant in repeat step one and step 2 impact and crush coal body and working surface hydraulic support
Shield, the operation process of the pre-plugged ventilation shaft moving in frame, and step 3, to other in the stage, little bank face is entered
Row exploitation；Broken fall coal body and water be mixed into coal slurry after pass back in back production crossheading chute in, and transport outward.
2. according to claim 1 move towards shortwall hydraulic coal-mining technology it is characterised in that described ventilation shaft is using pre-
The sectional connected concrete duct of system.
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| CN201410843124.6A CN104632224B (en) | 2014-12-30 | 2014-12-30 | Shortwall hydraulic mining method along strike |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816352A (en) * | 2017-10-16 | 2018-03-20 | 安徽理工大学 | A kind of method of the hard thick top plate pressure relief erosion control of waterpower cutting |
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| CN105804747B (en) * | 2016-03-14 | 2018-02-27 | 西安科技大学 | A kind of ultra-thin coal seam waterpower bores the mining method that pops |
| CN110656937B (en) * | 2019-10-29 | 2020-08-04 | 中国矿业大学 | Fluidized coal gas simultaneous mining system and method |
| CN112127890B (en) * | 2020-09-23 | 2023-05-16 | 贵州大学 | High-pressure water drill exploitation device for steeply inclined coal seam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4878712A (en) * | 1988-09-09 | 1989-11-07 | Wang Fun Den | Hydraulic method of mining coal |
| CN101307692B (en) * | 2008-07-14 | 2010-08-18 | 邹开科 | Sharply inclined coal seam mining method |
| CN101852081A (en) * | 2010-03-18 | 2010-10-06 | 盘江煤电(集团)煤矿设计研究院有限公司 | Down-dip mining method of large inclination three- soft coal seam |
| CN103089269B (en) * | 2013-01-23 | 2015-03-11 | 中国矿业大学 | Method for cutting and pre-breaking top coal to improve mining efficiency by utilizing water power |
| CN103362511B (en) * | 2013-07-25 | 2015-08-05 | 山东科技大学 | High-dipping medium-thickness seam step is without pillar working |
| CN103485786B (en) * | 2013-09-11 | 2016-01-20 | 太原理工大学 | A kind of half-edge coal seam moves towards longwall machinery and melts mining method |
| CN103953343B (en) * | 2014-04-03 | 2016-03-30 | 太原理工大学 | A kind of method coal seam tight roof being controlled to caving |
| CN104088643B (en) * | 2014-06-30 | 2016-05-11 | 山东科技大学 | A kind of high-dipping point blank coal seam Sub-Level Caving coal-mining method |
| CN104088642B (en) * | 2014-06-30 | 2016-06-08 | 山东科技大学 | A kind of super Shortwall mining method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107816352A (en) * | 2017-10-16 | 2018-03-20 | 安徽理工大学 | A kind of method of the hard thick top plate pressure relief erosion control of waterpower cutting |
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Effective date of registration: 20201118 Address after: No.15 Binhe Road, Shenfu New District, Shenyang, Liaoning Province 110000 Patentee after: Shenyang Tian'an special robot Co.,Ltd. Address before: 113122 Binhe Road, Fushun Economic Development Zone, Liaoning 15, China Patentee before: LIAONING TIANAN TECHNOLOGY Co.,Ltd. |
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