CN101832150B - Ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame - Google Patents
Ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame Download PDFInfo
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- CN101832150B CN101832150B CN 201010151800 CN201010151800A CN101832150B CN 101832150 B CN101832150 B CN 101832150B CN 201010151800 CN201010151800 CN 201010151800 CN 201010151800 A CN201010151800 A CN 201010151800A CN 101832150 B CN101832150 B CN 101832150B
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Abstract
The invention relates to a protection process for coal mining, in particular to an ultra thick coal bed fully mechanized underground mining protection process and a special protection supporting frame. The ultra thick coal bed fully mechanized underground mining protection process comprises the following steps that: the back side of a coal face is provided with a working channel, a transportation lane and a coal conveying lane are arranged along both sides of the working channel, the front parts of the two lanes are communicated with each other and also communicated with an air inlet; the back parts of the two lanes are communicated with each other at the working channel, and outside air is charged in a well by jointly using the two lanes as an air inlet channel; the upper part at the top of the working face is provided with an air return channel, and the air inlet channel and the air return channel are communicated with each other at the back side the working channel; and multiple groups of supporting frames are supported on the top part of a working face and between the working channel and the communicated part of the air inlet channel and the air return channel.. In the process, the venting lanes are reasonably arranged, so that harmful gases such as methane gas in the lanes can be smoothly emptied, conditions of the venting lanes on the upper part can be monitored in real time, and the early-warning function is well realized; and the supporting frames can effectively avoid the phenomena of roof fall in front of frames and coal leakage in the frames.
Description
One, technical field: the present invention relates to a kind of coal mining process for protecting, relate in particular to ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame.
Two, background technology: coal mining technique by storage technique change into combine adopt operation after; often can face following problem: 1, the top board situation can't be monitored; at the top board place once breaking out of fire; when mining face under mine is found the condition of a fire; had little time to control the intensity of a fire; can only shift equipment and personnel rapidly this moment, fire damage is down to minimum.But because support bracket is when being in high temperature of fire, seal washer can melt rapidly, causes the support bracket releasing pressure automatically to be retracted, and top board drops, and equipment causes damage because weight, volume can't in time shift in the short time greatly.2, three tunnels of employing, former work plane plane, article three, in the tunnel, especially pile up in the adit in the middle of a large amount of cables, pipeline, rehandle facilities are arranged, cause the tunnel utilization rate low, coal mining efficient is low, is positioned at the air intake lane of both sides and the tunnel, termination of return airway and assembles easily gas, in order to prevent danger, can only install corresponding ventilation equipment within it, certainly will increase financial burden, reduce lane space.3, roof is to be supported by support bracket, because it is without blocking, without replacing, move frame and fall on the lower and the monomer past reach in strong top frame between frame, be very easy to damage equipment, the monomer landing event of hurting sb.'s feelings also appears easily, when running into zone of fracture, also can occur emitting leakage before the frame, scrapper conveyor be buried extremely easily, and cause stopping production, cleaning work is time-consuming, effort then.
Three, summary of the invention: it is smooth and easy to the object of the invention is to propose a kind of ventilation, can accomplish warning in advance to fire, and it is convenient, fast that top board moves frame, and the tunnel utilization rate is high, improves ultra thick coal bed fully mechanized underground mining protection process and the special protection supporting frame of coal mining efficient.
The object of the present invention is achieved like this: ultra thick coal bed fully mechanized underground mining protection process comprises: lay forward and backward scraper-trough conveyer at the coal face place, set up cutting coal machine on the front scraper-trough conveyer, rear scraper-trough conveyer place sets up scratch board conveyor.The coal face rear side is opened service aisle, offers transportation lane and defeated coal road along the service aisle both sides, and two lanes are anterior to be communicated with, with the air intake conducting.Transportation lane and defeated coal road rear portion are communicated with at the service aisle place, and transportation lane and defeated coal road are common as carrying outside air for air inlet duct in well.Air-return duct is offered on top on the work plane top, air-return duct air outlet place installing induced draft fan.Air inlet duct and air-return duct are in the rear side conducting of service aisle.At the service aisle rear side, the front side of air inlet duct and air-return duct conducting place, place, work plane top are supported with many group bracing frames.
Bracing frame is by support bracket, exchange frame, and long beam, short beam and the steel band net laid thereon form.Two long beams are parallel laying, exchange frame and lay along long beam length direction, and the bottom surface in long beam is held in the palm on the top.Between Liang Changliang, carry on a shoulder pole to have and be no less than two short beam.Lay the steel band net at short beam, steel band is laid top board on the net, and the top board holder is pushed up in work plane.In the short beam subiculum supporting plate is arranged, supporting plate lower support support bracket.
The present invention is by the Reasonable Arrangement airway so that in the tunnel in the pernicious gas such as gas can need not ventilation equipment can be smooth and easy emptying, guarantee underground work personnel's safety.This kind laying mode, offer the crosscut that is communicated with the leg space ventilation road in bottom surface, overdraught road, can accomplish Real Time Monitoring to the situation in the overdraught road, fire, permeable, gas leakage are played good warning function, personnel and equipment are in time shifted provides grace time.Bottom surface, overdraught tunnel, namely face roof uses support bracket and exchanges frame and with the suspension device supporting of steel band net, can effectively prevent roof fall before the frame, leaks the coal phenomenon in the frame.
Four, description of drawings: concrete structure of the present invention is provided by following drawings and Examples:
Fig. 1 is the ultra thick coal bed fully mechanized underground mining protection process structural representation;
Fig. 2 is lower ventilation stack plan structure schematic diagram;
Fig. 3 is the support frame structure schematic diagram.
Legend: 1, steel band net, 2, top board, 3, crosscut, 4, air-return duct, 5, the work plane top, 6, air inlet duct, 7, Chang Liang, 8, exchange frame, 9, slide, 10, slide rail, 11, support bracket, 12, supporting plate, 13, short beam, 14, rear scraper-trough conveyer, 15, service aisle, 16, front scraper-trough conveyer, 17, cutting coal machine, 18, transportation lane, 19, coal face, 20, air intake, 21, defeated coal road, 22, bunching, 23, crushing engine, 24, link, 25, hook.
Five, the specific embodiment:
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
Embodiment: shown in Fig. 1-2, ultra thick coal bed fully mechanized underground mining protection process comprises: locate to lay forward and backward scraper-trough conveyer (16), (14) at coal face (19), set up cutting coal machine (17) on the front scraper-trough conveyer (16), rear scraper-trough conveyer (14) locates to set up scratch board conveyor.Coal face (19) rear side is opened service aisle (15), offers transportation lane (18) and defeated coal road (21) along service aisle (15) both sides, and two lanes are anterior to be communicated with, with air intake (20) conducting.Transportation lane (18) and defeated coal road (21) rear portion are located to be communicated with at service aisle (15), transportation lane (18) is as the tunnel of carrying material and instrument in well, lay crushing engine and hydraulic power unit bunching in the defeated coal road (21), as outwards defeated coal road road, scratch board conveyor links to each other with crushing engine.Transportation lane (18) and defeated coal road (21) are common as carrying outside air for air inlet duct (6) in well.Air-return duct (4) is offered on top on work plane top (5), air-return duct (4) air outlet place installing induced draft fan.Air-return duct (4) bottom surface offers crosscut (3), and installing temperature, gas sensor in the crosscut (3) are in order to monitor gas density and other security situations.Air inlet duct (6) and air-return duct (4) are in the rear side conducting of service aisle (15).At service aisle (15) rear side, the front side of air inlet duct (6) and air-return duct (4) conducting place, many group bracing frames are located to be supported with in work plane top (5), the slide rail (10) of before and after service aisle (15) is located to be equipped with, arranging, and supporting frame is thereon.
By air inlet duct (6) and the air-return duct (4) of arranging up and down, after outside air is entered by air intake (20), enter work plane via air inlet duct (6), discharged by air-return duct (4) subsequently, it is smooth and easy that the structure of arranging so up and down can guarantee that all places, down-hole all ventilate, and guarantees the methane accumulation situation can not occur.
Shown in Fig. 1,3, bracing frame is by support bracket (11), exchange frame (8), and long beam (7), short beam (13) and the steel band net (1) laid thereon form.Support bracket (11) and exchange frame (8) adopt hydraulic support.Long beam (7) is i iron, and short beam (13) is channel-section steel.Two long beams (7) are parallel laying, exchange frame (8) Shun Changliang (7) length direction and lay, and hold in the palm in the bottom surface of Chang Liang (7) on the top.Load has the short beam (13) that is no less than two, spacing 1.2m between short beam between Liang Changliang (7).Lay steel band net (1) at short beam (13), the upper top board of laying of steel band net (1) can be laid rubber cushion between steel band net (1) and top board, also can not lay, and the top board holder is in work plane top (5).In short beam (13) subiculum supporting plate (12) is arranged, supporting plate (12) lower support support bracket (11), support bracket (11) is positioned at and exchanges between frame (8), and both all install slide (9) in the bottom, and slide (9) seat is on slide rail (10).
Steel band net (1) is articulated in turn by the netted steel mesh of polylith and forms, and every steel mesh front and back ends is installed respectively one to one connector, and described connector is hook (25) and link (24).The connector of steel mesh front end is connected the connector of steel mesh rear end, front side with being arranged in thereafter.
In moving the frame process, first support bracket (11) is fallen, promoting support bracket (11) moves forward, after support bracket (11) moves to assigned address, with supporting plate (12) jack-up, lay in advance short beam (13) and steel band net (1) on the supporting plate (12), support bracket (11) is with short beam (13) dieback subsequently.After support bracket (11) is fixing with short beam (13), to exchange frame (8) again and fall, long beam (7) exchanges frame (8) and rises after moving to short beam (13) below with exchange frame (8), long beam (7) holds in the palm in short beam (13) bottom surface, further reinforces.
Above technical characterictic has consisted of most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs inessential technical characterictic, satisfies the needs of different situations.
Claims (10)
1. ultra thick coal bed fully mechanized underground mining protection process, before coal face (19) is located to lay, rear scraper-trough conveyer (16,14), set up cutting coal machine (17) on the front scraper-trough conveyer (16), rear scraper-trough conveyer (14) locates to set up scratch board conveyor, coal face (19) rear side is opened service aisle (15), it is characterized in that: offer transportation lane (18) and defeated coal road (21) along service aisle (15) both sides, two lanes are anterior to be communicated with, with air intake (20) conducting, transportation lane (18) and defeated coal road (21) rear portion are located to be communicated with at service aisle (15), transportation lane (18) and defeated coal road (21) are carried outside air as air inlet duct (6) jointly in well, air-return duct (4) is offered on top on work plane top (5), air-return duct (4) air outlet place installing induced draft fan, air inlet duct (6) and air-return duct (4) are in the rear side conducting of service aisle (15), at service aisle (15) rear side, many group bracing frames are located to be supported with in the front side of air inlet duct (6) and air-return duct (4) conducting place, work plane top (5).
2. ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 1, it is characterized in that: transportation lane (18) is as the tunnel of carrying material and instrument in well, lay crushing engine and hydraulic power unit bunching in the defeated coal road (21), as outwards defeated coal road road, scratch board conveyor links to each other with crushing engine.
3. ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 1, it is characterized in that: air-return duct (4) bottom surface offers crosscut (3), installing temperature, gas sensor in the crosscut (3).
4. ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 1 is characterized in that: the slide rail (10) of arranging before and after service aisle (15) is located to be equipped with, supporting frame thereon.
5. the special protection supporting frame of a ultra thick coal bed fully mechanized underground mining protection process, by support bracket (11), exchange frame (8), and laying long beam (7) thereon, short beam (13) and steel band net (1) form, it is characterized in that: Liang Changliang (7) is parallel laying, exchanging frame (8) Shun Changliang (7) length direction lays, hold in the palm in the bottom surface of Chang Liang (7) on the top, load has the short beam (13) that is no less than two between Liang Changliang (7), lay steel band net (1) at short beam (13), the upper top board of laying of steel band net (1), the top board holder is in work plane top (5), in short beam (13) subiculum supporting plate (12) is arranged, supporting plate (12) lower support support bracket (11), support bracket (11) are positioned at and exchange between frame (8), both all install slide (9) in the bottom, and slide (9) seat is on slide rail (10).
6. the special protection supporting frame of ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 5 is characterized in that: support bracket (11) and exchange frame (8) employing hydraulic support.
7. the special protection supporting frame of ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 5, it is characterized in that: long beam (7) is i iron, and short beam (13) is channel-section steel.
8. the special protection supporting frame of ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 5 is characterized in that: spacing 1.2m between short beam.
9. the special protection supporting frame of ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 5, it is characterized in that: steel band net (1) is articulated in turn by the netted steel mesh of polylith and forms, every steel mesh front and back ends is installed respectively one to one connector, described connector is hook (25) and link (24), and the connector of steel mesh front end is connected the connector of steel mesh rear end, front side with being arranged in thereafter.
10. the special protection supporting frame of ultra thick coal bed fully mechanized underground mining protection process as claimed in claim 9, it is characterized in that: steel mesh is failed to grow up in 60cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010151800 CN101832150B (en) | 2010-04-21 | 2010-04-21 | Ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame |
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| CN 201010151800 CN101832150B (en) | 2010-04-21 | 2010-04-21 | Ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame |
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| CN101832150A CN101832150A (en) | 2010-09-15 |
| CN101832150B true CN101832150B (en) | 2013-02-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422870B (en) * | 2013-07-26 | 2015-09-16 | 王绍华 | Super high seam mining full height roof timbering method |
| CN104594926A (en) * | 2014-11-27 | 2015-05-06 | 太原理工大学 | Rapid composite roof roadway support method for high-stress water guiding karst cave group |
| CN106395254A (en) * | 2016-11-25 | 2017-02-15 | 攀枝花市钛海科技有限责任公司 | Protective device used for scraper |
| CN109488357B (en) * | 2018-11-20 | 2020-05-15 | 山西铭野科技有限公司 | Mechanical support device for coal mining |
| CN110645011A (en) * | 2019-09-16 | 2020-01-03 | 湖北江能水利水电建设有限公司 | Method for treating collapse and roof fall of tunnel |
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