CN103498679A - Filling and supporting synchronized fully-mechanized mining method for preventing abnormal roof weighting - Google Patents
Filling and supporting synchronized fully-mechanized mining method for preventing abnormal roof weighting Download PDFInfo
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- CN103498679A CN103498679A CN201310480121.6A CN201310480121A CN103498679A CN 103498679 A CN103498679 A CN 103498679A CN 201310480121 A CN201310480121 A CN 201310480121A CN 103498679 A CN103498679 A CN 103498679A
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Abstract
The invention relates to a filling and supporting synchronized fully-mechanized mining method for preventing abnormal roof weighting. Abnormal strata behaviors such as pillar blast and cylinder deformation occur successively to mines in China. Therefore, a reinforced hydraulic support is mounted in the middle of a working face; a high-speed powered gangue conveyor is mounted on a projecting part of the reinforced hydraulic support; while a coal cutter is started, the high-speed powered gangue conveyor is started to throw gangues to a rear middle gob of the working face; a long dam shaped gangue support pier extending in trend is formed in the middle gob; when a roof of the gob settles, the long dam shaped gangue support pier is pressed by the middle of the roof. The method has the advantages that the long dam shaped gangue support pier perpendicular to the working face is formed in the gob, the settled roof presses on the long damp shaped gangue support pier, burden of the middle hydraulic support is relieved, physical safety of mine equipment and miners is guaranteed, downhole gangues are utilized effectively and turned into wealth, and the method is widely applied to various full mechanization coal mines.
Description
Technical field
The present invention relates to the comprehensive coal-mining method of putting that a kind of filling and support synchronous mode prevention top board is pressed extremely.
Background technology
In the coal in China gross reserves, 73.2% reserves buried depth is arranged below 600m, along with continually developing of coal resources, increasing mine enters deep mining, solve the relevant key technical problems such as high-ground stress of deep mining, become China and further develop the key subjects that deepen coal resource has strategic importance.The influence factor of deep high-ground stress to recovery activity, comprise the face roof grand movement after coming from mining rate improves, and forms thunderingly acutely to press.Before the eighties in 20th century, the mechanized coal mining method of China is that common longwell comprehensive mechanical coal mining or high seam layering are combined and adopted, the Coal Mining Equipment Complement technology is since the experimental study of phase early 1980s, passed through introduction, exploration, raising and the popularization of more than ten years, realized domesticizing to the mid-90 in 20th century and combined the high-yield and high-efficiency of the equipment of putting.At present, the highest year producing coal amount of fully mechanized coal face broken through 1,000 ten thousand tons, reached the advanced level of international coal-face annual production, the mining technology has become China's high-yield and high-efficiency mine modernization construction, has realized one of Major Technology of intensive production.
In recent years, the a series of advanced science and technology of mining that mining, the exploitation of large mining height and non chain pillar entryprotection technology be representative of take is widely applied and tremendous development in China, thereby makes limit of mining, mining rate and the fltting speed of coal wall sharply increase.Fender is the successful Application at comprehensive extracting and caving face without the coal pillar mining technology even, cause vertically and the overlying strata range of movement on dimension transverse much larger than fully-mechanized mining working, strong ore deposit is pressed to manifest and is exceeded immediate roof and basic top scope, and mining induced stress field, overlying strata spatial structures Evolution that the disrumpent feelings motion of high-order competent bed causes are more complicated.On a large scale, high-intensity exploitation disturbance not only causes caving zone overlying strata strenuous exercise, and the spatial balance structure existed in goaf on every side is also by further unstability, on cover not fracture rock stratum can with the collaborative disrumpent feelings motion of work plane, thereby bring out coal rock dynamic disaster.Such as in the mining area, Yanzhou, Xin Wen mining area, Shandong, Hai Zi colliery, the Huaibei and Yima, henan Province mining area etc., all exist and cover huge thick main key stratum, formed the abnormal ore deposit of goaf top plate rock stratum large tracts of land and pressed and manifest.
Domestic many mines have occurred that the ore deposits pressures such as the column pressure is quick-fried, oil cylinder distortion manifest abnormal situation in succession: Bao Dian colliery 5308 fully mechanized coal faces of 2000 are pressed suddenly, kill 23 supports, damage 16 columns by pressure, damage 23, four connecting rod by pressure, and pipeline between frame is cut off, bring very big difficulty to production; Colliery, calendar year 2001 No. three, Jining 6301 face roof large tracts of land are pressed, and nearly 70 supports are crushed to death, the hydraulic support well damage, bracket upright post is damaged 102, front rod in quadric chain damages 33, and part bracket upright post needling snaps to be torn, and indivedual hydraulic support column bases penetrate; Within 2000, Zhangshuanglou Coal Mine of Xuzhou Mining Affaris Bureau's 7107 roof of coal face pressure anomalies increase, safety valve unlatching rate reaches more than 80%, and part column safety valve opening speed is slow, and pressure meter shows that the support maximum operation resistance reaches 40～50MPa, two column explosions, the coal wall caving degree of depth reaches 1～3m; Between year December in September, 2004 to 2006, shake accident in ore deposit has occurred three times in the Bao Dian colliery, and the shock wave that the ore deposit shake produces destroys fire dam, and impact involves the airtight fragment of brick of dishing out and causes casualties, Nan Tun ore deposit microseism platform and seismographic station, Jining are monitored and are shown, the shake activity of ore deposit, mining area is very frequent.
The fact that many fully mechanized coal face supports collapse under pressure shows, the strenuous exercise of work plane overlying rock is huge to the harm of work plane, has a strong impact on normal production.Form of coal seam, coal seam thickness, buried depth, the hydrology and engineering geological conditions, attitude of coal, geological structure, coal and the natural causes such as country rock physico-mechanical properties and chemical property, and the comprehensive function of exploitation method, stopping sequence, mining depth, goaf volume and the human factors such as form, goaf processing method thereof, be that the reason manifested is pressed in the abnormal ore deposit of fully mechanized coal face top board large tracts of land.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defect that how to overcome prior art, the comprehensive coal-mining method of putting that provides a kind of filling and support synchronous mode prevention top board extremely to press.
For solving the problems of the technologies described above, the comprehensive coal-mining method of putting that filling and support synchronous mode prevention top board of the present invention is pressed extremely, comprise the steps:
1.. excavation transportation lane, belt lane and coal-face;
2.. to coal-face, transport, hydraulic support is installed, coal-winning machine, drag conveyor, work plane is installed end hydraulic support, the work plane stage casing is installed and is reinforced hydraulic support, common hydraulic support is installed at all the other positions of work plane, in the belt lane, rubber conveyer is installed, the compressible scope of wherein reinforcing the hydraulic prop of hydraulic support is greater than the compressible scope of the hydraulic prop of common hydraulic support, reinforce the close goaf of hydraulic support one pleurapophysis for other hydraulic supports, protuberance is installed high speed power and is thrown the cash machine, and is furnished with waste conveyor, this waste conveyor is arranged in transportation lane or belt lane,
3.. starting high speed power is thrown the cash machine and is thrown the spoil piece to goaf, stage casing after work plane, when hydraulic support and work plane need to move forward, the work plane stage casing reinforces hydraulic support and at first descends, moves forward, the support fall is greater than other hydraulic supports, during the advance of the face, high speed power is thrown the cash machine and is formed across pitch in the goaf, stage casing along the long dam shape spoil support pier of stretching, and when goaf top plate sinks, the top board mid portion is pressed on long dam shape spoil support pier.
So design; when the advance of the face; sinking top board stage casing is pressed on long dam shape spoil piece support pier; form two domes in the tendency direction; alleviated the burden of reinforcing hydraulic support along the work plane stage casing; effectively avoided the ore deposits such as the column pressure is quick-fried, oil cylinder distortion to press the generation of anomaly, the greatly safety of the protection person and equipment.
As optimization, the hydraulic prop quantity of reinforcing hydraulic support is greater than the quantity of the hydraulic prop of common hydraulic support, or the hydraulic prop diameter of reinforcing hydraulic support is greater than the diameter of the hydraulic prop of common hydraulic support.
As optimization, described spoil piece maximum gauge is between 5-15cm.So design, the stone of maximum gauge≤15cm that railway bed stone is all selected.The present invention selects the spoil piece of similar specification, contributes to improve the supporting capacity of long dam shape spoil support pier, shares the burden of work plane stage casing hydraulic support, guarantees coal mine equipment and miner's personal safety.
Apply the comprehensive coal-mining method of putting that filling and support synchronous mode prevention top board of the present invention is pressed extremely, can form in goaf a shape spoil support pier of the long dam perpendicular to work plane, the top plate portion of sinking is pressed on long dam shape spoil support pier, alleviated hydraulic support, particularly the burden of the hydraulic support in work plane stage casing, guarantee coal mine equipment and miner's personal safety, effectively utilized the underground coal spoil simultaneously, spoil is turned waste into wealth, be widely used in various comprehensive coal minings ore deposit.
The accompanying drawing explanation
The comprehensive coal-mining method of putting of filling and support synchronous mode prevention top board of the present invention being pressed extremely below in conjunction with accompanying drawing is described further:
Fig. 1 is the comprehensive tunnel apparatus arrangement schematic diagram of putting coal-mining method that this filling and support synchronous mode prevention top board is pressed extremely;
Fig. 2 is the A on Fig. 1 stratum---A is to sectional view (in figure, equipment is slightly);
Fig. 3 is that Fig. 1 high speed power is thrown cash machine structural representation.
In figure: 1 for transportation lane, 2 be the belt lane, 3 for coal-face, 4 for coal-winning machine, 5 for reinforce hydraulic support, 6 for high speed power throw the cash machine, 7 for long dam shape spoil support pier, 8 be that motor, 9 goafs, 10 are coal seam.
The specific embodiment
Embodiment one: as shown in Figure 1, the comprehensive coal-mining method of putting that filling and support synchronous mode prevention top board of the present invention is pressed extremely, comprise the steps:
1.. excavation transportation lane 1, belt lane 2 and coal-face 3;
2.. to coal-face, transport, hydraulic support is installed, coal-winning machine 4, drag conveyor, work plane is installed end hydraulic support, the work plane stage casing is installed and is reinforced hydraulic support 5, common hydraulic support is installed at all the other positions of work plane, the interior installation rubber conveyer in belt lane 2, the compressible scope of wherein reinforcing the hydraulic prop of hydraulic support 5 is greater than the compressible scope of the hydraulic prop of common hydraulic support, reinforce hydraulic support 5 close goaf one pleurapophysis for other hydraulic supports, protuberance is installed high speed power and is thrown cash machine 6, and is furnished with waste conveyor, this waste conveyor is arranged in transportation lane 1 or belt lane 2,
3.. starting high speed power is thrown cash machine 6 and is thrown the spoil piece to goaf, stage casing after work plane, and when hydraulic support and work plane need to move forward, the work plane stage casing reinforces hydraulic support 5 and at first descends, move forward, and reinforcing hydraulic support 5 falls are greater than other hydraulic supports.During the advance of the face, high speed power is thrown cash machine 6 and is formed across pitch in the goaf, stage casing along the long dam shape spoil support pier 7 of stretching, and when goaf top plate sinks, the top board mid portion is pressed on long dam shape spoil support pier 7.
The hydraulic prop quantity of reinforcing hydraulic support 5 is greater than the quantity of the hydraulic prop of common hydraulic support, or the hydraulic prop diameter of reinforcing hydraulic support 5 is greater than the diameter of the hydraulic prop of common hydraulic support.Described spoil piece maximum gauge is between 5-15cm.
Claims (3)
1. the comprehensive coal-mining method of putting that filling and support synchronous mode prevention top board is pressed extremely, comprise the steps:
1.. excavation transportation lane, belt lane and coal-face;
2.. to coal-face, transport, hydraulic support is installed, coal-winning machine, drag conveyor, work plane is installed end hydraulic support, the work plane stage casing is installed and is reinforced hydraulic support, common hydraulic support is installed at all the other positions of work plane, in the belt lane, rubber conveyer is installed, the compressible scope of wherein reinforcing the hydraulic prop of hydraulic support is greater than the compressible scope of the hydraulic prop of common hydraulic support, reinforce the close goaf of hydraulic support one pleurapophysis for other hydraulic supports, protuberance is installed high speed power and is thrown the cash machine, and is furnished with waste conveyor, this waste conveyor is arranged in transportation lane or belt lane,
3.. starting high speed power is thrown the cash machine and is thrown the spoil piece to goaf, stage casing after work plane, when hydraulic support and work plane need to move forward, the work plane stage casing reinforces hydraulic support and at first descends, moves forward, the support fall is greater than other hydraulic supports, during the advance of the face, high speed power is thrown the cash machine and is formed across pitch in the goaf, stage casing along the long dam shape spoil support pier of stretching, and when goaf top plate sinks, the top board mid portion is pressed on long dam shape spoil support pier.
2. the comprehensive coal-mining method of putting that filling and support synchronous mode prevention top board according to claim 1 is pressed extremely, it is characterized in that: the hydraulic prop quantity of reinforcing hydraulic support is greater than the quantity of the hydraulic prop of common hydraulic support, or the hydraulic prop diameter of reinforcing hydraulic support is greater than the diameter of the hydraulic prop of common hydraulic support.
3. the comprehensive coal-mining method of putting that filling and support synchronous mode prevention top board according to claim 1 is pressed extremely, it is characterized in that: described spoil piece maximum gauge is between 5-15cm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236373A (en) * | 2018-08-27 | 2019-01-18 | 清华大学 | A kind of pervasive coal mine underground reservoir and its method of construction |
| CN110439613A (en) * | 2019-07-18 | 2019-11-12 | 郑州四维机电装备制造有限公司 | A kind of coal working face tunnel filling spoil side dumping method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236373A (en) * | 2018-08-27 | 2019-01-18 | 清华大学 | A kind of pervasive coal mine underground reservoir and its method of construction |
| CN109236373B (en) * | 2018-08-27 | 2024-04-16 | 清华大学 | Universal coal mine underground reservoir and construction method thereof |
| CN110439613A (en) * | 2019-07-18 | 2019-11-12 | 郑州四维机电装备制造有限公司 | A kind of coal working face tunnel filling spoil side dumping method |
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