CN104675399A - Coal mining and filling integrated method for coal mine - Google Patents
Coal mining and filling integrated method for coal mine Download PDFInfo
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- CN104675399A CN104675399A CN201510046827.0A CN201510046827A CN104675399A CN 104675399 A CN104675399 A CN 104675399A CN 201510046827 A CN201510046827 A CN 201510046827A CN 104675399 A CN104675399 A CN 104675399A
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- 238000005065 mining Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 67
- 239000003245 coal Substances 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 230000010354 integration Effects 0.000 claims description 22
- 230000032258 transport Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 230000005641 tunneling Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000003801 milling Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000011084 recovery Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- -1 fire Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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Abstract
The invention discloses a coal mining and filling integrated method for a coal mine. The method comprises the following steps: (1) digging out an air returning and filling pipeline lane, a boundary air lane and a transportation and air intaking lane of a mining region on a working surface of the mining region; (2) mining coal with a narrow strip channel in the working surface of the mining region, in which a ventilating system is formed, after coal mining in each narrow strip channel is finished, communicating the transportation and air intaking lane of the mining region with the air returning and filling pipeline lane of the mining region through narrow strip channels; (3) transporting coal mine cementing filling material slurry into a narrow strip channel excavating region formed after the coal mining in the narrow strip channels is finished for filling; and (4) mining the coal in the narrow strip channels while filling the narrow strip channel excavating region. The mechanical cementing, filling and milling method for the coal mining, disclosed by the invention, is beneficial to sufficiently developing underground coal resources, protecting the ecological environment and ground vegetation, releasing a large number of dull coal and prolonging the service life of a mine, and has remarkable economic benefits and social benefits.
Description
Technical field
The present invention relates to a kind of coal mining technology, especially relate to colliery digging filling integration coal-mining method.
Background technology
At home, general super high seam major part adopts longwall top coal caving, but under this pit coal body covers strong aquifer condition, and the former descending slicing that is designed to controls mining height and entirely falls into method exploitation, more than minable coal seam stays and has established a large amount of safety pillar under wa ter bodies., find at working from top down practice process, because top board sedimentation causes top board trickle too large, not only operating environment is poor meanwhile, also has water of bursting to burst the danger of sand; Because of hydrogeological conditions impact, leave again 2 meters during separate zone production and thickly protect top coal, cause exploiting field recovery ratio less than 40%, cause resource serious waste.And traditional complete sunken coal-mining method exploitation, cause above rock and earth's surface gross distortion and sedimentation, cause formation damage, produce matter disaster significantly, the large disaster of water, fire, gas, coal dust, top board etc. five also can be aggravated with the increase of recovery percent, scale, has great threat to mine safety.
Fall into coal-mining method design by complete, Yin Liu establishes a large amount of protection coal pillar, causes this ore deposit mineable coal quantity only to account for 39.2% of oil in place, produces a large amount of dull coalreserves.
In order to solve the deficiency of above-mentioned traditional coal-mining method, applicant has developed colliery consolidated fill method (Chinese patent 200910010429.8), consolidated fill is implemented to dead zone, down-hole, thus improve the rate of extraction, control ground settlement.
The application is on the basis of Chinese patent 200910010429.8, the coal-mining method of the digging filling integration of researching and developing further.
Summary of the invention
The object of the invention is to provide a kind of new colliery digging filling integration coal-mining method; the method can realize exploiting field without coal pillar mining; mine and filling operation simultaneously; coordinative composition of equipments integration; enhance productivity more greatly and the rate of extraction, improve mining up per limit, improve resource recovery; protection and environmental protect, realize colliery environmental protection exploitation and sustainable development.
Technical scheme of the present invention is: a kind of colliery digging filling integration coal-mining method comprises the steps:
1) Mining Area open Bian district return air hold concurrently filling pipeline lane (also known as Bian district air return way), Bian district border air way and Bian district transport hold concurrently air intake lane (also known as Bian district haulage gate);
2) in the Mining Area forming ventilation system, carry out narrow strips coal mining, each narrow strips is mined and is terminated, and this narrow strips air intake Xiang Yu Bian district return air filling pipeline lane of holding concurrently of the transport of Bian district being held concurrently is through;
3) after being mined to narrow strips by cementing for colliery packing material slurry pipeline transport by pipeline, filling is carried out in the narrow strips goaf of formation;
4) while to narrow strips goaf filling, narrow strips coal mining is carried out.
Before to narrow strips goaf filling, first the supporting of jacking row is helped to the country rock in narrow strips goaf.
The all coal columns of described coal-mining method back production after having mined in exploiting field, and filling is carried out to whole goafs of Mining Area.Comprise section boundary air way, enter, return airway Deng Suoyoukong lane whole fill.This coal-mining method finally realizes entirely adopting without coal column entirely filling.
Before the goaf filling formed after narrow strips is mined, the country rock side jacking row tunneling boring bolt support in the narrow strips goaf formed after first narrow strips being mined and/or shed shoring.
When described shed shoring uses steel canopy, need before filling to replace steel canopy with log hut.
The filling method employing narrow strips goaf gradient being greater than to 3 degree arranges removable stopping in narrow strips goaf with the sliding door mouth that Bian district transports air intake lane of holding concurrently crossing, utilizes slip to flow automatically and divide three fillings to be full of in narrow strips goaf during filling.
Described three placement methods are: be first filled to removable stopping half height, then wait for filler solidification; Second time refills the height of removable stopping, again waits for the material cured of second time filling; Then third time the whole narrow strips goaf of filling.
The filling method narrow strips goaf gradient being less than or equal to 3 degree adopts the removable stopping segmentation of narrow strips goaf, the placement method of direction, filling pipeline lane recession filling of then holding concurrently to Bian district return air piecemeal.
Described every section of narrow strips goaf filling mode adopts twice filling, and first time carries out second time filling until be full of this section after waiting for filler solidification about being filled to removable stopping mid-height again.
The time of described filler solidification is 10 ~ 16 hours.
The preparation of colliery binding backfill slurry is arranged on the Filling Station on earth's surface, colliery.
Described coal-mining method is that layering is mined.
The profile height of the narrow strips of described coal-mining method is 3-4 rice.
Beneficial effect: carry out contrasting the beneficial effect that the application's method is described with regard to control mining height lingual golfs roof collapse coal-mining method, the longwell method of collecting coal by the means of filling, digging filling integration coal-mining method below.
1) mining height lingual golfs roof collapse coal winning technology is controlled
Shortcoming:
A) work plane safety is poor.
Dead zone non-support, utilizes and complete falls into method controlroof, and back production top board exists the initial stage and presses and periodic weighting, and face roof management difficulty is larger; Pernicious gas and ponding are easily accumulated in goaf, and the more hidden danger such as easily to be got angry in goaf.
B) caving zone and fissure zone are relatively high.Traditional caving method is mined, and due to goaf non-support, caving zone and fissure zone are relatively high; Digging filling integration coal-mining method is because helping the supporting of jacking row to goaf, and without caving zone, and only have 1.5% of mining height because of top board sedimentation, fissure zone height reduces greatly.
C) subsidence rate is high, and at the longwell caving method stope that 2005 arrange, mining height 2m, back production is after 6 months, and subsidence maximum value reaches 1.5m, and subsidence rate reaches 75%.It is 60 times of digging filling integration coal-mining method coal mining subsidence rate 1.25%.
D) to mining geology complicated condition and under work plane has the condition of trickle, be not easy to big machinery and melt and adopt, yield poorly, work efficiency is low.
E) top board trickle, with the increase of layering, strengthens gradually, causes inflow rate of mine water significantly to rise, and causes groundwater level significantly to decline.
F) working face equipment, material drop into higher, mechanic and electrical material maintenance expense and small-sized high material consumption.G) working section recovery is lower than 40%.
H) directly and integrated cost higher.
2) longwall filling coal mining technique
Shortcoming:
A) filling process is more complicated, adopts that to fill the room for maneuver little, adopt fill influence each other large.
B) filling auxiliary material consumption is large, and the establishment cloth of curtain can not utilization and recycle, beat clash post and the consumption of curtain wall timber large.
C) adopt to fill and influence each other, affect operating efficiency and single face output.
D) labor strength is large, and operating environment is poor, poor stability, and productivity ratio is lower.
E) goaf non-support, the amount of crushing is large, the easy inbreak in goaf.
F) filling Full Ratio is low, and filling effect is poor, is unfavorable for separate zone production,
G) working face equipment, material drop into higher, mechanic and electrical material maintenance expense and small-sized high material consumption.H) working section recovery is lower than 50%.
I) directly and integrated cost higher.
3) digging filling integration coal winning technology
Advantage:
A) work plane safety is higher.
Because work plane adopts full bolting technique, the amount of crushing is minimum.Help to be coal body or obturation owing to adopting lane two, form strong supporting to top board, ore deposit pressure manifests little, and roof stability is good,
There is not the initial stage and press and periodic weighting in Ileal neobladder top board, roof control difficulty is less; After goaf filling, the geological disasters such as mine flood, fire trouble, gas, coal dust, top board obviously weaken or eliminate.
B) compare other filling methods, this kind of filling method pack completeness is the highest at present.Full Ratio can reach more than 98%.Eliminated caving zone, fissure zone reduces greatly.
C) subsidence rate is very low.Survey after the back production of 21 meters of high seam slicing and fillings, subsidence 0.262 meter, subsidence rate is about 1.25%.If not stoping-and-filling, subsidence rate is more than 75%, and subsidence will reach 15.75 meters.
D) adopt that to fill technique simple, the room for maneuver is large, adopts that to fill impact little, by fully-mechanized digging machine band back production filling method, adopt to fill and can realize parallel operations to greatest extent, owing to being be with gradient gravity flow filling from high to low, general 200m filling lane, divides three fillings, pure loading time only uses 3 bottom classes, surplus have the longer slack time, wait for intensity on slurry, therefore interval time is long, the room for maneuver is large.Once filling system breaks down, fully-mechanized digging machine can normally be produced, and adopts between filling and is almost independent of each other.
E) filling auxiliary material consumption is less, and curtain establishment Polypropylence Sheet can be partially recycled multiplexing, and the material consumption of this placement method, is only 9% of wall type filling, saves a large amount of material consumptions, reduces filling cost.
F) single face output, efficiency significantly improve, and advance the current work plane unit moon and reach 1000m, monthly output reaches 1.6-1.8 ten thousand tons, and work plane work efficiency is higher, per capita work efficiency 21.6 tons, are more than 5 times of longwell filling work efficiency 4 tons per capita.
G) owing to filling the timely support of body to top board, add that machine instruction statement mining is little to top board disturbance, top board integrality is good, is conducive to thick seam slicing system.
H) working section recovery is higher than 85%, can reach 95%.
I) directly and integrated cost lower.
The colliery digging filling integration coal-mining method of the application, is conducive to the abundant exploitation of underground coal resource, is conducive to the protection of ecological environment and ground vegetation, separate amplification quantity dull coalreserves, extend mine useful life, have significant economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1. the floor map of coal-mining method of the present invention.
Fig. 2. in the present invention, the schematic diagram of tunneling boring bolt support is carried out in goaf.
Fig. 3. in the present invention, the schematic diagram of shed shoring is carried out in goaf.
Fig. 4. the schematic diagram of three filling methods in the present invention.
Fig. 5. the schematic diagram of sublevel fill stoping method.
Detailed description of the invention
A kind of colliery digging filling integration coal-mining method comprises the steps:
1) open hold concurrently filling pipeline lane 1, the transport of Bian district of Bian district return air to hold concurrently air intake lane 2 and Bian district border air way 3 in exploiting field; Three tunnels communicate, collective conveyance belt road 4 is also had in the one side that air way road, border 3 is relative, hold concurrently filling pipeline lane 1, Bian district of collective conveyance belt road 4 and Bian district return air transports air intake lane 2 of holding concurrently and communicates, and the region that four tunnels surround is exactly the Mining Area carrying out coal mining activity.Enter Bian district return air by the new wind in collective conveyance belt road 4 to hold concurrently filling pipeline lane 1 and Bian district border air way 3, main return airway 5 is delivered in transport air intake lane 2 of holding concurrently in weary Feng Cong Bian district, and the exploiting field of carrying out coal mining activity defines normal ventilation system of producing, as shown in Figure 1.
2) in the Mining Area forming ventilation system, carry out narrow strips circulation to mine, transport the hold concurrently sliding door mouth place, right angle in air intake lane 2 in Ji Cong Bian district starts to carry out band back production until through with Bian district return air filling pipeline lane 1 of holding concurrently, and this narrow strips is mined and terminated.After every bar narrow strips is mined and terminated, hold concurrently filling pipeline lane 1, Bian district of narrow strips and Bian district return air transports double air intake lane 2 and communicates, as shown in Figure 1.Fig. 1 also show the narrow strips 9 of carrying out coal mining activity, prepares the narrow strips 10 of carrying out coal mining activity, the narrow strips goaf 6 that coal mining activity terminates.Mined by digging all-in-one 22 during coal mining, and by Bian district haulage gate conveyor 23, coal is transported out Bian district.
3) after being mined to narrow strips by cementing for colliery packing material slurry pipeline transport by filling pipeline 7, cyclic pac king is carried out in the goaf of formation; The narrow strips goaf 11 of carrying out filling and the narrow strips goaf 8. that completes of filling is shown in Fig. 1
4) carry out at least next narrow strips while the goaf filling formed after mining to narrow strips to mine.Fig. 1 shows coal mining activity, packing job parallel operations, does not interfere with each other.
After mining and terminate in exploiting field as shown in Figure 1, all remaining coal columns of back production, and whole goaf comprised section boundary air way, enter, return airway Deng Suoyoukong lane whole fill, finally realize entirely adopting without coal column entirely filling.
Fig. 1 shows and can carry out coal mining activity while filling, and owing to being that narrow strips is mined, a work plane can carry out many narrow strips coal mining activities simultaneously.
When to narrow strips coal mining activity, the country rock side jacking row supporting in the narrow strips goaf formed after just narrow strips being mined.Supporting can adopt tunneling boring bolt support and/or shed shoring.As shown in Figure 2, the distance between anchor pole 12 can be set to 700-800mm in tunneling boring bolt support supporting.
Tunneling boring bolt support and shed shoring can use simultaneously, also can individually use.When shed shoring uses steel canopy, need to replace steel canopy with log hut before filling.
The structure of shed shoring is prior art, as shown in Figure 3, comprises backboard 13, back timber 14 and canopy leg 15.Canopy leg 15 is 80 degree with the angle on ground.
Each narrow strips goaf adopts two kinds of methods to carry out filling according to the narrow strips goaf gradient.
The filling method employing goaf gradient formed after narrow strips coal mining being greater than to 3 degree arranges removable stopping 16 in narrow strips goaf with the sliding door mouth 21 that Bian district transports air intake lane of holding concurrently crossing, and removable stopping 16 will by tight for mouth (port) gear of pulling.Utilizing slip to flow automatically during filling divides three fillings to be full of in narrow strips goaf.
Described three placement methods are: be first filled to removable stopping 16 half height, then wait for filler solidification; Second time refills the height of removable stopping, again waits for the material cured of second time filling; Then third time the whole goaf of filling.As shown in Figure 4.Three fillings are carried out at goaf filling pipeline 7.The time of filler solidification is 10 ~ 16 hours.
The filling method narrow strips goaf gradient being less than or equal to 3 degree adopts goaf removable stopping 16 segmentation will formed after narrow strips coal mining, then piecemeal to the placement method of direction, return aircourse recession filling.
Described every section of narrow strips goaf filling mode adopts twice filling, about being charged to removable stopping 16 mid-height for the first time, carries out second time filling again until be full of this section after waiting for filler solidification.As shown in Figure 5.
The time of described filler solidification is 10 ~ 16 hours.
The preparation of colliery binding backfill slurry is arranged on the Filling Station on earth's surface, colliery.
Coal-mining method is that layering is mined.As shown in Figure 4, after filling is carried out in the goaf that formed of mining to first floor coal seam, then the exploitation in second layer coal seam 17, third layer coal seam 18, the 4th layer of coal seam 19 and layer 5 coal seam 20 is carried out successively, until by coal seam layering complete extraction.Certainly the exploitation of upper strata layering is carried out after all needing to carry out filling after every separate zone production again.
The profile height of the narrow strips of this coal-mining method back production coal is 3-4 rice, width 4-5 rice.The conventional profile height of narrow strips is 3.5 meters, and width is 4.5 meters.Also coal seam geological condition suitably adjusts.
Claims (10)
1. a colliery digging filling integration coal-mining method comprises the steps:
1) Mining Area open Bian district return air hold concurrently filling pipeline lane, Bian district border air way and Bian district transport hold concurrently air intake lane;
2) in the Mining Area forming ventilation system, carry out narrow strips coal mining, each narrow strips is mined and is terminated, and this narrow strips air intake Xiang Yu Bian district return air filling pipeline lane of holding concurrently of the transport of Bian district being held concurrently is through;
3) after being mined to narrow strips by cementing for colliery packing material slurry pipeline transport by pipeline, filling is carried out in the narrow strips goaf of formation;
4) while to narrow strips goaf filling, narrow strips coal mining is carried out.
2. colliery according to claim 1 digging filling integration coal-mining method, is characterized in that, before to narrow strips goaf filling, first help the supporting of jacking row to the country rock in narrow strips goaf.
3. colliery according to claim 2 digging filling integration coal-mining method, it is characterized in that, described supporting method is tunneling boring bolt support and/or shed shoring.
4. colliery according to claim 1 digging filling integration coal-mining method, it is characterized in that, the filling method employing narrow strips goaf gradient being greater than to 3 degree arranges removable stopping in narrow strips goaf with the sliding door mouth that Bian district transports air intake lane of holding concurrently crossing, utilizes slip to flow automatically and divide three fillings to be full of in narrow strips goaf during filling.
5. colliery according to claim 4 digging filling integration coal-mining method, it is characterized in that, described three placement methods are: be first filled to removable stopping half height, then wait for filler solidification; Second time refills the height of removable stopping, again waits for the material cured of second time filling; Then third time the whole narrow strips goaf of filling.
6. colliery according to claim 1 digging filling integration coal-mining method, it is characterized in that, the filling method narrow strips goaf gradient being less than or equal to 3 degree adopts the removable stopping segmentation of narrow strips goaf, the placement method of direction, filling pipeline lane recession filling of then holding concurrently to Bian district return air piecemeal.
7. colliery according to claim 6 digging filling integration coal-mining method, it is characterized in that, described every section of narrow strips goaf filling mode adopts twice filling, first time carries out second time filling until be full of this section after waiting for filler solidification about being filled to removable stopping mid-height again.
8. the colliery digging filling integration coal-mining method according to claim 5 or 7, it is characterized in that, the time of described filler solidification is 10 ~ 16 hours.
9. colliery according to claim 1 digging filling integration coal-mining method, it is characterized in that, the preparation of colliery binding backfill slurry is arranged on the Filling Station on earth's surface, colliery.
10. colliery according to claim 1 digging filling integration coal-mining method, it is characterized in that, described coal-mining method is all coal columns of back production after exploiting field coal mining filling completes, and goaf whole fill the most at last.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041319A (en) * | 2015-08-25 | 2015-11-11 | 袁伟昊 | Mine colliery lane manless working face and filling mining method |
| CN110145308A (en) * | 2019-06-21 | 2019-08-20 | 山东威斯特矿山工程科技股份有限公司 | Nearly horizontal super high seam concentrates the layering of filling lane to take a step to adopt the three unders in coal mining method filled |
| CN111364999A (en) * | 2020-03-30 | 2020-07-03 | 中煤能源研究院有限责任公司 | Replacement method for open pit coal mine end slope coal pressing mining and filling integration |
| CN111396051A (en) * | 2020-01-16 | 2020-07-10 | 中国矿业大学 | Unmanned intelligent continuous mining continuous filling water-retaining coal mining method |
| CN114320298A (en) * | 2022-01-05 | 2022-04-12 | 国家能源集团国源电力有限公司 | Coal mining method |
| CN115263412A (en) * | 2022-07-22 | 2022-11-01 | 中国矿业大学 | Method for filling caving coal goaf |
| CN115288781A (en) * | 2022-07-28 | 2022-11-04 | 中煤科工开采研究院有限公司 | Filling technology based on filling mining and filling mining method |
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