CN104675399B - Colliery digging fills integrated coal-mining method - Google Patents

Colliery digging fills integrated coal-mining method Download PDF

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Publication number
CN104675399B
CN104675399B CN201510046827.0A CN201510046827A CN104675399B CN 104675399 B CN104675399 B CN 104675399B CN 201510046827 A CN201510046827 A CN 201510046827A CN 104675399 B CN104675399 B CN 104675399B
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Prior art keywords
narrow strips
mining
filling
coal
goaf
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CN104675399A (en
Inventor
马宗玉
岳国君
岳国云
徐文久
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CHIFENG XILAMULUN (GROUP) GONGGE YINGZI COAL INDUSTRY Co Ltd
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CHIFENG XILAMULUN (GROUP) GONGGE YINGZI COAL INDUSTRY Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings

Abstract

The invention discloses a kind of colliery digging to fill integrated coal-mining method, comprises the following steps:1) exploiting field return air and filling pipeline lane, section boundary air way and exploiting field transport and air intake lane are opened in Mining Area;2) narrow strips coal mining is carried out in the Mining Area for forming ventilating system, each narrow strips, which are mined, to be terminated, and the narrow strips transport exploiting field and air intake lane penetrates with exploiting field return air and filling pipeline lane;3) the narrow strips goaf formed after the cementing packing material slurry pipeline transport in colliery to narrow strips is mined by pipeline is filled;4) narrow strips coal mining is carried out while to narrow strips goaf filling.Mechanization consolidated fill coal-mining method is filled in the colliery digging of the application; be advantageous to the abundant exploitation of underground coal resource, be advantageous to the protection of ecological environment and ground vegetation, solve amplification quantity dull coalreserves; extend mine useful life, there is significant economic benefit and social benefit.

Description

Colliery digging fills integrated coal-mining method
Technical field
The present invention relates to a kind of coal mining technology, and integrated coal-mining method is filled more particularly, to colliery digging.
Background technology
At home, general super high seam largely uses longwall top coal caving, but for the pit coal body overlying strong aquifer condition Under, original is designed as descending slicing control mining height and falls into method exploitation entirely, more than minable coal seam stays and has set substantial amounts of safety pillar under wa ter bodies.Together When, found in working from top down practice process, because top plate sedimentation causes top plate water drenching too big, not only operating environment is poor, water of also bursting Routed husky danger;Because hydrogeologic condition influences, leave again during separate zone production it is 2 meters thick protect top coals, cause exploiting field recovery ratio less than 40%, cause resource serious waste.And traditional entirely sunken coal-mining method exploitation, cause above rock and earth's surface gross distortion and sink Drop, causes formation damage, and producing the five big disaster such as larger geological disaster, water, fire, gas, coal dust, top plate also can be with exploitation journey Degree, scale increase and aggravate, have great threat to mine safety.
Designed by the full coal-mining method that falls into, Yin Liu sets substantial amounts of protection coal pillar, causes the ore deposit mineable coal quantity only to account for oil in place 39.2%, produce substantial amounts of dull coalreserves.
In order to solve the deficiency of above-mentioned traditional coal-mining method, applicant has developed colliery consolidated fill method, (China is specially 200910010429.8), to underground dead zone profit implements consolidated fill, so as to improve the rate of extraction, control ground settlement.
The application is on the basis of Chinese patent 200910010429.8, and the digging further researched and developed fills one The coal-mining method of body.
The content of the invention
Present invention aims at providing a kind of new colliery digging to fill integrated coal-mining method, this method can realize exploiting field Without coal pillar mining, mine and filling operation simultaneously, coordinative composition of equipments integration, larger raising production efficiency and the rate of extraction, raising are opened The upper limit is adopted, resource recovery, protection and improvement environment is improved, realizes the green exploitation in colliery and sustainable development.
The technical scheme is that:A kind of colliery digging fills integrated coal-mining method and comprised the following steps:
1) exploiting field return air and filling pipeline lane (also known as exploiting field air return way), section boundary wind are opened in Mining Area Lane and exploiting field transport and air intake lane (also known as exploiting field haulage gate);
2) narrow strips coal mining is carried out in the Mining Area for forming ventilating system, each narrow strips, which are mined, to be terminated, and this is narrow Band transports exploiting field and air intake lane penetrates with exploiting field return air and filling pipeline lane;
3) the narrow strips goaf formed after the cementing packing material slurry pipeline transport in colliery to narrow strips is mined by pipeline Filled;
4) narrow strips coal mining is carried out while to narrow strips goaf filling.
Jacking row supporting first is helped to the country rock in narrow strips goaf before to narrow strips goaf filling.
All coal columns of back production after the completion of described coal-mining method is mined in exploiting field, and to whole goafs of Mining Area Filled.Including section boundary air way, enter, all fillings of return airway Deng Suoyoukong lanes.This coal-mining method finally realizes nothing Coal column is adopted entirely to be filled entirely.
Before the goaf filling formed after being mined to narrow strips, the narrow strips goaf that is formed after first being mined to narrow strips The jacking row tunneling boring suspension roof support and/or shed shoring of country rock side.
When the shed shoring uses steel canopy, need to replace steel canopy with log hut before filling.
Used for filling method of the narrow strips goaf gradient more than 3 degree transported in narrow strips goaf and exploiting field it is simultaneous enter The intersecting sliding door mouth of air way sets removable stopping, and flow automatically using slurry during filling is filled in narrow strips goaf in three times It is full.
The placement method three times is:The half height of removable stopping one is filled to first, then waits filler solidification; Second of refilling arrives the height of removable stopping, again waits for the material solidification of second of filling;Then fill for the third time whole Individual narrow strips goaf.
Used for filling method of the narrow strips goaf gradient less than or equal to 3 degree narrow strips goaf is portable Barricade is segmented, the placement method filled of then being dropped back paragraph by paragraph to exploiting field return air and filling pipeline lane direction.
Every section of narrow strips goaf filling mode is filled to removable stopping height one for the first time using filling twice Half left and right, second of filling is carried out again until being full of this section after waiting filler solidification.
The time of the filler solidification is 10~16 hours.
The preparation of colliery consolidated fill slurry is arranged on the Filling Station in the earth's surface of colliery.
The coal-mining method is mined for layering.
The profile height of the narrow strips of the coal-mining method is 3-4 rice.
Beneficial effect:Just control mining height lingual golfs roof collapse coal-mining method, the longwell method of collecting coal by the means of filling, digging are filled below Integrated coal-mining method is filled out to be contrasted to illustrate the beneficial effect of the application method.
1) mining height lingual golfs roof collapse coal winning technology is controlled
Shortcoming:
A) working face security is poor.
Dead zone non-support, method controlroof is fallen into using complete, back production top plate has initial stage to press and periodic weighting, working face top Board management difficulty is larger;Easily accumulate pernicious gas and ponding, the goaf easily more hidden danger such as ignition in goaf.
B) caving zone and fissure zone are of a relatively high.Traditional caving method is mined, and due to goaf non-support, caving zone and is split Gap band is of a relatively high;Digging fills integrated coal-mining method because helping jacking row supporting to goaf, without caving zone, and because of top plate Sedimentation only has the 1.5% of mining height, and fissure zone highly substantially reduces.
C) subsidence rate is high, in the longwell caving method stope of arrangement in 2005, mining height 2m, and after back production 6 months, Subsidence maximum reaches 1.5m, and subsidence rate is up to 75%.It is that digging fills integrated coal-mining method coal mining subsidence rate 1.25% 60 times.
D under conditions of) having water drenching to mining geology complicated condition and working face, it is not easy to big machinery and melts adopt, yield It is low, work efficiency is low.
E) top plate water drenching, with the increase of layering, gradually enhancing, causes inflow rate of mine water significantly to rise, causes Groundwater Position is remarkably decreased.
F) working face equipment, material put into higher, mechanic and electrical material maintenance expense and small-sized high material consumption.G) working section recovery Less than 40%.
H) direct and integrated cost is higher.
2) longwall filling coal mining technique
Shortcoming:
A) filling process is more complicated, adopts that to fill the room for maneuver small, adopt fill influence each other it is big.
B) filling auxiliary material dosage is big, and the establishment fiber cloth of curtain is unable to utilization and recycle, beats post in an opposite direction and curtain wall wood Material consumption is big.
C) adopt to fill and influence each other, influence operating efficiency and single face output.
D) labor strength is big, and operating environment is poor, and security is poor, and productivity ratio is relatively low.
E) goaf non-support, the amount of crushing is big, 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 put into higher, mechanic and electrical material maintenance expense and small-sized high material consumption.H) working section recovery Less than 50%.
I) direct and integrated cost is higher.
3) digging fills integrated coal winning technology
Advantage:
A) working face security is higher.
Because working face uses full bolting technique, the amount of crushing minimum.Help due to adopting lane two to be coal body or obturation, it is right Top plate forms strong supporting, and ore deposit pressure shows small, and roof stability is good,
Initial stage is not present to press and periodic weighting, roof control difficulty are smaller in Ileal neobladder top plate;After goaf filling, mine The geological disasters such as flood, fiery trouble, gas, coal dust, top plate substantially weaken or eliminated.
B other filling methods, such a current highest of filling method pack completeness) are compared.Full Ratio can reach more than 98%.Eliminate Caving zone, fissure zone substantially reduce.
C) subsidence rate is very low.Surveyed after 21 meters of high seam slicing and filling back production, 0.262 meter of subsidence, subsidence rate 1.25% or so.If not stoping-and-filling, subsidence rate is more than 75%, and subsidence is up to 15.75 meters.
D) adopt and fill that technique is simple, and the room for maneuver is big, adopting to fill influences small, by fully-mechanized digging machine band back production filling method, adopts that fill can be real Now parallel operations to greatest extent, due to being that band gradient gravity flow filling, general 200m fill lane, filled in three times from high to low Fill out, pure loading time is surplus to have the longer slack time only with 3 bottom classes, waits intensity on slurry, therefore interval time is long, circles round Leeway is big.Once filling system breaks down, fully-mechanized digging machine can normally produce, adopt and be almost independent of each other between filling.
E it is less) to fill auxiliary material dosage, curtain establishment plastic cloth partially recycled can be multiplexed, the material of the placement method The 9% of material consumption, only wall type filling, saves substantial amounts of material consumption, reduces filling cost.
F) single face output, efficiency greatly improve, and promote the working face unit moon reach 1000m at present, monthly output reaches 1.6- 1.8 ten thousand tons, working face work efficiency is higher, per capita 21.6 tons of work efficiency, is more than 5 times of longwell filling 4 tons of work efficiency per capita.
G) due to filling timely support of the body to top plate, small to top plate disturbance plus machine instruction statement mining, top plate integrality is good, favorably In thick seam slicing system.
H) working section recovery is higher than 85%, can reach 95%.
I) direct and integrated cost is relatively low.
The colliery digging of the application fills integrated coal-mining method, is advantageous to the abundant exploitation of underground coal resource, favorably In the protection of ecological environment and ground vegetation, amplification quantity dull coalreserves are solved, extend mine useful life, there is significant economy to imitate Benefit and social benefit.
Brief description of the drawings
The floor map of Fig. 1 coal-mining methods of the present invention.
Goaf carries out the schematic diagram of tunneling boring suspension roof support in Fig. 2 present invention.
Goaf carries out the schematic diagram of shed shoring in Fig. 3 present invention.
The schematic diagram of filling method three times in Fig. 4 present invention.
The schematic diagram of Fig. 5 sublevel fill stoping methods.
Embodiment
A kind of colliery digging fills integrated coal-mining method and comprised the following steps:
1) exploiting field return air and filling pipeline lane 1, exploiting field transport and air intake lane 2 and section boundary air way 3 are opened in exploiting field; Three tunnels communicate, and in border air way road 3, relative one side also has collective conveyance belt road 4, collective conveyance belt road 4 and exploiting field Return air and filling pipeline lane 1, exploiting field transport and air intake lane 2 communicate, and the region that four tunnels surround is exactly to carry out coal mining activity Mining Area.Exploiting field return air and filling pipeline lane 1 and section boundary air way 3 are entered by the fresh air of collective conveyance belt road 4, it is weary Wind is transported from exploiting field and air intake lane 2 is sent to main return airway 5, and the exploiting field for carrying out coal mining activity forms the ventage normally produced System, as shown in Figure 1.
2) carry out narrow strips circulation in the Mining Area for forming ventilating system to mine, i.e., from exploiting field transport and air intake lane Band back production is proceeded by 2 right angle sliding door mouth to penetrate until with exploiting field return air and filling pipeline lane 1, this narrow strips are mined Terminate.After every narrow strips coal mining terminates, narrow strips and exploiting field return air and filling pipeline lane 1, the exploiting field transport and phase of air intake lane 2 It is logical, as shown in Figure 1.Fig. 1 also show the narrow strips 9 for carrying out coal mining activity, be ready for the narrow strips 10 of coal mining activity, The narrow strips goaf 6 that coal mining activity terminates.Mined during coal mining by digging all-in-one 22, and pass through exploiting field haulage gate Coal is transported out exploiting field by belt feeder 23.
3) goaf formed after the cementing packing material slurry pipeline transport in colliery to narrow strips is mined by filling pipeline 7 is entered Row cyclic pac king;The narrow strips goaf 11 filled and the narrow strips goaf for having filled completion are shown in Fig. 1 8.
4) at least next narrow strips are carried out while the goaf filling formed after mining to narrow strips to mine.Fig. 1 shows Coal mining activity, packing job parallel operations are shown, have not interfere with each other.
After exploiting field coal mining as shown in Figure 1 terminates, all remaining coal columns of back production, and whole goaf is included into exploiting field side Boundary's air way, enter, all fillings of return airway Deng Suoyoukong lanes, final realization is adopted entirely without coal column fills entirely.
Fig. 1 is shown can carry out coal mining activity while filling, and due to being that narrow strips are mined, working face can be with Carry out a plurality of narrow strips coal mining activity simultaneously.
When to narrow strips coal mining activity, the country rock in the narrow strips goaf formed after just being mined to narrow strips helps jacking row Supporting.Supporting can use tunneling boring suspension roof support and/or shed shoring.Tunneling boring suspension roof support supporting is as shown in Fig. 2 anchor pole The distance between 12 may be configured as 700-800mm.
Tunneling boring suspension roof support and shed shoring can use simultaneously, can also individually use.What shed shoring used When being 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, including backboard 13, back timber 14 and canopy leg 15.Canopy leg 15 with The angle on ground is 80 degree.
Each narrow strips goaf is filled according to the narrow strips goaf gradient using two methods.
After being mined for narrow strips the filling method of the goaf gradient that is formed more than 3 degree use in narrow strips goaf and The sliding door mouth 21 that exploiting field transport and air intake lane intersect sets removable stopping 16, and removable stopping 16 keeps off sliding door mouth (port) Sternly.Narrow strips goaf is filled in three times using slurry gravity flow during filling and is full of.
The placement method three times is:The half height of removable stopping 16 1 is filled to first, then waits filler to consolidate Change;Second of refilling arrives the height of removable stopping, again waits for the material solidification of second of filling;Then third time fills Whole goaf.As shown in Figure 4.Filled three times with filling pipeline 7 in goaf.The time of filler solidification for 10~ 16 hours.
Use what is formed after narrow strips are mined to adopt for filling method of the narrow strips goaf gradient less than or equal to 3 degree Dead zone removable stopping 16 is segmented, the placement method filled of then being dropped back paragraph by paragraph to return aircourse direction.
Every section of narrow strips goaf filling mode is charged to the height of removable stopping 16 one for the first time using filling twice Half left and right, second of filling is carried out again until being full of this section after waiting filler solidification.As shown in Figure 5.
The time of the filler solidification is 10~16 hours.
The preparation of colliery consolidated fill slurry is arranged on the Filling Station in the earth's surface of colliery.
Coal-mining method is mined for layering.As shown in figure 4, filled in the goaf to be formed of being mined to first layer coal seam Afterwards, then successively 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, until Coal seam is layered complete extraction.Certainly it is required for carrying out the exploitation of upper strata layering after per separate zone production again after being filled.
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 section of narrow strips It highly it is 3.5 meters, width is 4.5 meters.Coal seam geological condition is can also be suitably to adjust.

Claims (4)

1. a kind of colliery digging fills integrated coal-mining method, the coal-mining method is mined for layering, is all needed after every separate zone production The exploitation of upper strata layering is carried out after being filled again, is comprised the following steps per separate zone production:
1) exploiting field return air and filling pipeline lane, section boundary air way and exploiting field transport and air intake are opened in Mining Area Lane;
2) narrow strips coal mining is carried out in the Mining Area for forming ventilating system, when to narrow strips coal mining activity, to fillet Country rock with the narrow strips goaf formed after mining helps jacking row supporting, and each narrow strips, which are mined, to be terminated, and the narrow strips will adopt Area's transport and air intake lane and exploiting field return air and filling pipeline lane penetrate, and the profile heights of narrow strips is 3-4 rice, width 4-5 rice;
3) the narrow strips goaf formed after the cementing packing material slurry pipeline transport in colliery to narrow strips is mined by pipeline is carried out Filling,
Used for filling method of the narrow strips goaf gradient more than 3 degree in narrow strips goaf and exploiting field transport and air intake The intersecting sliding door mouth in lane sets removable stopping, fills narrow strips goaf in three times using slurry gravity flow during filling and is full of, The placement method three times is:The half height of removable stopping one is filled to first, then waits filler solidification;For the second time again The height of removable stopping is filled to, again waits for the material solidification of second of filling;Then whole narrow strips are filled for the third time Goaf;
Used for filling method of the narrow strips goaf gradient less than or equal to 3 degree by narrow strips goaf removable stopping Segmentation, the placement method filled of then being dropped back paragraph by paragraph to exploiting field return air and filling pipeline lane direction;Every section of narrow strips goaf is filled Embankment formula is filled to removable stopping mid-height or so for the first time using filling twice, enters again after waiting filler solidification Second of filling of row is until be full of this section;
4) narrow strips coal mining is carried out while to narrow strips goaf filling;
5) coal-mining method described in is mined all coal columns of back production after the completion of filling in exploiting field, and whole goaf is included into exploiting field side Boundary's air way, enter, all fillings of return airway Suo Youkong lanes, most goaf all fills at last.
2. colliery digging according to claim 1 fills integrated coal-mining method, it is characterised in that method for protecting support is complete disconnected Face suspension roof support and/or shed shoring.
3. colliery digging according to claim 1 fills integrated coal-mining method, it is characterised in that the filler is consolidated The time of change is 10~16 hours.
4. colliery digging according to claim 1 fills integrated coal-mining method, it is characterised in that colliery cemented filling material The preparation of slurry is arranged on the Filling Station in the earth's surface of colliery.
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CN105041319A (en) * 2015-08-25 2015-11-11 袁伟昊 Mine colliery lane manless working face and filling mining method
CN110145308B (en) * 2019-06-21 2021-03-30 山东威斯特矿山工程科技股份有限公司 Three-down coal mining method for layered stepping mining and filling of concentrated filling roadway of near-horizontal extra-thick coal seam
CN111396051B (en) * 2020-01-16 2021-04-13 中国矿业大学 Unmanned intelligent continuous mining continuous filling water-retaining coal mining method
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

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