CN105317459B - A kind of subregion placement method for being used to control tight roof large area caving disaster - Google Patents
A kind of subregion placement method for being used to control tight roof large area caving disaster Download PDFInfo
- Publication number
- CN105317459B CN105317459B CN201510802272.8A CN201510802272A CN105317459B CN 105317459 B CN105317459 B CN 105317459B CN 201510802272 A CN201510802272 A CN 201510802272A CN 105317459 B CN105317459 B CN 105317459B
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- Prior art keywords
- packwall
- support
- main support
- filling
- goaf
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007569 slipcasting Methods 0.000 claims abstract description 13
- 230000032798 delamination Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- 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
- E21F15/08—Filling-up hydraulically or pneumatically
-
- 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
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Revetment (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention discloses a kind of subregion placement method for being used to control tight roof large area caving disaster, and a kind of described subregion placement method for being used to control tight roof large area caving disaster divides into main support packwall, auxiliary filling area and roof delamination filling area by mined out.Main support packwall is main to be made up of discarded spoil, concrete, short anchor cable and support unit, becomes the main support packwall with relatively strong support with sealing ability；Filling area is aided in the closing space mainly between two main support packwalls, filled using high-water material or other materials, during sinking under the top plate, main support packwall is acted on obturation Constrained with both sides rib so that obturation has stronger enabling capabilities in auxiliary filling area；Roof delamination filling area refers to that occurring absciss layer region in auxiliary filling area scope top plate carries out high-pressure slip-casting filling, prevents the absciss layer of more upper rock stratum, and then realize effective control to subsidence.
Description
Technical field
The present invention relates to a kind of coal mine gob processing method, it is adaptable to controls point of tight roof large area caving disaster
Area's placement method
Background technology
Coal mine gob tight roof process problem is to perplex the important problem of the safe and efficient production of mine working face.When opening
When mining coal seam top plate is complete hard rock stratum, as working face is pushed ahead, above goaf tight roof large area is hanging
Without occurring to be caving accordingly, so that cause above goaf top plate outstanding product of showing up in working face rear gradually to increase, it is now hard
Top plate has gathered great number of elastic energy, when occurrence of large-area is caving, and will produce strong bump.In addition, in goaf
Large quantity of air is compressed suddenly, hurricane is produced in tunnel, all winning apparatus and operating personnel are damaged in impact, or even have influence on
Complete other regions of mine and mine main fan.
At present, the method for the controlroof generally taken, predominantly artificial overhead caving, Roof injection are soft
Change, hydrofracturing, depth hole tilt explosion etc..These methods achieve certain effect in applying at the scene, but all there is heavily fortified point
The problems such as hard top plate drilling constructional difficulties, serious restriction drawing speed, fail to fundamentally solve tight roof control problem.
The present invention has changed existing river harnessing ideas, and the impact disaster that tight roof large area caving is brought is solved using placement method, and
Propose new subregion placement method realize full mine give up cash utilize, back production with fill cooperate with carry out and subsidence effective control
System.
The content of the invention
The purpose of the present invention is exactly that there is provided one kind in order to solve the problems of above-mentioned current tight roof control technology
Technically ripe simple, control top cost is low, the good method of the effectiveness of roof control.This method can effectively solve above-mentioned current control top technology
The problems of, such as higher in the presence of control top cost, complicated construction technique, tight roof is difficult to fundamentally accordingly be had
A series of outstanding problems such as effect control.
To realize the above-mentioned purpose of the present invention, the present invention provides a kind of control goaf tight roof that is applied to and sunk suddenly
The method being caving.After working face pushes ahead certain distance from open-off cut, corresponding note is laid in support afterbody goaf
Starch pipeline.At the same time uniformly 1~3 deep drill is made a call to goaf top plate at whole working face rear.Drilling depth is beaten
Occur to top plate main key stratum lower roof plate at absciss layer, at the same time corresponding and a piece non-porous grouting pipeline of laying, wherein slip casting
Pipe is sealed with importing drill hole with annular rubber ring.Grouting pipeline uses flexible pipe, and is equipped with corresponding steel in pipeline
Muscle frame protection structure, it is to avoid corresponding grouting pipeline is smashed in goaf spoil inbreak.When working face accordingly promotes certain distance
Afterwards, it is trapezoidal support fire dam to have been built behind force piece with discarded spoil with one fixed width and height cross section,
Wherein trapezoidal top width is 5~10m, is highly corresponding mining height, and its specific size can discard spoil according to mine
Amount is adjusted accordingly；In support fire dam surface laying wire netting, it is noted accordingly using concrete grouting pipeline
Slurry is reinforced；Before concrete slurry does not solidify also, support fire dam is spaced from top to bottom and uniformly loads onto reinforcement rigging, with this
Apply corresponding prestressing force simultaneously, increase the bulk strength of support fire dam with this so that it turns into the main support packwall in goaf.
It is auxiliary by being laid on goaf using high-water material after being finished to support packwall slip casting and reaching its corresponding some strength
The grouting pipe of filling area centre is helped to carry out lag grouting to the goaf auxiliary filling area behind main support packwall；With work
Make pushing ahead for face, at the same time continue to add to carrying out corresponding slip casting in main support packwall and goaf auxiliary filling area
Gu, continue to push ahead when with working face, corresponding absciss layer will occur for its working face rear goaf top plate, now use
High-water material carries out corresponding grouting and reinforcing by the grouting pipe being laid in goaf top plate to roof delamination area, is come with this
Reduce as the surface subsidence phenomenon caused by the exploitation of underground coal.
Beneficial effect
The present invention realizes underground bastard coal and is directly separated and transports, and is directly transported after the spoil that underground is separated is broken
Filled to goaf, reduce surface subsidence, alleviate the pressure of transport lifting.Reduce the occupation of land face of hillock simultaneously
Product and environmental pollution, surface subsidence can be controlled well, it is adaptable to require higher place to surface subsidence control；In addition its
Selected filler is simply easily obtained, and filler cost is low, efficiently solves filling operation area water and mud mistake
Many the problems such as.Filling velocity is fast, and placement method is simple, realizes working face extraction and bashing and carries out simultaneously, reliability
By force, small investment, cost are low, have wide applicability in tight roof control technology field.
Brief description of the drawings
Fig. 1 is the structural representation for the filling control method that the present invention solves tight roof large area caving disaster.
Fig. 2 is A-A sectional views in Fig. 1.
Fig. 3 is B- sectional views in Fig. 1.
Fig. 4 is line C-C sectional view in Fig. 1.
Fig. 5 is the partial enlarged drawing in Fig. 1, Fig. 2 and Fig. 3.
Description of reference numerals：The main support packwall in 1- goafs；2- concrete filling pipelines；High-water material in 3- goafs
Slip casting area；Grouting pipe in 4- goafs；4a- steel bar frameworks；4b- injected holes；5- roof delaminations area；The area's slip casting of 6- roof delaminations
Pipeline；6a- ring-shaped rubber sealing-plugs；7- entity coals；8- working faces；9- fills pumping plant；10a- steel strand wires；10b- pallets；10c-
Reinforcing bar ladder beam；11- wire nettings.
Embodiment
A kind of subregion placement method for being used to control tight roof large area caving disaster as shown in Figure 1, including：It is mined out
The main support packwall 1 in area；Concrete grouting pipeline 2；High-water material slip casting area 3 in goaf；Grouting pipe 4 in goaf；Steel
Muscle framework 4a；Injected hole 4b；Roof delamination area 5；Roof delamination area grouting pipe 6；Ring-shaped rubber sealing-plug 6a；Entity coal 7；Work
Make face 8；Fill pumping plant 9；Strengthen rigging；Steel strand wires 10a；Pallet 10b；Reinforcing bar ladder beam 10c；Wire netting 11.
A kind of subregion placement method for being used to control tight roof large area caving disaster of the application, its method for protecting support
For：After working face 8 pushes ahead certain distance from open-off cut, corresponding grouting pipe 4 is laid in support afterbody goaf,
At the same time 1~3 deep drill uniformly is made a call to top plate at whole working face rear, drilling depth gets to top plate and occurs absciss layer
At main key stratum, and a non-porous grouting pipe 6 is laid, grouting pipe 6 is installed to drilling hole bottom；To reach optimal note
Starch controlroof sinking effect；In addition drilling using ring-shaped rubber sealing-plug 6a sealings at the aperture of injected hole with that will work as work
Face accordingly push ahead to one auxiliary filling section length, behind force piece with gangue has built with one fixed width with
Height and its cross section be the trapezoidal main support packwall 1 in goaf, wherein trapezoidal top width be 5~10m, highly to be corresponding
Mining height, its specific size can according to mine discard spoil amount adjust accordingly；In the laying of the main surface of support packwall 1
Wire netting 11, corresponding grouting and reinforcing is carried out using concrete grouting pipeline 2 to it；Before concrete slurry does not solidify also,
Main support packwall 1 is spaced from top to bottom and uniformly loads onto reinforcement rigging, by lockset by steel strand wires 10a, pallet 10b and reinforcing bar
Ladder beam 10c, which closely connects, to be integral, and at the same time applies corresponding prestressing force, and the overall strong of main support packwall 1 is increased with this
Degree.Its pipeline laid is protected using steel bar framework 4a accordingly to grouting pipeline, by pipeline protect wherein with
Anti- Grouting Pipe is damaged by pressure simultaneously by goaf spoil and is not influenceed its corresponding slip casting effect；Finished when to 1 slip casting of main support filling,
And after reaching corresponding some strength, 4 pairs of grouting pipe being laid at working face rear-center is passed through using high-water material
Goaf behind main support packwall 1 carries out lag grouting；After being finished to the main rear goaf grouting of support packwall 1,
With working face 8 continue push ahead, absciss layer will occur for the top plate in its rear goaf of working face 8, now using height
Water material carries out corresponding grouting and reinforcing by the grouting pipe 6 being laid in roof delamination area 5 to roof delamination area 5, with this
To reduce the surface subsidence phenomenon caused by the exploitation of underground coal.The auxiliary filling section length depends primarily on top plate
Periodic weighting step pitch L, support width of wall body d, wall are from constructing to the time t and face propulsion speed for playing supporting role
V, its length should be less than L-vt-d, it is ensured that during main support wall construction, working face can be exploited normally, and top plate will not occur
It is disrumpent feelings；At the advance of the face to disrumpent feelings position, main support packwall can form effective support, it is to avoid occurrence of large-area is caving
Disaster.
Claims (3)
1. a kind of subregion placement method for being used to control tight roof large area caving disaster, it is characterised in that：Described is used for
The subregion placement method of tight roof large area caving disaster is controlled, subregion point is carried out using the working space under tight roof
Class filling and support, can carry out filling and support operation, methods described includes while back production：When the advance of the face to one it is auxiliary
Help after filling section length, be transported to the discarded spoil at this with full mine after force piece immediately and be piled into a trapezoidal support
Wall, the pre-buried steel strand wires during piling up, and concrete grouting is carried out to discarded spoil support wall, afterwards in support wall
Waste metal net is laid on inclined-plane, and by the steel supporting plate of pre-buried steel strand wires recovery, reinforcing bar ladder beam to concrete grouting
Pack wall afterwards carries out prestress application so that it integrally has advantages of higher compressive strength, as the main support packwall in goaf；
In the work progress of main support packwall, built-in slip casting pipe road, and protected using corresponding steel bar framework structure, to prevent slip casting
Pipeline is damaged when main supporting part plays a role；After being completed a main support packwall and reaching some strength, i.e.,
High-water material grouting filling operation is carried out in the auxiliary filling area of its closing, the filling in whole goaf is formed, it is to avoid with
Time elapses, and main support packwall occurs unstability and collapsed side, and then generation goaf top plate large area caving；Aided in when to goaf
After filling area slip casting is finished, with working face continue push ahead, absciss layer will occur for face roof, now using height
Water material carries out corresponding grouting and reinforcing by the grouting pipe being laid in top plate to roof delamination area, weakens absciss layer area upward
Extension, strengthens the control to subsidence；
After working face pushes ahead certain distance from open-off cut, you can to 1~3 drilling of top board construction in goaf, bore
Hole depth is got to top plate and occurred at the main key stratum of absciss layer, before main support packwall is formed, and completes the note in roof delamination area
Pipeline laying work is starched, the grouting pipeline is laid along goaf top plate；
The auxiliary filling section length depends primarily on roof periodic water component L, support width of wall body d, wall and constructed certainly extremely
The time t and face propulsion speed v of supporting role are played, its length should be less than L-vt-d, it is ensured that main support wall is applied
During work, working face can be exploited normally, and top plate will not occur disrumpent feelings；At the advance of the face to disrumpent feelings position, main support is filled
Effective support can be formed by filling out band, it is to avoid occurrence of large-area is caving disaster.
2. a kind of subregion placement method for being used to control tight roof large area caving disaster according to claim 1, its
It is characterised by：For pile up the discarded spoil that the main support packwall in goaf is used be in full mine normal production produced by
, by downhole gangue refuse reclamation, original materials transportation system burden can be mitigated while avoiding spoil being promoted to ground
Energy consumption, and ground spoil stack the production brought with processing and environmental problem.
3. a kind of subregion placement method for being used to control tight roof large area caving disaster according to claim 1, its
It is characterised by：The main support packwall in goaf cross section is trapezoidal, and trapezoidal top width is 5~10m, is highly corresponding exploitation
Highly, its specific size can according to mine discard spoil amount adjust accordingly, if mine spoil yield is larger, can directly by
Unnecessary discarded spoil is laid in auxiliary filling area, it is to avoid because support width of wall body is excessive, so as to cause construction volume and slip casting
Amount increased dramatically, and influence working face mining fltting speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802272.8A CN105317459B (en) | 2015-11-19 | 2015-11-19 | A kind of subregion placement method for being used to control tight roof large area caving disaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802272.8A CN105317459B (en) | 2015-11-19 | 2015-11-19 | A kind of subregion placement method for being used to control tight roof large area caving disaster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105317459A CN105317459A (en) | 2016-02-10 |
| CN105317459B true CN105317459B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510802272.8A Expired - Fee Related CN105317459B (en) | 2015-11-19 | 2015-11-19 | A kind of subregion placement method for being used to control tight roof large area caving disaster |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108204244A (en) * | 2016-12-20 | 2018-06-26 | 中国矿业大学(北京) | The spoil interval method of collecting coal by the means of filling |
| CN106894838B (en) * | 2017-02-21 | 2019-10-18 | 长沙矿山研究院有限责任公司 | Large area penetrates through dead zone bag type partition substep filling administering method |
| CN106958446B (en) * | 2017-06-01 | 2019-02-12 | 湖南科技大学 | A kind of strata movement of steeply-inclined seam mining and the control method of subsidence |
| CN107916933A (en) * | 2017-11-20 | 2018-04-17 | 河南理工大学 | Stay equipment, method in a kind of tight roof coal seam goaf space |
| CN108412542B (en) * | 2018-01-18 | 2019-03-12 | 山东科技大学 | A kind of wide lane digging gangue paste body filling of high seam is at lane method |
| CN108756944B (en) * | 2018-05-29 | 2019-10-08 | 中国煤炭地质总局勘查研究总院 | The method of surface subsidence is controlled during mining |
| CN108999634B (en) * | 2018-07-26 | 2019-07-05 | 中国矿业大学 | Surface drilling realizes that a hole of water damage prevention and treatment and surface settlement control is mostly used method |
| CN109681206A (en) * | 2018-08-20 | 2019-04-26 | 华北科技学院 | A method of filling control ground settlement of mining |
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| CN110145363B (en) * | 2019-04-30 | 2024-03-29 | 中国矿业大学(北京) | Roof control method for realizing transition from fully mechanized mining face caving to filling mining |
| CN110593874B (en) * | 2019-10-09 | 2020-12-01 | 中国矿业大学 | Full-filling method for strong and weak full mining of coal mine |
| CN112096449B (en) * | 2020-10-26 | 2022-08-26 | 西安科技大学 | Coal mine goaf paste strip grouting combined filling mining method |
| CN112360550A (en) * | 2020-10-28 | 2021-02-12 | 安徽理工大学 | Method for injecting and filling coal-based solid waste paste in low-position roof separation zone in gob-side entry retaining |
| CN113550782B (en) * | 2021-08-20 | 2022-11-29 | 太原理工大学 | Gob-side entry retaining working face goaf gas and natural ignition composite disaster treatment method |
| CN113914931B (en) * | 2021-09-30 | 2023-11-28 | 山东科技大学 | Method for goaf sealing and burning inhibition by gangue isolation belt in coal mining process |
| CN114542174B (en) * | 2022-02-25 | 2023-02-28 | 安徽理工大学 | Controllable grouting filling method in roadway |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203925576U (en) * | 2014-05-15 | 2014-11-05 | 山东科技大学 | The gob-side entry retaining support structure of utilizing erecting dense individual props spoil to construct |
| CN104100271B (en) * | 2014-06-28 | 2016-07-20 | 山东科技大学 | Pre-pick is led cave filling artificial side secondary multiplexing roadside support and is become lane method |
| CN104712348B (en) * | 2014-12-11 | 2019-03-29 | 山东科技大学 | Large-mining-height working surface is along empty fender laneway support method under the hard direct top of one kind |
| CN104929666A (en) * | 2015-04-30 | 2015-09-23 | 中国矿业大学 | Top breaking gob-side entry retaining method for tender roofs |
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