CN109707442A - A kind of quick grouting filling bag in the goaf synchronous with coal cutting and its coal-mining method - Google Patents
A kind of quick grouting filling bag in the goaf synchronous with coal cutting and its coal-mining method Download PDFInfo
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- CN109707442A CN109707442A CN201910174700.5A CN201910174700A CN109707442A CN 109707442 A CN109707442 A CN 109707442A CN 201910174700 A CN201910174700 A CN 201910174700A CN 109707442 A CN109707442 A CN 109707442A
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Abstract
The present invention relates to coal mining method and technology fields, and in particular to a kind of quick grouting filling bag in the goaf synchronous with coal cutting and its coal-mining method.Filling progress existing in the prior art mismatch asynchronous with coal cutting progress is solved, filling velocity is slow, and filling support effect is poor, system complex, invests the problems such as high.The technical solution adopted by the present invention includes bag body, the top of the bag body can rise top-type by pleated structure formation, pleated structure internal upper part, which crosses, is provided with secondary grouting pipe, the outer wall surrounding of the bag body is provided with connector, the leading flank of the bag body is vertically arranged with several aqueducts, several internal drainage apertures are provided on the face that bag body is in contact with aqueduct, the outer wall bottom of each aqueduct is provided with drainage hole, the leading flank top center position of bag body is provided with injected hole, the rib up and down and midfeather of the leading flank of the bag body are provided with bar pipe, problem of the prior art is solved by certain coal-mining method.
Description
Technical field
The present invention relates to coal mining method and technology fields, and in particular to a kind of quick slip casting in the goaf synchronous with coal cutting
Fill bag and its coal-mining method.
Background technique
Currently, the coal winning technology of coal mine mainstream is comprehensive mechanical coal mining, coal working face normal cyclic operation is " to mine
Machine cut coal, pushes away drag conveyor at moving hydraulic support " 3 processes circulation, whole caving methods management top plates.Goaf filling technique reason
By above having solid barren rock artificial (or mechanical) filling, pipeline grouting filling etc., but because there are workers to enter goaf operation safety
Do not guarantee, system complex, investment is high, work efficiency is low, large labor intensity, fills the problems such as support effect is poor or disadvantage, and mostly heir
After fill, be spaced discontinuous fragmentary filling, filling progress mismatch asynchronous with coal cutting progress causes goaf filling technique more
Exist for theory, rarely has implementation in practice.To find out its cause, be because do not find a kind of device of rational design and cooperate it is suitable
Solution, both coal cutting technique and goaf filling technique are organically combined, the two process is merged, it is made
Progress simultaneously match.
Summary of the invention
The present invention is to solve filling progress existing in the prior art mismatch asynchronous with coal cutting progress, filling velocity
Slowly, support effect is poor, system complex, invests the problems such as high for filling, provides a kind of quick slip casting in the goaf synchronous with coal cutting and fills
Fill out bag and its coal-mining method.
In order to solve the problems existing in the prior art, the technical scheme is that a kind of goaf synchronous with coal cutting is fast
Fast grouting filling bag, it is characterised in that: including bag body, the top of the bag body can rise top-type, pleat by pleated structure formation
Wrinkle structure internal upper part, which crosses, is provided with secondary grouting pipe, and the outer wall surrounding of the bag body is provided with connector, the bag body
Leading flank be vertically arranged with several aqueducts, it is small that several internal drainages are provided on the face that bag body is in contact with aqueduct
Hole, the outer wall bottom of each aqueduct are provided with drainage hole, and the leading flank top center position of bag body is provided with injected hole, described
Bag body leading flank rib up and down and midfeather be provided with bar pipe.
The height of the bag body is mining thickness.
The coal cutting that the width of the bag body is n times is cut deeply, and n is more than or equal to 1.
The length of the bag body is one group moving hydraulic support quantity × single hydraulic support width.
The connector is velcro or shackle.
A kind of coal-mining method of the quick grouting filling bag in the goaf synchronous with coal cutting, it is characterised in that: the coal mining
The normal cyclic operation process of method are as follows:
Process 1) coalcutter coal cutting；
Process 2) moving hydraulic support:
Design of Powered Supports has a front and back top beam, is coal mining activity face under preceding top beam, is packing job face under rear top beam, under rear top beam
Grouting Pipe is hung, Grouting Pipe interval connects grouting gun by threeway, for giving filling bag slip casting；It is applied on the bottom plate of hydraulic support rear
If drainpipe, go out liquid for filling wash rice to be discharged；Grouting Pipe, grouting gun, drainpipe are moved together with hydraulic support, are reused；
Process 3) hanging bag:
Bag is filled from open-off cut beginning first row, before moving hydraulic support process, bag rear wall will be filled by holdfast and cut eyewall
It is fixed, after moving hydraulic support process, connecting rod is penetrated in bar pipe on front side of filling bag, is fixed on upper rib connecting rod using holdfast
Lower rib connecting rod is fixed on bottom plate by top plate, is fixed middle brace rod with eyewall is cut by connecting band and holdfast, is connected to centre
Extension bar is limited, then drainpipe is connect with the drainage hole on front side of bag body, completes the installation of single filling bag, several pocket types
Obturation is end to end at continuous horizontally-arranged, the same face length of total length.
The second filling bag queued will fill bag rear wall by connector and fill with upper row before moving hydraulic support process
It fills out bag wall velcro bonding or shackle is engaged connection, after moving hydraulic support process, penetrate connecting rod in the bar pipe of filling bag front side,
Upper rib connecting rod is fixed on top plate using holdfast, lower rib connecting rod is fixed on bottom plate, it will by connecting band and its velcro
Middle brace rod is Nian Jie with upper row's obturation bag wall, limits to middle brace rod, then by the row on front side of drainpipe and bag body
Water hole connects, the installation of the single filling bag of completion, several pocket type obturations are end to end at continuous horizontally-arranged, the same work of total length
Face length；
Process 4) slip casting:
Slip casting is carried out using pipe-pump system, and slip casting ability matches with coal mining speed, the note that will be connect with Grouting Pipe by threeway
It starches the injected hole on front side of rifle insertion filling bag and carries out slip casting, until filling bag is filled with and comes into full contact with top plate, injecting paste material is solid
The support to top plate can be realized after change, the wash rice of drainpipe discharge goes out liquid and is recycled by pump defeated time mixing plant of pressurization；
Process 5) drag conveyor is pushed away, it can be with process 3,4 parallel operations.
Begin from open-off cut, first filling row is support row, and injecting paste material is that high ash cash compares material；Second is played filling row
Both ends be support end, support end injecting paste material is high ash cash than material, and injecting paste material is low ash between filling two support ends of row
Cash compares material；Adjacent two rows are engaged close continuous arrangement by velcro or shackle, and as n-th of row, goaf range reaches top
It when plate is first or periodic weighting step pitch, and is support row, two support ends of first row and n-th of support row and filling row are combined into
Braced frame so far completes a braced frame circulation；It so repeats, until entire working face extraction finishes.
The injecting paste material is the mixing slurry of spoil and cement.
Compared with prior art, advantages of the present invention is as follows:
The present invention realizes that filling is synchronous with coal cutting technique progress matching by the special length size design of bag body；
The present invention can realize quick hanging bag installation by velcro, without the quick mortar depositing construction of template；
The present invention is realized by can rise roof construction and expands use scope of the invention suitable for different coal mining height；
The present invention can be achieved multiple filling bags and continuously install, and installation method is simple, fast, improves the filling to goaf and supports effect
Fruit；
Fill method whole process of the present invention uses normal cyclic operation, system matches, synchronization, smooth, succinct, the easy behaviour of process
Make, it is at low cost；
The present invention carries out the packing jobs such as hanging bag, slip casting after hydraulic support under the protection of top beam, ensure that the safety of operation；
The present invention can effectively support top plate by the braced frame that support row is composed with filling two support ends of row；
The main filler in goaf of the present invention is solid waste --- gangue, and cost is controlled, and also solves gangue
The environmental protection problem of solidification disposal of waste；
Injecting paste material: high ash cash is more relatively high than the ratio between material cement and spoil, such as 1:4, need to specifically adjust according to the actual situation
Match, mainly plays a supportive role；Low ash cash is than material: the ratio between cement and spoil are relatively low, such as 1:10, specifically need to be according to reality
Situation allotment, mainly plays packing action；
The benefit that obturation of the present invention is horizontal, indulges equal continuous arrangement design has: 1. improving the enabling capabilities to top plate, effectively control top
Plate stratum and surface movement sink, and groundwater resources are protected；2. filling bag slip casting can rely on neighbouring obturation and filling bag
Self structure is realized without template slip casting；3. improving goaf circularity, its interior space is avoided to catchment gas collection, ignition bring safety
Hidden danger；4. disposing more gangue solid wastes.
Slip casting of the present invention is carried out using pipe-pump system, high degree of automation, and labor intensity of workers is low.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is scheme of installation of the invention；
Fig. 5 is coal working face plan view of the invention；
Fig. 6 is the A-A cross-sectional view of Fig. 5；
In figure, 1. bag bodies, 2. injected holes, 3. drainage holes, 4. aqueducts, 5. internal drainage apertures, 6. velcro, 7. bar pipes, 8.
Secondary grouting pipe, 9. pleated structures, 10 connecting rods, 11 holdfasts, 12 connecting bands, 13 Grouting Pipes, 14 grouting guns, 15 drainpipes,
16. coalcutter, 17. drag conveyors, 18. hydraulic supports, top beam before 19. hydraulic supports, top beam after 20. hydraulic supports, 21.
Support row, 22. support ends, 23. filling rows, 24. braced frames, 25. coal mining activity faces, 26. packing job faces, 27. connect mixing plant,
28. coal seam.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of quick grouting filling bag (referring to figures 1-3) in the goaf synchronous with coal cutting of the present invention, including bag body 1, institute
The top for the bag body 1 stated can rise top-type by the formation of pleated structure 9, and 9 internal upper part of pleated structure, which crosses, is provided with secondary grouting pipe
8, the outer wall surrounding of the bag body 1 is provided with connector 6, and connector 6 is velcro or shackle etc., the bag body 1
Leading flank is vertically arranged with several aqueducts 4, and it is small to be provided with several internal drainages on the face that bag body 1 is in contact with aqueduct 4
The outer wall bottom in hole 5, each aqueduct 4 is provided with drainage hole 3, and the filler in bag will be filled by being realized by internal drainage aperture
Wash rice water outlet discharge is precipitated, is discharged by the drainage hole of water guide bottom of the tube, keeps obturation fine and close, to improve the support energy to top plate
Power；The leading flank top center position of bag body 1 is provided with injected hole 2, the rib up and down and middle ware of the leading flank of the bag body 1
Every being provided with bar pipe 7.
The present invention is cuboid, the same mining thickness of height, and width design is that 1 times of (or several times) coal cutting is cut deeply, in this way may be used
It realizes that filling is synchronous with coalcutter coal cutting, often cuts a knife (or number knife) coal, fill the goaf of identical drilling depth；Its Design of length
For one group moving hydraulic support range, i.e., one group moving hydraulic support quantity × single hydraulic support width, that designs in this way is good
It is in realizing that filling is synchronous with moving hydraulic support, one group hydraulic support of every Forward fills the goaf of same range, realizes
Filling progress is with moving hydraulic support progress synchronous.
Outer wall of the present invention is provided with velcro, it can be achieved that, realization and neighbour Nian Jie with the velcro in existing obturation bag wall
Row and adjacent bag continuously closely connect, and form continuous obturation, improve goaf filling support effect, realize quick hanging bag installation；
Rear side relies on neighbouring existing obturation, and connecting rod 10 is worn by bar pipe in front side, and will be vertically connected with bar 10 and be individually fixed in top
Plate or bottom plate, middle brace rod 10 are limited by connecting band, are realized without the quick mortar depositing construction of template.
Bag body upper design of the present invention has and can rise top-type, and can rise top internal upper part design has secondary grouting hose, in order to adapt to
Coal seam or mining height may change, i.e., the height in goaf may change in a certain range, and filling bag is to process finished product in advance,
Height is fixed, and can rise top and be advantageous in that rises it by slip casting until coming into full contact with top plate, to adapt to a certain range
Height change；Grouting filling object will form a small amount of remaining space after wash rice water densification contraction, pass through secondary grouting hose pair
Remaining space carries out secondary grouting, can further improve circularity and connects top rate, to further increase the support effect to top plate
Fruit.
Installation and implementation process of the invention: (- Fig. 6 referring to fig. 4)
A kind of coal-mining method normal cyclic operation of the quick grouting filling bag in the goaf synchronous with coal cutting is " 5 processes circulation ":
Process 1) 16 coal cutting of coalcutter；
Process 2) moving hydraulic support 18:
Design of Powered Supports has front and back top beam, is coal mining activity face 25 under preceding top beam 19, is packing job face 26 under rear top beam 20,
Grouting Pipe 13 is hung under top beam afterwards, Grouting Pipe interval connects grouting gun 14 by threeway, for giving filling 1 slip casting of bag；Hydraulic branch
Drainpipe 15 is laid on the bottom plate of frame rear, goes out liquid for filling wash rice to be discharged；Grouting Pipe, grouting gun, drainpipe etc. are with hydraulic support
It moves together, reuses；
Process 3) hanging bag:
Bag is filled from open-off cut beginning first row, before moving hydraulic support process, bag rear wall will be filled by holdfast 11 and cut eye
Wall is fixed, and after moving hydraulic support process, penetrates connecting rod 10 in bar pipe 7 on front side of filling bag, using holdfast by upper rib connecting rod
It is fixed on top plate, lower rib connecting rod is fixed on bottom plate, is fixed middle brace rod with eyewall is cut by connecting band 12 and holdfast,
Middle brace rod is limited, then drainpipe is connect with the drainage hole 3 on front side of bag body, completes the installation of single filling bag,
Several pocket type obturations are end to end at continuous horizontally-arranged, the same face length of total length；
The second filling bag queued will fill bag rear wall by connector 6 and upper row fills bag before moving hydraulic support process
Wall velcro bonding or shackle are engaged connection, after moving hydraulic support process, penetrate connecting rod in bar pipe 7 on front side of filling bag, sharp
Upper rib connecting rod is fixed on top plate with holdfast, lower rib connecting rod is fixed on bottom plate, by connecting band and its velcro will in
Between connecting rod it is Nian Jie with upper row's obturation bag wall, middle brace rod is limited, then by the draining on front side of drainpipe and bag body
The connection of hole 3, the installation of the single filling bag of completion, several pocket type obturations are end to end at continuous horizontally-arranged, the same work of total length
Face length.
Process 4) slip casting:
Slip casting is carried out using pipe-pump system, and slip casting ability matches with coal mining speed, by what is connect with Grouting Pipe 13 by threeway
Injected hole 2 on front side of the insertion filling bag of grouting gun 14 carries out slip casting, until filling bag is filled with and comes into full contact with top plate, slip casting material
The support to top plate can be realized in material after solidifying, the wash rice of drainpipe discharge goes out liquid to be made by defeated time circulation of mixing plant 27 of pump pressurization
With.
Selective secondary grouting can be carried out to remaining space as desired by secondary grouting hose, voidage can be reduced
An order of magnitude, to realize the accurate support to top plate or control.
Process 5) drag conveyor 17 is pushed away, it can be with process 3,4 parallel operations.
Begin from open-off cut, first filling row is support row 21, and injecting paste material is high ash cash than material (cement and spoil
Mixing slurry)；Second both ends for playing filling row is support end 22, and support end injecting paste material is high ash cash than material, filling row two
Injecting paste material is that low ash cash compares material between support end；Adjacent two rows are engaged close continuous arrangement by velcro or shackle, when
N-th of row when goaf range reaches first top plate or periodic weighting step pitch, and is support row, first row and n-th of support row
It is combined into braced frame 24 with two support ends of filling row, a braced frame circulation is so far completed, so repeats, until entire
Working face extraction finishes.
The above five steps process constitutes a coal mining activity normal cyclic.Due to the hanging bag process of bashing, Cementer
Sequence and coalcutter coal cutting, moving hydraulic support, to push away drag conveyor be all coal mining activity normal cyclic process, therefore can guarantee goaf
Filling process is synchronous with coal cutting technique mating.
The method of the present invention is advantageous in that the arrangement of obturation and roof weighting is caving rule and is adapted, braced frame and its
Interior obturation collectively constitutes support obturation and is effectively supported to top plate, because main filler is solid waste --- coal
Spoil, cost are controlled.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention belong to guarantor of the invention
Protect range.
Claims (7)
1. a kind of quick grouting filling bag in the goaf synchronous with coal cutting, it is characterised in that: including bag body (1), the bag body
(1) top is formed by pleated structure (9) can rise top-type, and pleated structure (9) internal upper part, which crosses, is provided with secondary grouting pipe
(8), the outer wall surrounding of the bag body (1) is provided with connector (6), the bag body (1) if leading flank be vertically arranged with
An aqueduct (4) is done, is provided with several internal drainage apertures (5), each aqueduct on the face that bag body (1) is in contact with aqueduct
(4) outer wall bottom is provided with drainage hole (3), and the leading flank top center position of bag body (1) is provided with injected hole (2), described
Bag body (1) leading flank rib up and down and midfeather be provided with bar pipe (7).
2. the quick grouting filling bag in a kind of goaf synchronous with coal cutting according to claim 1, it is characterised in that: described
Bag body (1) height be mining thickness.
3. the quick grouting filling bag in a kind of goaf synchronous with coal cutting according to claim 1 or 2, it is characterised in that:
The coal cutting that the width of the bag body (1) is n times is cut deeply, and n is more than or equal to 1.
4. the quick grouting filling bag in a kind of goaf synchronous with coal cutting according to claim 3, it is characterised in that: described
The length of bag body (1) be one group of time moving hydraulic support quantity × single hydraulic support width.
5. the quick grouting filling bag in a kind of goaf synchronous with coal cutting according to claim 4, it is characterised in that: described
Connector (6) be velcro or shackle.
6. a kind of coal-mining method of the quick grouting filling bag in goaf synchronous with coal cutting according to claim 1, special
Sign is: the normal cyclic operation process of the coal-mining method are as follows:
Process 1) coalcutter (16) coal cutting；
Process 2) moving hydraulic support (18):
Design of Powered Supports has front and back top beam, is under preceding top beam (19) coal mining activity face (25), makees under rear top beam (20) for filling
Industry face (26) hangs Grouting Pipe (13) under rear top beam, and Grouting Pipe interval is by threeway connection grouting gun (14), for filling bag
(1) slip casting；Drainpipe (15) are laid on the bottom plate of hydraulic support rear, go out liquid for filling wash rice to be discharged；Grouting Pipe, grouting gun, row
Water pipe is moved together with hydraulic support, is reused；
Process 3) hanging bag:
Bag is filled from open-off cut beginning first row, before moving hydraulic support process, by holdfast (11) bag rear wall will be filled and cut
Eyewall is fixed, and after moving hydraulic support process, penetrates connecting rod (10) in bar pipe (7) on front side of filling bag, using holdfast by upper rib
Connecting rod is fixed on top plate, and lower rib connecting rod is fixed on bottom plate, by connecting band (12) and holdfast by middle brace rod with cut
Eyewall is fixed, and is limited to middle brace rod, then drainpipe is connect with the drainage hole (3) on front side of bag body, and completion is individually filled
The installation of bag is filled out, several pocket type obturations are end to end at continuous horizontally-arranged, the same face length of total length；
The second filling bag queued will fill bag rear wall by connector (6) and upper row fills before moving hydraulic support process
Bag wall velcro bonding or shackle are engaged connection, and bar pipe (7) is interior after moving hydraulic support process, on front side of filling bag penetrates connection
Upper rib connecting rod is fixed on top plate using holdfast, lower rib connecting rod is fixed on bottom plate, passes through connecting band and its velcro by bar
Middle brace rod is Nian Jie with upper row's obturation bag wall, middle brace rod is limited, then will be on front side of drainpipe and bag body
Drainage hole (3) connection, completes the installation of single filling bag, several pocket type obturations are end to end at continuous horizontally-arranged, total length
Same face length；
Process 4) slip casting:
Slip casting is carried out using pipe-pump system, and slip casting ability matches with coal mining speed, will be connect with Grouting Pipe (13) by threeway
Grouting gun (14) insertion filling bag on front side of injected hole (2) carry out slip casting, until filling bag is filled with and comes into full contact with top plate,
The support to top plate can be realized in injecting paste material after solidifying, the wash rice of drainpipe discharge goes out liquid and passes through pump defeated time mixing plant (27) of pressurization
It is recycled；
Process 5) drag conveyor (17) are pushed away, it can be with process 3,4 parallel operations；
Begin from open-off cut, first filling row is support row (21), and injecting paste material is that high ash cash compares material；Second is played filling row
Both ends be support end (22), support end injecting paste material is high ash cash than material, and injecting paste material is between filling two support ends of row
Low ash cash compares material；Adjacent two rows are engaged close continuous arrangement by velcro or shackle, and as n-th of row, goaf range reaches
It to when top plate is first or periodic weighting step pitch, and is support row, two support end groups of first row and n-th support row and filling row
It synthesizes braced frame (24), so far completes a braced frame circulation；It so repeats, until entire working face extraction finishes.
7. a kind of coal-mining method of the quick grouting filling bag in goaf synchronous with coal cutting according to claim 5, special
Sign is: the injecting paste material is the mixing slurry of spoil and cement.
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| CN201910174700.5A CN109707442B (en) | 2019-03-08 | 2019-03-08 | Goaf rapid grouting filling bag synchronous with coal cutting and coal mining method thereof |
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| CN109707442B CN109707442B (en) | 2023-09-12 |
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| CN110258366A (en) * | 2019-07-02 | 2019-09-20 | 重庆交通大学 | Using fabricated construction, the Arch Bridges Strengthening method that can actively carry |
| CN110700855A (en) * | 2019-09-10 | 2020-01-17 | 太原理工大学 | Method for preventing horizontal dislocation at high roof contact rate of gob-side entry retaining roadside support |
| CN111075505A (en) * | 2019-12-17 | 2020-04-28 | 天地科技股份有限公司 | Coal mine fully-mechanized coal mining face segmented filling mining method |
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| CN111075505B (en) * | 2019-12-17 | 2021-03-16 | 天地科技股份有限公司 | Coal mine fully-mechanized coal mining face segmented filling mining method |
| CN111236943A (en) * | 2020-02-27 | 2020-06-05 | 中煤能源研究院有限责任公司 | Mining method for advancing, cutting and retreating filling of open-air end slope |
| CN111236943B (en) * | 2020-02-27 | 2021-06-08 | 中煤能源研究院有限责任公司 | Mining method for advancing, cutting and retreating filling of open-air end slope |
| CN111305896A (en) * | 2020-03-11 | 2020-06-19 | 西安科技大学 | Method for reducing damage by utilizing filling point source type interval support of hydraulic support rear bag |
| CN111305896B (en) * | 2020-03-11 | 2022-02-22 | 西安科技大学 | Method for reducing damage by utilizing filling point source type interval support of hydraulic support rear bag |
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| CN112727538B (en) * | 2021-02-05 | 2022-12-13 | 中煤科工集团西安研究院有限公司 | Drum-type sealing device and method for goaf filling |
| CN113431626A (en) * | 2021-08-03 | 2021-09-24 | 中国矿业大学 | Gob-side entry retaining gob graded filling mining device and method thereof |
| CN113431626B (en) * | 2021-08-03 | 2022-07-19 | 中国矿业大学 | Gob-side entry retaining gob graded filling mining device and method thereof |
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