CN209483343U - The hydraulic orientation of underground coal mine cuts top equipment - Google Patents
The hydraulic orientation of underground coal mine cuts top equipment Download PDFInfo
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- CN209483343U CN209483343U CN201822125978.7U CN201822125978U CN209483343U CN 209483343 U CN209483343 U CN 209483343U CN 201822125978 U CN201822125978 U CN 201822125978U CN 209483343 U CN209483343 U CN 209483343U
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- hydraulic
- long tube
- coal mine
- feed liquor
- push rod
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Abstract
The utility model discloses a kind of hydraulic orientations of underground coal mine to cut top equipment, the equipment is mainly made of explosion-proof pumping plant, feed liquor long tube, time liquid long tube, lateral thruster, for lateral thruster by being made up of connecting tube, the concatenated multiple side push rods of connecting rod, multiple hydraulic tops are arranged in each side push rod side.Using the construction method of the equipment, when construction, first advance drilling, lag working face installs lateral thruster in drilling, explosion-proof pumping plant gives lateral thruster to provide hydraulic coupling, and hydraulic top pushes away side simultaneously when feed liquor long tube feed liquor, generates huge thrust splitting free face roof strata, to cut top, goaf side pressure from surrounding rock is reduced；Feed liquor long tube stops feed flow and releases stress, and returns liquid long tube feed flow, and hydraulic top is withdrawn.The utility model can be used for coal mine and cut top release, without fields such as coal pillar mining, Controlling of Coal Outburst.
Description
Technical field
The utility model belongs to underground mine without coal pillar mining field, and in particular to a kind of hydraulic orient of underground coal mine cuts top
Equipment.
Background technique
In no coal pillar mining is applied, top technology is cut by implementing orientation to top plate, a part of top plate cantilever beam is cut
It falls, reduces top plate bring pressure, improve the stability of country rock, reduce gob side entry rock deformation, improve supporting safety,
Reduce support cost.Mainly top plate is oriented by blasting technique and hydraulic fracturing technology at present and cuts top release.Both
It is to play platoon drilling to top plate, high pressure is generated in hole, adjacent space rock generates crack under stretching force effect, to cut off top
Plate.But in the production practices of mine, however it remains some problems.Top technology is cut in explosion, and what Blasting shock wave generated disturbs
It moving larger, influences the stabilization in tunnel, the toxic and harmful gas that explosion generates is more, and there are the risks of miso-fire, and security risk is high,
Explosion cuts top and exists simultaneously many uncertain problems, and the spacing and inclination angle key parameter of explosion generally require underground trials, and quick-fried
Broken period needs personnel to withdraw, time-consuming and laborious, affects job schedule to a certain extent, causes working face to connect nervous, and
Explosive is as controlled commodity, and buying and transport are all very stringent, and formality is complicated.The range that waterpower cuts top technical application is wider, but water
Power fracturing technique causes face roof water content to increase, and is that mud stone etc. meets the defeated and dispersed mine of the easy expansion of water for roof and floor,
It is unfavorable for working face and back management, supporting is more difficult, to seriously affect downhole production.Therefore, above-mentioned to overcome
Disadvantage realizes safe and efficient production, needs to develop a kind of novel coal mine incision top equipment.
Utility model content
The purpose of this utility model is that in view of the above shortcomings of the prior art, providing a kind of hydraulic orientation of underground coal mine
Cut top equipment, structure is simple, small in size, light-weight, easy to operate, when work is without friction, without impact, it is noiseless, without nocuousness
Gas, anhydrous softening top plate have the series of advantages such as high operating efficiency, at low cost, safety, energy conservation.
What the utility model adopts the following technical solution to realize:
The hydraulic orientation of underground coal mine cuts top equipment, including explosion-proof pumping plant, N number of feed liquor long tube, N number of go back to liquid long tube and N number of side
Pushing device；Wherein,
Explosion-proof pumping plant returns liquid long tube with 1 by 1 feed liquor long tube with each lateral thruster and connect；Lateral thruster is by passing through
Connecting tube connects to form concatenated multiple side push rod compositions with connecting rod, and lateral thruster further includes that two to be cascaded are arranged in
Protective case between a sides adjacent push rod；Each side push rod is made of stick cylinder and multiple hydraulic tops, and stick cylinder side spaced radial is set
It is equipped with the movable cavity of multiple receiving hydraulic tops, cavity is divided into admission chamber and back to the fluid chamber, admission chamber and back to the fluid chamber by hydraulic top
It is connect respectively with liquid inlet channel and time fluid passage, liquid inlet channel and time fluid passage both ends are pierced by stick cylinder axial end face and connect respectively with high pressure connection
It connects；The high pressure connection that the side push rod of end is not connected with connecting tube one end is closed by screw plug.
The utility model, which further improves, to be, the axial ends face of side push rod is provided with hole female adapter.
The utility model, which further improves, to be, is connected between two to be cascaded sides adjacent push rod by connecting tube
It connects, is provided with high pressure DN connector in the middle part of connecting tube.
The utility model, which further improves, to be, feed liquor long tube and time liquid long tube and side push rod pass through high pressure connection respectively
Connection.
The utility model, which further improves, to be, the guarantor of two to be cascaded sides adjacent push rod join domain installation
Sheath is tubular, and is made of the plastic material with retractility.
The utility model, which further improves, to be, is mounted on valve on each feed liquor long tube and time liquid long tube.
Consider the complexity of underground mine construction environment, the utility model has following beneficial technical effect:
The hydraulic orientation of underground coal mine provided by the utility model cuts top equipment, mainly by explosion-proof pumping plant, feed liquor long tube, time liquid
Long tube, lateral thruster composition, lateral thruster connecting tube, the concatenated multiple side push rods of connecting rod by being made up of, each side push rod
Multiple hydraulic tops are arranged in side；The equipment have it is small in size be readily transported, labor intensity is low, does not influence production work progress
The advantages of.
When construction, first advance drilling, lag working face installs lateral thruster in drilling, and explosion-proof pumping plant pushes away dress to side
Offer hydraulic coupling is provided, hydraulic top pushes away side simultaneously when feed liquor long tube feed liquor, huge thrust splitting free face roof strata is generated, thus
Top is cut, goaf side pressure from surrounding rock is reduced；Feed liquor long tube stops feed flow and releases stress, and returns liquid long tube feed flow, and hydraulic top is withdrawn.
Therefore, the utility model does not need explosive, and restricting condition for use is few；And top plate does not fill the water, no softening top plate negative effect；Safety
Height, hydraulic controllable, no explosion is without impact, without taking complicated safety measure；It cuts and pushes up high-efficient, several minutes of side push rod
Top process is cut in completion；Reusability, operation and maintenance cost are very low；Construction technology is relatively simple, and worker easily learns to slap
It holds.
In conclusion the utility model, which can be used for coal mine, cuts top release, without fields such as coal pillar mining, Controlling of Coal Outburst.
Detailed description of the invention
Fig. 1 is the utility model in coal work surface construction schematic three dimensional views；
Fig. 2 is the utility model three dimensional structure diagram；
Fig. 3 is the side push rod internal structure sectional view of the utility model；
Fig. 4 is the utility model in gob side entry retaining inscribe top schematic diagram.
Description of symbols: the explosion-proof pumping plant of 1-；2-1- feed liquor long tube；2-2- returns liquid long tube；3- connecting tube；4- connecting rod；
The side 5- push rod；6- protective case；7- stick cylinder；8- hydraulic top；9-1- admission chamber；9-2- back to the fluid chamber；10-1- liquid inlet channel；10-2- returns liquid
Road；11- high pressure connection；The female adapter of the hole 12-；13- hydraulic support；14- crossheading；Wall by the lane 15-；The goaf 16-, 17-
Top plate drilling.
Specific embodiment
The utility model is described further below in conjunction with attached drawing.
A coal mine uses edge air gallery technology, and concrete wall is as roadside support, 8 coal of A stope of coal mines, 8 coal average thickness
For 3.2m, flat seam, buried depth 700m or so belongs to highly gassy mine, and working face is arranged two crossheadings, respectively transported suitable
Slot and air return way carry out gob side entry retaining to haulage gate.Gob side entry retaining pressure is reduced using top technology is cut.Thickness of wall body by lane
1.0m, height 3.2m.
As shown in Figures 1 to 4, the hydraulic orientation of underground coal mine provided by the utility model cuts top equipment, by 1 explosion-proof pumping plant
1,5 feed liquor long tube 2-1,5 times liquid long tube 2-2 and N number of lateral thruster composition, explosion-proof pumping plant 1 pass through with each lateral thruster
1 feed liquor long tube 2-1 returns liquid long tube 2-2 with 1 and connect；The lateral thruster by connecting tube 3 and the connection of connecting rod 4 by being formed
Concatenated multiple side push rods 5 form, and lateral thruster also contains the protective case 6 between two sides adjacent push rods being cascaded；
Each side push rod 5 is made of stick cylinder 7 and multiple hydraulic tops 8, and it is living that 7 side spaced radial of stick cylinder is provided with multiple receiving hydraulic tops 8
Cavity is divided into admission chamber 9-1 and back to the fluid chamber 9-2 by dynamic cavity, hydraulic top 8, admission chamber 9-1 and back to the fluid chamber 9-2 respectively with into
Fluid passage 10-1 connect with fluid passage 10-2 is returned, liquid inlet channel 10-1 and time both ends fluid passage 10-2 be pierced by 7 axial end face of stick cylinder respectively with height
Crimp head 11 connects；The high pressure connection 11 that the side push rod 5 of end is not connected with 3 one end of connecting tube is closed by screw plug.
The axial ends face of side push rod 5 is provided with hole female adapter 12, and sides adjacent push rod 5 is connected by connecting tube 3, even
High pressure DN connector is arranged in 3 middle part of adapter tube.
Feed liquor long tube 2-1 and time liquid long tube 2-2 is connect by high pressure connection 11 respectively with side push rod 5.
The protective case 6 of 5 join domain of side push rod installation is tubular, is made of the plastic material with certain retractility.
Valve is installed respectively on each feed liquor long tube 2-1 and each time liquid long tube 2-2.
The hydraulic orientation of underground coal mine provided by the utility model cuts the construction method of top equipment, and its step are as follows:
1) it in haulage gate 14, faces upward tiltedly beat top plate drilling 17 in advance, top plate drilling 17 is arranged in front of the coal working face
On straight line, each 17 depth of top plate drilling is 6-10m, and inclination angle is 10-20 °, between two neighboring top plate drilling 17 between
Away from for 0.5-2.0m；
It 2) is one group per adjacent 3-6 top plate drilling 17, every hole is successively filled in 2-5 side and pushed away at coal working face rear
Stick 5 is connected between two sides adjacent push rods 5 being cascaded by connecting tube 3 and connecting rod 4, and is arranged between side push rod 5
Protective case 6 adjusts hydraulic top 8 towards 16 direction of goaf after all filling in group；
3) it is connected between feed liquor long tube 2-1 and time side liquid long tube 2-2 push rod 5 by high pressure connection 11；
4) and oil inlet valve to be opened, closes oil return valve, starts explosion-proof pumping plant 1, the hydraulic top 8 with the side push rod 5 of group stretches out,
Huge thrust is generated, free face roof strata is cleaved；
5) when hydralic pressure gauge reaches preset pressure value, oil return valve is opened, returns liquid long tube feed flow, hydraulic top 8 is received
It returns, equipment is withdrawn in subsequent top plate drilling 17, complete construction；
6) it is sequentially completed the presplitting construction of other group of top plate drilling 17；
7) as coal working face persistently promotes, 16 top plate of goaf is caving along the top seam of cutting of drilling 17, in end liquid
It presses and is caving on the outside of wall 15 by the lane at 13 rear of bracket, top work is cut in completion.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (6)
1. the hydraulic orientation of underground coal mine cuts top equipment, which is characterized in that including explosion-proof pumping plant (1), N number of feed liquor long tube (2-1), N
A time liquid long tube (2-2) and N number of lateral thruster；Wherein,
Explosion-proof pumping plant (1) is returned liquid long tube (2-2) with 1 by 1 feed liquor long tube (2-1) with each lateral thruster and is connect；Side pushes away
By forming concatenated multiple side push rods (5) by connecting tube (3) and connecting rod (4) connection and forming, lateral thruster further includes device
Protective case (6) between two sides adjacent push rods (5) being cascaded is set；Each side push rod (5) is by stick cylinder (7) and more
A hydraulic top (8) composition, stick cylinder (7) side spaced radial are provided with the movable cavity of multiple receiving hydraulic tops (8), hydraulic top
(8) cavity is divided into admission chamber (9-1) and back to the fluid chamber (9-2), admission chamber (9-1) and back to the fluid chamber (9-2) respectively with liquid inlet channel
(10-1) and fluid passage (10-2) connection is returned, liquid inlet channel (10-1) and time both ends fluid passage (10-2) are pierced by stick cylinder (7) axial end face point
It is not connect with high pressure connection (11)；The high pressure connection (11) that the side push rod (5) of end is not connected with connecting tube (3) one end is blocked up by screw
Head closing.
2. the hydraulic orientation of underground coal mine according to claim 1 cuts top equipment, which is characterized in that the axial direction of side push rod (5)
Both ends of the surface are provided with hole female adapter (12).
3. the hydraulic orientation of underground coal mine according to claim 1 cuts top equipment, which is characterized in that two to be cascaded
It is connected between sides adjacent push rod (5) by connecting tube (3), is provided with high pressure DN connector in the middle part of connecting tube (3).
4. the hydraulic orientation of underground coal mine according to claim 1 cuts top equipment, which is characterized in that feed liquor long tube (2-1) and
It returns liquid long tube (2-2) and is connect respectively by high pressure connection (11) with side push rod (5).
5. the hydraulic orientation of underground coal mine according to claim 1 cuts top equipment, which is characterized in that two to be cascaded
The protective case (6) of sides adjacent push rod (5) join domain installation is tubular, and is made of the plastic material with retractility.
6. the hydraulic orientation of underground coal mine according to claim 1 cuts top equipment, which is characterized in that each feed liquor long tube (2-
1) and on time liquid long tube (2-2) it is mounted on valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201822125978.7U CN209483343U (en) | 2018-12-18 | 2018-12-18 | The hydraulic orientation of underground coal mine cuts top equipment |
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| CN201822125978.7U CN209483343U (en) | 2018-12-18 | 2018-12-18 | The hydraulic orientation of underground coal mine cuts top equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372508A (en) * | 2018-12-18 | 2019-02-22 | 中煤能源研究院有限责任公司 | The hydraulic orientation of underground coal mine cuts top equipment and its construction method |
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2018
- 2018-12-18 CN CN201822125978.7U patent/CN209483343U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372508A (en) * | 2018-12-18 | 2019-02-22 | 中煤能源研究院有限责任公司 | The hydraulic orientation of underground coal mine cuts top equipment and its construction method |
| CN109372508B (en) * | 2018-12-18 | 2024-03-12 | 中煤能源研究院有限责任公司 | Underground hydraulic directional roof cutting equipment for coal mine and construction method thereof |
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