CN110080813A - One kind cutting top wall supporting device and method - Google Patents
One kind cutting top wall supporting device and method Download PDFInfo
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- CN110080813A CN110080813A CN201910376444.8A CN201910376444A CN110080813A CN 110080813 A CN110080813 A CN 110080813A CN 201910376444 A CN201910376444 A CN 201910376444A CN 110080813 A CN110080813 A CN 110080813A
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003245 coal Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 238000004945 emulsification Methods 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000012407 engineering method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0086—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor in galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
It is a kind of to cut top wall supporting device and cut top wall supporting method using the device, the top wall supporting device of cutting includes pedestal, top beam and column, the column at least two, the upper end of the column and the top beam are hinged, the column lower end is fixedly connected with the base, and the column retractable supports are between pedestal and top beam；The pedestal is equipped at least one lower hydraulic side and pushes away support rod, and the lower hydraulic side pushes away support rod one end and connect with the pedestal, and the lower hydraulic side pushes away the lower part that support rod is used to support the vertical stone-blocking structure of self-contained lane joint-cutting side；The top beam, which is set, pushes away support rod there are two the hydraulic side in top, and the hydraulic side in top pushes away the top that support rod is used to support the vertical stone-blocking structure of self-contained lane joint-cutting side.
Description
Technical field
The present invention relates to a kind of colliery tunnel support device and method more particularly to a kind of no coal column self-contained lane to cut top wall supporting
Device and using the device cut top wall supporting method.
Background technique
The pillar energy of the coal as China, yield and consumption figure occupy the world the throughout the year since the 1980s
One.Meanwhile coal is maintaining international energy pattern, is ensureing Chinese energy safety, the sound development of support national economy, maintenance society
The fields such as stabilization, development strategy new industry have critical role and effect.
For a long time, China's coal-mine uses always one working face of back production to stay and sets a protection pillar and at least dig in advance
Into the mining method of two gate roads, this kind of mining way considerably increase coal mining tunnelling engineering amount and exploitation at
This, and prepare a working face and usually require 1~2 annual advance tunnel in advance, largely affect coal working face
It connects.Meanwhile this mining method is also easy to produce the dynamic disasters phenomenon such as rock burst and bump, particularly with Deep Mine, lane
Large deformation, the earth pressure that road country rock generates etc. are difficult to be controlled, it is easier to which safety accident occurs for tunnel.In addition, staying the shield set
Lane coal column is difficult to produce under mine, causes serious waste to state coal resource.
Since the 1950s, China starts to carry out edge air gallery technology research and application, so that without coal pillar mining skill
Art is possibly realized, and substantially increases coal recovery rate, reduces tunnelling amount.However, conventional edge air gallery technology
One of supporting wall is often formed by the way of the fillings such as spoil, soft mould concrete, high percentage of water rapid solidifying material carries out supporting, work
Journey amount is big, and support cost is high, and often there is larger stress and concentrate and keep Supporting Structure deformation larger or fail.
At the beginning of 21 century, with the proposition that " cut top galianconism beam " is theoretical, top release is cut without coal column self-contained lane production technique gradually
Grow up, and successively form one working face of back production only to tunnel a gate road in advance and without reserved coal pillar
" 110 engineering method " and the entire panel of back production without tunneling gate road and without staying " the N00 engineering method " for setting protection pillar in advance.
For no coal column self-contained lane production technique, vertical supporting and side are mainly carried out using intensive hydraulic prop at present
It carries out cutting top and wall supporting to the mode of support, this top wall supporting mode of cutting needs a large amount of hydraulic props, and workload is huge
And supporting effect is poor.It is published within 2016 " keeping off cash support technology by 110 engineering method inter-roads and its control way is ground for coal mine support
Study carefully " text discloses a kind of four-column type gear cash bracket of no coal column self-contained lane production technique, and this gear cash bracket is provided with one piece
Contour waste rock board approximate with tunnel is caving spoil for lateral support goaf, and the region supporting for keeping off cash near support is imitated
Fruit is preferable, but its volume is larger, and can be seen that according to its structure and layout and a bracket is only allowed to be propped up in entire tunnel
Support, effective support still need to carry out cutting top and shield by the way of intensive individual prop outside apart from limited in effective support distance
Side.
Above- mentioned information are only used for reinforcing the understanding to background of the invention, therefore it disclosed in the background technology part
It may include the information constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
A large amount of hydraulic single props are needed for top wall supporting mode existing in the prior art of cutting, and workload is huge and supporting
The problems such as effect is poor, disclosure main purpose are to provide a kind of structure simple, and easy to operate, what be can be recycled cuts top shield
Help device and method.
One kind cutting top wall supporting device, and the top wall supporting device of cutting includes pedestal, top beam and column: the column is at least two
A, the upper end of the column and the top beam are hinged, and the column lower end is fixedly connected with the base, the scalable branch of column
Support is between pedestal and top beam；The pedestal is equipped at least one lower hydraulic side and pushes away support rod, and the lower hydraulic side pushes away branch
Strut one end is connect with the pedestal, and the lower hydraulic side pushes away the vertical gear cash that support rod is used to support self-contained lane joint-cutting side
The lower part of structure；The top beam, which is set, pushes away support rod there are two the hydraulic side in top, and the hydraulic side in top pushes away support rod and is used to support
The top of the vertical stone-blocking structure of self-contained lane joint-cutting side.
According to an embodiment of the present invention, it is two that the lower hydraulic side, which pushes away support rod, two lower hydraulics
Side pushes away support rod along tunnel axial alignment,
According to an embodiment of the present invention, the movable end that two lower hydraulic sides push away support rod is connected under one
Portion side pushes away crossbeam, and the lower side pushes away crossbeam extending direction and is parallel to tunnel axial direction.
According to an embodiment of the present invention, it is two that the hydraulic side in the top, which pushes away support rod, and two tops are hydraulic
Side pushes away support rod along tunnel axial alignment,
According to an embodiment of the present invention, the movable end that two hydraulic sides in top push away support rod is connected on one
Portion side pushes away crossbeam, and the upper side pushes away crossbeam extending direction and is parallel to tunnel axial direction.
According to an embodiment of the present invention, it is axial or vertical to be parallel to tunnel for at least two column orientations
In tunnel axial direction.
According to an embodiment of the present invention, described two columns are hydraulic cylinder, are set in the middle part of the shaft of described two columns
There are liquid-filling valve and pressure-relief valve, when the pressure more than setting hydraulic in the column, the relief valve, which can automatically open, unloads column
Pressure, when pressure is reduced to setting pressure or less in column, pressure-relief valve is automatically closed, and column is made to keep relative constant pressure.
According to an embodiment of the present invention, it is additionally provided with column fixing sleeve between at least two columns, covered respectively
Each column is connect, to reinforce the connection with pedestal.
On the other hand the embodiment of the present invention, provides a kind of no coal column self-contained lane and cuts top wall supporting method, include the following steps:
(1) joint-cutting side vertical direction hangs metal mesh in tunnel, and installs U-shaped steel along the vertical direction, is close to U-shaped steel
Metal mesh；
(2) top wall supporting device is cut in the installation of joint-cutting side as previously described in tunnel, increase column and is adjacent to back
Surface stops pressurization after it reaches and meets setting load required pressure；
(3) support rod is pushed away to upper side and lower side pushes away support rod and carries out fluid injection stretching, upper side is made to push away support rod under
The movable end that portion side pushes away support rod is close to gear cash U-shaped steel；
(4) after working face pushes through certain distance, goaf partial panels rock will be filled in mine pressure with top wall supporting is cut
Simultaneously bashing is voluntarily caving under the strength supporting role set along joint-cutting, being caving the spoil to get off will be in metal mesh and gear cash U
It keeps stablizing and being unlikely to bloat to tunnel under the barrier effect of fashioned iron；
(5) it after stability of the roadway, gradually removes and cuts top wall supporting device to allow to be recycled.
According to an embodiment of the present invention, described two columns are hydraulic cylinder, are set in the middle part of the shaft of described two columns
There are liquid-filling valve and pressure-relief valve；When back sinks, deformation is larger to cause emulsion pressure inside column to increase to rated pressure
Afterwards, relief valve automatically turns on and starts pressure release, and after column internal emulsification hydraulic coupling drops to rated pressure or less, relief valve is immediately
It is automatically closed, to keep column internal emulsification liquid that there is relative constant pressure.
As shown from the above technical solution, no coal column self-contained lane of the invention cut top wall supporting device and method the advantages of and actively
Effect is: the top wall supporting apparatus structure of cutting is simple, easy to operate, can be recycled, inclines to head-room and back
Rake angle it is adaptable, do not influenced by coal working face back production.
Detailed description of the invention
Consider following the following detailed description of the embodiment of the present invention in conjunction with the accompanying drawings, various targets of the invention,
Feature and advantage will become apparent.Attached drawing is only exemplary diagram of the invention, is not necessarily drawn to scale.
In the accompanying drawings, same appended drawing reference always shows same or similar component.Wherein:
Fig. 1 is the forward sight structural schematic diagram of first embodiment of the invention；
Fig. 2 is the side structure schematic view of first embodiment of the invention；
Fig. 3 is the forward sight structural schematic diagram of second embodiment of the invention；
Fig. 4 is that second embodiment of the invention upper side pushes away beam structure schematic diagram；
Description of symbols:
1- pedestal；2- top beam；3- column；4- upper side pushes away crossbeam；5- lower side pushes away crossbeam；6- upper side pushes away support rod；
7- lower side pushes away support rod；8- column connector sleeve；9- liquid-filling valve；10- relief valve；11- hoisting ring；12- fork truck plays shackle plate；
13- top beam non-skid band；14- upper side pushes away crossbeam non-skid band.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
Shown in reference picture 1, Fig. 2, the present invention cuts top wall supporting device without coal column self-contained lane and mainly includes pedestal 1, top beam 2 and stand
Column 3, pedestal 1 and top beam 2 are all integral rigidity structure, and 2 upper surface of top beam is equipped with top beam non-skid band 13, can effectively prevent top beam 2
Sliding is generated with back, it is main vertical force transferring structure that column 3, which is hydraulic telescoping structure,.
It according to first embodiment of the invention, include wherein at least two columns 3,3 upper end of column hingedly connects with top beam 2
It connects, lower end and the affixed connection of pedestal 1, and reinforces connecting by column fixing sleeve 8 and pedestal 1, to improve the stability of column 3.
One embodiment according to the present invention, a side selection on pedestal 1, which is set, pushes away support rod 7 there are two lower side,
The orientation of two columns 3 is regarded as being parallel to tunnel axis (this is that basic arrangement back side is illustrated), side
Pushing away 7 extending direction of support rod may be selected to be orientation (such as Fig. 2) perpendicular to two columns 3, and side, which pushes away support rod 7 and may be selected, is
It is horizontally disposed or close horizontally disposed.It is hingedly fixed with pedestal 1 that side pushes away the selection of support rod 7.Side push away support rod 7 may be selected to be it is hydraulic
Cylinder.
One end that lower side pushes away support rod 7 is fixed on pedestal 1, and another movable end pushes away crossbeam 5 with lower side and connect, under
Portion side pushes away crossbeam 5 and provides side-thrust, and the orientation that two lower sides push away support rod 7 is identical as the orientation of two columns 3,
I.e. approximately along tunnel axis direction, the long side extension direction that lower side pushes away crossbeam 5 is parallel with the orientation of two columns 3,
The effect that lower side pushes away crossbeam 5 is to support the lower part of the vertical stone-blocking structure such as scalable U-shaped steel；In a kind of specific embodiment,
It is all 63mm that two lower sides, which push away 7 cylinder diameter of support rod, and bar diameter is all 45mm, and stroke is all 960mm, it is possible to provide side-thrust 98kN,
It can provide side draw 48kN, working resistance is all 109kN.
One embodiment according to the present invention, a side, which is set, on top beam 2 pushes away support rod 6 there are two upper side, and two vertical
The orientation of column 3 is regarded as being parallel to tunnel axis, and upper side pushes away support rod 6 and extends perpendicularly to two columns 3
(such as Fig. 2 signal) of orientation, one end that upper side pushes away support rod 6 is fixed on top beam 2, and the other end and upper side push away crossbeam
4 connections, push away crossbeam 4 for upper side and provide side-thrust, two upper sides push away the orientation of support rod 6 and the row of two columns 3
Column direction is identical, i.e., approximately along tunnel axis direction, upper side pushes away the long side extension direction of crossbeam 4 and the arrangement of two columns 3
Direction is identical, and the effect that upper side pushes away crossbeam 4 is to support the top of the vertical stone-blocking structure such as scalable U-shaped steel；It is a kind of specific
In embodiment, it is all 63mm that two upper sides, which push away 7 cylinder diameter of support rod, and bar diameter is all 45mm, and stroke is all 960mm, it is possible to provide side
Thrust 98kN, it is possible to provide side draw 48kN, working resistance are all 109kN.
First specific embodiment according to the present invention, to be double telescopic, the inside and outside cylinder diameter of column 3 is respectively column 3
180mm and 250mm, the inside and outside diameter of column 3 are respectively 160mm and 235mm, setting load 1545kN, working resistance 2000kN.
According to first embodiment of the invention, can by adjusting two columns 3 lifting height official post top beam 2 along two
A 3 orientation of column can produce 15 ° of pivot angles (with respect to the horizontal plane), be not more than when back axially has partially along tunnel
It can realize that top beam 2 and back are in close contact when 15 ° of inclinations by adjusting the pivot angle of top beam 2；When back partially along
When axially having perpendicular to tunnel greater than 15 ° of inclinations, can in such a way that the lower side in the top of top beam 2 increases the bed courses such as sleeper come
Realize the close contact of top beam 2 and back.
According to first embodiment of the invention, top beam 2 can produce 5 ° of pivot angles along 3 orientation of vertical two columns,
It is controlled by the gap between two 3 column cap pin shafts of column and two 3 column cap pin holes of column.
According to first embodiment of the invention, it is equipped with liquid-filling valve 9 and pressure-relief valve 10 in the middle part of the shaft of two columns 3, when
Hydraulic when being more than setting pressure in column 3, relief valve 10, which can automatically open, makes 3 release of column, when pressure is reduced to and sets in column 3
When below constant-pressure, pressure-relief valve 10 is automatically closed, and column 3 is made to keep relative constant pressure.
According to first embodiment of the invention, every power of top wall supporting device, movement are cut in a kind of no coal column self-contained lane
Source with realize all completed by hydraulic system.
Fig. 3 gives second embodiment, and the main distinction of it and one embodiment is that lower side pushes away support rod 7
Be arranged in the orientation perpendicular to two columns 3 of pedestal 1 on one side on, upper side push away support rod 6 be arranged in top beam 2 hang down
Directly in the orientation of two columns 3 on one side on.That is this embodiment middle and lower part side pushes away support rod 7 and upper side pushes away branch
Strut 6 is substantially parallel with the orientation of two columns 3, and the orientation of two columns 3 may be selected to be perpendicular to tunnel axis.
In this way, the present invention, which cuts top wall supporting device, can be suitable for the tunnel that top plate has larger tilt angle.Two of them
There is independent hydraulic system, they can carry out flexible up and down relatively independently between column 3.As shown in Figure 1, a heel post
3 high and another heel posts 3 are low, can relative tilt top plate carry out supporting, stay lane to carry out side side and push away.
It is understood that the side in both examples above push away crossbeam should all be towards the side side in tunnel, in order to opposite side
The lane Mian Liu carries out side and pushes away.And both examples above structure cut top wall supporting device can flexible choice according to demand, in Liu Xiang
There is the position of other equipment occupied space, first embodiment can be selected in order to which two columns are each parallel to lane side and be not take up sky
Between, and wall supporting device is pushed up in cutting for the settable second embodiment being spaced, and cuts two column orientations of top wall supporting device in this way
Perpendicular to lane side side, and certain top beam and/or bottom beam inclination angle can be preset, can be provided to lane side side stronger
Support, and can prevent from deforming.
Two kinds of cutting for embodiment push up wall supporting device since the hydraulic of column can be adjusted independently of each other, so can be for difference
The inclined top plate in direction or bottom plate are arranged, and arrangement will not be restricted by orographic condition, do not need to be customized again.
Fig. 4 gives the structural schematic diagram that two embodiment upper sides of the invention push away crossbeam 4, pushes away crossbeam 4 in upper side
Outer surface is equipped with upper side and pushes away crossbeam non-skid band 14, and upper side can be effectively prevent to push away the vertically gear cash such as crossbeam and scalable U-shaped steel
Structure slides.It is worth noting that two embodiment lower sides, which push away crossbeam 5, also uses identical structure, it is specific at this
It is not listed one by one in embodiment.
Now in conjunction with Fig. 1-4 the present invention will be described in detail using cut top wall supporting device method, comprising:
(1) joint-cutting side vertical direction hangs metal mesh in tunnel, and installs U-shaped steel along the vertical direction, is close to U-shaped steel
Metal mesh；
(2) top wall supporting device is cut in the installation of joint-cutting side in tunnel, and injects high-pressure emulsification from liquid-filling valve by control valve
Liquid rises column 3 and is adjacent to back surface, continues to inject high-pressure emulsion from liquid-filling valve 9, makes to emulsify inside column 3
Hydraulic coupling increases, and stops pressurization after it reaches and meets setting load required pressure；
(3) support rod 6 is pushed away to upper side and lower side pushes away support rod 7 and carries out fluid injection, upper side is made to push away support rod 6 and lower part
Side pushes away support rod 7 and pushes that upper side pushes away crossbeam 4 and lower side pushes away crossbeam 5 and is close to gear cash U-shaped steel respectively；
(4) after working face pushes through certain distance, goaf partial panels rock will be filled in mine pressure with top wall supporting is cut
Simultaneously bashing is voluntarily caving under the strength supporting role set along joint-cutting, being caving the spoil to get off will be U-shaped in metal mesh, gear cash
Steel, upper side push away crossbeam 4 and lower side pushes away and keeps stablizing and being unlikely to bloat to tunnel under the barrier effect of crossbeam 5；
(5) after back sinking deformation is larger, and 3 inside emulsion pressure of column is caused to increase to rated pressure, pressure release
Valve automatically turns on and starts pressure release, and after 3 internal emulsification hydraulic coupling of column drops to rated pressure or less, relief valve closes automatically immediately
It closes, to keep 3 internal emulsification liquid of column that there is relative constant pressure；
(6) it after stability of the roadway, gradually removes and cuts top wall supporting device to allow to be recycled.
As shown from the above technical solution, no coal column self-contained lane of the invention cut top wall supporting device and method the advantages of and actively
Effect is: the top wall supporting apparatus structure of cutting is simple, easy to operate, can apply high setting load, can be recycled, to tunnel height
Degree and back tilt angle it is adaptable, do not influenced by coal working face back production.
Although disclosing the present invention referring to some embodiments, before without departing substantially from the scope of the present invention and scope
It puts, a variety of variants and modifications can be carried out to the embodiment described.It will therefore be appreciated that the invention is not limited to illustrated
Embodiment, protection scope should by appended claims content and its equivalence structure and scheme limit.
Claims (10)
1. one kind cuts top wall supporting device, which is characterized in that the top wall supporting device of cutting includes pedestal, top beam and column:
The column at least two, the upper end of the column and the top beam are hinged, and the column lower end is fixed with the pedestal
Connection, the column retractable supports are between pedestal and top beam；
The pedestal is equipped at least one lower hydraulic side and pushes away support rod, and the lower hydraulic side pushes away support rod one end and the bottom
Seat connection, the other end is movable end, and the movable end pushes away crossbeam with lower side and connect, and the lower side pushes away crossbeam as self-contained lane
The lower part of the vertical stone-blocking structure of joint-cutting side；The top beam, which is set, pushes away support rod there are two the hydraulic side in top, and the top is hydraulic
Side, which pushes away support rod and pushes away crossbeam with upper side, to be connect, and the upper side pushes away vertical stone-blocking structure of the crossbeam as self-contained lane joint-cutting side
Top.
2. cutting top wall supporting device as described in claim 1, which is characterized in that it is two that the lower hydraulic side, which pushes away support rod,
Two lower hydraulic sides push away support rod along tunnel axial alignment.
3. cutting top wall supporting device as claimed in claim 2, which is characterized in that two lower hydraulic sides push away the work of support rod
Moved end is respectively connected with the lower side and pushes away crossbeam, and the lower side pushes away crossbeam extending direction and is parallel to tunnel axial direction.
4. cutting top wall supporting device as described in claim 1, which is characterized in that described two hydraulic sides in top push away support rod along lane
Road axial alignment.
5. cutting top wall supporting device as claimed in claim 4, which is characterized in that described two hydraulic sides in top push away support rod respectively
A upper side is connected with by movable end and pushes away crossbeam, and the upper side pushes away crossbeam extending direction and is parallel to tunnel axial direction.
6. cutting top wall supporting device as described in claim 1, which is characterized in that at least two column orientations are parallel to
Tunnel is axial or perpendicular to tunnel axial direction.
7. cutting top wall supporting device as claimed in any one of claims 1 to 6, which is characterized in that the column is hydraulic cylinder, described
Liquid-filling valve and pressure-relief valve are equipped in the middle part of the shaft of column, when the pressure more than setting hydraulic in the column, the relief valve can
Automatically opening makes column release, and when pressure is reduced to setting pressure or less in column, pressure-relief valve is automatically closed, and keeps column
Relative constant pressure.
8. cutting top wall supporting device as claimed in any one of claims 1 to 6, which is characterized in that between at least two vertical La
It is additionally provided with column fixing sleeve, is socketed each column respectively, to reinforce the connection with pedestal.
9. top wall supporting method is cut in a kind of no coal column self-contained lane, include the following steps:
(1) joint-cutting side vertical direction hangs metal mesh in tunnel, and installs U-shaped steel along the vertical direction, and U-shaped steel is made to be close to metal
Net；
(2) installation of joint-cutting side is as claimed in any one of claims 1 to 8 in tunnel cuts top wall supporting device, increase simultaneously column
It is adjacent to back surface, stops pressurization after it reaches and meets setting load required pressure；
(3) support rod is pushed away to upper side and lower side pushes away support rod progress fluid injection and makes its stretching, upper side is made to push away support rod under
The movable end that portion side pushes away support rod is close to gear cash U-shaped steel；
(4) after working face pushes through certain distance, goaf partial panels rock in mine pressure and will cut top wall supporting device
Simultaneously bashing is voluntarily caving under strength supporting role along joint-cutting, being caving the spoil to get off will be in metal mesh and gear cash U-shaped steel
Barrier effect under keep stablize and be unlikely to tunnel bloat；
(5) it after stability of the roadway, gradually removes described cut and pushes up wall supporting device to allow to be recycled.
10. cutting top wall supporting method as claimed in claim 9, which is characterized in that the column is hydraulic cylinder, the column of the column
Liquid-filling valve and pressure-relief valve are equipped in the middle part of body；When back sinks, deformation is larger to cause emulsion pressure inside column to increase to volume
After constant-pressure, relief valve automatically turns on and starts pressure release, after column internal emulsification hydraulic coupling drops to rated pressure or less, pressure release
Valve is automatically closed immediately, to keep column internal emulsification liquid to have relative constant pressure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520185A (en) * | 2020-04-27 | 2020-08-11 | 中国矿业大学 | End slope mining goaf filling machine and filling method thereof |
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| CN110080813B (en) | 2021-08-13 |
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