CN106523011B - A kind of simple light hydraulic support and use the holder Sub-Level Caving coal-mining method - Google Patents
A kind of simple light hydraulic support and use the holder Sub-Level Caving coal-mining method Download PDFInfo
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- CN106523011B CN106523011B CN201611197831.8A CN201611197831A CN106523011B CN 106523011 B CN106523011 B CN 106523011B CN 201611197831 A CN201611197831 A CN 201611197831A CN 106523011 B CN106523011 B CN 106523011B
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- 238000005065 mining Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003245 coal Substances 0.000 claims abstract description 124
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 76
- 239000010959 steel Substances 0.000 claims description 76
- 239000010878 waste rock Substances 0.000 claims description 31
- 239000004567 concrete Substances 0.000 claims description 15
- 239000004570 mortar (masonry) Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000011372 high-strength concrete Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 210000003518 stress fiber Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000032258 transport Effects 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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
-
- 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
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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)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of simple light hydraulic supports, including bottom plate, lower tablet, upper backup pad, support reinforcing structure, coal discharge outlet support adjustment mechanism and it is vertically arranged more than four jacking cylinders on bottom plate, it is connected by first axle between lower tablet lower surface and jacking cylinder upper end, upper backup pad is arranged in parallel in above lower tablet, and support reinforcing structure setting is between upper backup pad and lower tablet；Coal discharge outlet support adjustment mechanism is arranged on bottom plate and on the outside of jacking cylinder；Simple light supports caving mining coal-mining method is used the invention also discloses a kind of.Upper and the next two coal discharge outlets are arranged on a holder and carry out Sub-Level Caving coal-mining method by the present invention, a referred to as frame dibit Sub-Level Caving coal-mining method, effectively adapt to the mechanical mining in the corner field with "nine squares" and medium and small field with "nine squares" of large-scale mine, the Coal Seam Thickness Change of bigger can effectively be adapted to, realize the higher rate of extraction, back production efficiency is improved, holder damage and large area roof fall can be effectively prevent.
Description
Technical field
It is put the invention belongs to safety of coal mines coal-mining technique field more particularly to a kind of simple light hydraulic support and using the holder
Top coal coal-mining method.
Background technology
Currently, in coal enterprise, when coal seam is thicker in field with "nine squares" and top coal is easily broken, in order to improve production efficiency and coal
Recovery ratio, generally use Sub-Level Caving coal-mining method carry out resource exploitation.Sub-Level Caving coal-mining method is substantially the edge in high seam
Bottom arrange a 2~3m of mining height coal wall, carry out back production with conventional method, using mine pressure effect or
Paving manually to loosen method, make crushing voerhead coal above holder at after granular media by holder rear（Top）It releases, and via scraper plate
Conveyer transports working face.But in some medium and small colliery enterprise fields with "nine squares" or large coal mine enterprise corner field with "nine squares", due to coal seam thickness
Degree changes greatly, relatively difficult using large-scale mining, of high cost.In order to improve production efficiency and coal recovery rate, lead to
Resource exploitation is carried out frequently with light-duty simple rack Sub-Level Caving coal-mining method.Existing caving coal technology is as follows：
Existing caving coal technology is as follows：Coal discharge outlet is arranged in the tail end lower part of simple rack, generally use single-wheel, interval,
More mouthfuls put coal, since the haulage way of coal seam, carry out, first put on the odd numbers holder such as 1#, 3#, 5# to tailgate direction successively
Top coal closes coal discharge outlet after seeing certain cash, leaves larger back coal；Lag a distance is put on the even numbers holder such as 2#, 4#, 6#
Top coal, a spheroid is released in the back coal that will be left behind.Such process for stoping disadvantage：
（1）Poor to irregular coal seam adaptation, coal seam is thicker（More than 6m）When, part top coal is not put not come out, and back production is caused
Rate is low.
（2）When coal seam is thicker, back production is dangerous, and spoil falling speed is fast, intense impact holder, and accident is more frequent.
（3）Light-duty simple rack stress is unstable, and the support strength of the support plate of cradle top is relatively low, is easy by top coal pressure
It is curved, and stability is poor, be easy to cause the sinking of holder front end, and tail portion upwarps, and moves Jia difficulties, lengthens working hours, increase
Labor intensity.
Thus, it is necessary to a kind of light-duty one frame twoport Sub-Level Caving coal-mining method of simple rack of modified is provided, on overcoming
State defect.
Invention content
In order to solve the shortcoming in existing pre-stress fibre sheet material stretching end anchoring process, the present invention provides one kind
Securely and reliably, it can be exploited for the coal seam for being more than 6m thickness, the simple light hydraulic support and use that support strength is high, stability is good
The holder Sub-Level Caving coal-mining method.
To achieve the above object, concrete scheme of the invention is as follows：A kind of simple light hydraulic support, including bottom plate, lower tablet,
Upper backup pad, support reinforcing structure, coal discharge outlet support adjustment mechanism and more than four jacking cylinders on bottom plate are vertically set on,
It being connected by first axle between lower tablet lower surface and jacking cylinder upper end, upper backup pad is arranged in parallel in above lower tablet,
Support reinforcing structure setting is between upper backup pad and lower tablet；Coal discharge outlet support adjustment mechanism is arranged on bottom plate and positioned at top
On the outside of oil-lifting jar；
Coal discharge outlet support adjustment mechanism includes that lifting drive cylinder, the interior guide post being located on bottom plate are vertically fixed in lower end
With outer guide post, interior guide post and outer guide post are equipped with two, and an interior guide post and an outer guide post are located at bottom plate
Edge side, another interior guide post and another outer guide post are located at the edge other side of bottom plate, interior guide post and outer guiding
Column is fixedly connected between upper end by connecting plate, and tilt prop, interior guide post are provided between interior guide post lower inside and bottom plate
It is provided with waste rock board between outer guide post, guide groove is vertically equipped on the inside of outer guide post, rotates and sets on the outside of waste rock board
There are the directive wheel rolled along guide groove, lifting drive cylinder to be located on the inside of waste rock board, lifts drive cylinder upper end and waste rock board
It is connected by link between inside, lifts and be hinged by second hinge between drive cylinder upper end and link inside bottom,
It is fixedly connected with waste rock board inner surface on the outside of link.
Support reinforcing structure includes at least three steel pipes disposed in parallel, and steel pipe top is welded with upper backup pad lower surface,
Steel pipe lower part and lower tablet upper surface are welded, and the inside at every steel pipe both ends is respectively provided with that there are one positioning connection structures；Each
Positioning connection structure includes radius rod and located lateral bar, and radius rod is equipped at least five and is mutually parallel and sets
It sets, the lower end of every radius rod is fixedly connected with steel pipe lower inner wall；The upper end of every radius rod is fixed to be connected
It connects there are one locating ring, passes through cross between two neighboring locating ring, between two locating rings and steel pipe side interior wall of both sides
It is connected to locating rod, all located lateral bars are arranged in straight line, and located lateral bar is vertical with radius rod；Same root
By the bar connecting in corresponding inserted to locating ring between two positioning connection structures in steel pipe, reinforcing bar is rolled at locating ring
Hook is curved, steel pipe both ends are arranged closure plate, concrete mortar is filled in steel pipe.
Using simple light supports caving mining coal-mining method, include the following steps：
1）, using fully-mechanized mining working gallery deep hole and shallow bore hole, detection of coal seam thickness variation, and draw coal seam thickness figure；
2）, process support reinforcement structure on the ground：Not all isometric 5 etc. first longitudinal in the welding of steel pipe lower inner wall
The radius rod of horizontal distance, the length of locating rod is both less than the radius of steel pipe longitudinally in each, while to ensure all indulge
To locating rod upper end line point-blank, then weld locating ring successively in the upper end of radius rod, finally again
Between two neighboring locating ring, locating ring and steel pipe walls branch between by weld located lateral bar connect it is in alignment, then
Using five reinforcing bars across the locating ring corresponding to two positioning connection structures, and the bending at locating ring by reinforcing bar both ends
At hook, upper plugging plate then is welded at steel pipe both ends, injected hole is open in steel pipe top, coagulation is injected into steel pipe by injected hole
Soil sand is starched, and while concrete mortar solidifies, upper first axle is welded in lower tablet lower surface, after concrete mortar solidification,
Several steel pipe uniform parallels are placed on lower tablet and steel pipe and lower tablet upper surface are welded as a whole, then in steel pipe
Upper backup pad is placed at top, and steel pipe and upper backup pad lower surface are welded as a whole；
3）, the simple light hydraulic support described in several groups transported in fully-mechanized mining working gallery and installed, along gallery
Length direction be sequentially arranged simple light hydraulic support, and every group of simple light hydraulic support is numbered in order：1#, 2#,
3# ... n# make the side wall with gallery on the outside of two outer guide posts of the coal discharge outlet support adjustment mechanism of each simple light hydraulic support
Contact starts jacking cylinder and contacts and have certain pressure with top coal layer lower surface by upper backup pad, due to lower tablet and upper branch
The support reinforcing structure being arranged between fagging makes upper backup pad keep good support flatness；
4）, according to the coal seam thickness figure of drafting, be more than 6m sections in thickness, first implement it is upper put coal, waste rock board is located at this time
The lower part of interior guide post and outer guide post is formed between waste rock board upper edge, lower tablet right side lower surface and two outer guide posts
Upper coal discharge outlet；Caving mode puts coal according to interval, sequence, equivalent, on the simple light hydraulic support of odd numbers of first putting 1#, 3#, 5#, 7# ...
The top coal above the simple light hydraulic support of even numbers that the top coal of side, then puts 2#, 4#, 6#, 8# ..., putting at every group of simple light hydraulic support
Coal amount is 0~3m3Or see cash, i.e. the thickness in coal seam of the thickness more than 6m sections is reduced to and the thinner seam thickness on the thickness figure of coal seam
After degree is consistent, start lifting drive cylinder, lifting drive cylinder is moved up upwardly through link driving waste rock board, waste rock board
On guide groove of the directive wheel in outer guide post move up, the upper coal discharge outlet on top is blocked, completes upper to put coal process；
5）, waste rock board lower edge, lower coal discharge outlet is formed on the right side of bottom plate between upper surface and two outer guide posts, from transferring coal
Mouthful place using single-wheel, interval, more mouthfuls put coal, since the haulage way of coal seam, successively to tailgate direction progress, first put 1#,
Top coal on the simple light hydraulic support of 3#, 5#, 7# ... odd numbers closes lower coal discharge outlet after seeing certain cash, leaves larger back coal；
A distance is lagged and put 2#, 4#, 6#, 8# ... the top coal above the simple light hydraulic support of even numbers, is released in the back coal that will be left behind
One spheroid completes coal mining activity.
Using above-mentioned technical proposal, simple light hydraulic support of the invention is due to being arranged between upper backup pad and lower tablet
Support reinforcing structure, support reinforcing structure uses more steel pipes, and reinforced concrete structure is arranged in steel pipe, and steel pipe is mainly used
In the high-strength concrete mortar contained and inside lock ring, making concrete, pressure has higher pressure resistance from top to bottom
Degree.After the solidification of high-strength concrete mortar under the axial direction of steel pipe and hoop constraint, compression strength greatly improves.
Reinforcing bar is by passing through locating ring to be arranged in steel pipe.The number of the locating ring of each positioning connection structure is equal to required
The total number for the reinforcing bar wanted.Since reinforcing bar has good tensile strength and ductility.Reinforcing bar is arranged in the lower part of steel pipe, reinforcing bar
Insertion is to reduce the rigidity of supporting rack to improve the tensile strength of supporting rack, prevents supporting rack from locally tensile shear occurring
Destruction and brittle break improve the stability of holder entirety.The intervention of reinforcing bar can also improve the ductility of supporting rack entirety simultaneously, prevent
Only in high confining pressure lower bracing frame brittle break.The length of locating rod is both less than the radius of steel pipe longitudinally in each, certain convenient for saving
Master Cost.
Locating ring reinforcing bar in construction just can smoothly be inserted into scheduled position in steel pipe, preferably play the tension of reinforcing bar
Intensity, and the place of the locating ring at steel pipe both ends is bent into hook can fully improve the tensile property of holder and steady in this way
It is qualitative.
Waste rock board is lifted using hydraulic-driven, and is rolled along guide groove by directive wheel, reduces the resistance moved up and down in this way
Power.It is fixedly connected by connecting plate between interior guide post and outer guide post upper end, is set between interior guide post lower inside and bottom plate
It is equipped with tilt prop, the stability in vertical direction of interior guide post and outer guide post can be fully improved in this way, in addition, due in oil
The bottom plate of cylinder bottom portion setting, promotes support strength, can avoid the larger slotting bottom of cylinder force in this way.
In conclusion the present invention mines for the thicker section Sub-Level Caving of irregular coal seam, a kind of safe efficient, operation is provided
Property strong holder and coal-mining method, i.e., upper and the next two coal discharge outlets are set on a holder and carry out Sub-Level Caving coal-mining method
（A referred to as frame dibit Sub-Level Caving coal-mining method）.It, can be effectively by the method when unstable high seam carries out back production
The mechanical mining for adapting to the corner field with "nine squares" and medium and small field with "nine squares" of large-scale mine, can effectively adapt to the Coal Seam Thickness Change of bigger,
It realizes the higher rate of extraction, improves back production efficiency, holder damage and large area roof fall can be effectively prevent.
Description of the drawings
Fig. 1 is the structural schematic diagram of the simple light hydraulic support of the present invention；
Fig. 2 is the transverse sectional view of steel pipe in Fig. 1；
Fig. 3 is that the present invention carries out putting schematic diagram when coal is mined by upper coal discharge outlet；
Fig. 4 is the schematic diagram in cross section in Fig. 3；
Fig. 5 is that the present invention carries out putting schematic diagram when coal is mined by lower coal discharge outlet；
Fig. 6 is the schematic diagram in cross section in Fig. 5.
Specific implementation mode
As shown in figures 1 to 6, a kind of simple light hydraulic support of the invention, including bottom plate 1, lower tablet 2, upper backup pad 3, support
Reinforcement structure, coal discharge outlet support adjustment mechanism and more than four jacking cylinders 4 on bottom plate 1 are vertically set on, lower 2 following table of tablet
Face and jacking cylinder are connected between 4 upper end by first axle 5, and upper backup pad 3 is arranged in parallel in 2 top of lower tablet, and support adds
Strong structure is arranged between upper backup pad 3 and lower tablet 2；Coal discharge outlet support adjustment mechanism is arranged on bottom plate 1 and positioned at jacking
4 outside of oil cylinder.
Coal discharge outlet support adjustment mechanism includes that lifting drive cylinder 6, the interior guiding being located on bottom plate 1 are vertically fixed in lower end
Column 7 and outer guide post 8, interior guide post 7 and outer guide post 8 are equipped with two, an interior guide post 7 and an outer guide post 8
In the edge side of bottom plate 1, another interior guide post 7 and another outer guide post 8 are located at the edge other side of bottom plate 1, inside lead
It is fixedly connected by connecting plate 9 between 8 upper end of column 7 and outer guide post, is arranged between 7 lower inside of interior guide post and bottom plate 1
There is tilt prop 10, waste rock board 11 is provided between interior guide post 7 and outer guide post 8,8 inside of outer guide post is vertically equipped with
Guide groove 12,11 outside rotation of waste rock board are equipped with the directive wheel 13 rolled in guide groove 12, and lifting drive cylinder 6 is located at gear cash
11 inside of plate, is connected between lifting on the inside of drive cylinder upper end and waste rock board 11 by link 14,6 upper end of lifting drive cylinder
Hinged by second hinge 15 between 14 inside bottom of link, 14 outside of link is fixed with 11 inner surface of waste rock board to be connected
It connects.
Support reinforcing structure includes at least three steel pipes 16 disposed in parallel, 16 top of steel pipe and 3 lower surface of upper backup pad
Welding, 16 lower part of steel pipe and lower 2 upper surface of tablet are welded, and the inside at every 16 both ends of steel pipe is respectively provided with that there are one be located by connecting
Structure；Each positioning connection structure includes radius rod 17 and located lateral bar 18, and radius rod 17 is equipped at least five
Root and arranged in parallel, the lower end of every radius rod 17 is fixedly connected with 16 lower inner wall of steel pipe；Every longitudinal direction is fixed
The upper end of position bar 17 is fixedly connected with there are one locating ring 19, between two neighboring locating ring 19, two locating rings 19 of both sides
It being connect by located lateral bar 18 between 16 side interior wall of steel pipe, all located lateral bars 18 are arranged in straight line,
Located lateral bar 18 is vertical with radius rod 17；It is inserted by corresponding between two positioning connection structures in same root steel pipe 16
The reinforcing bar 20 being set in locating ring 19 connects, and reinforcing bar 20 is bent into hook at locating ring 19, and closure plate 22, steel is arranged in 16 both ends of steel pipe
Concrete mortar 21 is filled in pipe 16.
The simple light supports caving mining coal-mining method of use of the present invention, includes the following steps：
1）, using fully-mechanized mining working gallery deep hole and shallow bore hole, detection of coal seam thickness variation, and draw coal seam thickness figure；
2）, process support reinforcement structure on the ground：Not all isometric 5 first longitudinal in the welding of 16 lower inner wall of steel pipe
Etc. horizontal distances radius rod 17, the length of locating rod 17 is both less than the radius of steel pipe 16 longitudinally in each, while to ensure
The line of all 17 upper ends of radius rod point-blank, then welds positioning successively in the upper end of radius rod 17
Circle 19, finally again between two neighboring locating ring 19, locating ring 19 and 16 wall of steel pipe branch between pass through weld located lateral bar
18 connections are in alignment, then use five reinforcing bars 20 across the locating ring 19 corresponding to two positioning connection structures,
And 20 both ends of reinforcing bar are bent into hook at locating ring 19, upper plugging plate 22 then is welded at 16 both ends of steel pipe, at 16 top of steel pipe
Injected hole is open, concrete mortar 21 is injected into steel pipe 16 by injected hole, while concrete mortar 21 solidifies, under
Several 16 uniform parallels of steel pipe are placed into down by welding upper first axle 5 in 2 lower surface of tablet after concrete mortar 21 solidifies
It is welded as a whole on tablet 2 and by steel pipe 16 and lower 2 upper surface of tablet, then places upper backup pad 3 at 16 top of steel pipe, and will
Steel pipe 16 is welded as a whole with 3 lower surface of upper backup pad；
3）, as shown in Figure 3 and Figure 4, the simple light hydraulic support 23 described in several groups is transported in fully-mechanized mining working gallery
And installed, it is sequentially arranged simple light hydraulic support 23 along the length direction of gallery, and to every group of simple light hydraulic support 23 by suitable
Sequence is numbered：1#, 2#, 3# ... n# make to lead outside two of the coal discharge outlet support adjustment mechanism of each simple light hydraulic support 23
It is contacted to 8 outside of column with the side wall of gallery, starts jacking cylinder 4 and upper backup pad 3 is contacted with top coal layer lower surface and has one
Constant-pressure makes upper backup pad 3 keep good support due to the support reinforcing structure being arranged between lower tablet 2 and upper backup pad 3
Flatness；
4）, according to the coal seam thickness figure of drafting, be more than 6m sections in thickness, first implement it is upper put coal, waste rock board 11 at this time
In the lower part of interior guide post 7 and outer guide post 8,11 upper edge of waste rock board, 2 right side lower surface of lower tablet and two outer guide posts 8
Between form upper coal discharge outlet 24；Caving mode puts coal according to interval, sequence, equivalent, and first putting 1#, 3#, 5#, 7# ..., odd numbers is simple
The top coal of 23 top of light hydraulic support, then put 2#, 4#, 6#, 8# ... the top coal of simple 23 top of light hydraulic support of even numbers, every group is simple
Coal amount of putting at light hydraulic support 23 is 0~3m3Or see cash, i.e. the thickness in coal seam of the thickness more than 6m sections is reduced to and coal seam thickness
After thinner seam consistency of thickness on figure, start lifting drive cylinder 6, lifting drive cylinder 6 drives upwardly through link 14
Waste rock board 11 moves up, and guide groove 12 of the directive wheel 13 on waste rock board 11 in outer guide post 8 moves up, by top
Upper coal discharge outlet 24 blocks, and completion is upper to put coal process；
5）, as shown in Figure 5 and Figure 6, shape between 11 lower edge of waste rock board, 1 right side upper surface of bottom plate and two outer guide posts 8
At lower coal discharge outlet 25, from lower coal discharge outlet 25 using single-wheel, interval, more mouthfuls put coal, since the haulage way of coal seam, successively to return
Wind gallery direction carries out, the top coal on the simple light hydraulic support of odd numbers of first putting 1#, 3#, 5#, 7# ... 23, sees after certain cash under closing
Coal discharge outlet 25 leaves larger back coal；2#, 4#, 6#, 8# is put and lags a distance ... simple 23 top of light hydraulic support of even numbers
Top coal, a spheroid is released in the back coal that will be left behind, completes coal mining activity.
Other accompanying drawings in the present invention in Fig. 3-Fig. 6, which mark, is respectively：The coal seams 26-；27- spoil layers；29- soft coal levels；
It is haulage way 30 close to the tunnel of the simple light hydraulic supports of 1#；It is haulage way 30 close to the tunnel of the simple light hydraulic supports of n#.
The simple light hydraulic support 23 of the present invention due to the support reinforcing structure that is arranged between upper backup pad 3 and lower tablet 2,
Support reinforcing structure uses more steel pipes 16, and 20 concrete structure of reinforcing bar is arranged in steel pipe 16, and steel pipe 16 is mainly used for containing
The high-strength concrete mortar 21 inside simultaneously lock ring is filled, making concrete, pressure has higher compression strength from top to bottom.
After the solidification of high-strength concrete mortar 21 under the axial direction of steel pipe 16 and hoop constraint, compression strength greatly improves.
Reinforcing bar 20 is by passing through locating ring 19 to be arranged in steel pipe 16.The number of the locating ring 19 of each positioning connection structure
Equal to the total number of required reinforcing bar 20.Since reinforcing bar 20 has good tensile strength and ductility.Arrange reinforcing bar 20 in steel
The lower part of pipe 16, the insertion of reinforcing bar 20 are to reduce the rigidity of supporting rack in order to improve the tensile strength of supporting rack, prevent supporting rack
Locally there is tensile shear destruction and brittle break, is improving the stability of holder entirety.The intervention of reinforcing bar 20 can also carry simultaneously
The ductility of high carriage entirety is prevented in high confining pressure lower bracing frame brittle break.The length of locating rod 17 is both less than longitudinally in each
The radius of steel pipe 16, convenient for saving certain Master Cost.
The reinforcing bar 20 in construction of locating ring 19 just can smoothly be inserted into scheduled position in steel pipe 16, preferably play reinforcing bar
20 tensile strength, and the place of the locating ring 19 at 16 both ends of steel pipe is bent into hook, can fully improve holder in this way
Tensile property and stability.
Waste rock board 11 is lifted using hydraulic-driven, and is rolled along guide groove 12 by directive wheel 13, reduces move down in this way
Dynamic resistance.Interior guide post 7 and outer guide post are fixedly connected between 8 upper end by connecting plate 9,7 lower inside of interior guide post with
It is provided with tilt prop 10 between bottom plate 1, can fully improve the stabilization in vertical direction of interior guide post 7 and outer guide post 8 in this way
Property, in addition, due to the bottom plate 1 being arranged in oil cylinder bottom, support strength is promoted, can avoid the larger slotting bottom of cylinder force in this way.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Still can the present invention be modified or be waited
With replacing, without departing from the spirit or scope of the invention, or any substitutions, the power in the present invention should all be covered
In sharp claimed range.
Claims (3)
1. a kind of simple light hydraulic support, it is characterised in that：Including bottom plate, lower tablet, upper backup pad, support reinforcing structure, put coal
Mouthful support adjustment mechanism and more than four jacking cylinders on bottom plate are vertically set on, lower tablet lower surface and jacking cylinder upper end
Between connected by first axle, upper backup pad is arranged in parallel in above lower tablet, and support reinforcing structure setting is in upper backup pad
Between lower tablet；Coal discharge outlet support adjustment mechanism is arranged on bottom plate and on the outside of jacking cylinder；
Coal discharge outlet support adjustment mechanism includes the lower end vertically fixed lifting drive cylinder being located on bottom plate, interior guide post and outer
Guide post, interior guide post and outer guide post are equipped with two, and an interior guide post and an outer guide post are located at the edge of bottom plate
Side, another interior guide post and another outer guide post are located at the edge other side of bottom plate, in interior guide post and outer guide post
It is fixedly connected by connecting plate between end, is provided with tilt prop between interior guide post lower inside and bottom plate, interior guide post and outer
It is provided with waste rock board between guide post, guide groove is vertically equipped on the inside of outer guide post, rotation is equipped with edge on the outside of waste rock board
The directive wheel of rolling in guide groove, lifting drive cylinder are located on the inside of waste rock board, lifting drive cylinder upper end and waste rock board inside
Between connected by link, lift hinged by second hinge between drive cylinder upper end and link inside bottom, connection
It is fixedly connected with waste rock board inner surface on the outside of frame.
2. a kind of simple light hydraulic support according to claim 1, it is characterised in that：Support reinforcing structure includes being arranged in parallel
At least three steel pipes, steel pipe top and upper backup pad lower surface weld, and steel pipe lower part is welded with lower tablet upper surface, every steel
Inside at pipe both ends is respectively provided with there are one positioning connection structure；Each positioning connection structure includes radius rod and transverse direction
Locating rod, radius rod are equipped at least five and arranged in parallel, the lower end of every radius rod with steel pipe lower part
Inner wall is fixedly connected；The upper end of every radius rod is fixedly connected with there are one locating ring, between two neighboring locating ring, two
It is connected by located lateral bar between two locating rings and steel pipe side interior wall of side, all located lateral bars are straight in one
Line arranges that located lateral bar is vertical with radius rod；Pass through correspondence between two positioning connection structures in same root steel pipe
The bar connecting in locating ring is plugged, reinforcing bar is bent into hook at locating ring, and steel pipe both ends are arranged closure plate, are filled in steel pipe
Concrete mortar.
3. using simple light supports caving mining coal-mining method as claimed in claim 2, it is characterised in that：Including following step
Suddenly：
1）, using fully-mechanized mining working gallery deep hole and shallow bore hole, detection of coal seam thickness variation, and draw coal seam thickness figure；
2）, process support reinforcement structure on the ground：The not all isometric levels such as 5 first longitudinal in the welding of steel pipe lower inner wall
The radius rod of distance, the length of locating rod is both less than the radius of steel pipe longitudinally in each, while to ensure that all longitudinal directions are fixed
The line of position bar upper end point-blank, then welds locating ring, finally again adjacent successively in the upper end of radius rod
Between two locating rings, locating ring and steel pipe walls branch between by weld located lateral bar connect it is in alignment, then use
Five reinforcing bars are bent into across the locating ring corresponding to two positioning connection structures, and by reinforcing bar both ends at locating ring
Then hook welds upper plugging plate at steel pipe both ends, opens injected hole in steel pipe top, inject concrete into steel pipe by injected hole
Mortar welds upper first axle while concrete mortar solidifies in lower tablet lower surface, will after concrete mortar solidification
Several steel pipe uniform parallels are placed on lower tablet and steel pipe and lower tablet upper surface are welded as a whole, then in steel pipe top
Upper backup pad is placed in portion, and steel pipe and upper backup pad lower surface are welded as a whole；
3）, the simple light hydraulic support described in several groups transported in fully-mechanized mining working gallery and installed, along the length of gallery
Degree direction is sequentially arranged simple light hydraulic support, and every group of simple light hydraulic support is numbered in order：1#, 2#, 3# ... n#,
Make to contact with the side wall of gallery on the outside of two outer guide posts of the coal discharge outlet support adjustment mechanism of each simple light hydraulic support, start
Upper backup pad is contacted and is had certain pressure by jacking cylinder with top coal layer lower surface, due to being set between lower tablet and upper backup pad
The support reinforcing structure set makes upper backup pad keep good support flatness；
4）, according to the coal seam thickness figure of drafting, be more than 6m section in thickness, first implement it is upper put coal, at this time waste rock board be located in lead
The lower part of the outer guide posts of Xiang Zhuhe forms between waste rock board upper edge, lower tablet right side lower surface and two outer guide posts and puts
Coal mouth；Caving mode puts coal according to interval, sequence, equivalent, above the simple light hydraulic support of odd numbers of first putting 1#, 3#, 5#, 7# ...
Top coal of the top coal, then put 2#, 4#, 6#, 8# ... above the simple light hydraulic support of even numbers puts coal amount at every group of simple light hydraulic support
For 0~3m3Or see cash, i.e. the thickness in coal seam of the thickness more than 6m sections is reduced to and the thinner seam thickness one on the thickness figure of coal seam
After cause, start lifting drive cylinder, lifting drive cylinder is moved up upwardly through link driving waste rock board, on waste rock board
Guide groove of the directive wheel in outer guide post moves up, and the upper coal discharge outlet on top is blocked, and completion is upper to put coal process；
5）, waste rock board lower edge, time coal discharge outlet is formed on the right side of bottom plate between upper surface and two outer guide posts, from lower coal discharge outlet
Put coal using single-wheel, interval, more mouthfuls, since the haulage way of coal seam, successively to tailgate direction carry out, first put 1#, 3#,
Top coal on the simple light hydraulic support of 5#, 7# ... odd numbers closes lower coal discharge outlet after seeing certain cash, leaves larger back coal；It is stagnant
Top coal above a distance puts 2#, 4#, 6#, 8# afterwards ... the simple light hydraulic support of even numbers releases one in the back coal that will be left behind
A spheroid completes coal mining activity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611197831.8A CN106523011B (en) | 2016-12-22 | 2016-12-22 | A kind of simple light hydraulic support and use the holder Sub-Level Caving coal-mining method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611197831.8A CN106523011B (en) | 2016-12-22 | 2016-12-22 | A kind of simple light hydraulic support and use the holder Sub-Level Caving coal-mining method |
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| CN106523011B true CN106523011B (en) | 2018-09-04 |
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| CN108412530B (en) * | 2018-02-05 | 2024-01-30 | 阳泉煤业（集团）有限责任公司 | H-shaped caving coal support upright post pressing plate fixing and moving method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2349350Y (en) * | 1998-06-04 | 1999-11-17 | 煤炭科学研究总院北京开采研究所 | Working face end moving roof hydraulic support |
| CN2454541Y (en) * | 2000-11-10 | 2001-10-17 | 王旭宏 | Top coal support of track type slide top beam |
| RU2231647C1 (en) * | 2002-11-29 | 2004-06-27 | Институт угля и углехимии СО РАН | Section of lining for supporting a breakage face of a steeply inclined coal seam |
| RU2235209C1 (en) * | 2003-01-24 | 2004-08-27 | Открытое акционерное общество "Проектно-конструкторский и экспериментальный институт угольного машиностроения" | Powered support unit |
| CN206220857U (en) * | 2016-11-24 | 2017-06-06 | 西南石油大学 | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock |
| CN206329353U (en) * | 2016-12-22 | 2017-07-14 | 河南工程学院 | A kind of simple light hydraulic support for Sub-Level Caving coal mining activity |
-
2016
- 2016-12-22 CN CN201611197831.8A patent/CN106523011B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349350Y (en) * | 1998-06-04 | 1999-11-17 | 煤炭科学研究总院北京开采研究所 | Working face end moving roof hydraulic support |
| CN2454541Y (en) * | 2000-11-10 | 2001-10-17 | 王旭宏 | Top coal support of track type slide top beam |
| RU2231647C1 (en) * | 2002-11-29 | 2004-06-27 | Институт угля и углехимии СО РАН | Section of lining for supporting a breakage face of a steeply inclined coal seam |
| RU2235209C1 (en) * | 2003-01-24 | 2004-08-27 | Открытое акционерное общество "Проектно-конструкторский и экспериментальный институт угольного машиностроения" | Powered support unit |
| CN206220857U (en) * | 2016-11-24 | 2017-06-06 | 西南石油大学 | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock |
| CN206329353U (en) * | 2016-12-22 | 2017-07-14 | 河南工程学院 | A kind of simple light hydraulic support for Sub-Level Caving coal mining activity |
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| CN106523011A (en) | 2017-03-22 |
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