CN106523011A - Simple light rack and top coal caving method applying rack - Google Patents
Simple light rack and top coal caving method applying rack Download PDFInfo
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- CN106523011A CN106523011A CN201611197831.8A CN201611197831A CN106523011A CN 106523011 A CN106523011 A CN 106523011A CN 201611197831 A CN201611197831 A CN 201611197831A CN 106523011 A CN106523011 A CN 106523011A
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- 239000003245 coal Substances 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005065 mining Methods 0.000 claims abstract description 32
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 76
- 239000010959 steel Substances 0.000 claims description 76
- 230000003014 reinforcing effect Effects 0.000 claims description 41
- 239000010878 waste rock Substances 0.000 claims description 30
- 239000004570 mortar (masonry) Substances 0.000 claims description 16
- 239000004567 concrete Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 230000000694 effects 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
- 230000006378 damage Effects 0.000 abstract description 3
- 230000008844 regulatory mechanism Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 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
- 230000003111 delayed effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 210000003518 stress fiber Anatomy 0.000 description 1
- 230000032258 transport Effects 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
- E21D23/0004—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)
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- Architecture (AREA)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a simple light rack. The rack comprises a base plate, a lower level plate, an upper support plate, a support reinforcement structure and a coal outlet support regulation mechanism. More than four jacking oil tanks are placed vertically on the base plate. The lower surface of the lower level plate is connected with the upper end of the jacking oil tank through a first hinge. The upper support plate is parallelly located above the lower level plate. The support reinforcement structure is located between the upper support plate and the lower level plate. The coal outlet support regulation mechanism is located on the base plate, and at the outer side of the jacking oil tank. The present invention further discloses a top coal caving method applying the rack. The method applies the placement of two coal outlets, namely the upper and lower coal outlets on a rack for the implementation of the top coal caving method. Briefly the method can be named as the one-rack-two-outlet-position top coal caving method. The method can effectively adapt to the mechanical mining of edge minefields and middle and small minefields in a large mine, can effectively adapt to the change of coal layer depth, achieve a high repeatable mining rate, enhance the repeatable mining rate, and can effectively prevent the rack damage and large area roof fall.
Description
Technical field
The invention belongs to safety of coal mines coal-mining technique field, more particularly to a kind of simple light hydraulic support and put using the support
Top coal coal-mining method.
Background technology
At present, in coal enterprise, when in field with "nine squares", coal seam is thicker and top coal is easily broken, for improve production efficiency and coal
Recovery ratio, generally carries out resource exploitation using Sub-Level Caving coal-mining method.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 makes the crushing voerhead coal above support into after a prose style free from parallelism by support rear manually to loosen method（Top）Release, 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 is changed greatly, relatively difficult using large-scale mining, high cost.For 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 on the tail end bottom of simple rack, generally using single-wheel, interval, many mouthfuls
Coal is put, from the beginning of the haulage way of coal seam, is carried out to tailgate direction successively, first put the top on the odd numbers support such as 1#, 3#, 5#
Coal, closes coal discharge outlet after seeing certain cash, leaves larger back coal；A delayed segment distance is put on the even numbers support such as 2#, 4#, 6#
Top coal, releases a spheroid in the back coal that will be left behind.This kind of process for stoping shortcoming：
（1）Poor is adapted to irregular coal seam, coal seam is thicker（More than 6m）When, part top coal can not be put out, causes the rate of extraction low.
（2）When coal seam is thicker, back production is dangerous, and spoil falling speed is fast, and intense impact support, accident are more frequent.
（3）Light-duty simple rack stress is unstable, and the support strength of the gripper shoe of cradle top is relatively low, easily by top coal pressure
It is curved, and less stable, the sinking of support front end is easily caused, afterbody is upwarped, and Jia is difficult for shifting, lengthens working hours, increased
Labor strength.
Thus, it is necessary to provide a kind of modified light-duty one frame twoport Sub-Level Caving coal-mining method of simple rack, on overcoming
State defect.
The content of the invention
In order to solve the weak point in existing pre-stress fibre sheet material stretching end anchoring process, the invention provides a kind of
It is safe and reliable, can be directed to that the coal seam thick more than 6m carries out exploiting, support strength is high, the simple light hydraulic support of good stability and employing
The support Sub-Level Caving coal-mining method.
For achieving the above object, concrete scheme of the invention is as follows：A kind of simple light hydraulic support, including base plate, lower flat board,
Upper backup pad, support reinforcing structure, coal discharge outlet support adjustment mechanism and the jacking cylinder of more than four on base plate is vertically arranged, under
Connected by first axle between flat board lower surface and jacking cylinder upper end, upper backup pad is set in parallel in above lower flat board,
Support reinforcement structure is arranged between upper backup pad and lower flat board；Coal discharge outlet support adjustment mechanism is arranged on base plate and is located at jacking
On the outside of oil cylinder；
Coal discharge outlet support adjustment mechanism includes that vertically the lifting that is located on base plate of fixation drives oil cylinder, interior lead column and outer for lower end
Lead column, interior lead column and outer lead column are equipped with two, and an interior lead column and an outer lead column are positioned at the edge of base plate
The edge opposite side of side, another interior lead column and another outer lead column positioned at base plate, in interior lead column and outer lead column
It is fixedly connected by connecting plate between end, between interior lead column lower inside and base plate, is provided with tilt prop, interior lead column and outer
Waste rock board is provided between lead column, gathering sill on the inside of outer lead column, is vertically provided with, is rotated on the outside of waste rock board and is provided with edge
The directive wheel rolled in gathering sill, lifts and drives oil cylinder to be located on the inside of waste rock board, and lifting is driven on the inside of cylinder upper end and waste rock board
Between connected by link, lifting is driven, and is connected
It is fixedly connected with waste rock board inner surface on the outside of frame.
Support reinforcing structure includes at least three steel pipes be arrangeding in parallel, and steel pipe top is welded with upper backup pad lower surface,
Steel pipe bottom is welded with lower flat board upper surface, and the inside at every steel pipe two ends is provided with a positioning connection structure；Each
Positioning connection structure includes radius rod and located lateral bar, and radius rod is provided with least five and is parallel to each other and sets
Put, 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
A centring ring is connected to, by horizontal stroke between two neighboring centring ring, between two centring rings of both sides and steel pipe side interior wall
Connect to locating rod, all of located lateral bar is arranged in straight line, located lateral bar is vertical with radius rod；Same
By bar connecting of the corresponding inserted in centring ring between two positioning connection structures in steel pipe, reinforcing bar is rolled at centring ring
Hook is curved, steel pipe two ends arrange closure plate, concrete mortar is filled with steel pipe.
Using simple light supports caving mining coal-mining method, comprise the following steps：
1）, using fully-mechanized mining working gallery deep hole and shallow bore hole, detection of coal seam thickness change, and draw coal seam thickness figure；
2）, process support reinforcement structure on the ground：The levels such as not all isometric 5 piece of longitudinal direction are welded in steel pipe lower inner wall first
The radius rod of distance, longitudinally in each the length of locating rod be both less than the radius of steel pipe, while will ensure that all of longitudinal direction is fixed
The line of position bar upper end point-blank, then welds centring ring in the upper end of radius rod, successively finally again adjacent
Connect in alignment by welding located lateral bar between two centring rings, between centring ring and steel pipe walls, be then used by
Centring ring corresponding to five reinforcing bars through two positioning connection structures, and reinforcing bar two ends are bent at centring ring
Hook, then welds upper plugging plate at steel pipe two ends, opens injected hole in steel pipe top, inject concrete by injected hole into steel pipe
Mortar, while concrete mortar solidifies, the first axle in the welding of lower flat board lower surface, after concrete mortar solidification, will
Some steel pipe uniform parallels are placed on lower flat board and steel pipe are welded as a whole with lower flat board upper surface, then in steel pipe top
Upper backup pad is placed in portion, and steel pipe is welded as a whole with upper backup pad lower surface；
3）, the simple light hydraulic support described in some 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 per group of simple light hydraulic support is numbered in order：1#, 2#, 3# ... n#,
Make each simple light hydraulic support coal discharge outlet support adjustment mechanism two outer lead columns on the outside of sidewall contact with gallery, start
Upper backup pad is contacted and is had certain pressure with top coal seam lower surface by jacking cylinder, due to setting between lower flat board and upper backup pad
The support reinforcing structure put, makes upper backup pad keep good support flatness；
4）, according to the coal seam thickness figure drawn, be more than 6m sections in thickness, first implement it is upper put coal, now waste rock board is located at and interior leads
The bottom of the outer lead columns of Xiang Zhuhe, forms between lower surface and two outer lead columns on the right side of waste rock board upper edge, lower flat board and puts
Coal mouth；Caving mode puts coal according to interval, order, equivalent, first puts above the simple light hydraulic support of 1#, 3#, 5#, 7# ... odd numbers
Top coal, the top coal above the simple light hydraulic support of even numbers of then putting 2#, 4#, 6#, 8# ... put coal amount at per group of simple light hydraulic support
For 0～3m3Or see that cash, i.e. thickness are reduced to and the thinner seam thickness one on the thickness figure of coal seam more than the thickness in the coal seam of 6m sections
After cause, start lifting and drive oil cylinder, lifting drives oil cylinder to drive waste rock board to move up upwardly through link, on waste rock board
Directive wheel is moved up along the gathering sill in outer lead column, and the upper coal discharge outlet closure on top completes upper to put coal operation；
5）, waste rock board lower edge, lower coal discharge outlet is formed between upper surface and two outer lead columns on the right side of base plate, from lower coal discharge outlet
Coal is put using single-wheel, interval, many mouthfuls, from the beginning of the haulage way of coal seam, is carried out to tailgate direction successively, first put 1#, 3#,
Top coal on the simple light hydraulic support of 5#, 7# ... odd numbers, closes lower coal discharge outlet, leaves larger back coal after seeing certain cash；It is stagnant
Top coal above latter segment distance puts 2#, 4#, 6#, 8# ... the simple light hydraulic support of even numbers, releases one in the back coal that will be left behind
Individual spheroid, completes coal mining activity.
Using above-mentioned technical proposal, the simple light hydraulic support of the present invention is due to arranging between upper backup pad and lower flat board
Support reinforcing structure, support reinforcing structure adopt many 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, pressure possesses higher pressure resistance from top to bottom to make concrete
Degree.After the solidification of high-strength concrete mortar under the axial direction of steel pipe and hoop constraint, compression strength is greatly improved.
Reinforcing bar is by being arranged in steel pipe through centring ring.The number of the centring ring of each positioning connection structure is equal to required
The total number of the reinforcing bar wanted.As reinforcing bar has good tensile strength and ductility.Reinforcing bar is arranged in the bottom of steel pipe, reinforcing bar
The embedded rigidity for being to reduce for the tensile strength for improving bracing frame bracing frame, prevents bracing frame from tensile shear occur in local
Destruction and brittle break, improve the overall stability of support.The intervention of reinforcing bar simultaneously can also improve the overall ductility of bracing frame, 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, is easy to save certain
Master Cost.
Centring ring reinforcing bar in construction just can smoothly insert position predetermined in steel pipe, preferably play the tension of reinforcing bar
Intensity, and the place of the centring ring at steel pipe two ends is bent into hook, so can fully improve the tensile property of support and steady
It is qualitative.
Waste rock board is lifted using hydraulic-driven, and is rolled along gathering sill by directive wheel, so reduces the resistance for moving up and down
Power.It is fixedly connected by connecting plate between interior lead column and outer lead column upper end, is set between interior lead column lower inside and base plate
Tilt prop is equipped with, the stability in vertical direction of interior lead column and outer lead column so can be fully improved, further, since in oil
The base plate that cylinder bottom portion is arranged, lifts support strength, can so avoid the larger slotting bottom of cylinder force.
In sum, the present invention mines for the thicker section Sub-Level Caving of irregular coal seam, there is provided a kind of safe efficient, operation
The strong support of property and coal-mining method, i.e., upper and the next two coal discharge outlets are arranged on a support carries out Sub-Level Caving coal-mining method
（A referred to as frame dibit Sub-Level Caving coal-mining method）.By methods described when unstable high seam carries out back production, can be effectively
The mechanical mining in the corner field with "nine squares" and medium and small field with "nine squares" of large-scale mine is adapted to, bigger Coal Seam Thickness Change can be effectively adapted to,
The higher rate of extraction is realized, back production efficiency is improved, can effectively prevent support from damaging and large area roof fall.
Description of the drawings
Fig. 1 is the structural representation 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 embodiment
As shown in figures 1 to 6, a kind of simple light hydraulic support of the invention, including base plate 1, lower flat board 2, upper backup pad 3, support
Reinforcement structure, coal discharge outlet support adjustment mechanism and the jacking cylinder 4 of more than four on base plate 1 is vertically arranged, lower 2 lower surface of flat board
It is connected by first axle 5 between 4 upper end of jacking cylinder, upper backup pad 3 is set in parallel in above lower flat board 2, support reinforcing
Structure setting is between upper backup pad 3 and lower flat board 2；Coal discharge outlet support adjustment mechanism is arranged on base plate 1 and is located at jacking oil
On the outside of cylinder 4.
Coal discharge outlet support adjustment mechanism includes that the lower end lifting that vertically fixation is located on base plate 1 drives oil cylinder 6, interior guiding
Post 7 and outer lead column 8, interior lead column 7 and outer lead column 8 are equipped with two, an interior lead column 7 and outer lead column 8
In the edge side of base plate 1, another interior lead column 7 and another outer lead column 8 are located at the edge opposite side of base plate 1, inside lead
To being fixedly connected by connecting plate 9 between 8 upper end of post 7 and outer lead column, arrange between 7 lower inside of interior lead column and base plate 1
There is tilt prop 10, waste rock board 11 is provided between interior lead column 7 and outer lead column 8, is vertically provided with the inside of outer lead column 8
Gathering sill 12, rotates on the outside of waste rock board 11 and is provided with the directive wheel 13 rolled along gathering sill 12, and lifting drives oil cylinder 6 to be located at gear cash
On the inside of plate 11, lifting is connected by link 14 between driving on the inside of cylinder upper end and waste rock board 11, and lifting drives 6 upper end of oil cylinder
It is hinged by second hinge 15 between 14 inside bottom of link, fixes with 11 inner surface of waste rock board on the outside of link 14 and connect
Connect.
Support reinforcing structure includes at least three steel pipes 16 be arrangeding in parallel, 16 top of steel pipe and 3 lower surface of upper backup pad
Welding, 16 bottom of steel pipe are welded with lower 2 upper surface of flat board, and the inside at every 16 two ends of steel pipe is provided with one and is located by connecting
Structure；Each positioning connection structure includes radius rod 17 and located lateral bar 18, and radius rod 17 is provided with 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；Per root, longitudinal direction is fixed
The upper end of position bar 17 has been fixedly connected with a centring ring 19, between two neighboring centring ring 19, two centring rings 19 of both sides
It is connected by located lateral bar 18 between 16 side interior wall of steel pipe, all of located lateral bar 18 is arranged in straight line,
Located lateral bar 18 is vertical with radius rod 17；Inserted by correspondence between two positioning connection structures in same steel pipe 16
The reinforcing bar 20 being set in centring ring 19 connects, and reinforcing bar 20 is bent into hook at centring ring 19, and 16 two ends of steel pipe arrange closure plate 22, steel
Concrete mortar 21 is filled with pipe 16.
The simple light supports caving mining coal-mining method of employing of the present invention, comprises the following steps：
1）, using fully-mechanized mining working gallery deep hole and shallow bore hole, detection of coal seam thickness change, and draw coal seam thickness figure；
2）, process support reinforcement structure on the ground：Water is waited in not all isometric 5 piece for first longitudinal direction being welded in 16 lower inner wall of steel pipe
The radius rod 17 of flat distance, longitudinally in each the length of locating rod 17 be both less than steel pipe 16 radius, while will ensure own
17 upper end of radius rod line point-blank, then weld centring ring successively in the upper end of radius rod 17
19, finally again between two neighboring centring ring 19, between centring ring 19 and 16 wall of steel pipe by welding located lateral bar 18
Connection is in alignment, is then used by the centring ring 19 corresponding to five reinforcing bars 20 through two positioning connection structures, and
20 two ends of reinforcing bar are bent into into hook at centring ring 19, then upper plugging plate 22 are welded at 16 two ends of steel pipe, are opened at the top of steel pipe 16
Injected hole, concrete mortar 21 is injected into steel pipe 16 by injected hole, while concrete mortar 21 solidifies, lower flat
The upper first axle 5 of 2 lower surface of plate welding, after concrete mortar 21 solidifies, some 16 uniform parallels of steel pipe is placed into lower flat
It is welded as a whole with lower 2 upper surface of flat board on plate 2 and by steel pipe 16, then places upper backup pad 3 at the top of the steel pipe 16, and by 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 some groups is transported and is gone forward side by side in fully-mechanized mining working gallery
Row is installed, and is sequentially arranged simple light hydraulic support 23 along the length direction of gallery, and per group of simple light hydraulic support 23 is entered in order
Line number：1#, 2#, 3# ... n#, makes two outer lead columns 8 of the coal discharge outlet support adjustment mechanism of each simple light hydraulic support 23
Outside and the sidewall contact of gallery, start jacking cylinder 4 and contact and have a level pressure upper backup pad 3 with top coal seam lower surface
Power, due to the support reinforcing structure arranged between lower flat board 2 and upper backup pad 3, makes upper backup pad 3 keep good support smooth
Degree；
4）, according to draw coal seam thickness figure, thickness be more than 6m sections, first implement it is upper put coal, now waste rock board 11 be located at it is interior
The bottom of lead column 7 and outer lead column 8, between 11 upper edge of waste rock board, 2 right side lower surface of lower flat board and two outer lead columns 8
Coal discharge outlet 24 in formation；Caving mode puts coal according to interval, order, equivalent, first puts 1#, 3#, 5#, 7# ... odd numbers simply light-duty
Top coal above the simple light hydraulic support of top coal above support 23, then put 2#, 4#, 6#, 8# ... even numbers 23, per group simple light-duty
Coal amount of putting at support 23 is 0～3m3Or see cash, i.e. thickness more than 6m sections coal seam thickness be reduced to on the thickness figure of coal seam
Thinner seam consistency of thickness after, start lifting drive oil cylinder 6, lifting drive oil cylinder 6 upwardly through link 14 drive gear cash
Plate 11 is moved up, and the directive wheel 13 on waste rock board 11 is moved up along the gathering sill 12 in outer lead column 8, will be put on top
Coal mouth 24 is blocked, and completes upper to put coal operation；
5）, as shown in Figure 5 and Figure 6, between 11 lower edge of waste rock board, 1 right side upper surface of base plate and two outer lead columns 8 formed under
Coal discharge outlet 25, puts coal using single-wheel, interval, many mouthfuls from lower coal discharge outlet 25, from the beginning of the haulage way of coal seam, flat to return air successively
Lane direction is carried out, and first puts the top coal on the simple light hydraulic support of 1#, 3#, 5#, 7# ... odd numbers 23, and decentralization coal is closed after seeing certain cash
Mouth 25, leaves larger back coal；Top above the simple light hydraulic support of a delayed segment distance puts 2#, 4#, 6#, 8# ... even numbers 23
Coal, releases a spheroid, completes coal mining activity in the back coal that will be left behind.
Other accompanying drawings mark in the present invention in Fig. 3-Fig. 6 is respectively：26- coal seams；27- spoil layers；29- soft coal levels；
Tunnel close to the simple light hydraulic supports of 1# is haulage way 30；Tunnel close to the simple light hydraulic supports of n# is haulage way 30.
The present invention simple light hydraulic support 23 due to the support reinforcing structure arranged between upper backup pad 3 and lower flat board 2,
Support reinforcing structure adopts many steel pipes 16, and 20 xoncrete structure of reinforcing bar is arranged in steel pipe 16, and steel pipe 16 is mainly used in containing
High-strength concrete mortar 21 inside dress lock ring, pressure possesses higher compression strength from top to bottom to make concrete.
After the solidification of high-strength concrete mortar 21 under the axial direction of steel pipe 16 and hoop constraint, compression strength is greatly improved.
Reinforcing bar 20 is by being arranged in steel pipe 16 through centring ring 19.The number of the centring ring 19 of each positioning connection structure
Equal to the total number of required reinforcing bar 20.As reinforcing bar 20 has good tensile strength and ductility.Arrangement reinforcing bar 20 is in steel
The bottom of pipe 16, the embedded rigidity for being to reduce for the tensile strength for improving bracing frame bracing frame of reinforcing bar 20, prevents bracing frame
There is tensile shear destruction and brittle break in local, improve the overall stability of support.The intervention of reinforcing bar 20 simultaneously can also be carried
The overall ductility of high carriage, prevents 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, is easy to save certain Master Cost.
The reinforcing bar 20 in construction of centring ring 19 just can smoothly insert position predetermined in steel pipe 16, preferably play reinforcing bar
20 tensile strength, and the place of the centring ring 19 at 16 two ends of steel pipe is bent into hook, so can fully improve support
Tensile property and stability.
Waste rock board 11 is lifted using hydraulic-driven, and is rolled along gathering sill 12 by directive wheel 13, is so reduced and is moved down
Dynamic resistance.Interior lead column 7 and outer lead column are fixedly connected by connecting plate 9 between 8 upper end, 7 lower inside of interior lead column with
Tilt prop 10 is provided between base plate 1, the stablizing in vertical direction of interior lead column 7 and outer lead column 8 so can be fully improved
Property, further, since the base plate 1 arranged in oil cylinder bottom, lifts support strength, can so avoid the larger slotting bottom of cylinder force.
Above example is only to illustrative and not limiting technical scheme, although reference above-described embodiment is to this
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, which all should cover the power in the present invention
In the middle of sharp claimed range.
Claims (3)
1. a kind of simple light hydraulic support, it is characterised in that：Including base plate, lower flat board, upper backup pad, support reinforcing structure, put coal
Mouthful support adjustment mechanism and be vertically arranged the jacking cylinder of more than four on base plate, lower flat board lower surface and jacking cylinder upper end it
Between connected by first axle, upper backup pad is set in parallel in above lower flat board, support reinforcing structure setting in upper backup pad and
Between lower flat board；Coal discharge outlet support adjustment mechanism is arranged on base plate and is located on the outside of jacking cylinder；
Coal discharge outlet support adjustment mechanism includes that vertically the lifting that is located on base plate of fixation drives oil cylinder, interior lead column and outer for lower end
Lead column, interior lead column and outer lead column are equipped with two, and an interior lead column and an outer lead column are positioned at the edge of base plate
The edge opposite side of side, another interior lead column and another outer lead column positioned at base plate, in interior lead column and outer lead column
It is fixedly connected by connecting plate between end, between interior lead column lower inside and base plate, is provided with tilt prop, interior lead column and outer
Waste rock board is provided between lead column, gathering sill on the inside of outer lead column, is vertically provided with, is rotated on the outside of waste rock board and is provided with edge
The directive wheel rolled in gathering sill, lifts and drives oil cylinder to be located on the inside of waste rock board, and lifting is driven on the inside of cylinder upper end and waste rock board
Between connected by link, lifting is driven, and is connected
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 be arrangeding in parallel
At least three steel pipes, steel pipe top and upper backup pad lower surface weld, and steel pipe bottom is welded with lower flat board upper surface, every steel
Inside at pipe two ends is provided with a positioning connection structure；Each positioning connection structure is including radius rod and laterally
Locating rod, radius rod are provided with least five and arranged in parallel, the lower end of every radius rod with steel pipe bottom
Inwall is fixedly connected；The upper end of every radius rod has been fixedly connected with a centring ring, between two neighboring centring ring, two
Connected by located lateral bar between two centring rings of side and steel pipe side interior wall, all of located lateral bar is straight in one
Line arranges that located lateral bar is vertical with radius rod；By correspondence between two positioning connection structures in same steel pipe
The bar connecting in centring ring is plugged, reinforcing bar is bent into hook at centring ring, and steel pipe two ends arrange closure plate, are filled with 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 change, and draw coal seam thickness figure；
2）, process support reinforcement structure on the ground：The levels such as not all isometric 5 piece of longitudinal direction are welded in steel pipe lower inner wall first
The radius rod of distance, longitudinally in each the length of locating rod be both less than the radius of steel pipe, while will ensure that all of longitudinal direction is fixed
The line of position bar upper end point-blank, then welds centring ring in the upper end of radius rod, successively finally again adjacent
Connect in alignment by welding located lateral bar between two centring rings, between centring ring and steel pipe walls, be then used by
Centring ring corresponding to five reinforcing bars through two positioning connection structures, and reinforcing bar two ends are bent at centring ring
Hook, then welds upper plugging plate at steel pipe two ends, opens injected hole in steel pipe top, inject concrete by injected hole into steel pipe
Mortar, while concrete mortar solidifies, the first axle in the welding of lower flat board lower surface, after concrete mortar solidification, will
Some steel pipe uniform parallels are placed on lower flat board and steel pipe are welded as a whole with lower flat board upper surface, then in steel pipe top
Upper backup pad is placed in portion, and steel pipe is welded as a whole with upper backup pad lower surface；
3）, the simple light hydraulic support described in some 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 per group of simple light hydraulic support is numbered in order：1#, 2#, 3# ... n#,
Make each simple light hydraulic support coal discharge outlet support adjustment mechanism two outer lead columns on the outside of sidewall contact with gallery, start
Upper backup pad is contacted and is had certain pressure with top coal seam lower surface by jacking cylinder, due to setting between lower flat board and upper backup pad
The support reinforcing structure put, makes upper backup pad keep good support flatness；
4）, according to the coal seam thickness figure drawn, be more than 6m sections in thickness, first implement it is upper put coal, now waste rock board is located at and interior leads
The bottom of the outer lead columns of Xiang Zhuhe, forms between lower surface and two outer lead columns on the right side of waste rock board upper edge, lower flat board and puts
Coal mouth；Caving mode puts coal according to interval, order, equivalent, first puts above the simple light hydraulic support of 1#, 3#, 5#, 7# ... odd numbers
Top coal, the top coal above the simple light hydraulic support of even numbers of then putting 2#, 4#, 6#, 8# ... put coal amount at per group of simple light hydraulic support
For 0～3m3Or see that cash, i.e. thickness are reduced to and the thinner seam thickness one on the thickness figure of coal seam more than the thickness in the coal seam of 6m sections
After cause, start lifting and drive oil cylinder, lifting drives oil cylinder to drive waste rock board to move up upwardly through link, on waste rock board
Directive wheel is moved up along the gathering sill in outer lead column, and the upper coal discharge outlet closure on top completes upper to put coal operation；
5）, waste rock board lower edge, lower coal discharge outlet is formed between upper surface and two outer lead columns on the right side of base plate, from lower coal discharge outlet
Coal is put using single-wheel, interval, many mouthfuls, from the beginning of the haulage way of coal seam, is carried out to tailgate direction successively, first put 1#, 3#,
Top coal on the simple light hydraulic support of 5#, 7# ... odd numbers, closes lower coal discharge outlet, leaves larger back coal after seeing certain cash；It is stagnant
Top coal above latter segment distance puts 2#, 4#, 6#, 8# ... the simple light hydraulic support of even numbers, releases one in the back coal that will be left behind
Individual spheroid, completes coal mining activity.
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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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| 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 CN106523011B (en) | 2018-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412530A (en) * | 2018-02-05 | 2018-08-17 | 阳泉煤业（集团）有限责任公司 | A kind of H-type sublevel caving hydrau lic support column pressing plate fixation shifting frame method |
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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 |
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| 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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Patent Citations (6)
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108412530A (en) * | 2018-02-05 | 2018-08-17 | 阳泉煤业（集团）有限责任公司 | A kind of H-type sublevel caving hydrau lic support column pressing plate fixation shifting frame method |
| 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 | Publication date |
|---|---|
| CN106523011B (en) | 2018-09-04 |
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