CN110617096A - Hydraulic support for separate mining and transportation and filling mining of thin coal seam - Google Patents
Hydraulic support for separate mining and transportation and filling mining of thin coal seam Download PDFInfo
- Publication number
- CN110617096A CN110617096A CN201911030705.7A CN201911030705A CN110617096A CN 110617096 A CN110617096 A CN 110617096A CN 201911030705 A CN201911030705 A CN 201911030705A CN 110617096 A CN110617096 A CN 110617096A
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- Prior art keywords
- mining
- filling
- coal seam
- separate
- thin coal
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- 239000003245 coal Substances 0.000 title claims abstract description 94
- 238000005065 mining Methods 0.000 title claims abstract description 91
- 230000007246 mechanism Effects 0.000 claims description 44
- 239000011435 rock Substances 0.000 abstract description 21
- 238000005406 washing Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000010878 waste rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 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
- 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
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
-
- 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
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
-
- 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
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
-
- 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
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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)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a hydraulic support for separately mining, transporting and filling mining of a thin coal seam, which comprises a base, wherein a top beam is arranged above the base, a plurality of telescopic vertical columns are arranged between the base and the top beam, a supporting plate capable of extending forwards is arranged below the front end of the top beam, and a filling scraper conveyor is arranged behind the top beam. The hydraulic support for separately mining, separately transporting and filling mining of the thin coal seam solves the problem that coal and gangue are separated during mining of the thin coal seam, and simultaneously solves the problem that the support cannot support a rock stratum above the coal seam through lowering the support during separate mining and separately transporting.
Description
Technical Field
The invention belongs to the technical field of coal mine filling mining hydraulic supports, and particularly relates to a thin coal seam separate mining and separate transportation filling mining hydraulic support.
Background
The thin coal seam is the coal seam with the thickness of less than 1.3 meters, the storage capacity of the thin coal seam coal mine in China is relatively rich, and according to investigation, the storage capacity of the thin coal seam coal mine in China is about 670 hundred million tons. Along with the increase of mining strength of medium and thick coal seams, coal mine resources are less and less, and the thin coal seams have wide mining prospects, but are not high in development and utilization degree, mainly because the mining technology of the thin coal seams has higher requirements and is relatively complex in environment compared with the medium and thick coal seams.
Because the thin coal seam is thin, the mining space is too narrow, various mining equipment and installation and maintenance equipment are difficult to erect, and the working space of workers is also narrow. Although most working faces are provided with fully-mechanized mining hydraulic supports, the height of the working faces is too low, so that the minimum mining height of the fully-mechanized mining hydraulic supports is met, a coal mining machine often needs to break the top or the bottom when cutting coal, a large amount of gangue is mixed in the coal which is mined back, the coal quality is influenced, large pressure is caused for ground washing, the washing cost is greatly increased, a large amount of gangue needs to be discharged outwards, the occupied area of the gangue is large, and the environment is polluted.
In order to improve the coal quality of the thin coal seam coal mining, reduce the washing cost and realize zero discharge of gangue, the coal seam and the broken top rock on the working face are respectively mined and transported (coal gangue separate mining and separate transportation for short), the mined coal is transported out by a working face scraper conveyor and a working face crossheading conveyor, and the mined gangue is transferred to a goaf behind a working face support for filling by the working face scraper conveyor. By the method, the content of the waste rock in the coal is greatly reduced, the coal quality is obviously improved, the coal washing cost is reduced, the waste rock is not discharged outwards, and green filling mining of the thin coal seam is realized. However, one difficulty of this method is that when the working face is divided into mining and transportation modes, coal is first mined and then top-broken to cut gangue, in order to ensure that the gangue above the coal seam does not fall down and mix into the mined coal during the coal mining process, the rock layer above the coal seam needs to be supported in time after the coal mining machine cuts the coal. However, because the height of the hydraulic support of the working face is limited and roof breaking is necessary, the support cannot be lowered to support the rock stratum above the coal bed after the coal cutter cuts coal.
Disclosure of Invention
The invention aims to provide a hydraulic support for separate mining and separate transportation and filling mining of a thin coal seam, and solves the problem that the support cannot support a rock stratum above the coal seam through a descending frame when the thin coal seam is separately mined and transported.
In order to achieve the purpose, the invention adopts the technical scheme that the hydraulic support for separately mining, separately transporting, separately filling and mining the thin coal seam comprises a base, a top beam is arranged above the base, a plurality of telescopic vertical columns are arranged between the base and the top beam, a supporting plate capable of extending forwards is arranged below the front end of the top beam, and a filling scraper conveyor is arranged behind the top beam.
The technical proposal of the invention also has the following characteristics,
the top beam is provided with a driving mechanism, and the driving end of the driving mechanism is connected with the supporting plate.
The driving mechanism comprises a connecting rod mechanism, the connecting rod mechanism is hinged to the lower portion of the front end of the top beam, the supporting plate is hinged to the connecting rod mechanism, and the telescopic end of the driving mechanism is hinged to the connecting rod mechanism.
The connecting rod mechanism comprises four connecting rods which are arranged in parallel, the four connecting rods are distributed in two pairs in a front-back mode, the upper end of each connecting rod is hinged to the lower side of the top beam, and the lower end of each connecting rod is hinged to the supporting plate.
Each pair of connecting rods is respectively hinged on two sides of the supporting plate.
The driving mechanism comprises two hydraulic cylinders, wherein the telescopic end of one hydraulic cylinder is hinged with one of any pair of connecting rods; the telescopic end of the other hydraulic cylinder is hinged with the other connecting rod of the pair of connecting rods.
And a working platform is arranged on the base at the rear end of the top beam, and the filling scraper conveyor is arranged on the working platform.
The invention has the beneficial effects that: (1) according to the hydraulic support for separately mining, transporting, filling and mining the thin coal seam, the coal seam and the roof rock can be mined respectively, the gangue content in coal mining is greatly reduced, and the coal washing pressure and washing cost are reduced; (2) according to the hydraulic support for separately mining, transporting, filling and mining the thin coal seam, the separation of the coal seam and the top rock stratum is realized by the aid of the liftable and telescopic supporting plate arranged in front of the top beam, the overlying rock stratum of the top plate is supported, and normal production of separately mining, transporting and mining of the working face of the thin coal seam is guaranteed; (3) the thin coal seam separate mining and separate transporting and filling mining hydraulic support is used as basic equipment, and waste rocks generated during separate mining of a working face can be transferred to a filling scraper conveyor arranged on a platform at the rear part of the hydraulic support through a transfer conveyor arranged on the working face, so that subsequent filling mining is performed, and the waste rocks on the working face are not lifted to a well and are exploited in an environment-friendly mode.
Drawings
FIG. 1 is a schematic structural diagram of a thin coal seam separate mining and separate transportation filling mining hydraulic support in the coal seam mining process;
FIG. 2 is a schematic structural diagram of a thin coal seam separate mining and separate transportation filling mining hydraulic support in rock stratum mining according to the invention;
FIG. 3 is a schematic diagram of the coal mining operation of the coal mining face of FIG. 1;
FIG. 4 is a schematic diagram of the operation of FIG. 2 in rock formation mining at a working face of a coal mine.
In the figure: 1. the coal mining machine comprises a base, 2 telescopic columns, 3 driving mechanisms, 4 connecting rod mechanisms, 5 supporting plates, 6 top beams, 7 roof strata, 8 coal beds, 9 coal mining machines, 10 scraper conveyors, 11 working platforms and 12 filling scraper conveyors.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1, the hydraulic support for separately mining, separately transporting, separately filling and mining of a thin coal seam comprises a base 1, a top beam 6 is arranged above the base 1, a plurality of telescopic vertical columns 2 are arranged between the base 1 and the top beam 6, a supporting plate 5 capable of extending forwards is arranged below the front end of the top beam 6, and a filling scraper conveyor 12 is arranged behind the top beam 6.
With reference to fig. 2, in the hydraulic support for separate mining, separate transportation, filling and mining of a thin coal seam according to the present invention, a driving mechanism 3 is disposed on a top beam 6, and a driving end of the driving mechanism 3 is connected to a support plate 5; the driving mechanism 3 comprises a connecting rod mechanism 4, the connecting rod mechanism 4 is hinged below the front end of the top beam 6, the supporting plate 5 is hinged on the connecting rod mechanism 4, and the telescopic end of the driving mechanism 3 is hinged with the connecting rod mechanism 4.
In the hydraulic support for separately mining, transporting, filling and mining the thin coal seam, the telescopic end of the driving mechanism 3 extends out, the connecting rod mechanism 4 drives the supporting plate 5 to move towards the front lower part of the top beam 6 until the supporting plate 5 is positioned at the preset position below the front side of the top beam 6, and at the moment, a worker can operate the coal mining machine 9 to mine the thin coal seam 8. As shown in fig. 3, when the thin coal seam 8 is mined, the supporting plate 5 is supported below the roof rock layer 7 to support the roof rock layer 7 in time, so that gangue on the roof rock layer 7 can be prevented from falling into a mined coal mine, the front end of the top beam 6 is supported on the periphery of the roof rock layer 7, and the whole top beam 6 does not need to be subjected to corresponding lifting operation by adjusting a telescopic upright column.
As shown in fig. 4, when the coal mining machine 9 returns, it should be ensured that all the mined coal is transported out by the scraper conveyor 10, then the telescopic end of the driving mechanism 3 is recovered, the connecting rod mechanism 4 drives the supporting plate 5 to move towards the rear upper part of the top beam 6 until the supporting plate 5 is completely positioned below the top beam 6, at this time, a worker can operate the coal mining machine 9 to mine the roof rock stratum 7, the gangue generated by mining the roof rock stratum 7 is transferred to the filling scraper conveyor 10 arranged on the rear platform of the hydraulic support through a transfer machine arranged at the end of the working face, and subsequent filling mining is performed, so that the gangue on the working face is not lifted into the well and is not mined in a green manner.
Obviously, the thin coal seam separate mining and separate transportation filling mining hydraulic support can realize separate mining of coal seams and roof rocks, greatly reduces the gangue content of coal mining, and reduces the coal washing pressure and washing cost; the separation of the thin coal seam 8 and the roof rock layer 7 is realized by utilizing the lifting and telescopic supporting plate 5 arranged in front of the top beam 6, and the roof rock layer 7 is supported, so that the normal production of the mining and separate transportation of the working face of the thin coal seam 8 is ensured.
In the hydraulic prop for thin coal seam separate mining and separate transportation, filling and mining according to the present invention, as shown in fig. 1, the link mechanism 4 is preferably composed of four links arranged in parallel, the four links are arranged in two pairs in a front-to-back manner, the upper end of each link is hinged to the lower side of the top beam 6, and the lower end is hinged to the support plate 5. The telescopic end of the driving mechanism 3 extends out, and the connecting rod mechanism 4 drives the supporting plate 5 to move towards the front lower part of the top beam 6; the telescopic end of the driving mechanism 3 is retracted, and the connecting rod mechanism 4 drives the supporting plate 5 to move towards the back upper part of the top beam 6.
In the hydraulic support for thin coal seam separate mining, separate transportation, filling and mining according to the present invention, as shown in fig. 1, each pair of connecting rods are hinged to both sides of the supporting plate 5, respectively, and the stability of the hinge of the supporting plate 5 in the connecting rod mechanism 4 can be enhanced by symmetrical hinge.
In the hydraulic prop for thin coal seam separate mining and separate transportation, filling and mining according to the present invention, as shown in fig. 1, the driving mechanism 3 is preferably formed by two hydraulic cylinders, wherein the telescopic end of one of the hydraulic cylinders is hinged to one of the pair of front-most connecting rods; the telescopic end of the other hydraulic cylinder is hinged with the other of the pair of connecting rods, and the telescopic ends of the two hydraulic cylinders simultaneously extend and retract to correspondingly drive the connecting rod mechanism 4 up and down.
As shown in fig. 1, in the hydraulic support for thin coal seam separate mining, separate transportation, filling and mining of the invention, the support plate is hinged in the link mechanism 4, so that the design and installation space of the four-link mechanism 4 is reduced to adapt to the limited space environment of the thin coal seam.
Claims (7)
1. The utility model provides a thin coal seam divides to adopt and divides fortune filling mining hydraulic support, includes base (1), has back timber (6) above base (1), is provided with a plurality of scalable stands (2) between base (1) and back timber (6), its characterized in that, the front end below of back timber (6) is provided with backup pad (5) that can reach forward, back timber (6) rear is provided with filling scraper conveyor (12).
2. The hydraulic support for separate mining, separate transportation, filling and mining of the thin coal seam according to claim 1, characterized in that a driving mechanism (3) is arranged on the top beam (6), and the driving end of the driving mechanism (3) is connected with a supporting plate (5).
3. The hydraulic support for separate mining, separate transportation, filling and mining of the thin coal seam according to claim 1, characterized in that the driving mechanism (3) comprises a link mechanism (4), the link mechanism (4) is hinged below the front end of the top beam (6), the support plate (5) is hinged to the link mechanism (4), and the telescopic end of the driving mechanism (3) is hinged to the link mechanism (4).
4. The hydraulic support for thin coal seam separate mining, separate transportation, filling and mining according to claim 2, characterized in that the link mechanism (4) comprises four links arranged in parallel, and the four links are arranged in two pairs in front of each other, and the upper end of each link is hinged to the lower side of the top beam (6) and the lower end is hinged to the support plate (5).
5. The hydraulic support for thin coal seam separate mining and separate transportation and filling mining according to claim 4, wherein each pair of connecting rods are respectively hinged on two sides of the supporting plate (5).
6. The hydraulic support for thin coal seam separate mining and separate transportation and filling mining according to claim 5, characterized in that the driving mechanism (3) comprises two hydraulic cylinders, wherein the telescopic end of one hydraulic cylinder is hinged with one of any pair of connecting rods; the telescopic end of the other hydraulic cylinder is hinged with the other connecting rod of the pair of connecting rods.
7. The hydraulic support for thin coal seam separate mining and separate transportation and filling mining according to claim 1, characterized in that a working platform (11) is arranged on the base (1) at the rear end of the top beam (6), and the filling scraper conveyor (12) is arranged on the working platform (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030705.7A CN110617096A (en) | 2019-10-28 | 2019-10-28 | Hydraulic support for separate mining and transportation and filling mining of thin coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030705.7A CN110617096A (en) | 2019-10-28 | 2019-10-28 | Hydraulic support for separate mining and transportation and filling mining of thin coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110617096A true CN110617096A (en) | 2019-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911030705.7A Pending CN110617096A (en) | 2019-10-28 | 2019-10-28 | Hydraulic support for separate mining and transportation and filling mining of thin coal seam |
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| CN (1) | CN110617096A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586141A (en) * | 2021-08-17 | 2021-11-02 | 西安绿色矿业研究院有限公司 | Filling scraper conveyor supporting device for filling mining support |
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|---|---|---|---|---|
| CN101892856A (en) * | 2010-07-03 | 2010-11-24 | 霍州煤电集团有限责任公司 | Special hydraulic support for underground filling coal mining of coal mine |
| CN101943016A (en) * | 2010-08-17 | 2011-01-12 | 天地科技股份有限公司 | Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed |
| CN202467880U (en) * | 2011-11-28 | 2012-10-03 | 袁伟昊 | Thin seam blast mining solid waste filling hydraulic support |
| CN202991067U (en) * | 2012-09-29 | 2013-06-12 | 山东新煤机械装备股份有限公司 | In-coal gangue drawing hydraulic support |
| CN205778971U (en) * | 2016-05-24 | 2016-12-07 | 中国神华能源股份有限公司 | Hydraulic support for bashing |
| CN211008704U (en) * | 2019-10-28 | 2020-07-14 | 陕西蓝山重工科技有限公司 | Hydraulic support for separate mining and separate transportation and filling mining of thin coal seam |
-
2019
- 2019-10-28 CN CN201911030705.7A patent/CN110617096A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892856A (en) * | 2010-07-03 | 2010-11-24 | 霍州煤电集团有限责任公司 | Special hydraulic support for underground filling coal mining of coal mine |
| CN101943016A (en) * | 2010-08-17 | 2011-01-12 | 天地科技股份有限公司 | Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed |
| CN202467880U (en) * | 2011-11-28 | 2012-10-03 | 袁伟昊 | Thin seam blast mining solid waste filling hydraulic support |
| CN202991067U (en) * | 2012-09-29 | 2013-06-12 | 山东新煤机械装备股份有限公司 | In-coal gangue drawing hydraulic support |
| CN205778971U (en) * | 2016-05-24 | 2016-12-07 | 中国神华能源股份有限公司 | Hydraulic support for bashing |
| CN211008704U (en) * | 2019-10-28 | 2020-07-14 | 陕西蓝山重工科技有限公司 | Hydraulic support for separate mining and separate transportation and filling mining of thin coal seam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586141A (en) * | 2021-08-17 | 2021-11-02 | 西安绿色矿业研究院有限公司 | Filling scraper conveyor supporting device for filling mining support |
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