CN113586116A - Coal mine solid filling mining hydraulic support - Google Patents
Coal mine solid filling mining hydraulic support Download PDFInfo
- Publication number
- CN113586116A CN113586116A CN202110942124.1A CN202110942124A CN113586116A CN 113586116 A CN113586116 A CN 113586116A CN 202110942124 A CN202110942124 A CN 202110942124A CN 113586116 A CN113586116 A CN 113586116A
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- Prior art keywords
- filling
- top beam
- hydraulic support
- coal mine
- base
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- 238000005065 mining Methods 0.000 title claims abstract description 52
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 239000007787 solid Substances 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 description 4
- 239000010878 waste rock Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- -1 gangue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- 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
- E21D23/04—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
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
-
- 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
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
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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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a coal mine solid filling mining hydraulic support which comprises a base, wherein a front top beam and a rear top beam are arranged on the base, the rear end of the front top beam is hinged with the front end of the rear top beam, the base is connected with the front top beam and the rear top beam through an upright post and a four-bar linkage mechanism, and a first driving mechanism is arranged between the front top beam and the four-bar linkage mechanism; the rear part of the base is connected with a lifting gangue filling and discharging supporting mechanism. The coal mine solid filling mining hydraulic support solves the problems that in the prior art, a suspension type filling scraper conveyor of a filling mining support is difficult to realize coal mining and filling parallel operation and adapt to filling mining with a large working face length, and the suspension type filling scraper conveyor has poor stability, low filling efficiency and low filling capacity.
Description
Technical Field
The invention belongs to the technical field of coal mine filling mining supporting equipment, and particularly relates to a coal mine solid filling mining hydraulic support.
Background
At present, solid wastes such as gangue, coal slime and fly ash generated in the coal mining, washing and power generation processes and waste residues generated in coal chemical production in China are generally stacked on the ground, the solid wastes occupy land and pollute the environment, and the filling coal mining method for disposing the gangue in a working face goaf can reduce the discharge of the solid wastes of a coal mine, reduce mining subsidence disasters and improve the recovery rate of mine resources, and is one of key technical approaches for realizing green mining of the coal mine. The gangue filling mining becomes a new coal mining technology, but at present, the conventional gangue filling mining in China mostly adopts a filling mining hydraulic support to hang a porous bottom-discharge type filling scraper conveyor (hereinafter, the porous bottom-discharge type filling scraper conveyor is referred to as a filling scraper conveyor for short) for filling so as to achieve fixed production, and the coal mining yield is influenced. The annual output of a conventional waste filling working face is 50-60 ten thousand tons/year, and for modern large mines and mines with high annual output of waste rocks, due to the fact that filling supports and filling scraper conveyor equipment are affected, requirements are difficult to meet, and a hydraulic support capable of quickly and efficiently filling waste rocks needs to be developed.
In the existing general dry filling mining technology, a working face mostly adopts a four-column or six-column supporting shield type filling mining hydraulic support to hang a multi-hole bottom discharge type filling scraper conveyor or a support with a similar structure for filling mining, and the support has the following problems: (1) the filling supports of the type are mostly suspended with light filling scraper conveyors under rear top beams, when the coal mining on a working face moves the supports, the filling scraper conveyors lift and move forwards along with the top beams, and at the moment, filling is difficult to perform, namely parallel operation of coal mining and filling is difficult to realize, so that the working face has the disadvantages of low propelling speed, low yield and incapability of realizing high-yield and high-efficiency filling mining; (2) at present, the rear top beam of the filling support can only suspend a light filling scraper conveyor, the filling scraper conveyor is short in length, generally less than 150m, and small in capacity of transporting filling materials, so that the waste rock filling capacity is small, generally less than 100 ten thousand tons per year, and the filling support cannot adapt to filling mining with a long working face width (such as the working face width is more than 200 m); (3) the back timber of filling the support hangs filling scraper conveyor through the chain link, changes at any time because of working face roof shape and mine pressure, makes support back timber stress state change at any time to lead to hanging scraper conveyor's chain link to relax differently, the atress is uneven, makes filling scraper conveyor be difficult to guarantee straight, the appearance twists reverse and incline, will produce great the torsion during the operation, jamming and chain breakage appear easily, cause scraper conveyor length limited, therefore can't realize the scale and fill the exploitation.
Disclosure of Invention
The invention aims to provide a coal mine solid filling mining hydraulic support, which solves the problems that in the prior art, a suspension type filling scraper conveyer of a filling mining support is difficult to realize parallel operation of coal mining and filling, is difficult to adapt to filling mining with a longer working face width, and has poor stability, low filling efficiency and low filling capacity.
In order to achieve the purpose, the invention adopts the technical scheme that: a coal mine solid filling mining hydraulic support comprises a base, wherein a front top beam and a rear top beam are arranged on the base, the rear end of the front top beam is hinged with the front end of the rear top beam, the base is connected with the front top beam and the rear top beam through an upright post and a four-bar mechanism, and a first driving mechanism is arranged between the front top beam and the four-bar mechanism; the rear part of the base is connected with a lifting gangue filling and discharging supporting mechanism.
As a preferable technical scheme of the invention, the waste rock filling and discharging support mechanism comprises a support base, a lower box body is arranged on the upper side of the support base, an upper box body is sleeved on the lower box body, a workbench is arranged on the upper side of the upper box body, a second driving mechanism is arranged on the lower box body, the driving end of the second driving mechanism is connected with the workbench, and a blanking port is arranged on the workbench.
As a preferable technical scheme of the invention, a front baffle is arranged on the front side of the workbench, and a rear baffle is arranged on the rear side of the workbench.
As a preferred technical scheme of the present invention, a telescopic beam is disposed at a front end of the front top beam, a hinged side guard is disposed on the telescopic beam, a third driving mechanism is disposed between the front top beam and the telescopic beam, and a fourth driving mechanism is disposed on the telescopic beam and the side guard.
As a preferable technical scheme of the invention, an inclined strut is arranged between the workbench and the box body.
The invention has the beneficial effects that: (1) according to the coal mine solid filling mining hydraulic support, the filling scraper conveyor is arranged on the filling gangue discharge supporting mechanism, the support lifting frame and the moving frame are not affected with the filling scraper conveyor, the filling scraper conveyor can move back and forth on the workbench, coal mining and filling parallel operation is realized, meanwhile, a heavy scraper conveyor can be adopted, the transportation capacity is high, the filling capacity is high, and the requirement of large-scale filling mining of a large-scale modern mine is met; (2) the working platform of the hydraulic support for solid filling mining of the coal mine adopts a T-shaped structure (the T-shaped structure is formed by the working platform, the upper box body and the lower box body), and the filling scraper conveyor moves horizontally on the T-shaped working platform, so that the occupied space of the scraper conveyor is effectively shortened, the length of a top beam of the support is reduced, the strength of the support is effectively improved under the same pressure condition, and the support is more favorable for transportation, installation and retraction; (3) the hydraulic support for solid filling mining of the coal mine is formed by hinging the front top beam and the rear top beam, the front top beam and the rear top beam are relatively short, the production, the processing and the manufacturing are relatively easy, the strength of a structural part is ensured, the adaptability is better, and the transportation, the installation and the withdrawal sizes of the support can be further reduced; (4) according to the coal mine solid filling mining hydraulic support, the rear part of the rear top beam is in bending transition, so that the top plate is cut, and the pressure of the top plate of the goaf on the support is reduced; (5) according to the coal mine solid filling mining hydraulic support, the bottom of the filling gangue-releasing supporting mechanism is hinged with the support, so that the support can better adapt to the fluctuation of a working face bottom plate, and the influence on a filling scraper conveyor is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of a coal mine solid fill mining hydraulic support of the present invention;
fig. 2 is a top view of a coal mine solid fill mining hydraulic support of the present invention.
In the figure: 1. the device comprises a rear top beam, 2 parts of a front top beam, 3 parts of a telescopic beam, 4 parts of a fourth driving mechanism, 5 parts of an upper side protection plate, 6 parts of a third driving mechanism, 7 parts of an upright post, 8 parts of a base, 9 parts of a four-bar mechanism, 10 parts of a front baffle, 11 parts of an upper box body, 12 parts of a second driving mechanism, 13 parts of a front baffle, 14 parts of a filling scraper conveyor, 15 parts of a rear baffle, 16 parts of a fifth driving mechanism, 17 parts of a first driving mechanism, 18 parts of a supporting base, 19 parts of a blanking port, 20 parts of an inclined strut and 21 parts of a lower box body.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1, the hydraulic support for coal mine solid filling mining of the present invention comprises a base 8, wherein a front top beam 2 and a rear top beam 1 are arranged on the base 8, the rear end of the front top beam 2 is hinged with the front end of the rear top beam 1, the base 8 is connected with the front top beam 2 and the rear top beam 1 through an upright post 7 and a four-bar mechanism 9, and a first driving mechanism 17 is arranged between the front top beam 2 and the four-bar mechanism 9; the rear part of the base 8 is connected with a lifting gangue filling and discharging supporting mechanism.
During filling mining, the front scraper conveyor of the working face carries coal, and the filling scraper conveyor 14 carries gangue. The coal mining machine cuts coal, moves the frame, pushes the front scraper conveyor, and simultaneously the filling scraper conveyor 14 arranged on the workbench 13 runs to fill filling waste rock into the goaf through a waste rock discharge port on a middle groove of the filling scraper conveyor 14 and a blanking port 19 on the workbench 13. Because the filling and gangue-discharging supporting mechanism is relatively independent from the top beams (the front top beam and the rear top beam) of the bracket and is not influenced by the descending and moving of the top beam of the bracket, the gangue discharge and filling of the filling scraper conveyor are not influenced by the descending and moving of the bracket, and the parallel operation of coal mining and filling is realized.
Referring to fig. 2, in the coal mine solid filling mining hydraulic support, the gangue filling and discharging support mechanism comprises a support base 18, a lower box body 21 is arranged on the upper side of the support base 18, an upper box body 11 is sleeved on the lower box body 21, a workbench 13 is arranged on the upper side of the upper box body 11, a second driving mechanism 12 is arranged on the lower box body, the driving end of the second driving mechanism 12 is connected with the workbench 13, and a blanking port 19 is arranged on the workbench 13.
The filling scraper conveyor 14 is arranged on the workbench 13, the workbench 13 and the upper and lower box bodies form a T-shaped structure, the structure is stable, the length of a top beam of the support can be further compressed, and the support supporting strength is improved. The second driving mechanism 12 can realize the lifting of the workbench, can adapt to the change of different filling heights, can ensure that the filling scraper conveyor is in a straight state on the workbench 13 by adjusting the height of the workbench, and can ensure that the front and back positions of the filling scraper conveyor on the workbench can carry out gangue discharge operation by the blanking port 19 on the workbench 13. The table 13 is provided with a fifth drive mechanism 16, and the fifth drive mechanism 16 is used to drive the filling shoe conveyor 14 to move back and forth on the table 13.
In the hydraulic support for solid filling and mining in coal mines according to the invention, as shown in fig. 1, a front baffle 10 is provided on the front side of a working platform 13, and a rear baffle 15 is provided on the rear side of the working platform 13.
The front baffle and the rear baffle can limit the filling scraper conveyor 14 to prevent the filling scraper conveyor 14 from being separated from the workbench 13, and the box body 11 can be used as a bearing structure of the gangue filling and discharging workbench 13 and a gangue blocking device to block filling gangue from entering the support and effectively isolate and fill a goaf.
As shown in fig. 1, in the hydraulic support for solid filling and mining in coal mines according to the present invention, a telescopic beam 3 is disposed at the front end of a front top beam 2, a hinged side guard 5 is disposed on the telescopic beam 3, a third driving mechanism 6 is disposed between the front top beam 2 and the telescopic beam 3, and a fourth driving mechanism 4 is disposed on the telescopic beam 3 and the side guard 5.
The telescopic beam 3 can temporarily support the top plate of the working face to prevent the top plate gangue from falling, and the side protection plate 5 can temporarily support the coal wall to prevent the coal wall from being broken.
In the coal mine solid filling mining hydraulic support, the inclined strut 20 is arranged between the workbench 13 and the upper box body 11, and the inclined strut 20 can further improve the stability of the workbench.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The hydraulic support for coal mine solid filling mining is characterized by comprising a base (8), wherein a front top beam (2) and a rear top beam (1) are arranged on the base (8), the rear end of the front top beam (2) is hinged with the front end of the rear top beam (1), the base (8) is connected with the front top beam (2) and the rear top beam (1) through an upright post (7) and a four-bar mechanism (9), and a first driving mechanism (17) is arranged between the front top beam (2) and the four-bar mechanism (9); the rear part of the base (8) is connected with a lifting gangue filling and discharging supporting mechanism.
2. The coal mine solid filling mining hydraulic support according to claim 1, characterized in that the filling and gangue discharging supporting mechanism comprises a supporting base (18), a lower box body (21) is arranged on the upper side of the supporting base (18), an upper box body (11) is sleeved on the lower box body (21), a workbench (13) is arranged on the upper side of the upper box body (11), a second driving mechanism (12) is arranged on the lower box body, the driving end of the second driving mechanism (12) is connected with the workbench (13), and a blanking port (19) is arranged on the workbench (13).
3. The hydraulic support for coal mine solid filling mining according to claim 2, characterized in that a front baffle (10) is arranged at the front side of the working platform (13), and a rear baffle (15) is arranged at the rear side of the working platform (13).
4. The coal mine solid filling mining hydraulic support according to claim 1, characterized in that a telescopic beam (3) is arranged at the front end of the front top beam (2), a hinged side protection plate (5) is arranged on the telescopic beam (3), a third driving mechanism (6) is arranged between the front top beam (2) and the telescopic beam (3), and a fourth driving mechanism (4) is arranged on the telescopic beam (3) and the side protection plate (5).
5. The hydraulic support for coal mine solid filling mining according to claim 2, characterized in that a diagonal brace (20) is arranged between the working platform (13) and the upper box body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110942124.1A CN113586116A (en) | 2021-08-17 | 2021-08-17 | Coal mine solid filling mining hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110942124.1A CN113586116A (en) | 2021-08-17 | 2021-08-17 | Coal mine solid filling mining hydraulic support |
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| Publication Number | Publication Date |
|---|---|
| CN113586116A true CN113586116A (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110942124.1A Pending CN113586116A (en) | 2021-08-17 | 2021-08-17 | Coal mine solid filling mining hydraulic support |
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| CN (1) | CN113586116A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586118A (en) * | 2021-08-17 | 2021-11-02 | 西安绿色矿业研究院有限公司 | Colliery solid waste fills hydraulic support |
| CN114233359A (en) * | 2022-01-24 | 2022-03-25 | 中煤能源研究院有限责任公司 | Caving type gangue filling hydraulic support and filling method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562112A (en) * | 2012-03-07 | 2012-07-11 | 郑州四维机电设备制造有限公司 | Four-column suspension swinging beam type gangue filling hydraulic support |
| CN203905987U (en) * | 2014-03-06 | 2014-10-29 | 卡特彼勒（郑州）有限公司 | Backfill hydraulic bracket |
| CN105065049A (en) * | 2015-08-26 | 2015-11-18 | 冀中能源股份有限公司邢东矿 | Hydraulic support for high-water cut and fill mining |
| CN105178998A (en) * | 2015-09-18 | 2015-12-23 | 冀中能源股份有限公司邢东矿 | Hydraulic support for waste rock filling |
| CN105221185A (en) * | 2015-08-26 | 2016-01-06 | 冀中能源股份有限公司邢东矿 | A kind of coal winning technology |
| CN109944624A (en) * | 2019-05-05 | 2019-06-28 | 陕西蓝山重工科技有限公司 | Coal mine solid waste fills hydraulic support |
| CN111485929A (en) * | 2020-05-19 | 2020-08-04 | 中煤能源研究院有限责任公司 | Fully-mechanized coal mining gangue-throwing filling hydraulic support and filling method thereof |
| CN215444108U (en) * | 2021-08-17 | 2022-01-07 | 西安绿色矿业研究院有限公司 | Hydraulic support for solid filling and mining of coal mine |
-
2021
- 2021-08-17 CN CN202110942124.1A patent/CN113586116A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562112A (en) * | 2012-03-07 | 2012-07-11 | 郑州四维机电设备制造有限公司 | Four-column suspension swinging beam type gangue filling hydraulic support |
| CN203905987U (en) * | 2014-03-06 | 2014-10-29 | 卡特彼勒（郑州）有限公司 | Backfill hydraulic bracket |
| CN105065049A (en) * | 2015-08-26 | 2015-11-18 | 冀中能源股份有限公司邢东矿 | Hydraulic support for high-water cut and fill mining |
| CN105221185A (en) * | 2015-08-26 | 2016-01-06 | 冀中能源股份有限公司邢东矿 | A kind of coal winning technology |
| CN105178998A (en) * | 2015-09-18 | 2015-12-23 | 冀中能源股份有限公司邢东矿 | Hydraulic support for waste rock filling |
| CN109944624A (en) * | 2019-05-05 | 2019-06-28 | 陕西蓝山重工科技有限公司 | Coal mine solid waste fills hydraulic support |
| CN111485929A (en) * | 2020-05-19 | 2020-08-04 | 中煤能源研究院有限责任公司 | Fully-mechanized coal mining gangue-throwing filling hydraulic support and filling method thereof |
| CN215444108U (en) * | 2021-08-17 | 2022-01-07 | 西安绿色矿业研究院有限公司 | Hydraulic support for solid filling and mining of coal mine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586118A (en) * | 2021-08-17 | 2021-11-02 | 西安绿色矿业研究院有限公司 | Colliery solid waste fills hydraulic support |
| CN114233359A (en) * | 2022-01-24 | 2022-03-25 | 中煤能源研究院有限责任公司 | Caving type gangue filling hydraulic support and filling method |
| CN114233359B (en) * | 2022-01-24 | 2024-03-01 | 中煤能源研究院有限责任公司 | Roof-caving type gangue filling hydraulic support and filling method |
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