CN219638883U - Gangue ejector high-efficiency filling system - Google Patents
Gangue ejector high-efficiency filling system Download PDFInfo
- Publication number
- CN219638883U CN219638883U CN202223341564.0U CN202223341564U CN219638883U CN 219638883 U CN219638883 U CN 219638883U CN 202223341564 U CN202223341564 U CN 202223341564U CN 219638883 U CN219638883 U CN 219638883U
- Authority
- CN
- China
- Prior art keywords
- feeder
- underground
- gangue
- filling
- bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 description 17
- 238000005065 mining Methods 0.000 description 16
- 239000002002 slurry Substances 0.000 description 14
- 239000003245 coal Substances 0.000 description 10
- 239000011265 semifinished product Substances 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007962 solid dispersion Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a gangue injection high-efficiency filling system, which comprises an A ground feeding well, a B ground feeding well, an underground water tank, an accelerator tank and an underground air compressor; the ground feeding well A is sequentially connected with the underground gangue bin, the metering feeder A and the feeder; the ground feeding well is sequentially connected with a cementing bin, a metering feeder and a feeder; the underground water tank is sequentially connected with a variable-frequency water supply pump, an A flowmeter and a feeder; the accelerator box is connected with a variable frequency feed pump and a flow meter B in sequence; the underground air pressure fan is sequentially connected with the air storage tank and the air regulating valve; the feeder is connected with the continuous mixer, the filling industrial pump 12, the conveying pipeline and the bracket injector in sequence; the flowmeter B is connected with the bracket ejector; the air regulating valve is connected with the bracket ejector; the bracket injector is communicated with the area to be filled of the working surface.
Description
Technical Field
The utility model belongs to the technical field of mining engineering, and particularly relates to a gangue injection high-efficiency filling system.
Background
The longwall mining system is a main mining mode of a high-yield and high-efficiency mine, the traditional longwall face filling mining of the coal mine comprises gangue paste filling and gangue solid filling, and special hydraulic supports are adopted in the two modes. The gangue paste filling changes the standard mining operation system of the long-wall working face, increases the procedures of bracket isolation sealing, paste filling after the bracket and paste solidification, and has asynchronous coal mining and filling and long cycle operation period, thus leading to higher paste filling and mining cost and lower productivity and efficiency. The gangue solid filling is carried out by crushing gangue solid dispersion into a filling bracket, the bracket tail beam and the gangue discharging mechanism influence the top of a filling body, the compression rate of the gangue solid dispersion is higher, the control effect of coal seam overlying strata and ground surface subsidence deformation is poor, in addition, the gangue solid filling is required to be newly added with gangue well engineering, and the popularization and the application are limited. The existing filling modes have the defects of high cost, low efficiency, narrow application range and capacity bottleneck at different degrees.
Disclosure of Invention
The utility model aims to solve the problems of high cost, low efficiency and capacity bottleneck of the traditional gangue filling, and provides a high-efficiency gangue injection system.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
the gangue injection high-efficiency filling system comprises an A ground feeding well (1), a B ground feeding well (4), an underground water tank (7), an accelerator tank (14) and an underground air-pressing machine (17); the ground feeding well A (1) is connected with the underground gangue bin (2), the underground gangue bin (2) is connected with the metering feeder A (3), and the metering feeder A (3) is connected with the feeder (10); the ground feeding well (4) is connected with the underground cementing bin (5), the underground cementing bin (5) is connected with the B metering feeder (6), and the B metering feeder (6) is connected with the feeder (10); the underground water tank (7) is connected with the variable-frequency water supply pump (8), the variable-frequency water supply pump (8) is connected with the A flowmeter (9), and the A flowmeter (9) is connected with the feeder (10); the accelerator tank (14) is connected with a variable frequency feed pump (15), and the variable frequency feed pump (15) is connected with a B flowmeter (16); the underground air compressor (17) is connected with an air storage tank (18), and the air storage tank (18) is connected with an air regulating valve (19); the feeder (10) is connected with the continuous mixer (11), the continuous mixer (11) is connected with the filling industrial pump (12), the filling industrial pump (12) is connected with the conveying pipeline (13), and the conveying pipeline (13) is connected with the bracket injector (20); the flow meter B (16) is connected with the bracket injector (20); the air regulating valve (19) is connected with the bracket injector (20); the bracket injector (20) is communicated with a working surface to-be-filled area (21).
The gangue injection body high-efficiency filling method based on the gangue injection body high-efficiency filling system comprises the following steps of:
(1) Arranging an underground gangue bin and an underground cementing bin near the junction of an underground mining area transportation mountain and a section transportation gallery, and communicating a shared bin bottom chamber with the mining area transportation mountain; the crushed gangue powder enters an underground gangue bin through dead weight blanking of a ground feeding well; the glue powder enters a cementing bin under the well through dead weight blanking of a ground feeding well; a through hole is reserved at the tail end of each hydraulic base of the long-wall working surface, and a bracket injector with an adjustable pitching angle is arranged in the hole;
(2) Calculating the formula and raw material feeding capacity of the gangue injection high-efficiency filling system, and according to the calculation result, enabling the A metering feeder to continuously meter and feed broken gangue powder into the continuous mixer through the feeder, enabling the B metering feeder to continuously meter and feed glue solid powder into the continuous mixer through the feeder, enabling the variable-frequency water feeding pump and the A flowmeter to be controlled in a closed loop mode, and enabling mine water to continuously meter and feed the broken gangue powder into the continuous mixer through the feeder; the semi-finished product slurry stirred by the continuous stirrer is pressurized by a filling industrial pump and enters the input end of the bracket ejector through a conveying pipeline; the variable frequency feed pump and the flowmeter B are controlled in a closed loop manner, and the accelerator is continuously metered and fed into the input end of the bracket ejector; the air regulating valve regulates the flow of compressed air in the air storage tank and then enters the input end of the bracket ejector; under the guidance of compressed air jet, the bracket injector completes the mixing of semi-finished product slurry and accelerator and then sprays and outputs the mixture to form the filling of an injector body.
Preferably, the formula and raw material feeding capacity of the gangue injection body high-efficiency filling system are calculated according to the following algorithm:
and (3) formula calculation:
M T ＝K TC M c ；
wherein M is g -gangue powder calculation proportion, t/m 3 ；M C Setting the proportion of cementing material, t/m 3 ；M W -water calculation of the ratio, t/m 3 ；M T -calculating the proportion of the accelerator, t/m 3 ；W g -gangue powder moisture content,%; c (C) m -paste mass concentration,%; gamma ray s True density of gangue, t/m 3 ；γ C True cement density, t/m 3 ；γ w True density of water, t/m 3 ；K TC -relative proportion of accelerator usage,%;
raw material feeding capability:
Q g ＝Q P M g ；
Q C ＝Q P M C ；
Q W ＝Q P M W ；
wherein Q is P Jet flow, m 3 /h；Q g -gangue powder feeding capacity, t/h; q (Q) c -cement feeding capacity, t/h; q (Q) w -water feeding capacity, t/h; q (Q) T Accelerator feed capacity, m 3 /h；γ T Accelerator true density, t/m 3 。
Preferably, the maximum granularity of the crushed gangue powder is-20 mm, the mass concentration range of the semi-finished product slurry is 75-85%, the pumpable time of the semi-finished product slurry is 8h, and the initial setting time of the jet body is 5-30 min.
Compared with the prior art, the utility model has the beneficial effects that:
1. the gangue injection body can be filled by adopting the traditional hydraulic support of the existing long-wall working face, and only the through holes are required to be formed near the support base, so that the frame structure of the traditional support is not changed, the defect that the traditional gangue filling is comprehensively provided with a special support is avoided, the traditional support of a mine and the filling support are universal, and the investment of the working face filling equipment is reduced.
2. The gangue injection body is used for filling and underground coal mining work in parallel, and the quick setting gangue injection body is adopted, so that the 'machine following operation' that the bracket follows the coal mining machine and moves timely and the 'frame following operation' that the filling follows the bracket to move forward are realized, the filling does not influence the two-way feeding coal cutting and frame moving of the upper end and the lower end of the long wall working surface, the defect that the gangue paste filling needs to be independently provided with a setting work is eliminated, and the problems of contradiction between mining and filling and the bottleneck of productivity of the traditional paste filling are solved.
3. The gangue injection body is filled with the slurry at a higher concentration than the paste, the limitation of self leveling to the slurry concentration in a filling area is not needed to be considered, the pressurized pipeline transportation is only needed, the rapid-hardening gangue injection body has no flow diffusion phenomenon in the filling area, the injection body has the characteristic of adhesion, namely forming, the operation of isolating and sealing a paste filling front support is eliminated, the side thrust of the paste filling flowing slurry to a hydraulic support is reduced, the safe filling under the condition of low supporting strength can be realized, and the defects of high working resistance and high manufacturing cost of the traditional paste filling support are overcome.
4. The gangue injection body adopts the following frame filling, the coal cutting step distance, the frame moving step distance and the filling step distance are unified, the step distance of every other cutter coal is 0.8m, the available filling time of coal mining work is long, the space to be filled is small, the capacity configuration of filling system equipment is reduced, the defect that the traditional paste filling has huge capacity due to the requirement of 'short time and large quantity' is overcome, and the investment of the filling system equipment is small
5. On one hand, the addition amount of the accelerator is adjustable, and the accelerator is suitable for different 'chasing filling' operation speeds; on the other hand, the semi-finished product slurry of the conveying pipeline before entering the working face is not influenced by an accelerator, the pumping time of the semi-finished product slurry is 8 hours, and the washing-free pipe filling can be realized for the conventional coal mining production circulation system of three-mining-one-standard or two-mining-one-standard, so that the defects of switching and flushing pipelines of various slurry filling of the traditional paste are overcome.
6. The gangue injection body is filled in each hydraulic support, and the support injectors are arranged on each hydraulic support, so that the active roof connection filling of the injection body can be realized by adjusting the elevation angle of injection, and the defect that the active roof connection is difficult in traditional paste filling and solid filling is overcome. In addition, the filling step distance is only 0.8m as same as the frame moving step distance, the movement distance of the jet body is short, the kinetic energy loss in the process is small, the attachment and accumulation of the jet body are compact, and the filling effect is good.
7. The underground storage bin is arranged, so that the ground feeding is convenient, the underground station building is close to the working face, and the hidden trouble that the traditional paste filling ground station building drill hole conveys paste to cause pipe blockage is eliminated.
In a word, the utility model provides a gangue injection high-efficiency filling system and a gangue injection high-efficiency filling method, a filling station is built underground close to a working surface, the working surface adopts a traditional frame type, a base is provided with a through hole for arranging a bracket injector, and an accelerator is added at the tail end. The long wall working surface is synchronously filled, the support machine-following operation, the filling and frame-following operation, the concentration of the spray body is high, the spray body is formed after adhesion, the active roof-contacting effect is good, and the pipe filling can be avoided; the separate procedures of isolation, sealing, solidification and the like of the traditional paste filling are eliminated, the equipment investment and the energy consumption are reduced, and the system efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a high-efficiency filling system for gangue injection bodies.
In the figure: 1. a, a ground feeding well; 2. a downhole gangue bin; 3. a metering feeder; 4. b, a ground feeding well; 5. a downhole cementing bin; 6. b, metering a feeder; 7. a downhole water tank; 8. a variable frequency feed pump; 9. a flowmeter A; 10. a feeder; 11. a continuous mixer; 12. filling an industrial pump; 13. a delivery line; 14. an accelerator box; 15. a variable frequency feed pump; 16. a flow meter B; 17. a down-hole air compressor; 18. a gas storage tank; 19. an air regulating valve; 20. a rack ejector; 21. the working surface is to be filled.
Detailed Description
Example 1
Referring to fig. 1, the gangue spray high-efficiency filling system comprises an A ground feeding well 1, a B ground feeding well 4, a downhole water tank 7, an accelerator tank 14 and a downhole air-pressure fan 17; the ground feeding well A is connected with the underground gangue storage bin 2, the underground gangue storage bin 2 is connected with the metering feeder A3, and the metering feeder A3 is connected with the feeder 10; the ground feeding well B4 is connected with the underground cementing bin 5, the underground cementing bin 5 is connected with the metering feeder B6, and the metering feeder B6 is connected with the feeder 10; the underground water tank 7 is connected with the variable-frequency water supply pump 8, the variable-frequency water supply pump 8 is connected with the A flowmeter 9, and the A flowmeter 9 is connected with the feeder 10; the accelerator tank 14 is connected with a variable frequency feed pump 15, and the variable frequency feed pump 15 is connected with a B flowmeter 16; the underground air pressure fan 17 is connected with an air storage tank 18, and the air storage tank 18 is connected with an air regulating valve 19; the feeder 10 is connected with a continuous mixer 11, the continuous mixer 11 is connected with a filling industrial pump 12, the filling industrial pump 12 is connected with a conveying pipeline 13, and the conveying pipeline 13 is connected with a bracket injector 20; the B flowmeter 16 is connected with a bracket injector 20; the air regulating valve 19 is connected with the bracket injector 20; the bracket injector 20 is communicated with a working surface to-be-charged area 21.
The gangue injection body high-efficiency filling method based on the gangue injection body high-efficiency filling system comprises the following steps of:
(1) Arranging an underground gangue bin and an underground cementing bin near the junction of an underground mining area transportation mountain and a section transportation gallery, and communicating a shared bin bottom chamber with the mining area transportation mountain; the crushed gangue powder enters an underground gangue bin through dead weight blanking of a ground feeding well; the glue powder enters a cementing bin under the well through dead weight blanking of a ground feeding well; a through hole is reserved at the tail end of each hydraulic base of the long-wall working surface, and a bracket injector with an adjustable pitching angle is arranged in the hole;
(2) The formulation and feedstock capacity of the gangue spray body high efficiency filling system was calculated according to the following algorithm:
and (3) formula calculation:
M T ＝K TC M c ；
wherein M is g -gangue powder calculation proportion, t/m 3 ；M C Setting the proportion of cementing material, t/m 3 ；M W -water calculation of the ratio, t/m 3 ；M T -calculating the proportion of the accelerator, t/m 3 ；W g -gangue powder moisture content,%; c (C) m -paste mass concentration,%; gamma ray s True density of gangue, t/m 3 ；γ C True cement density, t/m 3 ；γ w True density of water, t/m 3 ；K TC -relative proportion of accelerator usage,%;
raw material feeding capability:
Q g ＝Q P M g ；
Q C ＝Q P M C ；
Q W ＝Q P M W ；
wherein Q is P Jet flow, m 3 /h；Q g -gangue powder feeding capacity, t/h; q (Q) c -cement feeding capacity, t/h; q (Q) w -water feeding capacity, t/h; q (Q) T Accelerator feed capacity, m 3 /h；γ T -speed of rotationTrue density of coagulant, t/m 3 ；
According to the calculation result, the A metering feeder continuously meters and feeds the crushed gangue powder into the continuous mixer through the feeder, the B metering feeder continuously meters and feeds the gel solid powder into the continuous mixer through the feeder, the variable-frequency water supply pump and the A flowmeter are controlled in a closed loop manner, and the mine water continuously meters and feeds the mine water into the continuous mixer through the feeder; the semi-finished product slurry stirred by the continuous stirrer is pressurized by a filling industrial pump and enters the input end of the bracket ejector through a conveying pipeline; the variable frequency feed pump and the flowmeter B are controlled in a closed loop manner, and the accelerator is continuously metered and fed into the input end of the bracket ejector; the air regulating valve regulates the flow of compressed air in the air storage tank and then enters the input end of the bracket ejector; under the guidance of compressed air jet, the bracket injector completes the mixing of semi-finished product slurry and accelerator and then sprays and outputs the mixture to form the filling of an injector body.
Wherein the maximum granularity of the crushed gangue powder is-20 mm, the mass concentration range of the semi-finished product slurry is 75-85%, the pumping time of the semi-finished product slurry is 8h, and the initial setting time of the jet body is 5-30 min.
Claims (1)
1. The gangue injection high-efficiency filling system is characterized by comprising an A ground feeding well (1), a B ground feeding well (4), an underground water tank (7), an accelerator tank (14) and an underground air compressor (17); the ground feeding well A (1) is connected with the underground gangue bin (2), the underground gangue bin (2) is connected with the metering feeder A (3), and the metering feeder A (3) is connected with the feeder (10); the ground feeding well (4) is connected with the underground cementing bin (5), the underground cementing bin (5) is connected with the B metering feeder (6), and the B metering feeder (6) is connected with the feeder (10); the underground water tank (7) is connected with the variable-frequency water supply pump (8), the variable-frequency water supply pump (8) is connected with the A flowmeter (9), and the A flowmeter (9) is connected with the feeder (10); the accelerator tank (14) is connected with a variable frequency feed pump (15), and the variable frequency feed pump (15) is connected with a B flowmeter (16); the underground air compressor (17) is connected with an air storage tank (18), and the air storage tank (18) is connected with an air regulating valve (19); the feeder (10) is connected with the continuous mixer (11), the continuous mixer (11) is connected with the filling industrial pump (12), the filling industrial pump (12) is connected with the conveying pipeline (13), and the conveying pipeline (13) is connected with the bracket injector (20); the flow meter B (16) is connected with the bracket injector (20); the air regulating valve (19) is connected with the bracket injector (20); the bracket injector (20) is communicated with a working surface to-be-filled area (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223341564.0U CN219638883U (en) | 2022-12-12 | 2022-12-12 | Gangue ejector high-efficiency filling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223341564.0U CN219638883U (en) | 2022-12-12 | 2022-12-12 | Gangue ejector high-efficiency filling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219638883U true CN219638883U (en) | 2023-09-05 |
Family
ID=87806697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223341564.0U Active CN219638883U (en) | 2022-12-12 | 2022-12-12 | Gangue ejector high-efficiency filling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219638883U (en) |
-
2022
- 2022-12-12 CN CN202223341564.0U patent/CN219638883U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112814732B (en) | Waste stone and tailing mixed slurry preparation and pumping filling device | |
| CN109956712A (en) | Continous way builds recycled aggregate filling coal mine gob system and technique | |
| CN203145957U (en) | Mining concrete wet-type injecting equipment | |
| CN106194249B (en) | A kind of coal mine gob totipotency Paste-filling System and method | |
| CN106065782A (en) | A kind of big flow high concentration structure stream full tail sand cemented filling technique | |
| CN103061787A (en) | Mining wet type concrete spraying device | |
| CN102635373B (en) | High-pressure hydraulic injection system | |
| CN219638883U (en) | Gangue ejector high-efficiency filling system | |
| CN204826665U (en) | Physical blowing foam concrete pumping system that foams | |
| CN214303937U (en) | Preparation of mixed ground paste of barren rock and tailings and pump sending filling device | |
| CN204221981U (en) | Clay core wall of earth dam antiseepage gravel earth material preparation facilities | |
| CN112174608A (en) | Gob-side entry retaining filling material for thin coal seam and medium-thickness coal seam and preparation method thereof | |
| CN105464701A (en) | Super-capacity stable continuous filling system | |
| CN116241319B (en) | Paste filling system and dual-mode joint arrangement method thereof | |
| CN115822700A (en) | Efficient filling system and method for gangue injection body | |
| CN212262470U (en) | Paste storage thickener | |
| CN207795147U (en) | A kind of layer-through drilling separate type whole process gas drainage hole sealing device | |
| CN110486082A (en) | A kind of method that goaf different materials alternately fill | |
| CN115977722A (en) | Efficient filling system and method for gangue injection body | |
| CN212508207U (en) | Pneumatic automatic liquid injection device for coal mine | |
| CN111888805A (en) | Paste storage thickener and thickening process | |
| CN219826843U (en) | Long-distance pumping grouting equipment for mine roadway | |
| CN211864803U (en) | Preparation system of three useless base expanded materials of coal electricity integration | |
| CN114109491A (en) | Goaf mixed filling method and device for selecting reserved roadway | |
| CN203834482U (en) | Closed continuous secondary watering wet shotcreting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |