CN220769539U - Overlying strata grouting filling system for coal mining - Google Patents
Overlying strata grouting filling system for coal mining Download PDFInfo
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- CN220769539U CN220769539U CN202320693395.2U CN202320693395U CN220769539U CN 220769539 U CN220769539 U CN 220769539U CN 202320693395 U CN202320693395 U CN 202320693395U CN 220769539 U CN220769539 U CN 220769539U
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- pipe
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- coal mining
- grouting
- filling system
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- 239000003245 coal Substances 0.000 title claims abstract description 31
- 238000005065 mining Methods 0.000 title claims abstract description 27
- 239000002002 slurry Substances 0.000 claims abstract description 123
- 238000003756 stirring Methods 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 20
- 230000032798 delamination Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 8
- 238000007569 slipcasting Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 12
- 239000010881 fly ash Substances 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 239000002956 ash Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model provides a covering rock grouting filling system for coal mining, and belongs to the technical field of coal mining filling. Including cistern, ash storage jar, stirring pond, slush pump, sink thick liquid pipe and slip casting drilling, the outside of slip casting drilling is provided with the orifice device, the cistern pass through the raceway with the stirring pond is connected, ash storage jar pass through screw conveyer with the stirring pond is connected, the stirring pond pass through first thick liquid pipe with slush pump entry linkage, the slush pump export passes through first thick liquid pipe with sink thick liquid pipe one side lateral wall is connected, sink thick liquid pipe opposite side lateral wall is connected with the thick liquid pipe of second, be provided with the throwing bulb on the thick liquid pipe entrance lateral wall of second perpendicularly, second thick liquid pipe exit lateral wall is provided with out the bulb downwards. According to the utility model, the ball throwing pipe and the ball discharging pipe are arranged on the second slurry conveying pipe, so that the interior of the second slurry conveying pipe can be cleaned through a plurality of steel balls with rough surfaces.
Description
Technical Field
The utility model relates to the field of coal mine filling exploitation, in particular to a covering rock grouting filling system for coal mine exploitation.
Background
The ground surface is sunk after the coal seam is mined, and when a building structure exists on the ground, the ground surface needs to be moved in advance and then coal is mined. Aiming at the problems of difficult work of relocation staff, high relocation cost and long relocation period, the prior art proposes to adopt a filling mining technology to mine the coal seam, wherein a goaf generated by mining the coal seam is filled with filling materials so as to control overlying strata and then ground subsidence, and the coal mining is not relocated.
The mining overburden grouting filling technology is a common filling coal mining method, and grouting materials are injected into mining cracks generated by coal mining through grouting drilling holes in the coal mining process, so that the subsidence deformation of the overburden above is controlled. The grouting material is slurry mixed by water and fly ash and having a certain concentration, and the grouting slurry is pumped to a grouting drill hole by a grouting pump and then enters an delamination space. However, in the grouting filling process, because the fly ash is insoluble in water, a large amount of fly ash is deposited in the grouting pipeline due to long-time grouting, so that a grouting channel of the grouting pipeline is reduced, and the grouting quantity, grouting pressure and the like are influenced.
Disclosure of Invention
In order to overcome the defects, the utility model provides a covering rock grouting filling system for coal mining, which aims to solve the problems in the background technology.
The embodiment of the utility model provides a overlying strata grouting filling system for coal mining, which comprises a reservoir, an ash storage tank, a stirring pond, a slurry pump, a slurry collecting pipe and a grouting drilling hole, wherein an orifice device is arranged on the outer side of the grouting drilling hole, the reservoir is connected with the stirring pond through a water pipe, the ash storage tank is connected with the stirring pond through a screw conveyer, the stirring pond is connected with an inlet of the slurry pump through a first slurry conveying pipe, an outlet of the slurry pump is connected with one side wall of the slurry collecting pipe through the first slurry conveying pipe, a second slurry conveying pipe is connected with the other side wall of the slurry collecting pipe, an outlet of the second slurry conveying pipe is connected with the side wall of the orifice device, a ball throwing pipe is vertically arranged on the side wall of the inlet of the second slurry conveying pipe, a first ball net is arranged at the junction of the inlet of the second slurry conveying pipe and the side wall of the slurry collecting pipe, and a second ball net is arranged at the junction of the outlet of the second slurry conveying pipe and the orifice device.
In a specific embodiment, the slurry pump and the first slurry transfer pipe are provided with three sets between the stirring tank and the slurry collecting pipe.
In the implementation process, the stirring pool and the slurry collecting pipe are communicated through the three groups of slurry pumps and the first slurry conveying pipe, so that different channels can be conveniently selected for conveying.
In a specific embodiment, the joints of the three groups of the first slurry conveying pipes, the stirring pool and the slurry collecting pipe are respectively provided with a first ball valve, a second ball valve and a third ball valve.
In the implementation process, different channels can be opened for conveying by controlling the opening and closing of the first ball valve, the second ball valve and the third ball valve.
In a specific embodiment, the water delivery pipe is provided with a water delivery motor.
In the realization process, the water in the reservoir can be pumped into the stirring pool, so that the countercurrent transportation of the water is facilitated.
In a specific embodiment, the stirring tank is provided with a stirrer.
In the implementation process, the stirring machine is arranged, so that water and the fly ash in the stirring tank can be stirred, and the water and the fly ash can be fully mixed into the pulverized coal mortar body.
In a specific embodiment, the length of the first slurry conveying pipe is set within 5m, the length of the second slurry conveying pipe is 500-2000m, the first slurry conveying pipe and the second slurry conveying pipe are the same in size, and the diameter of the slurry collecting pipe is set to be 5-7 times of the diameter of the first slurry conveying pipe.
In the implementation process, the conveying of each path can be facilitated, and the goal of conveying the standard vertebrae is achieved.
In a specific embodiment, the two ends of the slurry collecting pipe are both in threaded connection with a first sealing cover, the threads on the top end of the ball throwing pipe are connected with a second sealing cover, and the threads on the bottom end of the ball outlet pipe are connected with a third sealing cover.
In the implementation process, the two ends of the slurry collecting pipe can be sealed by arranging the first sealing cover, and the interior of the slurry collecting pipe is convenient to clean; the second sealing cover is arranged, so that the top end of the ball throwing pipe can be opened, and the steel ball is convenient to throw in; through setting up the third sealing cover, can open out the bulb bottom, be convenient for take out the steel ball.
In a specific embodiment, the upper part of the orifice device is further provided with a pressure gauge.
In the implementation process, the pressure can be observed through the arrangement of the pressure gauge.
In a specific embodiment, the grouting borehole further comprises an outer first casing and an inner second casing, the second casing being provided with openings at the delamination development site.
In the implementation process, the first sleeve is used for sealing and isolating the loose layer section, and the second sleeve is used for sealing and isolating the bedrock bare hole section.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the ball throwing pipe and the ball discharging pipe are arranged on the second slurry conveying pipe, so that the interior of the second slurry conveying pipe can be cleaned through a plurality of steel balls with rough surfaces, in addition, the first slurry conveying pipe between the stirring pool and the slurry collecting pipe can be disassembled and assembled, and when cleaning is performed, the first slurry conveying pipe can be replaced in sequence, namely, the cleaning of the second slurry conveying pipe and the replacement of the first slurry conveying pipe do not need to be stopped, so that the cleaning is convenient and the efficiency is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a coal mining overburden grouting filling system provided by an embodiment of the utility model;
fig. 2 is a schematic diagram of a ball throwing pipe according to an embodiment of the present utility model.
In the figure: 1. a reservoir; 2. an ash storage tank; 3. a water pipe; 4. a water delivery motor; 5. a screw conveyor; 6. a stirring pool; 7. a stirrer; 8. a first slurry pipe; 9. a slurry pump; 10. a slurry collecting pipe; 11. a second slurry conveying pipe; 12. a ball outlet pipe; 13. an orifice device; 14. a pressure gauge; 15. a first sleeve; 16. a second sleeve; 17. and (5) casting a bulb.
Detailed Description
The technical solutions in the embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the utility model provides a overlying strata grouting filling system for coal mining, which comprises a reservoir 1, an ash storage tank 2, a stirring pool 6, a slurry pump 9, a slurry collecting pipe 10 and a grouting drilling hole, wherein an orifice device 13 is arranged on the outer side of the grouting drilling hole, the reservoir 1 is connected with the stirring pool 6 through a water pipe 3, the ash storage tank 2 is connected with the stirring pool 6 through a screw conveyer 5, the stirring pool 6 is connected with an inlet of the slurry pump 9 through a first slurry conveying pipe 8, an outlet of the slurry pump 9 is connected with one side wall of the slurry collecting pipe 10 through the first slurry conveying pipe 8, a second slurry conveying pipe 11 is connected with the other side wall of the slurry collecting pipe 10, an outlet of the second slurry conveying pipe 11 is connected with the side wall of the orifice device 13, a ball throwing pipe 17 is vertically arranged on the side wall at an inlet of the second slurry conveying pipe 11, a ball outlet pipe 12 is downwards arranged on the side wall at the outlet of the second slurry conveying pipe 11, and a net device is arranged at the position of the second slurry collecting pipe 11, and the orifice device is connected with the inlet of the second slurry collecting pipe 10.
Specifically, three groups of slurry pumps 9 and the first slurry conveying pipes 8 are arranged between the stirring pool 6 and the slurry collecting pipe 10, and the joints of the three groups of slurry conveying pipes 8, the stirring pool 6 and the slurry collecting pipe 10 are respectively provided with a first ball valve, a second ball valve and a third ball valve; the stirring pool 6 and the slurry collecting pipe 10 are communicated through the three groups of slurry pumps 9 and the first slurry conveying pipe 8, different channels are convenient to select and convey, and different channels can be opened and conveyed through controlling the switch of the first ball valve, the second ball valve and the third ball valve.
When the water delivery pipe is specifically arranged, the water delivery motor 4 is arranged on the water delivery pipe 3; the water in the reservoir 1 can be pumped into the stirring pool 6 by arranging the water delivery motor 4, so that the countercurrent delivery of the water is facilitated.
The stirring tank 6 is provided with a stirrer 7; by providing the mixer 7, the water and the fly ash in the stirring tank 6 can be mixed sufficiently to form a pulverized coal slurry.
In some specific embodiments, in order to facilitate conveying in each path to reach the standard, the length of the first slurry conveying pipe 8 is set within 5m, the length of the second slurry conveying pipe 11 is 500-2000m, the dimensions of the first slurry conveying pipe 8 and the second slurry conveying pipe 11 are the same, and the diameter of the slurry collecting pipe 10 is set to be 5-7 times of the diameter of the first slurry conveying pipe 8.
In other embodiments, the slurry collecting pipe 10 is screwed with a first sealing cover at both ends, the top end of the ball throwing pipe 17 is screwed with a second sealing cover, and the bottom end of the ball outlet pipe 12 is screwed with a third sealing cover; by arranging the first sealing covers, the two ends of the slurry collecting pipe 10 can be sealed, and the interior of the slurry collecting pipe 10 is convenient to clean; the top end of the ball throwing pipe 17 can be opened by arranging a second sealing cover, so that the steel balls can be conveniently thrown in; through setting up the third sealing cover, can open out bulb 12 bottom, be convenient for take out the steel ball.
In the present utility model, the upper part of the orifice device 13 is also provided with a pressure gauge 14; the pressure can be observed by providing the pressure gauge 14.
It will be appreciated that in other embodiments, the grouting borehole further comprises an outer first casing 15 and an inner second casing 16, the second casing 16 being provided with openings at the delamination development site; the first casing 15 is used to pack loose intervals and the second casing 16 is used to pack bedrock bare hole sections.
The coal mining overlying strata grouting filling system and the principle and the advantages of the method thereof are as follows:
the method for grouting and filling the overlying strata of the coal mining comprises the following steps:
s1, conveying water from a reservoir 1 into a stirring tank 6 through a water conveying motor 4 and a water conveying pipe 3, and conveying fly ash from an ash storage tank 2 into the stirring tank 6 through a screw conveyor 5;
s2, stirring in a stirring pool 6 through a stirrer 7, and pumping powdered coal mortar into a grouting drill hole through a slurry pump 9 and a first slurry conveying pipe 8 after stirring;
s3, after a period of time, reducing grouting pressure, reducing grouting concentration or directly changing grouting water, throwing a plurality of steel balls with rough surfaces into the second slurry conveying pipe 11 by opening a second sealing cover of the ball throwing pipe 17, improving grouting or water injection pressure, scraping solidified fly ash in the second slurry conveying pipe 11 by the steel balls, blocking an outlet of the second slurry conveying pipe 11 by a first ball separating net and a second ball separating net and self gravity, entering the ball outlet pipe 12, and opening a third sealing cover of the ball outlet pipe 12 to take out the steel balls;
s4, a first ball valve, a second ball valve and a third ball valve which are arranged at the joint of the first slurry conveying pipe 8, the stirring pool 6 and the slurry collecting pipe 10 are closed, the first slurry conveying pipe 8 is replaced in sequence, the cleaning of the whole second slurry conveying pipe 11 and the replacement of the first slurry conveying pipe 8 do not need to be stopped, and then the replaced first slurry conveying pipe 8 is cleaned;
s5, after the whole grouting filling engineering is finished, opening first sealing covers at two ends of the slurry collecting pipe 10 to clean the interior of the slurry collecting pipe 10.
According to the utility model, the ball throwing pipe 17 and the ball discharging pipe 12 are arranged on the second slurry conveying pipe 11, so that the interior of the second slurry conveying pipe 11 can be cleaned through a plurality of steel balls with rough surfaces, in addition, the first slurry conveying pipe 8 between the stirring tank 6 and the slurry collecting pipe 10 can be disassembled, and when cleaning is performed, the first slurry conveying pipe 8 can be replaced in sequence, namely, the cleaning of the second slurry conveying pipe 11 and the replacement of the first slurry conveying pipe 8 do not need to be stopped, so that the cleaning is convenient and the efficiency is high.
The above description is only an example of the present utility model and is not intended to limit the scope of the present utility model, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (9)
1. A grouting filling system for overlying strata in coal mining is characterized by comprising a reservoir (1), an ash storage tank (2), a stirring tank (6), a slurry pump (9), a slurry collecting pipe (10) and a grouting drilling hole, an orifice device (13) is arranged at the outer side of the grouting drilling hole, the reservoir (1) is connected with the stirring pool (6) through a water pipe (3), the ash storage tank (2) is connected with the stirring tank (6) through a screw conveyor (5), the stirring pool (6) is connected with the inlet of the slurry pump (9) through a first slurry conveying pipe (8), the outlet of the slurry pump (9) is connected with the side wall of one side of the slurry collecting pipe (10) through the first slurry conveying pipe (8), a second slurry conveying pipe (11) is connected with the side wall of the other side of the slurry collecting pipe (10), the outlet of the second slurry conveying pipe (11) is connected with the side wall of the orifice device (13), a ball throwing pipe (17) is vertically arranged on the side wall of the inlet of the second slurry conveying pipe (11), a ball outlet pipe (12) is arranged downwards on the side wall of the outlet of the second slurry conveying pipe (11), and a first ball-isolating net is arranged at the joint of the inlet of the second slurry conveying pipe (11) and the side wall of the slurry collecting pipe (10), and a second ball isolation net is arranged at the joint of the outlet of the second slurry conveying pipe (11) and the side wall of the orifice device (13).
2. A coal mining overburden grouting filling system as claimed in claim 1, characterised in that the slurry pump (9) and the first slurry pipe (8) are provided with three sets between the stirring tank (6) and the slurry collecting pipe (10).
3. The overlying strata grouting filling system for coal mining according to claim 2, wherein the joints of the three groups of the first grouting pipes (8) with the stirring tank (6) and the slurry collecting pipe (10) are respectively provided with a first ball valve, a second ball valve and a third ball valve.
4. The overlying strata grouting filling system for coal mining according to claim 1, wherein the water delivery pipe (3) is provided with a water delivery motor (4).
5. A coal mining overburden grouting filling system as claimed in claim 1, characterised in that the stirring tank (6) is provided with a stirrer (7).
6. A coal mining overburden grouting filling system as claimed in claim 1, characterised in that the length of the first slurry pipe (8) is set within 5m, the length of the second slurry pipe (11) is 500-2000m, the dimensions of the first slurry pipe (8) and the second slurry pipe (11) are the same, and the diameter of the slurry collecting pipe (10) is set to 5-7 times the diameter of the first slurry pipe (8).
7. The overlying strata grouting filling system for coal mining as claimed in claim 1, wherein the slurry collecting pipe (10) is provided with a first sealing cover in a threaded manner at both ends, the ball throwing pipe (17) is provided with a second sealing cover in a threaded manner at the top end, and the ball outlet pipe (12) is provided with a third sealing cover in a threaded manner at the bottom end.
8. A coal mining overburden grouting filling system as claimed in claim 1, characterised in that the upper part of the orifice means (13) is also provided with a pressure gauge (14).
9. A coal mining overburden grouting filling system in accordance with claim 1, characterised in that the grouting borehole further comprises an outer first casing (15) and an inner second casing (16), the second casing (16) being provided with openings at the development site of the delamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320693395.2U CN220769539U (en) | 2023-04-02 | 2023-04-02 | Overlying strata grouting filling system for coal mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320693395.2U CN220769539U (en) | 2023-04-02 | 2023-04-02 | Overlying strata grouting filling system for coal mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769539U true CN220769539U (en) | 2024-04-12 |
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ID=90620340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320693395.2U Active CN220769539U (en) | 2023-04-02 | 2023-04-02 | Overlying strata grouting filling system for coal mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769539U (en) |
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2023
- 2023-04-02 CN CN202320693395.2U patent/CN220769539U/en active Active
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