CN111946394A - Overburden rock isolation grouting filling green mining construction system and construction process thereof - Google Patents
Overburden rock isolation grouting filling green mining construction system and construction process thereof Download PDFInfo
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- CN111946394A CN111946394A CN202010974684.0A CN202010974684A CN111946394A CN 111946394 A CN111946394 A CN 111946394A CN 202010974684 A CN202010974684 A CN 202010974684A CN 111946394 A CN111946394 A CN 111946394A
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- ash
- stirring
- grouting
- tank
- supply system
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- 238000005065 mining Methods 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000011049 filling Methods 0.000 title claims abstract description 20
- 238000002955 isolation Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000011435 rock Substances 0.000 title claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 239000003245 coal Substances 0.000 claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000003208 petroleum Substances 0.000 claims abstract description 10
- 238000004537 pulping Methods 0.000 claims abstract description 9
- 239000002956 ash Substances 0.000 claims description 36
- 239000010881 fly ash Substances 0.000 claims description 27
- 239000004570 mortar (masonry) Substances 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- 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
- E21F15/08—Filling-up hydraulically or pneumatically
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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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)
- Remote Sensing (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a overburden rock isolation grouting filling green mining construction system and a construction process thereof. The water supply system comprises a clean water pump; the power supply system comprises a transformer; the ash supply system comprises a cement tank truck, an ash tank and a screw conveyer; the pulping system comprises a primary stirring tank and a secondary stirring tank; the grouting system comprises a piston type slurry pump; the pipeline system comprises a petroleum pipe and a geological pipe. The construction process comprises ash supply and transfer, water supply and storage, primary stirring, secondary stirring and grouting. The invention adopts the canned ash pulping process, meets the environmental protection requirement, has the capability of transferring ash in the middle, can provide uninterrupted slurry to ensure the continuous grouting, and can quickly regulate and control the concentration to ensure the grouting filling effect. The problem of among the prior art coal mining cause the earth's surface to sink easily for the earth's surface leads to the destruction of farmland and structures in certain extent because of the coal mining influence is solved.
Description
Technical Field
The invention belongs to the field of overlying strata isolation grouting filling coal mining, and particularly relates to an overlying strata isolation grouting filling green mining construction system and a construction process thereof.
Background
Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are generally divided into underground coal mines and opencast coal mines. The traditional coal mining easily causes the subsidence of the earth surface, so that the damage of farmlands and structures thereof within a certain range is caused by the influence of the coal mining on the earth surface.
A green mining technology for the overburden rock isolation grouting filling is a new method for mining the coal under pressure of a structure, high-pressure grouting filling is carried out on a mining overburden bed separation area through ground drilling, a compaction supporting area with a certain width is formed in the middle of a working face, and the stability of a overburden rock key layer structure is controlled by combining the compaction area and an isolation coal pillar, so that the subsidence of the earth surface is reduced, and the damages to farmlands and structures in the earth surface within the coal mining influence range are protected.
Aiming at the problems, a green mining construction system for overburden rock isolation grouting filling and a construction process thereof are provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a overburden rock isolation grouting filling green mining construction system and a construction process thereof, and solves the problems that the ground surface is easy to sink due to coal mining in the prior art, so that the damages to farmlands and structures thereof within a certain range are caused due to the influence of coal mining on the ground surface.
The purpose of the invention can be realized by the following technical scheme:
a overburden rock isolation grouting filling green mining construction system comprises a water supply system, a power supply system, an ash supply system, a pulping system, a stirring system, a grouting system and a pipeline system, wherein the water supply system is composed of a clean water pump; the power supply system is composed of a transformer; the ash supply system consists of a cement tank truck, an ash tank and a screw conveyer thereof; the pulping system consists of a primary stirring tank and a secondary stirring tank; the grouting system is composed of a piston type slurry pump; the pipeline system is composed of a petroleum pipe and a geological pipe.
Further, the power supply system supplies power to the whole system.
Further, the mass ratio of the maximum coal mining amount per day to the maximum fly ash amount per day is 3: 1; arranging according to the number and the distance of the drill holes, and obtaining the maximum number of the drill holes for simultaneous grouting according to the maximum diffusion radius of the slurry of 100 meters; the single-day grouting amount of a single ash tank is 400 tons; every two ash tanks are provided with a primary stirring pool; the single piston type slurry pump can inject 150 tons of slurry per day.
A construction process of a overburden rock isolation grouting filling green mining construction system comprises the following steps:
s1 transportation of ash
Transferring the fly ash generated by power generation of the power plant into an ash tank by using a cement tank truck;
s2, storing the supplied water
Pumping clear water in the well to a reservoir by using a clear water pump for storage;
s3, primary stirring
Transferring the fly ash stored in the ash tank into a primary stirring pool through a screw conveyor, transferring clear water stored in a reservoir into the primary stirring pool through a clear water pump, and mixing and stirring the clear water and the fly ash fully;
s4, stirring for the second time
Remotely conveying the once-stirred mortar to a secondary stirring tank through a petroleum pipe and a geological pipe for stirring again;
s5 grouting
And pumping the secondarily stirred mortar through a piston type slurry pump, and injecting the mortar along the grouting drill hole.
Further, in the step S3, the mass ratio of the clear water to the fly ash is controlled to be 3:2, the stirring speed is controlled to be 1200-1500 rpm, and the stirring time is controlled to be 2-3.5 h.
Further, in the step S4, the stirring speed is controlled to be 2200 to 3000rpm, and the stirring time is controlled to be 2.5 to 4 hours.
The invention has the beneficial effects that:
1. the invention adopts the canned ash pulping process, meets the environmental protection requirement, has the capability of transferring ash in the middle, can provide uninterrupted slurry to ensure the continuous grouting, and can quickly regulate and control the concentration to ensure the grouting filling effect.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of an overall mining construction system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a water supply system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a power supply system of an embodiment of the present invention;
FIG. 4 is a schematic view of an ash supply system according to an embodiment of the present invention;
FIG. 5 is a schematic view of a pulping system according to an embodiment of the invention;
FIG. 6 is a schematic view of a grouting system according to an embodiment of the invention;
FIG. 7 is a schematic view of a piping system according to an embodiment of the present invention;
fig. 8 is a flow chart of a mining construction process according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
As shown in figures 1-7, the overburden rock isolation grouting filling green mining construction system comprises a water supply system, a power supply system, an ash supply system, a slurry preparation system, a stirring system, a grouting system and a pipeline system, wherein the power supply system supplies power to the whole system. The water supply system consists of a clean water pump; the power supply system is composed of a transformer; the ash supply system consists of a cement tank truck, an ash tank and a screw conveyer thereof; the pulping system consists of a primary stirring tank and a secondary stirring tank; the grouting system is composed of a piston type slurry pump; the pipeline system is composed of a petroleum pipe and a geological pipe.
As shown in fig. 8, the green mining construction process for overburden rock isolation grouting filling comprises the following steps:
s1 transportation of ash
Transferring the fly ash generated by power generation of the power plant into an ash tank by using a cement tank truck;
s2, storing the supplied water
Pumping clear water in the well to a reservoir by using a clear water pump for storage;
s3, primary stirring
Transferring the fly ash stored in the ash tank into a primary stirring pool through a screw conveyor, transferring clear water stored in a reservoir into the primary stirring pool through a clear water pump, mixing and stirring the clear water and the fly ash fully, and controlling the mass ratio of the clear water to the fly ash to be 3: 2;
s4, stirring for the second time
Remotely conveying the once-stirred mortar to a secondary stirring tank through a petroleum pipe and a geological pipe for stirring again;
s5 grouting
And pumping the secondarily stirred mortar through a piston type slurry pump, and injecting the mortar along the grouting drill hole.
The construction process proposed by the present invention is further explained below by referring to several examples.
Example 1
S1 transportation of ash
Transferring the fly ash generated by power generation of the power plant into an ash tank by using a cement tank truck;
s2, storing the supplied water
Pumping clear water in the well to a reservoir by using a clear water pump for storage;
s3, primary stirring
Transferring the fly ash stored in the ash tank into a primary stirring pool through a screw conveyor, transferring clear water stored in a reservoir into the primary stirring pool through a clear water pump, mixing and stirring the clear water and the fly ash fully, controlling the mass ratio of the clear water to the fly ash to be 3:2, controlling the stirring speed to be 1500rpm, and stirring for 2 hours;
s4, stirring for the second time
Remotely conveying the once-stirred mortar to a secondary stirring tank through a petroleum pipe and a geological pipe for stirring again, wherein the stirring speed is controlled to be 2500rpm, and the stirring time is 3 hours;
s5 grouting
And pumping the secondarily stirred mortar through a piston type slurry pump, and injecting the mortar along the grouting drill hole.
Example 2
S1 transportation of ash
Transferring the fly ash generated by power generation of the power plant into an ash tank by using a cement tank truck;
s2, storing the supplied water
Pumping clear water in the well to a reservoir by using a clear water pump for storage;
s3, primary stirring
Transferring the fly ash stored in the ash tank into a primary stirring pool through a screw conveyor, transferring clear water stored in a reservoir into the primary stirring pool through a clear water pump, mixing and stirring the clear water and the fly ash fully, controlling the mass ratio of the clear water to the fly ash to be 3:2, controlling the stirring speed to be 1400rpm, and stirring for 2.5 hours;
s4, stirring for the second time
Remotely conveying the once-stirred mortar to a secondary stirring tank through a petroleum pipe and a geological pipe for stirring again, wherein the stirring speed is controlled to be 3000rpm, and the stirring time is 2.5 hours;
s5 grouting
And pumping the secondarily stirred mortar through a piston type slurry pump, and injecting the mortar along the grouting drill hole.
Example 3
S1 transportation of ash
Transferring the fly ash generated by power generation of the power plant into an ash tank by using a cement tank truck;
s2, storing the supplied water
Pumping clear water in the well to a reservoir by using a clear water pump for storage;
s3, primary stirring
Transferring the fly ash stored in the ash tank into a primary stirring pool through a screw conveyor, transferring clear water stored in a reservoir into the primary stirring pool through a clear water pump, mixing and stirring the clear water and the fly ash fully, controlling the mass ratio of the clear water to the fly ash to be 3:2, controlling the stirring speed to be 1200rpm, and stirring for 3.5 hours;
s4, stirring for the second time
Remotely conveying the once-stirred mortar to a secondary stirring tank through a petroleum pipe and a geological pipe for stirring again, and controlling the stirring speed to 2200rpm and the stirring time to be 4 hours;
s5 grouting
And pumping the secondarily stirred mortar through a piston type slurry pump, and injecting the mortar along the grouting drill hole.
It is noted that the mass ratio of the maximum coal mining amount per day to the maximum fly ash amount per day is 3: 1; arranging according to the number and the distance of the drill holes, and obtaining the maximum number of the drill holes for simultaneous grouting according to the maximum diffusion radius of the slurry of 100 meters; the single-day grouting amount of a single ash tank is 400 tons; every two ash tanks are provided with a primary stirring pool; the single piston type slurry pump can inject 150 tons of slurry per day.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (6)
1. A overburden rock isolation grouting filling green mining construction system comprises a water supply system, a power supply system, an ash supply system, a pulping system, a stirring system, a grouting system and a pipeline system, and is characterized in that the water supply system is composed of a clean water pump; the power supply system is composed of a transformer; the ash supply system consists of a cement tank truck, an ash tank and a screw conveyer thereof; the pulping system consists of a primary stirring tank and a secondary stirring tank; the grouting system is composed of a piston type slurry pump; the pipeline system is composed of a petroleum pipe and a geological pipe.
2. The overburden isolation grouting and filling green mining construction system according to claim 1, wherein the power supply system supplies power to the whole system.
3. The overlying strata isolation grouting filling green mining construction system is characterized in that the mass ratio of the maximum coal mining amount per day to the maximum fly ash amount per day is 3: 1; arranging according to the number and the distance of the drill holes, and obtaining the maximum number of the drill holes for simultaneous grouting according to the maximum diffusion radius of the slurry of 100 meters; the single-day grouting amount of a single ash tank is 400 tons; every two ash tanks are provided with a primary stirring pool; the single piston type slurry pump can inject 150 tons of slurry per day.
4. The process for constructing the overburden rock isolation grouting and filling green mining construction system according to any one of claims 1 to 2, wherein the process comprises the following steps:
s1 transportation of ash
Transferring the fly ash generated by power generation of the power plant into an ash tank by using a cement tank truck;
s2, storing the supplied water
Pumping clear water in the well to a reservoir by using a clear water pump for storage;
s3, primary stirring
Transferring the fly ash stored in the ash tank into a primary stirring pool through a screw conveyor, transferring clear water stored in a reservoir into the primary stirring pool through a clear water pump, and mixing and stirring the clear water and the fly ash fully;
s4, stirring for the second time
Remotely conveying the once-stirred mortar to a secondary stirring tank through a petroleum pipe and a geological pipe for stirring again;
s5 grouting
And pumping the secondarily stirred mortar through a piston type slurry pump, and injecting the mortar along the grouting drill hole.
5. The overlying strata isolation grouting filling green mining construction process as claimed in claim 4, wherein the mass ratio of clear water to fly ash in S3 is controlled to be 3:2, the stirring speed is controlled to be 1200-1500 rpm, and the stirring time is 2-3.5 h.
6. The process of claim 4, wherein in the step S4, the stirring speed is 2200 to 3000rpm, and the stirring time is 2.5 to 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974684.0A CN111946394A (en) | 2020-09-16 | 2020-09-16 | Overburden rock isolation grouting filling green mining construction system and construction process thereof |
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| CN202010974684.0A CN111946394A (en) | 2020-09-16 | 2020-09-16 | Overburden rock isolation grouting filling green mining construction system and construction process thereof |
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| CN111946394A true CN111946394A (en) | 2020-11-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278344A (en) * | 2021-12-27 | 2022-04-05 | 安徽理工大学 | Water spraying control method for separated layer crushing roof of tunneling roadway |
| CN115028422A (en) * | 2022-05-07 | 2022-09-09 | 中煤地质集团有限公司 | Novel coal seam roof separation layer grouting material and method |
-
2020
- 2020-09-16 CN CN202010974684.0A patent/CN111946394A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278344A (en) * | 2021-12-27 | 2022-04-05 | 安徽理工大学 | Water spraying control method for separated layer crushing roof of tunneling roadway |
| CN114278344B (en) * | 2021-12-27 | 2024-02-13 | 安徽理工大学 | Method for preventing and controlling water spraying of separation broken roof of tunneling roadway |
| CN115028422A (en) * | 2022-05-07 | 2022-09-09 | 中煤地质集团有限公司 | Novel coal seam roof separation layer grouting material and method |
| CN115028422B (en) * | 2022-05-07 | 2023-08-15 | 中煤地质集团有限公司 | Novel coal seam roof separation layer grouting material and method |
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