CN113339058A - Fluidized gangue layer adjacent surface subsequent filling system and method - Google Patents
Fluidized gangue layer adjacent surface subsequent filling system and method Download PDFInfo
- Publication number
- CN113339058A CN113339058A CN202110707624.7A CN202110707624A CN113339058A CN 113339058 A CN113339058 A CN 113339058A CN 202110707624 A CN202110707624 A CN 202110707624A CN 113339058 A CN113339058 A CN 113339058A
- Authority
- CN
- China
- Prior art keywords
- gangue
- filling
- slurry
- fluidized
- coal wall
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003245 coal Substances 0.000 claims abstract description 67
- 239000002002 slurry Substances 0.000 claims abstract description 49
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 238000009792 diffusion process Methods 0.000 claims abstract description 5
- 239000010878 waste rock Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 5
- 239000002910 solid waste Substances 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000014366 other mixer Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E21F15/06—Filling-up mechanically
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a fluidized gangue local layer adjacent face subsequent filling system and a fluidized gangue local layer adjacent face subsequent filling method. The underground slurry preparation system comprises a crusher, a conveyor, a filling pump and a stirrer; the slurry conveying system comprises a filling pipeline, an annular flowmeter and a three-way pipe; the goaf filling system comprises a coal wall grouting drill hole, a high-pressure valve and a pipe orifice pressure gauge; and (3) obtaining the coal wall grouting drilling hole spacing based on a slurry diffusion theory, and controlling grouting time according to the pipe orifice pressure. The method provided by the invention is convenient to use, safe, reliable and high in applicability, can efficiently treat the solid waste gangue, can fill the goaf at the side of the coal pillar, improves the stability of the coal pillar in a section, and prevents a series of mine safety problems.
Description
Technical Field
The invention belongs to the field of solid waste treatment, and particularly relates to a fluidized gangue local-layer adjacent-face subsequent filling system and method, which are particularly suitable for underground on-site filling treatment of gangue in mines with large mining depths.
Background
The coal mine waste rock output in China is large, the coal mine waste rock output is mainly concentrated in main waste rock producing areas such as northeast, south and southwest, the annual discharge amount is more than seven hundred million tons, and the serious problems of water resource pollution damage, atmospheric resource pollution damage, land occupation and the like are caused by the large discharge of the produced waste rock, so that the surrounding ecological environment is directly influenced. The realization of waste rock emission reduction becomes the most important factor in coal enterprise production, and the large-scale treatment of mine waste rock is imperative.
At present, the domestic waste rock large-scale treatment methods are mainly divided into ground treatment methods for waste rock brick making, waste rock building material making, reclamation and the like and underground filling treatment methods for solid filling coal mining and cemented filling coal mining. As the coal producing provinces such as Shanxi, Henan and Shandong order that the waste rock is not allowed to be accumulated on the ground surface, the waste rock ground treatment method is not suitable for the current environmental protection policy, and the underground filling disposal method needs to invest a large amount of filling material cost and equipment investment cost, thereby increasing the burden of coal enterprises.
Therefore, the research of a gangue filling method which can realize the underground in-situ backfill treatment of the gangue and reduce the investment of the gangue treatment cost becomes a great technical problem of coal mining.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the environmental protection problem of the mass discharge of the waste rocks, the invention aims to provide the fluidized waste rock layer adjacent surface subsequent filling system and the method which are simple in system, high in treatment amount and low in cost.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a fluidized gangue local layer adjacent face subsequent filling system conveys gangue-water mixed slurry to an adjacent working face goaf and comprises an underground slurry preparation system, a slurry conveying system and a goaf filling system. The underground slurry preparation system comprises a crusher, a conveyor, a filling pump and a stirrer; the slurry conveying system comprises a filling pipeline, an annular flowmeter and a three-way pipe; the goaf filling system comprises a coal wall grouting drill hole, a high-pressure valve and a pipe orifice pressure gauge; and (3) obtaining the coal wall grouting drilling hole spacing based on a slurry diffusion theory, and controlling grouting time according to the pipe orifice pressure. The method provided by the invention is convenient to use, safe, reliable and high in applicability, can efficiently treat the solid waste gangue, can fill the goaf at the side of the coal pillar, improves the stability of the coal pillar in a section, and prevents a series of mine safety problems.
One object of the invention is to provide a fluidized gangue local layer adjacent subsequent filling system, which comprises a slurry preparation system, a slurry conveying system and a goaf filling system,
the slurry preparation system comprises a waste rock bin, a reservoir and a stirrer, wherein the waste rock bin and the reservoir are both connected with the stirrer;
the slurry conveying system comprises a filling pump and a filling pipeline, and the filling pipeline is connected with the stirrer through the filling pump;
the goaf filling system comprises coal wall grouting drill holes, and the coal wall grouting drill holes are formed in sectional coal pillars; and the tail end of the filling pipeline is connected to the coal wall grouting drill hole to fill the goaf.
In one example, the slurry preparation system, slurry delivery system, and gob filling system are all disposed downhole.
In one example, the slurry preparation system further comprises a crusher and a conveyor, wherein an outlet of the crusher is connected with a gangue inlet of the gangue bin through the conveyor, and a gangue outlet of the gangue bin is connected with the stirrer through the conveyor; the crusher comprises a jaw crusher and a combined crusher, wherein the jaw crusher and the combined crusher are connected through a conveyor, the jaw crusher is used for primary crushing, and the combined crusher is used for secondary crushing.
In one example, the gangue warehouse stores gangue, the filling particle size of the gangue is less than 8mm, the gangue is derived from washing gangue and driving gangue, and the lithology of the gangue comprises at least one of mudstone, argillaceous sandstone or sandstone; the mass concentration of slurry formed by mixing the gangue and water is 70%.
In one example, the slurry conveying system further comprises a three-way pipe and an annular flowmeter, the filling pipeline is formed by connecting a plurality of steel pipes, and the annular flowmeter is connected between every two adjacent steel pipes; the filling pipeline is arranged in the air return roadway, and the coal wall grouting drill hole is connected with the filling pipeline through the three-way pipe.
In one example, the borehole radius r of the coal wall grout borehole0The depth of the coal wall grouting drill hole is 0.1-0.2 m, the depth of the coal wall grouting drill hole is the width of the coal pillar, and the depth is 3-10 m.
In one example, the number of the coal wall grouting drill holes is not less than one, and when the number of the coal wall grouting drill holes is more than 1, the distance L between the adjacent coal wall grouting drill holes is 2 times of slurry diffusion radius, and the calculation formula is as follows:
in the formula, P0Is grouting pressure, MPa; t represents grouting time, s; b is the crack opening degree, mm; r is0Is the borehole radius, m; mu is dynamic viscosity of slurry, N.s/m2。
In one example, the goaf filling system further comprises a high-pressure valve and a pipe orifice pressure gauge, wherein the high-pressure valve and the pipe orifice pressure gauge are arranged before each coal wall grouting drill hole, and grouting time is controlled according to pipe orifice pressure.
The invention also aims to provide a filling method of the fluidized gangue layer adjacent surface subsequent filling system, which comprises the following steps:
(1) stirring waste rocks in the waste rock bin and water in the reservoir by a stirrer to prepare slurry;
(2) pumping the slurry into a filling pipeline through a filling pump, and conveying the slurry to a filling area;
(3) and filling the goaf by slurry in the filling pipeline through the coal wall grouting drilling hole. Has the advantages that: compared with the prior art, the fluidized gangue local layer adjacent surface subsequent filling system and method provided by the invention have the following advantages: the invention is especially suitable for the underground in-situ filling treatment of the gangue in mines with large mining depths. On the premise of ensuring the waste rock treatment, the method reduces the waste rock treatment cost and reduces the ecological damage and pollution of the ground environment; after the waste rock is injected into the goaf and the waste roadway near the stoping line, the original space is occupied, and the natural ignition of the coal bed is effectively prevented. The method is convenient and reliable, has strong applicability and wide application prospect.
Drawings
FIG. 1 is a schematic view of the filling system arrangement of the present invention;
FIG. 2 is a fill line connection of the present invention;
fig. 3 is a diagram of a coal wall grouting borehole arrangement of the present invention.
In the figure: 1-a crusher; 2-a conveyor; 3-a stirrer; 4-a filling pump; 5-filling the pipeline; 6-a ring-shaped flow meter; 7-a three-way pipe; 8-coal wall grouting and drilling; 9-high pressure valve; 10-nozzle pressure gauge.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described, 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.
As shown in figure 1, the fluidized gangue local-layer adjacent-face subsequent filling system provided by the invention is used for conveying gangue-water mixed slurry to adjacent working face goafs and comprises an underground slurry preparation system, a slurry conveying system and a goaf filling system.
The material preparation system comprises a crusher 1, a conveyor 2, a stirrer 3 and a filling pump 4, washing gangue obtained from the three-level washing chamber is crushed to be below 8mm in particle size through the crusher 1, the crushed gangue is conveyed into the stirrer 3 through the conveyor 2, is fully stirred and mixed with water to prepare filling slurry with the concentration of 70%, and the filling slurry is pumped into a filling pipeline 5 through the filling pump 4.
In one example, the crusher 1 comprises a jaw crusher and a compound crusher, wherein the jaw crusher is connected with the compound crusher by a conveyor, the jaw crusher is used for primary crushing and the compound crusher is used for secondary crushing. Washing gangue and tunneling gangue obtained from the three-level washing chamber firstly enter a jaw crusher through a belt conveyor to be primarily crushed, then enter a composite crusher through the belt conveyor to be secondarily crushed, so that the particle size of the crushed gangue is smaller than 8mm, and finally enter a gangue bin through the belt conveyor to be stored.
The gangue in the gangue bin falls to a conveyor 2 below, and the gangue is conveyed to a stirrer 3 after being metered. A water pipe is required to be connected to a water inlet of the stirrer and provide water meeting the stirring amount, and the water flow flowing out of the reservoir is controlled through the valve bank; the gangue and water are fully stirred by a stirrer 5 to prepare slurry, the slurry is discharged to a filling pump 4 and is conveyed to an adjacent working face goaf by a filling pipeline 5, and finally, filling is carried out through a coal wall grouting drill hole 8 which is arranged in advance. Optionally, the conveyor 2 used in the present invention is a belt conveyor, but may be other conveyors. Optionally, the mixer 3 used in the present invention is a continuous mixer, and may be other mixers.
As shown in fig. 2, the slurry conveying system comprises a filling pipeline 5, an annular flowmeter 6 and a three-way pipe 7, wherein the filling pipeline 5 is composed of steel pipes with the inner diameter of 179mm, the wall thickness of 12mm and the length of 5m, and the annular flowmeter 6 is connected between the steel pipes for monitoring the slurry conveying condition in the pipe and facilitating the diagnosis of the pipe blockage position; the turning part of the filling pipeline 5 is connected by a three-way pipe 7 and is connected to a coal wall grouting drill hole 8.
As shown in fig. 3, the gob filling system bagThe coal wall grouting device comprises coal wall grouting drill holes 8, a high-pressure valve 9 and a pipe orifice pressure gauge 10, wherein the coal wall grouting drill holes 8 are arranged in advance, and the distance between the coal wall grouting drill holes is the radius r of the drill holes0And calculating to obtain the product. The grouting time is controlled by the high-pressure valve 9 and the pipe orifice pressure gauge 10, when the pipe orifice pressure gauge 10 displays that the numerical value rises, the high-pressure valve 9 is closed to seal holes, and grouting operation of the next coal wall grouting drill hole 8 is prepared. Specifically, as shown in fig. 3, the coal wall grouting drill hole 8 is filled at the end of the filling pipeline, and by real-time monitoring of the orifice pressure gauge 10, when the real-time monitoring data of the orifice pressure gauge 10 reaches the upper limit value of the pressure of the coal wall grouting drill hole 8 (or when slurry flows out from the adjacent coal wall grouting drill hole 8, it can be considered that the grouting is finished), it is determined that the coal wall grouting drill hole 8 is filled, and then the high-pressure valve 9 is closed, and the length of the filling pipeline is adjusted to be aligned with the next coal wall grouting drill hole 8 for filling. The grouting time may also be a more accurate specific time obtained from experience of multiple grouting filling, for example, set to 2 h. It should be noted that 2h may not be able to fill a coal wall grouting borehole in the field, and 2h means that 2h grouting is performed by a maintainer in order to match the mining process, so that 2h is selected as a reasonable grouting time.
Optionally, in one example of the invention, a coal wall grouting bore 8 is provided in the section coal pillar.
Alternatively, in one example of the invention, the borehole radius r of the coal wall grout borehole 800.1 to 0.2 m.
Optionally, in an example of the present invention, there is not less than one coal wall grouting drill hole 8, and when the number of the coal wall grouting drill holes 8 is greater than 1, the distance L between adjacent coal wall grouting drill holes 8 is 2 times the slurry diffusion radius, and the calculation formula is:
in the formula, P0Is grouting pressure, MPa; t represents grouting time, s; b is the crack opening degree, mm; r is0Is the borehole radius, m; mu is slurryDynamic viscosity, N.s/m2。
Examples
According to the solving method, the actual pump pressure of the filling pump 4 is 10MPa and the flow reaches 150m by taking the grouting site condition of a certain mine in Henan province as an example3H, the slurry conveying distance is about 1500m, and the pressure at the outlet of the filling pipeline 5 is the grouting pressure P0About 4.6MPa, the designed grouting time T is 2h, the goaf fracture opening b is 0.03mm, and the drilling radius r00.1m, and a dynamic viscosity of slurry of 2.5 Ns/m2. As can be seen from the equation (1), the coal wall grouting hole pitch is 12.64 m.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (9)
1. A fluidized gangue layer adjacent surface subsequent filling system is characterized in that the filling system comprises a slurry preparation system, a slurry conveying system and a goaf filling system,
the slurry preparation system comprises a waste rock bin, a reservoir and a stirrer (5), wherein the waste rock bin and the reservoir are both connected with the stirrer (3);
the slurry conveying system comprises a filling pump (4) and a filling pipeline (5), wherein the filling pipeline (5) is connected with the stirrer (3) through the filling pump (4);
the goaf filling system comprises coal wall grouting drill holes (8), and the coal wall grouting drill holes (8) are arranged on the sectional coal pillars; the tail end of the filling pipeline (5) is connected to the coal wall grouting drill hole (8) to fill the goaf.
2. The fluidized gangue local-level adjacent subsequent filling system as claimed in claim 1, wherein the slurry preparation system, the slurry conveying system and the goaf filling system are all arranged underground.
3. The fluidized gangue local adjacent surface subsequent filling system as claimed in claim 1, wherein the slurry preparation system further comprises a crusher (1) and a conveyor (2), an outlet of the crusher (1) is connected with a gangue inlet of the gangue bin through the conveyor (2), and a gangue outlet of the gangue bin is connected with the stirrer (3) through the conveyor (2); the crusher (1) comprises a jaw crusher and a composite crusher, wherein the jaw crusher and the composite crusher are connected through a conveyor, the jaw crusher is used for primary crushing, and the composite crusher is used for secondary crushing.
4. The system for local adjacent subsequent filling of fluidized gangue as claimed in claim 1, wherein gangue is stored in the gangue bin, the filling particle size of the gangue is less than 8mm, the gangue is derived from washing gangue and driving gangue, and the lithology of the gangue comprises at least one of mudstone, argillaceous sandstone or sandstone; the mass concentration of slurry formed by mixing the gangue and water is 70%.
5. The fluidized gangue local adjacent subsequent filling system as claimed in claim 1, wherein the slurry conveying system further comprises a three-way pipe (7) and an annular flowmeter (6), the filling pipeline (5) is formed by connecting a plurality of steel pipes, and the annular flowmeter (6) is connected between the adjacent steel pipes; the filling pipeline (5) is arranged in the air return roadway, and the coal wall grouting drill hole (8) is connected with the filling pipeline (5) through the three-way pipe (7).
6. The fluidized gangue local adjacent surface subsequent filling system as claimed in claim 1, wherein the drill hole radius r of the coal wall grouting drill hole (8)0The depth of the coal wall grouting drill hole (8) is 0.1-0.2 m, the depth of the coal wall grouting drill hole is the width of the coal pillar, and the depth is 3-10 m.
7. The fluidized gangue layer adjacent subsequent filling system as claimed in claim 1 or 6, wherein the number of the coal wall grouting drill holes (8) is not less than one, and when the number of the coal wall grouting drill holes (8) is more than 1, the distance L between the adjacent coal wall grouting drill holes (8) is 2 times of slurry diffusion radius, and the calculation formula is as follows:
in the formula, P0Is grouting pressure, MPa; t represents grouting time, s; b is the crack opening degree, mm; r is0Is the borehole radius, m; mu is dynamic viscosity of slurry, N.s/m2。
8. The fluidized gangue local-level adjacent subsequent filling system as claimed in claim 1, wherein the goaf filling system further comprises a high-pressure valve (9) and a pipe orifice pressure gauge (10), the high-pressure valve (9) and the pipe orifice pressure gauge (10) are arranged in front of each coal wall grouting drill hole (8), and grouting time is controlled according to pipe orifice pressure.
9. The filling method of the fluidized gangue local-level adjacent subsequent filling system according to claim 1, which is characterized by comprising the following steps:
(1) waste rock in the waste rock bin and water in the reservoir are stirred by a stirrer (3) to prepare slurry;
(2) the slurry is pumped into a filling pipeline (5) through a filling pump (4) and is conveyed to a filling area;
(3) and slurry in the filling pipeline (5) fills the goaf through the coal wall grouting drill hole (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707624.7A CN113339058A (en) | 2021-06-24 | 2021-06-24 | Fluidized gangue layer adjacent surface subsequent filling system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707624.7A CN113339058A (en) | 2021-06-24 | 2021-06-24 | Fluidized gangue layer adjacent surface subsequent filling system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339058A true CN113339058A (en) | 2021-09-03 |
Family
ID=77478544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110707624.7A Pending CN113339058A (en) | 2021-06-24 | 2021-06-24 | Fluidized gangue layer adjacent surface subsequent filling system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113339058A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199328A (en) * | 2022-07-25 | 2022-10-18 | 中国矿业大学 | Coal mining subsequent space gangue grouting filling engineering design method |
| CN115203852A (en) * | 2022-07-25 | 2022-10-18 | 中国矿业大学 | Method for determining grouting time of coal mining subsequent space gangue |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201606111U (en) * | 2009-12-28 | 2010-10-13 | 三一重型装备有限公司 | Crushing, pumping and filling system under gangue mine |
| CN102061938A (en) * | 2010-12-10 | 2011-05-18 | 天地科技股份有限公司 | Filling process for recovering coal pillars by filling goaf with paste |
| CN106545296A (en) * | 2016-12-02 | 2017-03-29 | 淮北矿业股份有限公司 | A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage |
| CN111894666A (en) * | 2020-07-06 | 2020-11-06 | 中煤能源研究院有限责任公司 | Coal mine underground selective grinding pump-charging integrated gangue slurry filling system and method |
| CN112377221A (en) * | 2020-10-30 | 2021-02-19 | 中煤科工集团西安研究院有限公司 | Method for inhibiting development of water guide crack belt by grouting before mining and building key layer of structure |
| CN212568764U (en) * | 2020-03-10 | 2021-02-19 | 北京市政路桥股份有限公司 | Induced grouting experimental model for saturated fine sand layer |
| CN112796829A (en) * | 2021-03-30 | 2021-05-14 | 陕西煤业化工技术研究院有限责任公司 | Underground original gangue filling system and method for caving area of fully mechanized caving face |
-
2021
- 2021-06-24 CN CN202110707624.7A patent/CN113339058A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201606111U (en) * | 2009-12-28 | 2010-10-13 | 三一重型装备有限公司 | Crushing, pumping and filling system under gangue mine |
| CN102061938A (en) * | 2010-12-10 | 2011-05-18 | 天地科技股份有限公司 | Filling process for recovering coal pillars by filling goaf with paste |
| CN106545296A (en) * | 2016-12-02 | 2017-03-29 | 淮北矿业股份有限公司 | A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage |
| CN212568764U (en) * | 2020-03-10 | 2021-02-19 | 北京市政路桥股份有限公司 | Induced grouting experimental model for saturated fine sand layer |
| CN111894666A (en) * | 2020-07-06 | 2020-11-06 | 中煤能源研究院有限责任公司 | Coal mine underground selective grinding pump-charging integrated gangue slurry filling system and method |
| CN112377221A (en) * | 2020-10-30 | 2021-02-19 | 中煤科工集团西安研究院有限公司 | Method for inhibiting development of water guide crack belt by grouting before mining and building key layer of structure |
| CN112796829A (en) * | 2021-03-30 | 2021-05-14 | 陕西煤业化工技术研究院有限责任公司 | Underground original gangue filling system and method for caving area of fully mechanized caving face |
Non-Patent Citations (2)
| Title |
|---|
| 查文华;黄嵘;华心祝;: "许疃矿7_2煤工作面破碎顶板超前预注浆加固控制技术研究", 煤炭工程, no. 09, pages 186 - 194 * |
| 王成真;冯光明;: "超高水材料覆岩离层及冒落裂隙带注浆充填技术", 煤炭科学技术, no. 03 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199328A (en) * | 2022-07-25 | 2022-10-18 | 中国矿业大学 | Coal mining subsequent space gangue grouting filling engineering design method |
| CN115203852A (en) * | 2022-07-25 | 2022-10-18 | 中国矿业大学 | Method for determining grouting time of coal mining subsequent space gangue |
| CN115203852B (en) * | 2022-07-25 | 2024-05-14 | 中国矿业大学 | Method for determining grouting time of space gangue after coal mining |
| CN115199328B (en) * | 2022-07-25 | 2024-05-28 | 中国矿业大学 | Design method for grouting filling engineering of space gangue after coal mining |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021068691A1 (en) | Strong-weak-strong clean mining and full filling method for coal mine | |
| CN102705005B (en) | Technology for plugging water bursting in mine by directional diversion grouting | |
| CN110318674B (en) | Method for preventing outburst caused by cracking of roadway roof | |
| CN105464700B (en) | Fully mechanized mining filling mixed mining working face filling segment length determines method | |
| CN107740701A (en) | A kind of method of the accurate grout transformation of top plate thin layer limestone aquifer | |
| CN102587859A (en) | Technology for blocking mine water bursting through backflow grouting | |
| CN101021162A (en) | Overlying strata separation layer grouting filling device and grouting filling system | |
| CN111075478A (en) | Pre-grouting reinforcement process for ground construction of broken belt of excavation working face structure | |
| CN111042831A (en) | Grouting reinforcement transformation method for coal seam floor limestone confined aquifer | |
| CN113339058A (en) | Fluidized gangue layer adjacent surface subsequent filling system and method | |
| CN102877857A (en) | Deep hole pre-grouting top plate reinforcement method for large-mining height working face under special geological conditions | |
| CN114472462B (en) | Underground-aboveground linkage coal gangue disposal system and disposal method | |
| CN1032378A (en) | Slow down the method and the facilities and equipments thereof of bank surface subsidence | |
| CN105507947A (en) | Networked gangue filling method | |
| CN113460562B (en) | Method for sealing and storing coal-electricity fly ash in abandoned coal mining space | |
| CN102562069B (en) | The fluid-filled replacement exploitation in coal seam method on high artesian body | |
| CN114033483A (en) | Construction method suitable for collapse pit tailing filling process | |
| CN107975044A (en) | A kind of method that Caving Method with Large Space mine is backfilled using tailing surface subsidence hole | |
| CN113339057A (en) | Fluidized gangue layer-crossing subsequent filling coal mining system and method | |
| Akhmedov et al. | Construction of vertical drainage wells using corrosion resistant materials | |
| CN106088107B (en) | A kind of tailings impoundment is in the method in Caving Method with Large Space production mine surface subsidence hole | |
| CN111978018A (en) | Size and form control method for high-concentration slurry filling pier column in cavity type goaf | |
| CN202467923U (en) | Continuous stirring and filling device for preparing mining paste by utilizing building wastes | |
| CN109555559A (en) | A kind of metal mine km grade interior shaft water control technique method | |
| CN112963199A (en) | Mine underground water regulation and storage method and regulation and storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |