CN114230292A - Slurry for coal-rock mass reinforcement and preparation method thereof - Google Patents
Slurry for coal-rock mass reinforcement and preparation method thereof Download PDFInfo
- Publication number
- CN114230292A CN114230292A CN202111392810.2A CN202111392810A CN114230292A CN 114230292 A CN114230292 A CN 114230292A CN 202111392810 A CN202111392810 A CN 202111392810A CN 114230292 A CN114230292 A CN 114230292A
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- China
- Prior art keywords
- coal
- slurry
- rock mass
- parts
- water reducing
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/42—Glass
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/08—Fiber-containing well treatment fluids
Abstract
The invention provides slurry for coal and rock mass reinforcement and a preparation method thereof, wherein the slurry is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.1-0.8 part of glass fiber; 1-5 parts of polyethylene glycol; 10-18 parts of carboxylic styrene-butadiene latex; 1-3 parts of a defoaming agent; 0.5-1 part of water reducing agent; 100 portions and 150 portions of concrete water. The slurry for reinforcing the coal and rock mass is added with the glass fiber, so that the compressive strength of a solidified body is improved, the physical property is excellent, and the index requirements of AQ 1089-.
Description
Technical Field
The invention belongs to the technical field of coal-rock mass reinforcement, and particularly relates to slurry for coal-rock mass reinforcement and a preparation method 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. When the coal seam is far from the ground surface, a tunnel is usually dug to the underground, so that the coal is a mineworker coal mine. When the coal seam is very close to the earth surface, the coal is generally excavated by directly stripping the earth surface, which is an open pit coal mine. The vast majority of coal mines in China belong to underground coal mines. Coal mines encompass a large area above ground and below ground as well as associated facilities. Coal mines are reasonable spaces excavated by humans when excavating geological formations rich in coal and generally include roadways, wells, and mining surfaces, among others.
With the emphasis on coal mine safety in China, how to reduce coal mine safety accidents is the central importance of safety management, wherein roof collapse accidents are the most common and most easily-occurring accidents in coal mines. The roof fall accident is that the roof rock layer on the coal seam loses support along with the mining of the working face, the original pressure balance is damaged, and the roof of the coal seam deforms and is damaged under the action of the overlying rock layer pressure. In order to prevent roof collapse accidents, grouting engineering is generally adopted to reinforce, prevent seepage and stop leakage, improve the mechanical strength and deformation modulus of the rock-soil (coal) layer and strengthen the integrity of the rock-soil (coal) layer.
Disclosure of Invention
In view of the above, the invention provides a slurry for coal-rock mass reinforcement and a preparation method thereof, aiming at overcoming the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass:
preferably, the slurry for reinforcing the coal rock mass is prepared from the following raw materials in parts by mass:
preferably, the grade of the sulphoaluminate cement is 42.5 or 52.5, and the granularity is 150 meshes to 500 meshes.
Preferably, the glass fiber has a diameter of 10 to 30 μm and a length of 10 to 25 mm.
Preferably, the water reducing agent is a naphthalene series concrete water reducing agent, and the water reducing rate is 15-25%.
The invention also provides a preparation method of the slurry for coal rock mass reinforcement, which comprises the following steps:
(1) mixing sulphoaluminate cement and a water reducing agent uniformly, adding glass fiber, polyethylene glycol, a defoaming agent and concrete water in sequence, and stirring uniformly to obtain a mixture;
(2) adding the carboxylic styrene-butadiene latex into the mixture, and uniformly mixing and stirring to obtain the modified styrene-butadiene rubber.
The invention also provides a method for reinforcing coal rock mass by applying the slurry for reinforcing coal rock mass, which comprises the following steps:
(1) punching a part needing to be filled in the coal rock mass;
(2) filling the slurry into the holes punched in the step (1), and sealing the holes after curing for 60-300 min;
(3) repeating the steps (1) and (2) to punch and fill slurry at all positions needing to be reinforced in the coal rock mass;
(4) and after the construction is finished, closing the equipment and cleaning the site.
Compared with the prior art, the invention has the following advantages:
(1) the glass fiber is added into the slurry for reinforcing the coal and rock mass, so that the compressive strength of a solidified body is improved, the physical property is excellent, and the index requirements of AQ 1089-.
(2) The slurry is injected into holes to be filled, can be combined with coal rock masses into a whole with high-rise strength, can improve the stability of the coal rock masses in the coal mining process, and reduces the occurrence of safety accidents such as roof fall and the like.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
In the examples, the raw materials are as follows:
the grade of the sulphoaluminate cement is 52.5, and the granularity is 300 meshes;
the diameter of the glass fiber is 20 μm, and the length is 25 mm;
the defoaming agent is polyether defoaming agent;
the water reducing agent is a naphthalene series concrete water reducing agent, and the water reducing rate is 20%.
The invention will be described in detail with reference to the following examples.
Example 1
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.3 part of glass fiber; 3 parts of polyethylene glycol; 12 parts of carboxylic styrene-butadiene latex; 1 part of a defoaming agent; 0.8 part of a water reducing agent; 150 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement specifically comprises the following steps:
(1) mixing sulphoaluminate cement and a water reducing agent uniformly, adding glass fiber, polyethylene glycol, a defoaming agent and concrete water in sequence, and stirring uniformly to obtain a mixture;
(2) adding the carboxylic styrene-butadiene latex into the mixture, and uniformly mixing and stirring to obtain the modified styrene-butadiene rubber.
Example 2
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.5 part of glass fiber; 1 part of polyethylene glycol; 10 parts of carboxylic styrene-butadiene latex; 2 parts of a defoaming agent; 0.5 part of a water reducing agent; 110 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement is the same as that of example 1.
Example 3
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.8 part of glass fiber; 3 parts of polyethylene glycol; 18 parts of carboxylic styrene-butadiene latex; 2 parts of a defoaming agent; 1 part of a water reducing agent; 130 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement is the same as that of example 1.
Example 4
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.8 part of glass fiber; 5 parts of polyethylene glycol; 15 parts of carboxylic styrene-butadiene latex; 3 parts of a defoaming agent; 0.8 part of a water reducing agent; 130 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement is the same as that of example 1.
Example 5
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.8 part of glass fiber; 5 parts of polyethylene glycol; 18 parts of carboxylic styrene-butadiene latex; 2 parts of a defoaming agent; 0.8 part of a water reducing agent; 150 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement is the same as that of example 1.
Example 6
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.6 part of glass fiber; 5 parts of polyethylene glycol; 18 parts of carboxylic styrene-butadiene latex; 3 parts of a defoaming agent; 0.8 part of a water reducing agent; 100 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement is the same as that of example 1.
Example 7
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.3 part of glass fiber; 5 parts of polyethylene glycol; 18 parts of carboxylic styrene-butadiene latex; 2 parts of a defoaming agent; 0.6 part of a water reducing agent; 140 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement is the same as that of example 1.
Example 8
The slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass: 100 parts of sulphoaluminate cement; 0.8 part of glass fiber; 5 parts of polyethylene glycol; 18 parts of carboxylic styrene-butadiene latex; 2 parts of a defoaming agent; 1 part of a water reducing agent; 1125 parts of concrete water.
The preparation method of the slurry for coal-rock mass reinforcement is the same as that of example 1.
The slurry for reinforcing the coal-rock mass obtained in examples 1 to 8 was used for reinforcing the coal-rock mass by the following methods:
punching holes at adjacent positions of parts needing to be filled in the coal rock mass, and dividing the holes into five groups; filling the slurry into the five groups of holes punched in the step (1), and sealing the holes after curing for 300 min; and after the construction is finished, closing the equipment and cleaning the site. The slurry can be combined with coal rock to form a high-strength whole, has excellent compressive strength, and meets the index requirements of AQ1089-2011 polymer material for reinforcing coal rock in coal mines.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (7)
1. The slurry for reinforcing the coal rock mass is characterized in that: the composite material is prepared from the following raw materials in parts by mass:
2. the slurry for coal-rock mass reinforcement according to claim 1, characterized in that: the slurry for coal rock mass reinforcement is prepared from the following raw materials in parts by mass:
3. the slurry for coal-rock mass reinforcement according to claim 1, characterized in that: the grade of the sulphoaluminate cement is 42.5 or 52.5, and the granularity is 150-500 meshes.
4. The slurry for coal-rock mass reinforcement according to claim 1, characterized in that: the diameter of the glass fiber is 10-30 μm, and the length is 10-25 mm.
5. The slurry for coal-rock mass reinforcement according to claim 1, characterized in that: the water reducing agent is a naphthalene series concrete water reducing agent, and the water reducing rate is more than 30%.
6. The method for preparing the slurry for coal-rock mass reinforcement according to any one of claims 1 to 5, characterized in that: the method specifically comprises the following steps:
(1) mixing sulphoaluminate cement and a water reducing agent uniformly, adding glass fiber, polyethylene glycol, a defoaming agent and concrete water in sequence, and stirring uniformly to obtain a mixture;
(2) adding the carboxylic styrene-butadiene latex into the mixture, and uniformly mixing and stirring to obtain the modified styrene-butadiene rubber.
7. The method for coal rock mass reinforcement using the slurry for coal rock mass reinforcement according to any one of claims 1 to 6 is characterized in that: the method comprises the following steps:
(1) punching a part needing to be filled in the coal rock mass;
(2) filling the slurry into the holes punched in the step (1), and sealing the holes after curing for 60-300 min;
(3) repeating the steps (1) and (2) to punch and fill slurry at all positions needing to be reinforced in the coal rock mass;
(4) and after the construction is finished, closing the equipment and cleaning the site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111392810.2A CN114230292A (en) | 2021-11-23 | 2021-11-23 | Slurry for coal-rock mass reinforcement and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111392810.2A CN114230292A (en) | 2021-11-23 | 2021-11-23 | Slurry for coal-rock mass reinforcement and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114230292A true CN114230292A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111392810.2A Pending CN114230292A (en) | 2021-11-23 | 2021-11-23 | Slurry for coal-rock mass reinforcement and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN114230292A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644800A (en) * | 2005-01-11 | 2005-07-27 | 桂永全 | Bridge paving material with big span |
| CN101691289A (en) * | 2009-10-27 | 2010-04-07 | 北京科技大学 | Coal rock grouting reinforcement material and preparation method thereof |
| CN103626435A (en) * | 2012-08-24 | 2014-03-12 | 山东固安特新材料科技股份有限公司 | Inorganic filling sealing material for coal-rock mass |
| CN109704697A (en) * | 2019-03-15 | 2019-05-03 | 淄博三基建筑工程材料有限公司 | A kind of concrete strengthening grouting material |
| CN111825400A (en) * | 2020-07-20 | 2020-10-27 | 内蒙古博冉科技有限责任公司 | Foaming reinforcing filling material for coal mine and preparation method thereof |
| CN112028580A (en) * | 2020-06-04 | 2020-12-04 | 复旦大学 | Water seepage-proof grouting material for repairing sandstone grotto rock cracks and preparation method thereof |
| CN112551969A (en) * | 2020-11-11 | 2021-03-26 | 北京纽维逊建筑工程技术有限公司 | Polymer modified cement-based grouting material for reinforcing fan foundation and preparation method thereof |
-
2021
- 2021-11-23 CN CN202111392810.2A patent/CN114230292A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644800A (en) * | 2005-01-11 | 2005-07-27 | 桂永全 | Bridge paving material with big span |
| CN101691289A (en) * | 2009-10-27 | 2010-04-07 | 北京科技大学 | Coal rock grouting reinforcement material and preparation method thereof |
| CN103626435A (en) * | 2012-08-24 | 2014-03-12 | 山东固安特新材料科技股份有限公司 | Inorganic filling sealing material for coal-rock mass |
| CN109704697A (en) * | 2019-03-15 | 2019-05-03 | 淄博三基建筑工程材料有限公司 | A kind of concrete strengthening grouting material |
| CN112028580A (en) * | 2020-06-04 | 2020-12-04 | 复旦大学 | Water seepage-proof grouting material for repairing sandstone grotto rock cracks and preparation method thereof |
| CN111825400A (en) * | 2020-07-20 | 2020-10-27 | 内蒙古博冉科技有限责任公司 | Foaming reinforcing filling material for coal mine and preparation method thereof |
| CN112551969A (en) * | 2020-11-11 | 2021-03-26 | 北京纽维逊建筑工程技术有限公司 | Polymer modified cement-based grouting material for reinforcing fan foundation and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 许明标等: "《聚合物在油气田开采中的应用》", 31 January 2010 * |
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Application publication date: 20220325 |