CN112142388A - Novel tunnel plastic spraying material - Google Patents
Novel tunnel plastic spraying material Download PDFInfo
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- CN112142388A CN112142388A CN202010933705.4A CN202010933705A CN112142388A CN 112142388 A CN112142388 A CN 112142388A CN 202010933705 A CN202010933705 A CN 202010933705A CN 112142388 A CN112142388 A CN 112142388A
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- parts
- spraying material
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- steel fiber
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Classifications
-
- 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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
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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
- 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
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
-
- 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
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Lining And Supports For Tunnels (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the technical field of spraying materials, in particular to a novel tunnel plastic spraying material which comprises the following components in percentage by mass: 65-75 parts of plastic concrete, 8-16 parts of steel fiber, 9-21 parts of natural asphalt, 13-18 parts of polypropylene fiber, 6-13 parts of straw fiber, 8-19 parts of inorganic filler, 0.8-2.5 parts of accelerator, 2-3.1 parts of flame retardant, 1.3-2.7 parts of water reducer and 0.2-0.9 part of reducer; the plastic spraying material provided by the invention has the characteristics of high flame retardance, large foaming multiple, good toughness, no deliquescence, no cracking or falling after deformation under mine pressure and good air tightness, is simple to construct and high in efficiency in the application process, and can greatly improve the working efficiency, reduce the comprehensive cost, reduce the dust hazard, reduce the labor intensity of workers and protect the health of constructors compared with the original cement mortar spraying. And the novel plastic spraying material does not need repair and re-spraying in the service period, and the blocking and protecting quality is good, so that the safety and the reliability of a roadway system are ensured.
Description
Technical Field
The invention relates to the technical field of spraying materials, in particular to a novel tunnel plastic spraying material.
Background
Coal-series strata of a coal mine underground roadway are mostly coal rocks, sandstones, shales, mudstones and clay rocks, and not only are the mechanical properties of the rocks poor, but also the joint fractures grow and the stability is poor. Sandstone, sandy shale or argillaceous sandstone with various granularities in the coal mine tunnel surrounding rock are easy to weather, absorb water, soften, even argillization, disintegrate and expand. The underground space of the coal mine is narrow and small, the environment is severe, the coal rock wall is uneven and moist, the water leakage is general, the rock mass deforms after the roadway is excavated, and gas can gush out or overflow in the roadway excavation process. The exposed ends of the metal mesh, the anchor rod and the anchor cable are easy to rust, so that the constraint force on surrounding rocks is reduced. Therefore, the sealing treatment of the surface of the roadway is very important for keeping the stability of the roadway for a long time. Coal spontaneous combustion is one of main natural disasters of mines in China, and in order to solve the fire prevention and extinguishing problems of roadways such as roadways needing long-term service, stoping roadways of gob-side entry driving, gob-side entry retaining of caving coal working faces and the like arranged in coal seams with short spontaneous combustion ignition periods, air insulation materials need to be sprayed on the wall surfaces of the roadways to prevent air leakage of the roadways and reduce the possibility of spontaneous combustion of the coal seams and the goafs.
The materials commonly used for spraying the wall surface of the roadway at present comprise cement single slurry, concrete and polyurethane. The cement single slurry has poor spraying effect and poor application effect due to poor adhesion; the spraying of concrete requires the transportation of a large amount of equipment and materials, is difficult for mines with few tracks, and has high spraying cost and low efficiency; the polyurethane material is inflammable, the requirement on spraying equipment is high, the operation is inconvenient, and cracks are easy to generate after the polyurethane is cured, so that the wind insulation effect is influenced.
Disclosure of Invention
The invention aims to provide a novel tunnel plastic spraying material to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the novel tunnel plastic spraying material comprises the following components in percentage by mass: 65-75 parts of plastic concrete, 8-16 parts of steel fiber, 9-21 parts of natural asphalt, 13-18 parts of polypropylene fiber, 6-13 parts of straw fiber, 8-19 parts of inorganic filler, 0.8-2.5 parts of accelerator, 2-3.1 parts of flame retardant, 1.3-2.7 parts of water reducer and 0.2-0.9 part of reducer.
Preferably, the composition comprises the following components in percentage by mass: 65 parts of plastic concrete, 8 parts of steel fiber, 9 parts of natural asphalt, 13 parts of polypropylene fiber, 6 parts of straw fiber, 8 parts of inorganic filler, 0.8 part of accelerator, 2 parts of flame retardant, 1.3 parts of water reducer and 0.2 part of reducer.
Preferably, the steel fiber is superfine steel fiber made of alloy materials, the length of the steel fiber is 6-12mm, the diameter of the steel fiber is 0.06-0.08mm, and the length-diameter ratio of the steel fiber is 30-45.
Preferably, the plastic concrete comprises 10-20 parts of coarse sand aggregate, 25-35 parts of fine sand aggregate, 50-58 parts of cement, 17-25 parts of clay and 15-30 parts of bentonite.
Preferably, when the plastic concrete is manufactured, the clay and the bentonite are added with a proper amount of water to be prepared into slurry, then the coarse sand aggregate, the fine sand aggregate and the cement are sequentially added to be mixed and stirred, and then other materials are sequentially added to prepare the plastic spraying material.
Preferably, the inorganic filler is prepared by mixing graphite powder, slag powder and natural sand fine particles according to the proportion of 1:4: 5.
Compared with the prior art, the invention has the beneficial effects that: the plastic spraying material provided by the invention has the characteristics of high flame retardance, large foaming multiple, good toughness, no deliquescence, no cracking or falling after deformation under mine pressure and good air tightness, is simple to construct and high in efficiency in the application process, and can greatly improve the working efficiency, reduce the comprehensive cost, reduce the dust hazard, reduce the labor intensity of workers and protect the health of constructors compared with the original cement mortar spraying. And the novel plastic spraying material does not need repair and re-spraying in the service period, and the blocking and protecting quality is good, so that the safety and the reliability of a roadway system are ensured.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Example 1: the novel tunnel plastic spraying material comprises the following components in percentage by mass: 65-75 parts of plastic concrete, 8-16 parts of steel fiber, 9-21 parts of natural asphalt, 13-18 parts of polypropylene fiber, 6-13 parts of straw fiber, 8-19 parts of inorganic filler, 0.8-2.5 parts of accelerator, 2-3.1 parts of flame retardant, 1.3-2.7 parts of water reducer and 0.2-0.9 part of reducer.
Further, the paint comprises the following components in percentage by mass: 65 parts of plastic concrete, 8 parts of steel fiber, 9 parts of natural asphalt, 13 parts of polypropylene fiber, 6 parts of straw fiber, 8 parts of inorganic filler, 0.8 part of accelerator, 2 parts of flame retardant, 1.3 parts of water reducer and 0.2 part of reducer.
Further, the steel fiber is superfine steel fiber made of alloy materials, the length of the steel fiber is 6-12mm, the diameter of the steel fiber is 0.06-0.08mm, and the length-diameter ratio of the steel fiber is 30-45.
Further, the plastic concrete comprises 10 parts of coarse sand aggregate, 25 parts of fine sand aggregate, 50 parts of cement, 17 parts of clay and 15 parts of bentonite.
Furthermore, when the plastic concrete is manufactured, clay and bentonite are added with a proper amount of water to be prepared into slurry, then coarse sand aggregate, fine sand aggregate and cement are sequentially added to be mixed and stirred, and other materials are sequentially added to prepare the plastic spraying material.
Further, the inorganic filler is prepared by mixing graphite powder, slag powder and natural sand fine particles according to the proportion of 1:4: 5.
Example 2: the novel tunnel plastic spraying material comprises the following components in percentage by mass: 65-75 parts of plastic concrete, 8-16 parts of steel fiber, 9-21 parts of natural asphalt, 13-18 parts of polypropylene fiber, 6-13 parts of straw fiber, 8-19 parts of inorganic filler, 0.8-2.5 parts of accelerator, 2-3.1 parts of flame retardant, 1.3-2.7 parts of water reducer and 0.2-0.9 part of reducer.
Further, the paint comprises the following components in percentage by mass: 70 parts of plastic concrete, 12 parts of steel fiber, 15 parts of natural asphalt, 15 parts of polypropylene fiber, 10 parts of straw fiber, 10 parts of inorganic filler, 0.8 part of accelerating agent, 2.8 parts of flame retardant, 1.7 parts of water reducing agent and 0.4 part of reducing agent.
Further, the plastic concrete comprises 12 parts of coarse sand aggregate, 35 parts of fine sand aggregate, 58 parts of cement, 19 parts of clay and 25 parts of bentonite.
Example 2 is the same as the above examples in material and processing steps, but the ratio of the two is different.
Example 3: the novel tunnel plastic spraying material comprises the following components in percentage by mass: 65-75 parts of plastic concrete, 8-16 parts of steel fiber, 9-21 parts of natural asphalt, 13-18 parts of polypropylene fiber, 6-13 parts of straw fiber, 8-19 parts of inorganic filler, 0.8-2.5 parts of accelerator, 2-3.1 parts of flame retardant, 1.3-2.7 parts of water reducer and 0.2-0.9 part of reducer.
Further, the paint comprises the following components in percentage by mass: 75 parts of plastic concrete, 12 parts of steel fiber, 21 parts of natural asphalt, 18 parts of polypropylene fiber, 13 parts of straw fiber, 12 parts of inorganic filler, 2.3 parts of accelerating agent, 2.1 parts of flame retardant, 1.7 parts of water reducing agent and 0.8 part of reducing agent.
Further, the plastic concrete comprises 15 parts of coarse sand aggregate, 38 parts of fine sand aggregate, 58 parts of cement, 121 parts of clay and 19 parts of bentonite.
Example 3 is the same as the above examples in material and processing steps, but the ratio of the two is different.
The plastic spraying material prepared by mixing the materials according to the proportion in the embodiments 1-3 is respectively sprayed on the surfaces of three blocks divided from the same area in the same roadway, and the compression strength, the tensile strength, the flame retardant grade, the elongation at break and the like of the plastic spraying material are tested after the spraying is finished, and the results are shown in the following table:
| examples | Compressive strength/MPa | Tensile strength/MPa | Flame retardant rating | Elongation at break/% |
| Example 1 | 97.38 | 8.51 | V-O | 82 |
| Example 2 | 96.22 | 7.99 | V-1 | 87 |
| Example 3 | 96.56 | 7.56 | V-O | 84 |
As can be seen from the table, the plastic spraying material prepared according to the mixture ratio and the preparation method in the embodiment 1 has higher compressive strength, tensile strength and flame retardant rating than the other two embodiments; the elongation at break of the plastic spray material prepared according to the proportion and the preparation method in the embodiment 2 is higher than that of the other two embodiments; the plastic spray material prepared according to the mixture ratio and the preparation method in the embodiment 3 has higher compression strength, tensile strength and flame retardant grade than the plastic spray material prepared in the embodiment 1 and lower flame retardant grade than the plastic spray material prepared in the embodiment 2.
The plastic spraying material provided by the invention has the characteristics of high flame retardance, large foaming multiple, good toughness, no deliquescence, no cracking or falling after deformation under mine pressure and good air tightness, is simple to construct and high in efficiency in the application process, and can greatly improve the working efficiency, reduce the comprehensive cost, reduce the dust hazard, reduce the labor intensity of workers and protect the health of constructors compared with the original cement mortar spraying. And the novel plastic spraying material does not need repair and re-spraying in the service period, and the blocking and protecting quality is good, so that the safety and the reliability of a roadway system are ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a novel tunnel plastics spraying material which characterized in that: the composite material comprises the following components in percentage by mass: 65-75 parts of plastic concrete, 8-16 parts of steel fiber, 9-21 parts of natural asphalt, 13-18 parts of polypropylene fiber, 6-13 parts of straw fiber, 8-19 parts of inorganic filler, 0.8-2.5 parts of accelerator, 2-3.1 parts of flame retardant, 1.3-2.7 parts of water reducer and 0.2-0.9 part of reducer.
2. The novel tunnel plastic spraying material as claimed in claim 1, characterized in that: the composite material comprises the following components in percentage by mass: 65 parts of plastic concrete, 8 parts of steel fiber, 9 parts of natural asphalt, 13 parts of polypropylene fiber, 6 parts of straw fiber, 8 parts of inorganic filler, 0.8 part of accelerator, 2 parts of flame retardant, 1.3 parts of water reducer and 0.2 part of reducer.
3. The novel tunnel plastic spraying material as claimed in claim 1, characterized in that: the steel fiber is an ultrafine steel fiber made of alloy materials, the length of the ultrafine steel fiber is 6-12mm, the diameter of the ultrafine steel fiber is 0.06-0.08mm, and the length-diameter ratio of the ultrafine steel fiber is 30-45.
4. The novel tunnel plastic spraying material as claimed in claim 1, characterized in that: the plastic concrete comprises 10-20 parts of coarse sand aggregate, 25-35 parts of fine sand aggregate, 50-58 parts of cement, 17-25 parts of clay and 15-30 parts of bentonite.
5. The novel tunnel plastic spraying material as claimed in claim 4, characterized in that: when the plastic concrete is manufactured, clay and bentonite are added with a proper amount of water to prepare slurry, then coarse sand aggregate, fine sand aggregate and cement are sequentially added to be mixed and stirred, and other materials are sequentially added to prepare the plastic spraying material.
6. The novel tunnel plastic spraying material as claimed in claim 1, characterized in that: the inorganic filler is prepared by mixing graphite powder, slag powder and natural sand fine particles according to the proportion of 1:4: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933705.4A CN112142388A (en) | 2020-09-08 | 2020-09-08 | Novel tunnel plastic spraying material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933705.4A CN112142388A (en) | 2020-09-08 | 2020-09-08 | Novel tunnel plastic spraying material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112142388A true CN112142388A (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010933705.4A Pending CN112142388A (en) | 2020-09-08 | 2020-09-08 | Novel tunnel plastic spraying material |
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| Country | Link |
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| CN (1) | CN112142388A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540395A (en) * | 2019-09-26 | 2019-12-06 | 张园月 | Spraying material for coal mine underground roadway and preparation method |
| CN111533518A (en) * | 2020-05-09 | 2020-08-14 | 赣州创可通科技有限公司 | Flexible spraying material for mine roadway support and preparation method and application thereof |
| CN111533519A (en) * | 2020-05-09 | 2020-08-14 | 赣州创可通科技有限公司 | Flexible spraying material for tunnel roadway support and preparation method and application thereof |
-
2020
- 2020-09-08 CN CN202010933705.4A patent/CN112142388A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540395A (en) * | 2019-09-26 | 2019-12-06 | 张园月 | Spraying material for coal mine underground roadway and preparation method |
| CN111533518A (en) * | 2020-05-09 | 2020-08-14 | 赣州创可通科技有限公司 | Flexible spraying material for mine roadway support and preparation method and application thereof |
| CN111533519A (en) * | 2020-05-09 | 2020-08-14 | 赣州创可通科技有限公司 | Flexible spraying material for tunnel roadway support and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 潘全祥 等: "《施工现场十大员技术管理手册 机械员 第2版》", 31 July 2005, 中国建筑工业出版社 * |
| 赵勇 等: "《中国高速铁路隧道》", 31 October 2016, 中国铁道出版社 * |
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Application publication date: 20201229 |
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