CN114262177A - Early-strength mining sealing material - Google Patents
Early-strength mining sealing material Download PDFInfo
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- CN114262177A CN114262177A CN202111460954.7A CN202111460954A CN114262177A CN 114262177 A CN114262177 A CN 114262177A CN 202111460954 A CN202111460954 A CN 202111460954A CN 114262177 A CN114262177 A CN 114262177A
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- 239000003566 sealing material Substances 0.000 title claims abstract description 37
- 238000005065 mining Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000004568 cement Substances 0.000 claims abstract description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 9
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 4
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 4
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 claims description 2
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 claims description 2
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 claims description 2
- 229920000877 Melamine resin Polymers 0.000 claims 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims 1
- 239000012812 sealant material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000005422 blasting Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 33
- 239000003638 chemical reducing agent Substances 0.000 description 22
- 238000007789 sealing Methods 0.000 description 15
- 238000002360 preparation method Methods 0.000 description 8
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 description 7
- 239000003245 coal Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WPJGWJITSIEFRP-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine;hydrate Chemical compound O.NC1=NC(N)=NC(N)=N1 WPJGWJITSIEFRP-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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- Sealing Material Composition (AREA)
Abstract
The application relates to the technical field of sealing materials, in particular to an early-strength mining sealing material which comprises the following components in parts by weight: 0.2-0.4 part of nano early strength component, 0-0.6 part of organic early strength component, 0.05-0.15 part of water reducing component, 40-45 parts of water and 100 parts of cement. The sealing material provided by the invention has an outstanding early strength effect, better meets the requirement that the working performance of the sealing material is not influenced under the condition of improving the early strength of the sealing material, has good pumping performance, can be prepared and applied in an underground field, is convenient and quick, and completely meets the use requirements of mine gas extraction and deep hole blasting.
Description
Technical Field
The invention relates to the technical field of sealing materials, in particular to an early-strength mining sealing material.
Background
Coal is a main energy source in China, however, various disaster accidents are often caused in the process of mining, and gas outburst is the most outstanding problem, and the safety mining of coal mines is severely restricted. The drilling extraction is a basic means for coal mine gas control, the drilling needs to be sealed after the drilling is finished by the technology, the hole sealing effect of hole sealing materials is particularly important, and the gas drainage effect is seriously influenced.
At present, the direct hole sealing technology for measuring the gas pressure of a coal seam and extracting a drilled hole adopts organic materials or inorganic materials for sealing, and comprises the steps of clay manual sealing, mechanical water injection mortar sealing and foaming polymer material sealing. The clay hole sealing method is short in hole sealing length, yellow mud can become soft when meeting water, and the strength cannot meet the hole sealing requirement; the mechanical water injection mortar hole sealing cement has the defects of low setting speed, large volume self-shrinkage, serious water bleeding phenomenon, complex coal mine environment and increasingly deepened mining depth, and the cement-based hole sealing material can cause that the early strength can not meet the requirements of coal bed permeability increase and gas extraction due to the underground high-temperature, high-humidity and high-corrosivity environment.
Chinese patent CN107118560A discloses "a method for preparing a sealing and filling material for coal mines", which comprises treating organic silicon resin and carbon black, ball-milling with sodium silicate, metakaolin, etc., and stirring with an auxiliary agent to obtain a sealing material with high expansion multiple and short setting time, and has good flame retardant property and good application effect, but the early strength is not large enough, and the 7d compressive strength reaches 8.4MPa, which cannot meet the strength required by mine sealing. Chinese patent CN107011881A discloses a mining coal dust-based hole sealing grouting material and a hole sealing preparation process, wherein coal dust is mixed with substances such as urea-formaldehyde resin, oxalic acid, silicon powder, hydroxypropyl methyl cellulose, a coupling agent, calcium carbonate and the like, the product has short coagulation time and low cost, the drilling stability is improved, the resource recovery rate is improved, and organic substances such as urea-formaldehyde resin and the like contain toxicity, are harmful to the health of operators and are harmful to the environment.
Disclosure of Invention
The invention aims to provide an early strength type mining sealing material which can achieve higher compressive strength in a very short time and improve the hole sealing quality.
In order to achieve the purpose, the invention adopts the technical scheme that: the early-strength mining sealing material comprises the following components in parts by weight: 0.2-0.4 part of nano early strength component, 0-0.6 part of organic early strength component, 0.05-0.15 part of water reducing component, 40-45 parts of water and 100 parts of cement.
Preferably, the nano early strength component is nano SiC.
Preferably, the organic early-strength component is one or more of polyvinyl alcohol and polyvinylpyrrolidone.
Preferably, the water reducing component is one or more of 2-acrylamide-2-methylpropanesulfonic acid, naphthalenesulfonic acid-based water reducing agent, polycarboxylic acid-based water reducing agent and melamine water reducing agent.
A preparation method of an early strength mining sealing material comprises the following steps:
s1: stirring the organic early strength component and water at room temperature for 5-15min at constant speed to completely dissolve the organic early strength component;
s2: adding the nano SiC into the organic early strength component aqueous solution, and stirring at a constant speed for 15 min;
s3: pre-stirring the rest water and cement for 2-3 min;
s4: adding the product of S2 into the product of S3, and stirring at constant speed for 5-6 min.
Further, the stirring speeds of S1, S2, S3 and S4 are all 150-200 r/min.
The invention has the following technical effects:
1. the early-strength mining sealing material provided by the invention has an outstanding early-strength effect, the 1-day compressive strength is 15.441MPa, the 3-day compressive strength is 26.091MPa, and the setting time is less than 500min, so that the requirement that the working performance of the sealing material is not influenced under the condition of improving the early strength of the sealing material is better met, the sealing material has good pumping performance and short setting time, can be prepared and applied in an underground field, is convenient and quick, and completely meets the use requirements of mine gas extraction and deep hole blasting.
2. The early strength is improved, the supporting effect of the hole sealing material on the drilled hole is improved, and meanwhile, all the component materials of the material are sourced from commercially available materials, so that the material is wide in source, low in price, environment-friendly and pollution-free.
Drawings
Without attached figure
Detailed Description
The technical solutions in the embodiments of the present invention will be 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.
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
An early strength mining sealing material comprises the following components by weight: 0.2 part of nano early strength component, 0 part of organic early strength component, 0.15 part of water reducing component, 40 parts of water and 100 parts of cement.
The nanometer early strength component is nanometer SiC.
The water reducing component comprises 2-acrylamide-2-methylpropanesulfonic acid and a polycarboxylic acid water reducing agent.
A preparation method of an early-strength mining sealing material comprises the following steps:
s1: uniformly stirring the water reducing agent and water at room temperature for 3min to completely dissolve the water reducing agent and the water, wherein the stirring speed is 150 r/min;
s2: pre-stirring the rest water and cement for 2min at the stirring speed of 150 r/min;
s3: and (3) sequentially adding the water reducing agent and the nano early strength agent dissolved in the S1 into the S2, and stirring at a constant speed for 5min to obtain the water reducing agent.
Example 2
An early strength mining sealing material comprises the following components by weight: 0.3 part of nano early strength component, 0 part of organic early strength component, 0.15 part of water reducing component, 40 parts of water and 100 parts of cement.
The nano early strength component is nano SiC
The water reducing component comprises 2-acrylamide-2-methylpropanesulfonic acid and a polycarboxylic acid water reducing agent.
A preparation method of an early-strength mining sealing material comprises the following steps:
s1: uniformly stirring the water reducing agent and water at room temperature for 3min to completely dissolve the water reducing agent and the water, wherein the stirring speed is 150 r/min;
s2: pre-stirring the rest water and cement for 2min at the stirring speed of 150 r/min;
s3: and (3) sequentially adding the water reducing agent and the nano early strength agent dissolved in the S1 into the S2, and stirring at a constant speed for 5min to obtain the water reducing agent.
Example 3
An early strength mining sealing material comprises the following components by weight: 0.4 part of nano early strength component, 0 part of organic matter early strength component, 0.15 part of water reducing component, 40 parts of water and 100 parts of cement.
The nanometer early strength component is nanometer SiC.
The water reducing component comprises 2-acrylamide-2-methylpropanesulfonic acid and a polycarboxylic acid water reducing agent.
A preparation method of an early-strength mining sealing material comprises the following steps:
s1: uniformly stirring the water reducing agent and water at room temperature for 3min to completely dissolve the water reducing agent and the water, wherein the stirring speed is 150 r/min;
s2: pre-stirring the rest water and cement for 2min at the stirring speed of 150 r/min;
s3: and (3) sequentially adding the water reducing agent and the nano early strength agent dissolved in the S1 into the S2, and stirring at a constant speed for 5min to obtain the water reducing agent.
Example 4
An early strength mining sealing material comprises the following components by weight: 0.3 part of nano early strength component, 0.2 part of organic early strength component, 0.15 part of water reducing component, 40 parts of water and 100 parts of cement.
The nanometer early strength component is nanometer SiC.
The organic early strength component is polyvinyl alcohol.
The water reducing component comprises 2-acrylamide-2-methylpropanesulfonic acid and a polycarboxylic acid water reducing agent.
A preparation method of an early-strength mining sealing material comprises the following steps:
s1: uniformly stirring polyvinyl alcohol and water at room temperature for 5-15min to completely dissolve the polyvinyl alcohol;
s2: adding the nano SiC into a polyvinyl alcohol aqueous solution, and stirring at a constant speed for 15 min;
s3: pre-stirring the rest water and cement for 2-3 min;
s4: adding S2 into S3, and stirring at constant speed for 5-6 min.
Example 5
An early strength mining sealing material comprises the following components by weight: 0.3 part of nano early strength component, 0.4 part of organic matter early strength component, 0.15 part of water reducing component, 40 parts of water and 100 parts of cement.
The nanometer early strength component is nanometer SiC.
The organic early strength component is polyvinylpyrrolidone.
The water reducing component comprises 2-acrylamide-2-methylpropanesulfonic acid and a polycarboxylic acid water reducing agent.
A preparation method of an early-strength mining sealing material comprises the following steps:
s1: uniformly stirring polyvinyl alcohol and water at room temperature for 5-15min to completely dissolve the polyvinyl alcohol;
s2: adding the nano SiC into a polyvinyl alcohol aqueous solution, and stirring at a constant speed for 15 min;
s3: pre-stirring the rest water and cement for 2-3 min;
s4: adding S2 into S3, and stirring at constant speed for 5-6 min.
Example 6
An early strength mining sealing material comprises the following components by weight: 0.3 part of nano early strength component, 0.6 part of organic early strength component, 0.15 part of water reducing component, 40 parts of water and 100 parts of cement.
The nanometer early strength component is nanometer SiC.
The organic early-strength component is a mixture of polyvinyl alcohol and polyvinylpyrrolidone.
The water reducing component comprises 2-acrylamide-2-methylpropanesulfonic acid and a polycarboxylic acid water reducing agent.
A preparation method of an early-strength mining sealing material comprises the following steps:
s1: uniformly stirring polyvinyl alcohol and water at room temperature for 5-15min to completely dissolve the polyvinyl alcohol;
s2: adding the nano SiC into a polyvinyl alcohol aqueous solution, and stirring at a constant speed for 15 min;
s3: pre-stirring the rest water and cement for 2-3 min;
s4: adding S2 into S3, and stirring at constant speed for 5-6 min.
Product performance test
The reference group is not added with the nanometer early strength component and the organic early strength component, and other components are the same as the embodiment;
the performance tests were carried out on the early strength type mining sealing materials prepared in examples 1 to 6 and a reference group to which only 0.15% of 2-acrylamido-2-methylpropanesulfonic acid and 0.15% of a polycarboxylic acid-based water reducing agent were added, and the results are shown in Table 1.
TABLE 1 test results
As is clear from Table 1, the sealing materials obtained in examples 1 to 6 were able to set faster with a slightly shorter setting time than the reference group, and the compressive strengths of the experimental groups 1d, 3d and 7d were all significantly improved. Compared with the single-doped nano SiC (examples 1, 2 and 3) and the doped nano SiC/polyvinyl alcohol composite component (examples 4, 5 and 6), the early strength performance of the single-doped nano SiC and the doped nano SiC/polyvinyl alcohol composite component is better, and the compressive strength of the 1d, the 3d and the 7d is 15.441MPa, 26.091MPa and 34.273MPa respectively, and is improved by 115.45%, 50.33% and 24.39% compared with the same-age benchmark group.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The early-strength mining sealing material comprises the following components in parts by weight: 0.2-0.4 part of nano early strength component, 0-0.6 part of organic early strength component, 0.05-0.15 part of water reducing component, 40-45 parts of water and 100 parts of cement.
2. The early strength mining sealing material of claim 1, wherein the nano early strength component is nano SiC.
3. The early strength mining sealing material of claim 1, wherein the organic early strength component is one or more of polyvinyl alcohol and polyvinylpyrrolidone.
4. The early strength mining sealant material of claim 1, wherein the water reducing component is one or more of 2-acrylamido-2-methylpropanesulfonic acid, naphthalenesulfonic acid, polycarboxylic acid, and melamine superplasticizers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460954.7A CN114262177A (en) | 2021-12-01 | 2021-12-01 | Early-strength mining sealing material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460954.7A CN114262177A (en) | 2021-12-01 | 2021-12-01 | Early-strength mining sealing material |
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| CN114262177A true CN114262177A (en) | 2022-04-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651905A (en) * | 2017-09-07 | 2018-02-02 | 安徽理工大学 | A kind of morning expands by force delaying type sealing material |
| CN108947351A (en) * | 2018-08-08 | 2018-12-07 | 安徽理工大学 | Early-strength mineral seal material |
| CN109880604A (en) * | 2019-02-18 | 2019-06-14 | 天津中油渤星工程科技有限公司 | A kind of oil-well cement solidifying type early strength agent of weak rush |
| CN110885221A (en) * | 2019-11-22 | 2020-03-17 | 安徽春雨安全科技有限公司 | Mining sealing material with early strength and high fluidity and use method |
| CN113213877A (en) * | 2021-06-03 | 2021-08-06 | 厦门美益建材有限公司 | Low-temperature cement and preparation method thereof |
-
2021
- 2021-12-01 CN CN202111460954.7A patent/CN114262177A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651905A (en) * | 2017-09-07 | 2018-02-02 | 安徽理工大学 | A kind of morning expands by force delaying type sealing material |
| CN108947351A (en) * | 2018-08-08 | 2018-12-07 | 安徽理工大学 | Early-strength mineral seal material |
| CN109880604A (en) * | 2019-02-18 | 2019-06-14 | 天津中油渤星工程科技有限公司 | A kind of oil-well cement solidifying type early strength agent of weak rush |
| CN110885221A (en) * | 2019-11-22 | 2020-03-17 | 安徽春雨安全科技有限公司 | Mining sealing material with early strength and high fluidity and use method |
| CN113213877A (en) * | 2021-06-03 | 2021-08-06 | 厦门美益建材有限公司 | Low-temperature cement and preparation method thereof |
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Application publication date: 20220401 |