CN102492405B - Grouting material for reinforcing fragmentized coal body - Google Patents
Grouting material for reinforcing fragmentized coal body Download PDFInfo
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- CN102492405B CN102492405B CN201110376459.8A CN201110376459A CN102492405B CN 102492405 B CN102492405 B CN 102492405B CN 201110376459 A CN201110376459 A CN 201110376459A CN 102492405 B CN102492405 B CN 102492405B
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- mass concentration
- urea
- silicon
- formaldehyde resin
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- Expired - Fee Related
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- 239000003245 coal Substances 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 12
- 229920001807 Urea-formaldehyde Polymers 0.000 claims abstract description 30
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims description 41
- 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 claims description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 23
- 229910052710 silicon Inorganic materials 0.000 claims description 23
- 239000010703 silicon Substances 0.000 claims description 23
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 15
- 239000001110 calcium chloride Substances 0.000 claims description 15
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 241000237502 Ostreidae Species 0.000 claims description 4
- 235000020636 oyster Nutrition 0.000 claims description 4
- -1 phosphate toluene diphenyl ester Chemical class 0.000 claims 2
- 239000004305 biphenyl Substances 0.000 claims 1
- 235000010290 biphenyl Nutrition 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract description 4
- 229920005591 polysilicon Polymers 0.000 abstract 3
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 abstract 1
- 229910005260 GaCl2 Inorganic materials 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 235000013808 oxidized starch Nutrition 0.000 abstract 1
- 239000001254 oxidized starch Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 239000011435 rock Substances 0.000 description 8
- 238000007569 slipcasting Methods 0.000 description 8
- 239000003292 glue Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- HLLSOEKIMZEGFV-UHFFFAOYSA-N 4-(dibutylsulfamoyl)benzoic acid Chemical group CCCCN(CCCC)S(=O)(=O)C1=CC=C(C(O)=O)C=C1 HLLSOEKIMZEGFV-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- CBOIHMRHGLHBPB-UHFFFAOYSA-N hydroxymethyl Chemical compound O[CH2] CBOIHMRHGLHBPB-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a grouting material for reinforcing a fragmentized coal body. The grouting material is prepared from two kinds of solutions A and B; the solution A is a polysilicon solution, which is prepared by mixing E0-grade environment-friendly urea resin and silica sol according to the weight proportion of 2:1 at the temperature condition of 20-30 DEG C to generate a milk-white polysilicon solution with the mass concentration being 30-45% and then adding 4% of a purpose-made flexibilizer of the polysilicon solution, wherein the E0-grade environment-friendly urea resin has the molar ratio being smaller than 1.5 and the free formaldehyde content being not more than 3mg/100g, and the silica sol has the mass concentration being 30-40%, the PH value being 8-9, the average grain diameter being 7-24nm, the specific surface area being 140-400m<2>/g and the viscosity being 17-20cp; the solution B serves as a curing agent and is prepared by mixing a GaCl2 water solution with the mass concentration being 4-10% with an oxidized starch water solution with the mass concentration being 5-12% according to the proportion of 1:1; and after being mixed within the mass ratio of (4:1)-(5:1), the solutions A and B can be quickly cured within a time range from several minutes to two hours to form strength. The grouting material is electrically neutral, incombustible, low in viscosity, resistant to high temperature and long in quality guarantee period, can be quickly cured and molded under the actions of the curing agent and the flexibilizer, and is very high in strength, incombustible, safe and reliable after being cured.
Description
Technical field
The present invention relates to a kind of slip casting strengthening material to the lower fractured coal and rock of strength ratio, particularly a kind of injecting paste material of reinforcing for broken coal.
Background technology
Broken coal petrography is the engineering roadblock often running in working face mining and tunnelling.China's fractured roof coal seam proportion is great, and according to the investigation to 38 main mineral bureaus, the coal seam reserves that belong to fractured roof (being equivalent to 1 class top board in top board classification) account for 54.5% of these innings.Therefore, very easily produce roof fall accident at stope.In exploitation and tunneling process, generally there is following safety problem in coal and rock tunnel: 1. at the serious Area cracked of coal and rock, and the inbreak on full span length of roadway roof coal and part immediate roof, the wall caving degree of depth is large, and difficulty of construction is large, and safety case is poor, easily causes the accident; 2. top, tunnel emits to fall behind and forms cavity, accumulates a large amount of gas, brings a lot of difficulties to ventilation and gas management, has accident potential; 3. extremely dangerous in the top operation of the empty in-cavity construction grillage hook of inbreak, the grillage of local construction connects top weak effect or does not connect top, and support props up in instability status because back timber is empty, in the time meeting head on roof fall, easily causes support to smash or push away and collapses.
Broken coal petrography is effectively processed, and common treatment process one is to increase support material, and another kind is exactly cement injection.Increase support material the movement of coal mining support is brought to very large impact, can not fundamentally solve again roof fall problem; Grout is again because of the engineering propertiess such as its property noted is poor impact, and do not reach grouting consolidation effect.So, find new slip casting reach reinforce coal petrography there is important Research Significance.
At present, the chemical slip casting material (as the poly-sub-glue fat injecting paste material of two-pack) of reinforcing for broken coal, in use there is the problem of following 3 aspects in it:
1) viscosity is high, and poor fluidity is only suitable for, in the meet head on injection slip casting of local short range (<5m) of broken coal working face, being not suitable for the long drilled holes slip casting in return airway and air intake lane.For the overall slip casting of large working area, its consolidation effect is restricted greatly;
2) expensive, existing market price, between 3 ten thousand-4 ten thousand/ton, is not suitable for the larger broken coal reinforcing engineering application of grouting amount of working face.
3) need special import slip casting facility.
4) there is inflammable, explosive potentially dangerous in other classification injecting paste materials.
Summary of the invention
The object of the invention is to provide a kind of: cheap while reinforcing colliery broken coal, environmental protection, high-strength, the safe injecting paste material of reinforcing for broken coal.
The object of the present invention is achieved like this: this injecting paste material, by A solution and two kinds of solution compositions of B solution; Wherein A solution is poly-silicon solution, comprise: urea-formaldehyde resin and silicon sol, 2:1 coordinates in mass ratio, mixes and generate the poly-silicon solution of oyster white that mass concentration is 30～45% under 20 ~ 30 degree celsius temperature conditions, add again the poly-special toughner 4% of silicon solution, as the main liquid of injecting paste material; The solid content of described urea-formaldehyde resin is 35～40%, and mol ratio is less than 1.5, the E of free formaldehyde content≤3mg/100g
0level environment-friendly urea-formaldehyde resin; The mass concentration of described silicon sol is 30～40%, silicon sol pH value 8～9, median size 7～24nm, specific surface area 140～400m
2/ g, viscosity 17～20cp;
B solution is solidifying agent, comprises calcium chloride and Sumstar 190, and wherein the purity of calcium chloride is 90%, respectively to calcium chloride with in Sumstar 190, add pure water mixing to become the aqueous solution, the mass concentration of calcium chloride water is 4% ~ 10%; The mass concentration of the aqueous solution of Sumstar 190 is 5% ~ 12%, by 1:1 quality proportioning, mixes at normal temperatures;
The mass ratio of A solution and B solution is 4:1～5:1.
Beneficial effect, owing to having adopted such scheme, urea-formaldehyde resin colloid is the dispersion system of high dispersing, its dispersed particle size is 0.1
～10
between.Because the particle of colloid has very large specific surface, the free energy of system is also very high, so particle has the trend of automatic gathering with reduction system surface energy, belong to thermodynamic unstable system, and its stability depends on magnetism and repulsive force between particle.Particle encounter has two kinds of results, one is that repulsion is greater than gravitation, colloidal sol still maintains the original state, and another kind is that gravitation is greater than repulsion, causes coalescent, so very low in particle concentration, do not reach certain surface-area and surface can time, can automatically not occur coalescent, in not containing ionogen or the very low colloidal sol of electrolyte concentration, repulsive force between sol particles is enough to stop between particle and automatically assembles, thereby maintains the original state.On the contrary, if above two kinds of concentration reach certain coupling, just there will be coalescently still to cause and solidify.
In urea-formaldehyde resin, have protonated formaldehyde bi adsorbing layer, play a part stablizer storage period at resin.Due to the protective membrane effect of this protonated formaldehyde bi adsorbing layer, the effective collision chance that makes colloidal particle occur to assemble has declined greatly, so there is longer storage period.But once there be electrolytical intervention, solidification process will be accelerated.Taking strong acid weak base salt as example, electrolyte dissolution, enters glue with negative ions, makes glue P H occur the variation that first declines and go up and decline again.Reason is the effect of strong acid radical ion, pH is declined, but acid group immediately with the skin effect of bi adsorbing layer, exercising result gos up pH value, the OH-effect in endoplasm sublayer and the glue being simultaneously exposed, cause whole bi adsorbing layer to destroy, between sizing material, effective collision increases substantially, occur coalescent, formaldehyde discharge, H+ stays in glue, and pH declines again.Consider from the angle of storage, urea-formaldehyde resin adhesive is all to place under weakly alkaline condition, can protect like this stable of this bi adsorbing layer, thereby have certain storage period.
Silicon sol ph value is between 8 ~ 12, and specific surface area is 50 ~ 400m
2/ g, particle size range is between 1-100nm, with general particle diameter 0.1 ~ 10
emulsion compare little many of particle diameter, therefore, adding of silicon sol has the effect of 3 aspects 1. can keep good weak base environment by urea-formaldehyde resin solution to urea aldehyde urea formaldehyde, increases its quality guaranteed period.2. silica sol granule is more easily distributed in resin, further improves the mechanical property of mixing solutions after fixed.3. silicon sol and urea-formaldehyde resin solidify the coalescent and settling process that all belongs to microcosmic particle, therefore under the solution effects such as solidifying agent calcium chloride, change the stable weak base environment coexisting of urea-formaldehyde resin and silicon sol, make respectively the coalescent sedimentation of urea-formaldehyde resin and silicon sol and form tridimensional network separately, this tridimensional network is interlaced, final gel and curing.
Cheap while reinforcing colliery broken coal, environmental protection, high-strength, safety, reached object of the present invention.
Advantage: solid coal New Grouting Material of the present invention, its price is at 0.6 ten thousand～0.9 ten thousand/ton, and its initial viscosity is little of 20cp left and right, there is good perviousness and higher consolidation strength, not charged, do not burn, viscosity is low, high temperature resistant, long quality-guarantee period, do not burn, free from environmental pollution, safe and reliable, energy curing molding rapidly under solidifying agent and toughner effect, gel time is adjustable at any time according to site operation situation, and regulation range is wide, available domestic common grouting pump slip casting, convenience ease in use.Can be applicable to the grouting and reinforcing of the fractured coal and rock such as island working face broken coal, distributed fault broken coal that under coal mine, coal mining field runs into.
Embodiment
Embodiment 1: this injecting paste material, by A solution and two kinds of solution compositions of B solution; Wherein A solution is poly-silicon solution, comprising: urea-formaldehyde resin and silicon sol, and 2:1 coordinates in mass ratio, mixes and generates the poly-silicon solution of oyster white that mass concentration is 30～45%, as the main liquid of injecting paste material under 20 ~ 30 degree celsius temperature conditions; The solid content of described urea-formaldehyde resin is 35～40%, and mol ratio is less than 1.5, the E of free formaldehyde content≤3mg/100g
0level environment-friendly urea-formaldehyde resin; The mass concentration of described silicon sol is 30～40%, silicon sol pH value 8～9, median size 7～24nm, specific surface area 140～400m
2/ g, viscosity 17～20cp;
B solution is solidifying agent, comprises calcium chloride and Sumstar 190, and wherein the purity of calcium chloride is 90%, respectively to calcium chloride with in Sumstar 190, add pure water mixing to become the aqueous solution, the mass concentration of calcium chloride water is 4% ~ 10%; The mass concentration of the aqueous solution of Sumstar 190 is 5% ~ 12%, by 1:1 quality proportioning, mixes at normal temperatures;
The mass ratio of A solution and B solution is 4:1～5:1; After mixing, can in several minutes～2 hour, solidify and form rapidly intensity.
Get the urea-formaldehyde resin 4000Kg of solid content 35%, E0 level, mass concentration is 35% silicon sol 4000 Kg, is placed in reactor, heats to 30 degree, reacts 10 minutes, generates poly-silicon solution.As A liquid;
Getting mass ratio is: 5:10:85, by purity higher than 90%GaCL
2, the aqueous solution 100 Kg that form of Sumstar 190, pure water mixing are as B liquid; .
Utilize domestic general chemistry grouting pump, A/B solution A:B=4:1 by volume, under stress, is fed in coal, rock mass, waits it to solidify.
1) urea-formaldehyde resin, as injecting paste material, facts have proved that urea-formaldehyde resin mol ratio is less than 1.5 o'clock slurries and is difficult to curing gel.The poly-silicon solution of the present invention is less than the E of formaldehyde content≤3mg/100g of 1.5 by mol ratio
0level environment-friendly urea-formaldehyde resin, urea-formaldehyde resin solid content 35～40%, with mass concentration be 30～40% silicon sol, silicon sol pH value 8～12, median size 7～20nm, specific surface area 140～400m
2/ g, viscosity 17～20cp, the poly-silicon solution of oyster white that the 5:1 mass concentration that hybrid reaction generates under 30～40 degree celsius temperature conditions is 30～45% in mass ratio, the particle that silicon sol is trickle, can effectively be penetrated in the active group (CH2OH ,-NH-,-CH2-O-CH2-) of urea-formaldehyde resin, being cross-linked to form stable tridimensional network and silica sol gel at its gel, to form reticulated structure interlaced.Can be used as the main raw that broken coal is reinforced.
2) facts have proved that mol ratio is less than 1.5 urea-formaldehyde resin because it is difficult for gel solidification, should not serve as injecting paste material, but mol ratio is less than 1.5 urea-formaldehyde resin and mostly is environmental protection type resin, and therefore this injecting paste material adds after silicon sol and calcium chloride solidifying agent, and environment protection type urea formaldehyde resin is applied.
2) solidifying agent: the aqueous solution being formed higher than 90% calcium chloride, Sumstar 190, pure water mixing by purity.Its mass ratio is: (4 ~ 10): (5 ~ 12): (91 ~ 78).
3) this injecting paste material is more than fixed rear its maximum compressive strength can reach 14MPa, more than dry bond strength reaches 3MPa.
4) these slurries have higher-strength after solidifying in use, do not burn, not charged, free from environmental pollution safe and reliable, can be applicable to the grouting and reinforcing of island working face broken coal that under coal mine, coal mining field runs into, distributed fault broken coal, broken coal that strength ratio is lower.
Embodiment 2: get the urea-formaldehyde resin 4000Kg of solid content 39%, E0 level, mass concentration is 40% silicon sol 1000 Kg, is placed in reactor, heats to 25 degree, reacts 10 minutes, generates poly-silicon solution.As A liquid;
Getting mass ratio is: 10:12:78, by purity higher than 90%GaCL
2, the aqueous solution 100 Kg that form of Sumstar 190, pure water mixing are as B liquid; Utilize domestic general chemistry grouting pump, A/B solution A:B=5:1 by volume, under stress, is fed in coal, rock mass, waits it to solidify.
Embodiment 3: get the urea-formaldehyde resin 4000Kg of solid content 30%, E0 level, mass concentration is 37% silicon sol 1000 Kg, is placed in reactor, heats to 20 degree, reacts 10 minutes, generates poly-silicon solution.As A liquid;
Getting mass ratio is: 6:8:84, by purity higher than 95%GaCL
2, the aqueous solution 100 Kg that form of Sumstar 190, pure water mixing are as B liquid; Utilize domestic general chemistry grouting pump, A/B solution A:B=5:1 by volume, under stress, is fed in coal, rock mass, waits it to solidify.
Utilize domestic general chemistry grouting pump, A/B solution A:B=5:1 by volume, under stress, is fed in coal, rock mass, waits it to solidify.
Claims (1)
1. an injecting paste material of reinforcing for broken coal, is characterized in that: this injecting paste material, by A solution and two kinds of solution compositions of B solution; Wherein A solution is poly-silicon solution, comprise: urea-formaldehyde resin and silicon sol, 2:1 coordinates in mass ratio, under 20 ~ 30 degree celsius temperature conditions, mix and generate the poly-silicon solution of oyster white that mass concentration is 30～45%, add again the poly-special toughner 4% of silicon solution, toughner is that phthalic ester (DOP), phosphate toluene diphenyl ester (CDP) mass ratio are 1.2:0.8 Normal Atmospheric Temperature Liquid mixture, as the main liquid of injecting paste material; The solid content of described urea-formaldehyde resin is 35～40%, and mol ratio is less than 1.5:1, the E of free formaldehyde content≤3mg/100g
0level environment-friendly urea-formaldehyde resin; The mass concentration of described silicon sol is 30～40%, silicon sol pH value 8～9, median size 7～24nm, specific surface area 140～400m
2/ g, viscosity 17～20cp;
B solution is solidifying agent, comprises calcium chloride and Sumstar 190, and wherein the purity of calcium chloride is 90%, respectively to calcium chloride with in Sumstar 190, add pure water mixing to become the aqueous solution, the mass concentration of calcium chloride water is 4% ~ 10%; The mass concentration of the aqueous solution of Sumstar 190 is 5% ~ 12%, by 1:1 quality proportioning, mixes at normal temperatures;
The mass ratio of A solution and B solution is 4:1～5:1; After mixing, can in several minutes～2 hour, solidify and form rapidly intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110376459.8A CN102492405B (en) | 2011-11-24 | 2011-11-24 | Grouting material for reinforcing fragmentized coal body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110376459.8A CN102492405B (en) | 2011-11-24 | 2011-11-24 | Grouting material for reinforcing fragmentized coal body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102492405A CN102492405A (en) | 2012-06-13 |
| CN102492405B true CN102492405B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110376459.8A Expired - Fee Related CN102492405B (en) | 2011-11-24 | 2011-11-24 | Grouting material for reinforcing fragmentized coal body |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569699A (en) * | 2015-12-22 | 2016-05-11 | 大同煤矿集团有限责任公司 | Inclined shaft development support technology for isolated coal pillar |
| CN111472717A (en) * | 2020-04-24 | 2020-07-31 | 中煤科工集团重庆研究院有限公司 | Fixed-point reinforcing method for long borehole in coal mine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3237691A (en) * | 1965-04-16 | 1966-03-01 | Halliburton Co | Method of consolidating sands, earthen formations and the like |
| SU1681006A1 (en) * | 1989-09-19 | 1991-09-30 | Всесоюзный научно-исследовательский институт организации и механизации шахтного строительства | Grouting mortar |
| CN101314663A (en) * | 2008-06-13 | 2008-12-03 | 中国矿业大学 | Chemical slip casting material for mining |
| CN101955628A (en) * | 2010-09-02 | 2011-01-26 | 中国矿业大学 | Sol resin grout liquid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5760397B2 (en) * | 1973-08-14 | 1982-12-18 | Nitsuto Kagaku Kogyo Kk | |
| JPS5824469B2 (en) * | 1974-09-19 | 1983-05-21 | 日東化学工業株式会社 | Doshitsu Antei Kahou |
-
2011
- 2011-11-24 CN CN201110376459.8A patent/CN102492405B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3237691A (en) * | 1965-04-16 | 1966-03-01 | Halliburton Co | Method of consolidating sands, earthen formations and the like |
| SU1681006A1 (en) * | 1989-09-19 | 1991-09-30 | Всесоюзный научно-исследовательский институт организации и механизации шахтного строительства | Grouting mortar |
| CN101314663A (en) * | 2008-06-13 | 2008-12-03 | 中国矿业大学 | Chemical slip casting material for mining |
| CN101955628A (en) * | 2010-09-02 | 2011-01-26 | 中国矿业大学 | Sol resin grout liquid |
Non-Patent Citations (1)
| Title |
|---|
| 脲醛树脂胶黏剂低毒化改性剂研究进展;高伟等;《化学与粘合》;20061130;第28卷(第06期);424-428 * |
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| CN102492405A (en) | 2012-06-13 |
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