CN101805155A - Cement-based high-breaking-resistant rock-burst prevention rapid-curing material and preparation method thereof - Google Patents
Cement-based high-breaking-resistant rock-burst prevention rapid-curing material and preparation method thereof Download PDFInfo
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- CN101805155A CN101805155A CN 201010134025 CN201010134025A CN101805155A CN 101805155 A CN101805155 A CN 101805155A CN 201010134025 CN201010134025 CN 201010134025 CN 201010134025 A CN201010134025 A CN 201010134025A CN 101805155 A CN101805155 A CN 101805155A
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- cement
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- rock burst
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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
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/0006—Alkali metal or inorganic ammonium compounds
- C04B2103/0008—Li
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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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Abstract
The invention relates to a high-breaking-resistant rock-burst prevention material, in particular to a cement-based rock-burst prevention material doped with elastic emulsion and a preparation method. The invention adopts the technical scheme that: the cement-based high-breaking-resistant rock-burst prevention material comprises the following components in part by weight: 80 to 97 parts of cement, 3 to 20 parts of polymer elastic emulsion for cement, 0.02 to 8 parts of additive for concrete, 0.3 to 1.5 part of sand and 0.20 to 0.35 water cement. The flexibility of the cement plaster is obviously improved, the breaking resistant strength is greatly improved, the material is also sprayed on the surface of the rock layer by a jet concrete device, the rock layer can be well supported, and the rock burst can be prevented; in addition, the material also can be used for the engineering with high breaking resistant strength performance such as heavy load road, large span bridges and the like.
Description
Technical field
The present invention relates to the anti-rock burst material of a kind of high anti-folding, anti-rock burst material of particularly a kind of cement based of admixture elastic emulsion and preparation method.
Background technology
Rock burst is in High Ground Stress Areas underground opening digging process, because stress in rock mass discharges the phenomenon that causes flying out suddenly sillar in chamber periphery rock mass.Rock burst mainly results from the elasticity rock mass, also can result from the elastic-plastic rock mass sometimes.The essence of rock burst is that country rock is followed exergonic a kind of destruction, and rock burst at first is a kind of collapse mode of country rock in other words, is again a kind of exergonic phenomenon simultaneously.Rock burst belongs to a kind of geologic hazard.Its serious threat workmen's safety influences job schedule, has caused tremendous loss to the development of the national economy.Its serious threat workmen's safety influences job schedule, has caused tremendous loss to the development of the national economy.
Press the energy of happening part and release, rock burst can be divided into following three types: the rock burst (being called as the rock shooting) that country rock table portion rock breaks suddenly and causes, ore pillar or on a large scale country rock destroy suddenly the rock burst (being called as the mine hits or rock burst) that causes, and the rock burst that causes of fault movement.
For rock burst, should follow and rely mainly on prevention, control bonded principle, to the characteristics of surrounding rock of side in face of the excavation, hydrogeological situation etc. are predicted, are forecast, when finding the possibility of stronger rock burst generation is arranged, should in time study Construction Countermeasures, perform the preceding necessary preparation of construction.Rock burst depends primarily on geologic condition, terrestrial stress condition and construction triggering factors.For alleviating the harm of rock burst, very important one is exactly before the chamber excavation and behind the excavation country rock in time to be carried out supporting, do the size and the distribution that not only can improve stress like this, and can also make the rock mass of chamber periphery become the space three-dimensional stress state from plane stress state, thereby reach the purpose that alleviates rock burst harm, and can also play protective effect, prevent from that rock from launching and peeling off to cause the accident.Method for protecting support the most commonly used is the supporting of anchor spray concrete, steel fabric shotcrete supporting, steel support in the construction, anchor pole and advance anchor bolt supporting, secondary lining, the method that is supporting is to spray steel fiber or plastic optical fibre concrete to arch and sidewall immediately after explosion, settle anchor pole and reinforcing mat again, also to mount the steel bow member in case of necessity and settle advance anchor bolt to carry out supporting, to guarantee the construction safety in rock burst location, drop to the possibility of rock burst generation and the harm of rock burst minimum.
At present, the sprayed concrete that is used for anti-rock burst is mainly Steel Fiber Reinforced Concrete, the admixture steel fiber, adding by steel fiber improves its folding strength, but the Steel Fiber Reinforced Concrete cost is higher, and steel fiber is difficult for disperseing in concrete, cause steel fiber in concrete, easily to cause and disperse inequality, churning time is long, and operating efficiency is low, thereby influences construction speed.
Summary of the invention
The objective of the invention is to, overcome the deficiencies in the prior art, a kind of cement-based high-breaking-resistant rock-burst prevention rapid-curing material is provided, this technical scheme is owing to elastomeric polymer mixes, improve snappiness, the weather resistance of sand-cement slurry, obviously improved the anti-folding and the adhesive tensile resistance intensity of sand-cement slurry.It is mainly used in Tunnel Engineering and the down-hole engineering, preventing the rock stratum slump, and is used for the engineering that other is had relatively high expectations to fracture resistance.In actual applications, can be according to concrete-spraying technology with this injection of material to rock layer surface because this material has high folding strength and crimping ratio, can be good at stoping the rock stratum slump.
For solving the problems of the technologies described above, technical scheme of the present invention is: the anti-rock burst material of the high anti-folding of a kind of cement based, its component and ratio of weight and number are: cement: 80-97, polymer cement elastic emulsion: 3-20, concrete admixture: 0.02-8, dust and sand ratio: 0.3-1.5, water cement ratio: 0.20-0.35.
Polymer cement elastic emulsion of the present invention is benzene emulsion, styrene-butadiene emulsion, polyacrylate dispersion or silicone oil emulsion.
Polymer cement of the present invention is not less than 40wt% with the solids content of elastic emulsion.
Concrete of the present invention comprises following component by ratio of weight and the number of copies with admixture: high efficiency water reducing agent: 0.01-3, accelerating chemicals: 0.01-5.
High efficiency water reducing agent of the present invention is the concrete water reducer, comprising: melamine series high-efficiency water-reducing agent, naphthalene series high-efficiency water-reducing agent, high-efficiency water-reducing agent of poly-carboxylic acid etc.
Accelerating chemicals of the present invention is one or more of Quilonum Retard, lithium chloride, lithium hydroxide, yellow soda ash, sodium aluminate, villaumite.
Cement of the present invention is 42.5 and aluminosulfate cement, ferro-aluminate cement, fluoroaluminate cement or the high-alumina cement of above label.
The present invention also provides the anti-folding of cement based height anti-rock burst preparation methods: portion rate is got cement, polymer cement elastic emulsion, concrete admixture, sand and water according to required weight, with cement with after admixture mixes, mix stirring evenly again with sand, add water and add polymer cement simultaneously and stir after with elastic emulsion and get final product.Wherein, when pressing water cement ratio calculating amount of water, need moisture in the emulsion is counted.When this material uses, utilize sprayed concrete equipment to spray in rock layer surface fast.
The polymkeric substance volume increases, this material folding strength increases equally, between 30-40%, reach maximum value, but for preventing that rock burst from taking place, volume is 15% just can satisfy the use needs, if admixture can make cost raise again, in addition, the increase of polymkeric substance volume can make the water reducer volume increase, and the mortar viscosity is too big, has also brought the problem that should not construct.
Compare with fibrous concrete, this material property is good, and elastic emulsion disperses in material easily, can reduce churning time, the operating efficiency height.In addition, the snappiness of sand-cement slurry of the present invention is obviously improved, and folding strength significantly improves, and compares with fibrous concrete, and this material has good adhesive tensile resistance intensity.The cost of the fibrous shotcrete that the present actual engineering of the present invention is used is suitable, but performance is better than fibrous shotcrete, and the final folding strength of fibrous shotcrete is about 9MPAa, and 1 day intensity of this material can reach 9MPa.
The invention has the beneficial effects as follows: anti-rock burst material of the present invention is a kind of material of only developing at anti-rock burst phenomenon, its maximum characteristics are exactly the folding strength height, on the basis of admixture elastic emulsion, pass through various admixtures of control and water cement ratio, improve the sand-cement slurry folding strength to greatest extent, thereby can well reach the purpose that prevents that rock burst from taking place.The anti-rock burst material cost of the high anti-folding of the cement based of the present invention's design is lower, and its folding strength, snappiness, adhesive aggregation performance all are better than Steel Fiber Reinforced Concrete, this material utilizes sprayed concrete equipment to be sprayed on rock layer surface in construction equally, can well play the effect of supporting rock stratum, prevent the generation of rock burst, in addition, this material also can be used for engineerings such as the heavily loaded road that fracture resistance is had relatively high expectations, high span brutal.
Embodiment
Embodiment 1
1, component and parts by weight ratio: 87 parts of aluminosulfate cements, 13 parts of benzene emulsions, mix admixture outward: 0.3 part of high-efficiency water-reducing agent of poly-carboxylic acid, 0.04 part of Quilonum Retard, the dust and sand ratio is 1.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.23 and stir after water adds benzene emulsion simultaneously.
Embodiment 2
1, component and parts by weight ratio: 87 parts of aluminosulfate cements, 13 parts of benzene emulsions, mix admixture outward: 0.3 part of high-efficiency water-reducing agent of poly-carboxylic acid, 0.04 part of Quilonum Retard, the dust and sand ratio is 1.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.25 and stir after water adds benzene emulsion simultaneously.
Embodiment 3
1, component and parts by weight ratio: 87 parts of aluminosulfate cements, 13 parts of benzene emulsions, mix admixture outward: 0.3 part of high-efficiency water-reducing agent of poly-carboxylic acid, 0.04 part of Quilonum Retard, the dust and sand ratio is 1.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.28 and stir after water adds benzene emulsion simultaneously.
Embodiment 1,2 and the contrast of 3 index parameter are as following table:
Can find out that from last table each component is identical in the cement-based high-breaking-resistant rock-burst prevention rapid-curing material of the present invention, content is identical, and along with the increase of water cement ratio, final setting time extends, and shows as the reduction of folding strength and ultimate compression strength.
Embodiment 4
1, component and parts by weight ratio: 85 parts of aluminosulfate cements, 15 parts of benzene emulsions, mix admixture outward: 1.5 parts of FDN high efficiency water reducing agents, 0.05 part of Quilonum Retard, the dust and sand ratio is 1.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.23 and stir after water adds benzene emulsion simultaneously.
Embodiment 5
1, component and parts by weight ratio: 87 parts of aluminosulfate cements, 13 parts of benzene emulsions, mix admixture outward: 1.5 parts of FDN high efficiency water reducing agents, 0.05 part of Quilonum Retard, the dust and sand ratio is 1.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.23 and stir after water adds benzene emulsion simultaneously.
Embodiment 6
1, component and parts by weight ratio: 90 parts of aluminosulfate cements, 10 parts of benzene emulsions, mix admixture outward: 1.5 parts of FDN high efficiency water reducing agents, 0.05 part of Quilonum Retard, the dust and sand ratio is 1.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.23 and stir after water adds benzene emulsion simultaneously.
Embodiment 4,5 and 6 index parameter such as following table:
Can find out that from last table other each component is identical in the cement-based high-breaking-resistant rock-burst prevention rapid-curing material of the present invention, under the different situation of the content of benzene emulsion, along with the increase of benzene emulsion content, final setting time shortens, and folding strength increases.
Embodiment 7
1, component and parts by weight ratio: 90 parts of ferro-aluminate cements, 10 parts of styrene-butadiene emulsion, mix admixture outward: 1.5 parts of FDN high efficiency water reducing agents, 0.05 part of lithium hydroxide, the dust and sand ratio is 1.2.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.23 and stir after water adds styrene-butadiene emulsion simultaneously.
3, index parameter such as following table:
Embodiment 8
1, component and parts by weight ratio: 90 parts of fluoroaluminate cements, 10 parts of polyacrylate dispersions, mix admixture outward: 1.5 parts of FDN high efficiency water reducing agents, yellow soda ash 0.05, the dust and sand ratio is 1.2.
2, construction technology: cement, admixture and sand mixed stirring evenly, add by water cement ratio 0.23 and stir after water adds polyacrylate dispersion simultaneously.
3, index parameter such as following table:
Claims (8)
1. the high anti-folding of cement based is prevented the rock burst material, and it is characterized in that: its component and ratio of weight and number are: cement: 80-97, polymer cement elastic emulsion: 3-20, concrete admixture: 0.02-8, dust and sand ratio: 0.3-1.5, water cement ratio: 0.20-0.35.
2. according to the anti-rock burst material of the high anti-folding of the described cement based of claim 1, it is characterized in that: described polymer cement elastic emulsion is benzene emulsion, styrene-butadiene emulsion, polyacrylate dispersion or silicone oil emulsion.
3. according to claim 1 or the anti-rock burst material of the high anti-folding of 2 described cement based, it is characterized in that: described polymer cement is not less than 40wt% with the solids content of elastic emulsion.
4. according to the anti-rock burst material of the high anti-folding of the described cement based of claim 1, it is characterized in that: described concrete comprises following component by ratio of weight and the number of copies with admixture: high efficiency water reducing agent: 0.01-3, accelerating chemicals: 0.01-5.
5. according to the anti-rock burst material of the high anti-folding of the described cement based of claim 4, it is characterized in that: described high efficiency water reducing agent is the concrete water reducer, comprising: melamine series high-efficiency water-reducing agent, naphthalene series high-efficiency water-reducing agent, high-efficiency water-reducing agent of poly-carboxylic acid etc.
6. according to the anti-rock burst material of the high anti-folding of the described cement based of claim 4, it is characterized in that: described accelerating chemicals is one or more of Quilonum Retard, lithium chloride, lithium hydroxide, yellow soda ash, sodium aluminate, villaumite.
7. according to the anti-rock burst material of the high anti-folding of the described cement based of claim 1, it is characterized in that: described cement is 42.5 and aluminosulfate cement, ferro-aluminate cement, fluoroaluminate cement or the high-alumina cement of above label.
8. the anti-rock burst preparation methods of the anti-folding of cement based height according to claim 1: it is characterized in that: portion rate is got cement, polymer cement elastic emulsion, concrete admixture, sand and water according to required weight, with cement with after admixture mixes, mix stirring evenly again with sand, add water and add polymer cement simultaneously and stir after with elastic emulsion and get final product.
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| CN 201010134025 CN101805155A (en) | 2010-03-29 | 2010-03-29 | Cement-based high-breaking-resistant rock-burst prevention rapid-curing material and preparation method thereof |
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| CN 201010134025 CN101805155A (en) | 2010-03-29 | 2010-03-29 | Cement-based high-breaking-resistant rock-burst prevention rapid-curing material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924030A (en) * | 2012-01-16 | 2013-02-13 | 四川达竹煤电(集团)有限责任公司 | Novel underground spray coating material and preparation method thereof |
| CN103449788A (en) * | 2013-06-18 | 2013-12-18 | 上海宝冶工程技术有限公司 | Outer wall insulation board adhesive mortar and preparation method thereof |
| CN104693911A (en) * | 2015-02-09 | 2015-06-10 | 山西誉邦科技有限公司 | Inorganic nano spraying material and preparation method thereof |
| CN105271866A (en) * | 2015-10-16 | 2016-01-27 | 卓达新材料科技集团威海股份有限公司 | Exciting agent for sulfoaluminate cement as well as preparation method and application method of exciting agent |
| CN109608137A (en) * | 2019-01-07 | 2019-04-12 | 山东科技大学 | A kind of thin layer rock reinforcing material |
| CN113698162A (en) * | 2021-09-09 | 2021-11-26 | 广州协堡建材有限公司 | Protective mortar for outer wall of water delivery pipe and preparation process thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195528A (en) * | 2006-12-05 | 2008-06-11 | 熊永强 | Self-levelling elastic mortar |
-
2010
- 2010-03-29 CN CN 201010134025 patent/CN101805155A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195528A (en) * | 2006-12-05 | 2008-06-11 | 熊永强 | Self-levelling elastic mortar |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924030A (en) * | 2012-01-16 | 2013-02-13 | 四川达竹煤电(集团)有限责任公司 | Novel underground spray coating material and preparation method thereof |
| CN103449788A (en) * | 2013-06-18 | 2013-12-18 | 上海宝冶工程技术有限公司 | Outer wall insulation board adhesive mortar and preparation method thereof |
| CN104693911A (en) * | 2015-02-09 | 2015-06-10 | 山西誉邦科技有限公司 | Inorganic nano spraying material and preparation method thereof |
| CN105271866A (en) * | 2015-10-16 | 2016-01-27 | 卓达新材料科技集团威海股份有限公司 | Exciting agent for sulfoaluminate cement as well as preparation method and application method of exciting agent |
| CN109608137A (en) * | 2019-01-07 | 2019-04-12 | 山东科技大学 | A kind of thin layer rock reinforcing material |
| CN113698162A (en) * | 2021-09-09 | 2021-11-26 | 广州协堡建材有限公司 | Protective mortar for outer wall of water delivery pipe and preparation process thereof |
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Application publication date: 20100818 |