CN107954668A - A kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault - Google Patents
A kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault Download PDFInfo
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- CN107954668A CN107954668A CN201711097970.8A CN201711097970A CN107954668A CN 107954668 A CN107954668 A CN 107954668A CN 201711097970 A CN201711097970 A CN 201711097970A CN 107954668 A CN107954668 A CN 107954668A
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- inorganic compounding
- injecting paste
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
Abstract
The invention discloses a kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault.It is uniformly mixed by base-material, flyash and chopped carbon fiber and is obtained at normal temperatures, or is uniformly mixed by base-material, portland cement, flyash and chopped carbon fiber and is obtained at normal temperatures.In use, water and inorganic compounding injecting paste material in mass ratio 0.3~0.4:1 is mixed evenly, up to inorganic compounding injection slurry；The presetting period of inorganic compounding injection slurry is more than 5h, and 28d uniaxial compressive strengths are not less than 45MPa, and flexural strength is not less than 7 MPa, and the more conventional PO42.5 cement injections material of Residual Compressive Strength improves more than 30%.The inorganic compounding injecting paste material of the present invention can meet long drilled holes pre-pouring grout reinforcement process requirement in mobility, hardening time, adhesion strength, the feature of environmental protection, security etc., can effectively improve near Faults coal rock strength, ensure working face safely and fast pass through tomography.
Description
Technical field
The invention belongs to Grouting support technology field, and in particular to a kind of underground fault zone fractured coal and rock pre-reinforcement
Inorganic compounding injecting paste material.
Background technology
Tomography is that earth's crust stress is broken, and the construction of notable relative displacement occurs along plane of fracture both sides sillar.Tomography
Scales etc., big person's across pitch extend up to thousands of kms, can cut through the earth's crust, the title being usually made of many tomographies downwards
For fracture belt.
In coal mining production process, larger tomography generally just takes workaround in the design phase, subtracts as far as possible
Influence of the craven fault to production.But for relatively small tomography（Within general drop 5m）, to avoid " workaround " from bringing
Coal resources significant wastage and destruction to continuous production, working face can be forced through small tomography.Working face at present
Passing fault mainly takes the passive mode of float in advance car or brake, with it is shortest it is broken top or broken bottom back production distance catch upper disk or
The top plate of lower wall, takes stent to drop the techniques such as fast drawing, immediate support top plate less or after tomography exposure at the exposure of tomography
Carry out wall rock grouting and carry out consolidating crack.Run into larger drop tomography and take above-mentioned construction technology, often cause working face wall
Wall caving, top plate emit leakage, and Roof is of high cost, and security is poor, can not ensure that working face continuity promotes, seriously affect work
Face per unit area yield.
The many mine geology complicated conditions in China, fault tectonic is more, and each mine that produces is influenced in various degree by tomography, work
It is to restrict mine safety production and the significant technology issues of benefit to make the quick passing fault technology in face.Taken off according to face up and down trough
The fault parameter and orientation of dew, carry out first advance Deep-hole Pre-grouting, in advance reinforcing coal before the advance of the face to tomography
Rock stratum, maintains the integrality of country rock and improves bearing capacity, is normally produced during being guarantee raising Coal Face Passing Through Fault important
Technical measures, to leaking cash, roof fall, the accidents such as frame of falling during preventing passing fault, it is great to ensure that the safe and efficient production of working face has
Meaning.
Current mining injecting paste material series has inorganic series（Including single liquid cement mortar class, cement-sodium silicate class and water glass
Glass class）And organic series（Including quality plasmoid humor, polyurethanes slurries, Lauxite plasmoid humor etc.）.The inorganic general choosing of series
It is main material with cement, derives from a wealth of sources, price is low, grouting process and equipment are simple, but the Seed harvest formed is directed to fault zone
Rock improvement low strength, field-hardened effect unobvious, there are security risk；Organic series are mainly chemical material, can be noted
Property it is good, fastening strength is high, but there is the defects of gel time is short, price is high, the feature of environmental protection is poor, not being suitable for remote slip casting,
And for the big engineering of Coal Face Passing Through Fault this plasmoid humor demand, engineering cost is prohibitively expensive.
Domestic common research of the slip casting in terms of grouting parameter is more deep, at grouting theory, laboratory test and scene
Using all comparative maturities, current Shallow hole grouting problem is preferably resolved, but note in advance at a distance in Coal Face Passing Through Fault superdeep holes
Lack corresponding research in terms of slurry（Preferred, grouting process design including injecting paste material etc.）, largely limit common note
Application of the pulp material in slip casting field.
The content of the invention
For above-mentioned existing common inorganic injecting paste material set strength is low and hardening time is short, organic injecting paste material is of high cost
With the feature of environmental protection it is poor the problem of, the present invention provide a kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault.
A kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault is by base-material, flyash and chopped carbon
Fiber is uniformly mixed obtained siccative at normal temperatures, and the siccative is inorganic compounding injecting paste material；Wherein：The matter of base-material and flyash
Amount is than being 2~4.5:1, and base-material and flyash be component A, the mass ratio of chopped carbon fiber and component A is 0.0007~
0.0013:1；
In use, water and siccative in mass ratio 0.3~0.4:1 is mixed evenly, up to inorganic compounding injection slurry；
The technical characteristic parameter of the inorganic compounding injection slurry is as follows：
Presetting period is more than 5h；28d uniaxial compressive strengths are not less than 45MPa, and flexural strength is not less than 6MPa；Residual Compressive Strength
More conventional PO42.5 cement injections material improves more than 30%.
A kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault is by base-material, portland cement, powder
Coal ash and chopped carbon fiber are uniformly mixed obtained siccative at normal temperatures, and the siccative is inorganic compounding injecting paste material；Wherein：Base
The mass values scope of material, portland cement and flyash is 3:1:1~8:1:1, and base-material, portland cement and flyash are
Component A, chopped carbon fiber additive amount are 0.0007~0.0013 with component A mass ratio:1；
In use, water and siccative in mass ratio 0.3~0.4:1 is mixed evenly, up to inorganic compounding injection slurry；
The technical characteristic parameter of the inorganic compounding injection slurry is as follows：
Presetting period is more than 5h；28d uniaxial compressive strengths are not less than 45MPa, and flexural strength is not less than 6MPa；Residual Compressive Strength
More conventional PO42.5 cement injections material improves more than 30%.
The technical solution further limited is as follows：
The base-material by 0.4~0.9 part of Portland cement, 0.01~0.1 part of wollastonite powder, sulphate aluminium cement 0.01~
0.1 part, 0.01~0.1 part of slag powders, 0.005~0.01 part of water-reducing agent, 0.005~0.01 part of plastic expansion agent be uniformly mixed system
Into.
The portland cement strength grade is not less than 42.5, and initial set is not less than 45min, and final set is not more than 390min, than
Surface area is not less than 300m2/kg；
4~6mm of length of the chopped carbon fiber, 7 μm of filament diameter, intensity 4900 MPa, modulus 240GPa, elongation percentage be not small
In 2.1%；
Described 0.4~0.6%, 45 μm of square hole screen over-sizes of second class powered coal ash water content are not more than 25%.
In use, adding water while stirring into the siccative, continuous stirring 15~20 minutes is connected, that is, obtains inorganic compounding and notes
Slurries.
Compared with prior art, beneficial effects of the present invention embody in the following areas：
1. the inorganic compounding injecting paste material of the present invention is in mobility, hardening time, adhesion strength, the feature of environmental protection, security etc.
It can meet long drilled holes pre-pouring grout reinforcement process requirement, near Faults coal rock strength can be effectively improved, ensure working face safety
Quickly pass through tomography.
2. the present invention inorganic compounding injecting paste material is nontoxic, tasteless, pollution-free, non-corrosiveness, fire-retardant.
It is that the 30% of ordinary cement grout material amount of water is left 3. the inorganic compounding injecting paste material stirring water requirement of the present invention is few
Right and 24h bleeding rates are 0, and engineer application economy is strong.
4. the inorganic compounding injecting paste material of the present invention does not produce high temperature in solidification process, slip casting is safe and reliable.
5. the inorganic compounding injecting paste material 28d uniaxial compressive strengths of the present invention are not less than 45MPa, flexural strength is not less than 7
MPa；The more conventional PO42.5 cement injections material of Residual Compressive Strength improves more than 30%；The caking property of inorganic reinforcing material and coal body
It is good, solve the wall caving occurred during coal mining, roof fall phenomenon, make production more safe and reliable.
6. the presetting period length of the inorganic compounding injecting paste material of the present invention is more than>5h, good fluidity, permeability are strong；Big pressure
It can be completed under the conditions of power, big flow remote（>150m）Deep-hole Pre-grouting, realizes the advance reinforcement to crushed zone or tomography.
7. the inorganic compounding injecting paste material of the present invention is gone into the well in ground mixing pack, finished product, Site is directly applied, behaviour
Make simple, easily popularization.
Brief description of the drawings
The wet foster 28d uniaxial compressive strengths stress of inorganic compounding injecting paste material briquette marking condition that Fig. 1 is obtained by embodiment 1-
Strain curve；
Fig. 2 is resisted to reckon the actual amount after a discount by the wet foster 28d of inorganic compounding injecting paste material briquette marking condition that embodiment 1 obtains tests displacement-load curves；
The wet foster 28d uniaxial compressive strengths stress-strain of inorganic compounding injecting paste material briquette marking condition that Fig. 3 is obtained by embodiment 2
Curve；
Fig. 4 is resisted to reckon the actual amount after a discount by the wet foster 28d of inorganic compounding injecting paste material briquette marking condition that embodiment 2 obtains tests displacement-load curves.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is further described by embodiment.
Following embodiments are raw materials used and technical parameter is as follows：
Portland cement is PO42.5 portland cements：Chaohu conch cement Co., Ltd（Strength grade is 42.5, fineness
10% is must not exceed it is required that being tailed over for 80 μm of square hole screens, the presetting period is no earlier than 45min, and final setting time is earlier than 10h）；
Wollastonite powder：Changxing Chen Ming Chemical Co., Ltd.s（Dioxide-containing silica 49%, moisture≤0.3%, particle diameter D97 (μm)≤
10, thermal coefficient of expansion 6.5*10-6）；
Slag powders：Hebei Yan Xi mineral products processing factory（The content of the inorganic matter such as grade S95, its calcium activated, silicon, aluminium is more than 30%）；
Water-reducing agent：Jinan mountain and sea Chemical Co., Ltd.（5 ~ 35 DEG C of construction temperature, additive amount be generally cementitious material 1.0 ~
1.5%, mixing time is not less than 5min）；
Plastic expansion agent：Guangzhou Wei Pu chemical analysis Technology Co., Ltd.（Ash content 0.11%,（50 μm of sieve aperture）Fineness residue on sieve
0.16%, purity 98%, 3h free wxpansions degree 0.08%, 24h free wxpansions degree 0.12%）；
Sulphate aluminium cement：Lingshou County Yuan Tong Mineral Products Trades Co., Ltd（Relative density is in 2.87 ~ 2.92 g/cm3Between,
30 ~ 50min of presetting period, 40 ~ 90min of final setting time, the low ＜ 15% of overall porosity）；
PO52.5 portland cements：Chaohu conch cement Co., Ltd（Strength grade 52.5, initial set are not less than 45min, eventually
Solidifying to be not more than 390min, portland cement specific surface area is not less than 300m2/kg）；
Second class powered coal ash：Lingshou County perseverance stone ore Product processing factory（Water content 0.5% or so, 45 μm of square hole screen over-sizes are not more than
25%）；
Chopped carbon fiber：Yancheng Feng Yang special fibres Machinery Co., Ltd.（4 ~ 6mm of length, 7 μm of filament diameter, intensity 4900
MPa, modulus 240GPa, elongation percentage 2.1%）.
Embodiment 1
The concrete operation step for preparing inorganic compounding injecting paste material is as follows：
1）Under room temperature, dry base-material 1600g, flyash 400g and chopped carbon fiber 2g, base-material are weighed respectively：Flyash：It is short
Cut carbon fiber=4:1:0.005；Base-material is by 1200 g of PO42.5 portland cements, 128 g of wollastonite powder, sulphate aluminium cement 128
G, 120 g of slag powders, 11.2 g of water-reducing agent and 12.8 g of plastic expansion agent are uniformly mixed obtained, PO42.5 portland cements：Silicon
Ashes：Sulphate aluminium cement：Slag powders：Water-reducing agent：Plastic expansion agent==75:8:8:7.5:0.7:0.8.
2）Each raw material weighed is poured into stirring container successively, is stirred evenly.
3）By the ratio of mud 0.315:1 weighs water 630g, is slowly added to above-mentioned stirring container, while adding waterside to stir；After adding
Continue to be sufficiently stirred 15min, obtain inorganic compounding injection slurry.
4）According to GB/T 17671-1999 Test method for strength of hydraulic cement mortar（ISO methods）With GB/T 50107-2010 coagulations
The slurries stirred evenly are poured into two groups of crush test moulds by native ruggedness test evaluation criteria respectively（Every group of three test blocks）With two
The anti-folding experiment mould of group（Every group of three test blocks）, at the standard conditions（Temperature is 3 °C of 20 scholar, relative humidity 60-80%）Carry out
Maintenance.
5）After die-filling maintenance 7d, by the anti-folding mould form removal of one group of resistance to compression and one group, resistance to compression can be obtained（7.07×7.07×
7.07cm square）And anti-folding（4×4×16cm）The standard specimen of strength test.On pressure experiment machine to standard specimen into
The anti-foldings of row 7d and compression strength detection.
6）After die-filling maintenance 28d, by the anti-folding mould form removal of second group of resistance to compression and second group, resistance to compression can be obtained（7.07×7.07
× 7.07cm squares）And anti-folding（4×4×16cm）The standard specimen of strength test.To standard specimen on pressure experiment machine
Carry out the anti-foldings of 28d and compression strength detection.
After tested, reference block presetting period 5.5h made from the inorganic compounding injecting paste material of the present embodiment；Mark wet under condition
Support 7d and 28d uniaxial compressive strength averages and be divided into 42MPa and 58MPa, see Fig. 1, residual strength 20MPa or so；Mark wet under condition support
7d and 28d flexural strength averages are respectively 4.08MPa and 7.84MPa, see Fig. 2.
Embodiment 2
The concrete operation step for preparing inorganic compounding injecting paste material is as follows：
1）Under room temperature, dry base-material 1500g, flyash 500g and chopped carbon fiber 2g, base-material are weighed respectively：Flyash：It is short
Cut carbon fiber=3:1:0.004；Base-material is by 1125 g of PO42.5 portland cements, 120 g of wollastonite powder, sulphate aluminium cement 120
G, 112.5 g of slag powders, 10.5 g of water-reducing agent and 12.0 g of plastic expansion agent are uniformly mixed obtained, PO42.5 portland cements：
Wollastonite powder：Sulphate aluminium cement：Slag powders：Water-reducing agent：Plastic expansion agent==75:8:8:7.5:0.7:0.8.
2）Each raw material weighed is poured into stirring container successively, is stirred evenly.
3）By the ratio of mud 0.31:1 weighs water 620g, is slowly added to above-mentioned stirring container, while adding waterside to stir；Add follow-up
It is continuous to be sufficiently stirred 15min, obtain inorganic compounding injection slurry.
4）According to GB/T 17671-1999 Test method for strength of hydraulic cement mortar（ISO methods）With GB/T 50107-2010 coagulations
The slurries stirred evenly are poured into two groups of crush test moulds by native ruggedness test evaluation criteria respectively（Every group of three test blocks）With two
The anti-folding experiment mould of group（Every group of three test blocks）, at the standard conditions（Temperature is 3 °C of 20 scholar, relative humidity 60-80%）Carry out
Maintenance.
5）After die-filling maintenance 7d, by the anti-folding mould form removal of one group of resistance to compression and one group, resistance to compression can be obtained（7.07×7.07×
7.07cm square）And anti-folding（4×4×16cm）The standard specimen of strength test.On pressure experiment machine to standard specimen into
The anti-foldings of row 7d and compression strength detection.
6）After die-filling maintenance 28d, by the anti-folding mould form removal of second group of resistance to compression and second group, resistance to compression can be obtained（7.07×7.07
× 7.07cm squares）And anti-folding（4×4×16cm）The standard specimen of strength test.To standard specimen on pressure experiment machine
Carry out the anti-foldings of 28d and compression strength detection.
After tested, reference block made from the inorganic compounding injecting paste material of the present embodiment, presetting period 5.5h；Mark wet under condition
Support 7d and 28d uniaxial compressive strength averages and be divided into 34MPa and 54MPa, residual strength 20MPa or so；Mark wet foster 7d and 28d under condition
Flexural strength average is respectively 5.08MPa and 6.67MPa.
Embodiment 3
The concrete operation step for preparing inorganic compounding injecting paste material is as follows：
1）Under room temperature, dry base-material 1400g, PO52.5 cement 300g, flyash 300g and chopped carbon fiber 2g are weighed respectively,
Base-material：PO52.5 cement：Flyash：Chopped carbon fiber=7:1.5:1.5:0.01；Base-material is by PO42.5 portland cements 1050
G, 112 g of wollastonite powder, sulphate aluminium cement 112g, 105 g of slag powders, water-reducing agent 9.8g and 11.2 g of plastic expansion agent mixing are equal
It is even to be made, PO42.5 portland cements：Wollastonite powder：Sulphate aluminium cement：Slag powders：Water-reducing agent：Plastic expansion agent==75:8:8:
7.5:0.7:0.8。
2）Each raw material weighed is poured into stirring container successively, is stirred evenly.
3）By the ratio of mud 0.31:1 weighs water 620g, is slowly added to above-mentioned stirring container, while adding waterside to stir；Add follow-up
It is continuous to be sufficiently stirred 15min, obtain inorganic compounding injection slurry.
4）According to GB/T 17671-1999 Test method for strength of hydraulic cement mortar（ISO methods）With GB/T 50107-2010 coagulations
The slurries stirred evenly are poured into two groups of crush test moulds by native ruggedness test evaluation criteria respectively（Every group of three test blocks）With two
The anti-folding experiment mould of group（Every group of three test blocks）, at the standard conditions（Temperature is 3 °C of 20 scholar, relative humidity 60-80%）Carry out
Maintenance.
5）After die-filling maintenance 7d, by the anti-folding mould form removal of one group of resistance to compression and one group, resistance to compression can be obtained（7.07×7.07×
7.07cm square）And anti-folding（4×4×16cm）The standard specimen of strength test.On pressure experiment machine to standard specimen into
The anti-foldings of row 7d and compression strength detection.
6）After die-filling maintenance 28d, by the anti-folding mould form removal of second group of resistance to compression and second group, resistance to compression can be obtained（7.07×7.07
× 7.07cm squares）And anti-folding（4×4×16cm）The standard specimen of strength test.To standard specimen on pressure experiment machine
Carry out the anti-foldings of 28d and compression strength detection.
After tested, reference block made from the inorganic compounding injecting paste material of the present embodiment, presetting period 5.5h, is marked wet under condition
It is respectively 36MPa and 51MPa to support 7d and 28d uniaxial compressive strength averages, sees Fig. 3, residual strength 20MPa or so；Mark wet under condition
It is respectively 3.71MPa and 6.51MPa to support 7d and 28d flexural strength averages, sees Fig. 4.
Embodiment 4
The concrete operation step for preparing inorganic compounding injecting paste material is as follows：
1）Under room temperature, dry base-material 1200g, PO52.5 cement 400g, flyash 400g and chopped carbon fiber 2g are weighed respectively,
Base-material：PO52.5 cement：Flyash：Chopped carbon fiber=3:1:1:0.005；Base-material is by 900 g of PO42.5 portland cements, silicon
96 g of ashes, sulphate aluminium cement 96g, 90 g of slag powders, water-reducing agent 8.4g and 9.6 g of plastic expansion agent be uniformly mixed it is obtained,
PO42.5 portland cements：Wollastonite powder：Sulphate aluminium cement：Slag powders：Water-reducing agent：Plastic expansion agent==75:8:8:7.5:
0.7:0.8。
2）Each raw material weighed is poured into stirring container successively, is stirred evenly.
3）By the ratio of mud 0.315:1 weighs water 630g, is slowly added to above-mentioned stirring container, while adding waterside to stir；After adding
Continue to be sufficiently stirred 15min, obtain inorganic compounding injection slurry.
4）According to GB/T 17671-1999 Test method for strength of hydraulic cement mortar（ISO methods）With GB/T 50107-2010 coagulations
The slurries stirred evenly are poured into two groups of crush test moulds by native ruggedness test evaluation criteria respectively（Every group of three test blocks）With two
The anti-folding experiment mould of group（Every group of three test blocks）, at the standard conditions（Temperature is 3 °C of 20 scholar, relative humidity 60-80%）Carry out
Maintenance.
5）After die-filling maintenance 7d, by the anti-folding mould form removal of one group of resistance to compression and one group, resistance to compression can be obtained（7.07×7.07×
7.07cm square）And anti-folding（4×4×16cm）The standard specimen of strength test.On pressure experiment machine to standard specimen into
The anti-foldings of row 7d and compression strength detection.
6）After die-filling maintenance 28d, by the anti-folding mould form removal of second group of resistance to compression and second group, resistance to compression can be obtained（7.07×7.07
× 7.07cm squares）And anti-folding（4×4×16cm）The standard specimen of strength test.To standard specimen on pressure experiment machine
Carry out the anti-foldings of 28d and compression strength detection.
After tested, reference block made from the inorganic compounding injecting paste material of the present embodiment, presetting period 5.5h；Mark wet under condition
It is respectively 39MPa and 48MPa, residual strength 20MPa or so to support 7d and 28d uniaxial compressive strength averages；Mark condition under wet foster 7d and
28d flexural strength averages are respectively 4.89MPa and 6.2MPa.
Above example is not intended to limit the invention, and that is made within the spirit and principles of the invention any repaiies
Change, equivalent substitution and improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
- A kind of 1. inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault, it is characterised in that：By base-material, fine coal Ash and chopped carbon fiber are uniformly mixed obtained siccative at normal temperatures, and the siccative is inorganic compounding injecting paste material；Wherein：Base-material with The mass ratio of flyash is 2~4.5:1, and base-material and flyash are component A, the mass ratio of chopped carbon fiber and component A is 0.0007~0.0013:1；In use, water and siccative in mass ratio 0.3~0.4:1 is mixed evenly, up to inorganic compounding injection slurry；The technical characteristic parameter of the inorganic compounding injection slurry is as follows：Presetting period is more than 5h；28d uniaxial compressive strengths are not less than 45MPa, and flexural strength is not less than 7 MPa；Remaining pressure resistance Spend more conventional PO42.5 cement injections material and improve more than 30%.
- A kind of 2. inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault, it is characterised in that：By base-material, silicic acid Salt cement, flyash and chopped carbon fiber are uniformly mixed obtained siccative at normal temperatures, and the siccative is inorganic compounding injecting paste material； Wherein：The mass values scope of base-material, portland cement and flyash is 3:1:1~8:1:1, and base-material, portland cement and Flyash is component A, and chopped carbon fiber additive amount is 0.0007~0.0013 with component A mass ratio:1；In use, water and siccative in mass ratio 0.3~0.4:1 is mixed evenly, up to inorganic compounding injection slurry；The technical characteristic parameter of the inorganic compounding injection slurry is as follows：Presetting period is more than 5h；28d uniaxial compressive strengths are not less than 45MPa, and flexural strength is not less than 6MPa；Residual Compressive Strength More conventional PO42.5 cement injections material improves more than 30%.
- 3. a kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault according to claim 1 or claim 2, its It is characterized in that：The base-material is by 0.4~0.9 part of Portland cement, 0.01~0.1 part of wollastonite powder, sulphate aluminium cement 0.01~0.1 part, 0.01~0.1 part of slag powders, 0.005~0.01 part of water-reducing agent, 0.005~0.01 part of plastic expansion agent mixing Uniformly it is made.
- 4. a kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault according to claim 1 or claim 2, its It is characterized in that：The portland cement strength grade is not less than 42.5, and initial set is not less than 45min, and final set is not more than 390min, compares surface Product is not less than 300m2/kg；4 ~ 6mm of length of the chopped carbon fiber, 7 μm of filament diameter, intensity 4900 MPa, modulus 240GPa, elongation percentage be not small In 2.1%；Described 0.4~0.6%, 45 μm of square hole screen over-sizes of second class powered coal ash water content are not more than 25%.
- 5. a kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault according to claim 1 or claim 2, its It is characterized in that：In use, adding water while stirring into the siccative, continuously stir 15~20 minutes, that is, obtain inorganic compounding note Slurries.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097970.8A CN107954668B (en) | 2017-11-09 | 2017-11-09 | A kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault |
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| CN201711097970.8A CN107954668B (en) | 2017-11-09 | 2017-11-09 | A kind of inorganic compounding injecting paste material for the advanced pre-reinforcement of Coal Face Passing Through Fault |
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| Publication Number | Publication Date |
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| CN107954668A true CN107954668A (en) | 2018-04-24 |
| CN107954668B CN107954668B (en) | 2019-10-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356583A (en) * | 2018-12-10 | 2019-02-19 | 大同煤矿集团有限责任公司 | A kind of coal-mining method under complex geological condition |
| CN111810197A (en) * | 2019-08-27 | 2020-10-23 | 淮南矿业(集团)有限责任公司 | Pre-grouting reinforcement method for fault structural zone of working face |
| CN112343605A (en) * | 2020-11-05 | 2021-02-09 | 西南科技大学 | Rock burst prevention tunnel excavation supporting method based on reduced-scale modified pressure arch |
| CN114180895A (en) * | 2021-10-18 | 2022-03-15 | 安徽华耀科力工程科技有限公司 | Production process of inorganic composite grouting material |
| CN115108790A (en) * | 2022-06-06 | 2022-09-27 | 安徽华耀科力工程科技有限公司 | Mineral inorganic filling reinforcing material and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110818368A (en) * | 2019-10-24 | 2020-02-21 | 山西澳华工矿山支护科技有限公司 | Super-strong mineral inorganic reinforcing material with good permeability and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236863A (en) * | 2015-09-16 | 2016-01-13 | 长安大学 | Expansive type high-fluidity cement-base pavement slip-casting reinforcing material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105236863A (en) * | 2015-09-16 | 2016-01-13 | 长安大学 | Expansive type high-fluidity cement-base pavement slip-casting reinforcing material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356583A (en) * | 2018-12-10 | 2019-02-19 | 大同煤矿集团有限责任公司 | A kind of coal-mining method under complex geological condition |
| CN111810197A (en) * | 2019-08-27 | 2020-10-23 | 淮南矿业(集团)有限责任公司 | Pre-grouting reinforcement method for fault structural zone of working face |
| CN111810197B (en) * | 2019-08-27 | 2022-04-08 | 淮南矿业(集团)有限责任公司 | Pre-grouting reinforcement method for fault structural zone of working face |
| CN112343605A (en) * | 2020-11-05 | 2021-02-09 | 西南科技大学 | Rock burst prevention tunnel excavation supporting method based on reduced-scale modified pressure arch |
| CN114180895A (en) * | 2021-10-18 | 2022-03-15 | 安徽华耀科力工程科技有限公司 | Production process of inorganic composite grouting material |
| CN115108790A (en) * | 2022-06-06 | 2022-09-27 | 安徽华耀科力工程科技有限公司 | Mineral inorganic filling reinforcing material and preparation method thereof |
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| CN107954668B (en) | 2019-10-22 |
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