CN103898899A - Equipment and method for long-time stable-pressure chemical grouting and chemical grouting slurry - Google Patents
Equipment and method for long-time stable-pressure chemical grouting and chemical grouting slurry Download PDFInfo
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- CN103898899A CN103898899A CN201410116769.XA CN201410116769A CN103898899A CN 103898899 A CN103898899 A CN 103898899A CN 201410116769 A CN201410116769 A CN 201410116769A CN 103898899 A CN103898899 A CN 103898899A
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Abstract
The invention relates to equipment and method for long-time stable-pressure chemical grouting and chemical grouting slurry. The equipment and the method for long-time stable-pressure chemical grouting are simple in structure, convenient for processing and easy to operate, so as to permeate and reinforce weak bed rock. The equipment for long-time stable-pressure chemical grouting is characterized by comprising a platform scale, a slurry preparing bucket, a slurry supply pump, a pressure storage tank and a gas cylinder, the slurry preparing bucket is communicated with the pressure storage tank sequentially via a slurry suction pipe, the slurry supply pump and a slurry supply pipe, the gas cylinder is communicated with the pressure storage tank via a gas pressure stabilizing valve and a high-pressure pipe, a grouting pipe is connected on the pressure storage tank, and a storage tank pressure gauge for measuring internal pressure of the pressure storage tank is mounted on the pressure storage tank. The slurry preparing bucket and the pressure storage tank are both disposed on the platform scale. The equipment, the method and the chemical grouting slurry are applicable to chemical grouting technology in hydraulic and hydro-power engineering.
Description
Technical field
The present invention relates to a kind of equipment, method and chemical grouting liquid used for long-time voltage stabilizing chemical grouting.Be applicable to the chemical grouting technique in Hydraulic and Hydro-Power Engineering, the Essential Chemistry perfusion and the lab simulation perfusion that are specially adapted to weak basement rock are used.
Background technology
Chemical grouting method is that inorganic certain chemical material or organic material are mixed with to true solution, poured in stratum or gap with force feed equipment such as chemical grouting pumps, make its infiltration, diffusion, gelling or solidify, to increase formation strength, reduce stratum permeability, prevent stratum deformation and to carry out a underpinning, waterproofing and leakage-stopping and the concrete defect Strengthening Technology of concrete structure crack repairing.Be that chemical grouting is that chemistry combines with engineering, applied chemistry science, chemical grouting material and engineering are carried out basis and concrete defect and are processed reinforcement and strengthening, water seepage prevention, guarantee engineering carry out smoothly or so as to a technology of raising workmanship.
Western China, complex geologic conditions, especially in stratum, can contain the lot of unstable rock stratum such as chlorite schist, diabase, argillization folder rock, the intensity of these soft stratums own is not high, and meet cement, for there is serious harm in construction, therefore need first soft stratum to be carried out to consolidation by grouting processing, to ensure follow-up construction safety.Conventional cement-sodium silicate grouting cannot be penetrated in this type of rock stratum, need to carry out chemical grouting to it, and this type of chemical grouting material require viscosity low, can at least want tens hours by infusion time, to ensure that reperfusion serosity is to being filled with the abundant infiltration of rock stratum.Need suitable method for filling to coordinate perfusion simultaneously, the perfusion a couple of days that can continue, and convenient and strength-saving.
Summary of the invention
The technical problem to be solved in the present invention is: for the problem of above-mentioned existence, provide a kind of equipment, method for long-time voltage stabilizing chemical grouting simple in structure, easy to process, easy and simple to handle, with the weak basement rock of penetration reinforcement.
For the problem of above-mentioned existence, provide the chemical grouting liquid for long-time voltage stabilizing chemical grouting that a kind of low viscosity, permeance property are good.
The technical solution adopted in the present invention is: a kind of equipment for long-time voltage stabilizing chemical grouting, it is characterized in that: comprise platform balance, bucket with slurry, slurry supply pump, pressure vessel and gas cylinder, described bucket with slurry is communicated with pressure vessel through pulp-absorbing pipe, slurry supply pump and flow inlet successively, described gas cylinder is communicated with described pressure vessel through gas pressure maintaining valve, high-voltage tube, on this pressure vessel, connect grout pipe, and the pressure of storage tank table for detection of pressure vessel internal pressure is installed; Described bucket with slurry and pressure vessel are all positioned on described platform balance.
Apply the method that described equipment is in the milk, it is characterized in that step is as follows:
A, chemical grouting liquid is poured in bucket with slurry, started slurry supply pump slurries are driven into pressure vessel;
B, open gas pressure maintaining valve and slowly promote injection pressure, gas in gas cylinder enters into pressure vessel by high-voltage tube, carry out slurry filling thereby the chemical grouting liquid in pressure vessel is pressed into grout pipe, in filling process by pressure of storage tank table observed and recorded grouting pressure;
C, the Quality control showing by platform balance, when grout absorption reaches after setting, stabilizing gas pressure maintaining valve, Continuous Perfusion under steady pressure, the calculating amount of pouring into, add in time chemical grouting liquid in bucket with slurry, guaranteeing has enough slurries in grouting equipment, and below the slurries liquid level of the one end that guarantees pulp-absorbing pipe in bucket with slurry.
If slurries deficiency in pressure vessel, starts slurry supply pump, the slush pump for subsequent use in bucket with slurry is delivered in pressure vessel, complete not lasting grouting intermittently.
The chemical grouting liquid that described grouting method is used, is characterized in that: described chemical grouting liquid is made up of A, B two components,
Wherein A component comprises:
Epoxy resin 50-70 weight portion,
Thinner 20-30 weight portion,
Surfactant 1-2 weight portion,
Flexibilizer 0.5-2 weight portion;
B component comprises:
Aliphatic amine curing compound 30-70 weight portion,
Polyamide-based curing compound 15-30 weight portion,
Accelerator 1-5 weight portion;
Get mass ratio A:B=5～8:1 and stir, obtain described chemical grouting liquid.
Described epoxy resin is bisphenol A type epoxy resin, is specially E-51, E-44, E-55 or E-42 epoxy resin.
Described thinner is by two or more composite forming in butanone, cyclohexanone, dimethylbenzene, n-butanol, styrene and butyl glycidyl ether, polypropylene glycol diglycidyl ether, benzyl glycidyl ether, C12-14 fat glycidol ether, BDDE.
Described surfactant is KH-550, KH-560 or KH-580 silane coupler.
Described flexibilizer is dioctyl phthalate DOP, dibutyl phthalate DBP or carboxyl end of the liquid acrylonitrile-butadiene rubber.
Described aliphatic amine curing compound is one or more composite in vinyl triamine DETA, triethylene tetramine TETA, polyethylene polyamine PEPA, diethyl propylamine DEAPA, trimethylhexamethylenediamine TMD, hexamethylene diamine adduct, trimethyl hexamethylene diamine.
Described polyamide curing agent is that one or both of 200 Versamids, 300 Versamids are composite.
The invention has the beneficial effects as follows: 1, grouting equipment design of the present invention is very simple, and the job site arduous in condition also easily processes and make, and operation and cleaning are simple, left-hand seat fast.2, compared with conventional grouting equipment, lasting grouting equipment can continue grouting under a steady pressure, and pressure controls by gas pressure maintaining valve, stable, quick.3, chemical grouting liquid low viscosity in the present invention, permeance property are good, continue grouting equipment lasting for slurry under, can within continuous several days, keep low viscosity state, be better penetrated in weak basement rock, reach the object of abundant infiltration reperfusion reinforcement.
Accompanying drawing explanation
Fig. 1 is the structural representation of grouting equipment in the present invention.
The specific embodiment
As shown in Figure 1, in the present embodiment, grouting equipment comprises platform balance, bucket 11 with slurry, slurry supply pump 9, pressure vessel 4 and gas cylinder 1, wherein pulp-absorbing pipe 10 one end are put into bucket with slurry 11 inner bottom parts, another termination slurry supply pump 9 charging apertures, and slurry supply pump 9 discharging openings are communicated with pressure vessel 4 bottoms through flow inlet 8.Gas cylinder 1 is communicated with described pressure vessel 4 upper ends through gas pressure maintaining valve 2, high-voltage tube 12, is connected to grout pipe 7 on this pressure vessel, and the pressure of storage tank table 3 for detection of pressure vessel 4 internal pressures is installed.Each interface is connected, and check that whether each interface is closely air tight, and pressure vessel 4 and bucket 11 with slurry are together placed on the enough platform balances of range.
In the present embodiment, apply the method that grouting equipment carries out long-time steady pressure chemical grouting, its step is as follows:
A, chemical grouting liquid is poured in bucket with slurry 11, started slurry supply pump 9 slurries are driven into pressure vessel 4;
B, open gas pressure maintaining valve 2 and slowly promote injection pressure, gas in gas cylinder 1 enters into pressure vessel 4 by high-voltage tube 12, carry out slurry filling thereby the chemical grouting liquid in pressure vessel 4 is pressed into grout pipe 7, in filling process by pressure of storage tank table 3 observed and recorded grouting pressure;
C, the Quality control showing by platform balance, when grout absorption reaches after the desired value of regulation, stabilizing gas pressure maintaining valve 2, Continuous Perfusion under steady pressure, the calculating amount of pouring into, add in time chemical grouting liquid in bucket 11 with slurry, guaranteeing has enough slurries in grouting equipment, and below the slurries liquid level of the one end that guarantees pulp-absorbing pipe 10 in bucket 11 with slurry.
If slurries deficiency in pressure vessel 4, starts slurry supply pump 9, the slush pump for subsequent use in bucket with slurry 11 is delivered in pressure vessel 4, complete not lasting grouting intermittently.
In the present embodiment, chemical grouting liquid used is made up of A, B two components,
Formula 1: wherein A component comprises: epoxy resin 60 weight portions, reactive diluent 25 weight portions, surfactant 1.5 weight portions, flexibilizer 1.3 weight portions;
B component comprises: aliphatic amine curing compound 50 weight portions, polyamide-based curing compound 23 weight portions, accelerator 3 weight portions.
Get mass ratio A:B=6:1 and stir, can obtain the low viscosity chemistry grouting agent of different operating time.Its property indices is in table 1.
Table 1
Formula 2: wherein A component comprises: epoxy resin 50 weight portions, thinner 20 weight portions, surfactant 1 weight portion, flexibilizer 0.5 weight portion;
B component comprises: aliphatic amine curing compound 30 weight portions, polyamide-based curing compound 15 weight portions, accelerator 1 weight portion.
Get mass ratio A:B=5:1 and stir, can obtain the low viscosity chemistry grouting agent of different operating time.
Formula 3: wherein A component comprises: epoxy resin 70 weight portions, reactive diluent 30 weight portions, surfactant 2 weight portions, flexibilizer 2 weight portions;
B component comprises: aliphatic amine curing compound 70 weight portions, polyamide-based curing compound 30 weight portions, accelerator 5 weight portions.
Get mass ratio A:B=8:1 and stir, can obtain the low viscosity chemistry grouting agent of different operating time.
A, B mix in proportion rear viscosity and are less than 15mPas, and what keep low viscosity (being less than 100mPas) can be greater than 20 hours by infusion time, and within 28 days, compressive strength is greater than 70MPa.
In the present embodiment, epoxy resin is bisphenol A type epoxy resin (E-51, E-44, E-55, E-42 epoxy resin).Thinner is for by two or more composite forming in the non-activated thinners such as butanone, cyclohexanone, dimethylbenzene, n-butanol, styrene and butyl glycidyl ether, polypropylene glycol diglycidyl ether, benzyl glycidyl ether, the fatty glycidol ether of C12-14, BDDE isoreactivity thinner.In this example, surfactant is KH-550, KH-560 or KH-580 silane coupler.Flexibilizer is dioctyl phthalate DOP, dibutyl phthalate DBP or carboxyl end of the liquid acrylonitrile-butadiene rubber.Aliphatic amine curing compound is one or more composite of vinyl triamine DETA, triethylene tetramine TETA, polyethylene polyamine PEPA, diethyl propylamine DEAPA, trimethylhexamethylenediamine TMD, hexamethylene diamine adduct, trimethyl hexamethylene diamine.Polyamide curing agent is that one or both of 200 Versamids, 300 Versamids are composite.
The present embodiment adopts a set of sustainable grouting equipment, control injection pressure by stablizing air pressure, grouting equipment itself only need to have the jumbo slurries place of depositing, be equipped with the lasting slurry feeding devices such as bucket with slurry and slurry supply pump simultaneously, when use, bucket with slurry and pressure vessel are placed on the table scale that measures quality to calculate groundwater increment simultaneously.Simultaneously, develop low viscosity chemistry grouting liquid a kind of low viscosity, high osmosis, the long and adjustable infusion time of infusion time, coordinate the sustainable perfusion equipment of steady pressure, the weak basement rock that can fully make chemical grout be penetrated into reluctant chance cement (refers to that constituent is the basement rock of chlorite schist, mud stone etc., mechanical strength and modulus of deformation are all less compared with common basement rock, easily meet cement) in, reach complete consolidation effect, rather than be only penetrated into the top layer of rock stratum.
The present embodiment is for lab simulation grouting test, and the chlorite schist of cement is met in perfusion, and acquired results is:
1,, with under equal pressure, the diffusion radius of chemical grouting liquid in chlorite schist increased by 0.5～0.8m;
2,, with under equal pressure, chemical grouting liquid grout absorption has increased by 8～16L/m;
3, the mechanical property after perfusion obviously increases: compressive strength has increased by 10～18MPa; The vertical velocities Vp m average of rock mass sound wave has increased by 1000～1500m/s; Rock mass coefficient of softening has increased by 0.1～0.18.
Claims (10)
1. the equipment for long-time voltage stabilizing chemical grouting, it is characterized in that: comprise platform balance, bucket (11), slurry supply pump (9) with slurry, pressure vessel (4) and gas cylinder (1), described bucket with slurry (11) is communicated with pressure vessel (4) through pulp-absorbing pipe (10), slurry supply pump (9) and flow inlet (8) successively, described gas cylinder (1) is communicated with described pressure vessel (4) through gas pressure maintaining valve (2), high-voltage tube (12), on this pressure vessel, connect grout pipe (7), and the pressure of storage tank table (3) for detection of pressure vessel (4) internal pressure is installed; Described bucket with slurry (11) and pressure vessel (4) are all positioned on described platform balance.
2. application rights requires the method that described in 1, equipment is in the milk, and it is characterized in that step is as follows:
A, chemical grouting liquid is poured in bucket with slurry (11), started slurry supply pump (9) slurries are driven into pressure vessel (4);
B, open gas pressure maintaining valve (2) and slowly promote injection pressure, gas in gas cylinder (1) enters into pressure vessel (4) by high-voltage tube (12), chemical grouting liquid in pressure vessel (4) is pressed into grout pipe (7) thus carry out slurry filling, in filling process by pressure of storage tank table (3) observed and recorded grouting pressure;
C, the Quality control showing by platform balance, when grout absorption reaches after setting, stabilizing gas pressure maintaining valve (2), Continuous Perfusion under steady pressure, the calculating amount of pouring into, add in time chemical grouting liquid in bucket with slurry (11), guaranteeing has enough slurries in grouting equipment, and below the slurries liquid level of the one end that guarantees pulp-absorbing pipe (10) in bucket with slurry (11).
3. method according to claim 2, is characterized in that: if slurries deficiency in pressure vessel (4) is started slurry supply pump (9), the slush pump for subsequent use in bucket with slurry (11) is delivered in pressure vessel (4), completed not lasting grouting intermittently.
4. a grouting method chemical grouting liquid used described in claim 2, is characterized in that: described chemical grouting liquid is made up of A, B two components,
Wherein A component comprises:
Epoxy resin 50-70 weight portion,
Thinner 20-30 weight portion,
Surfactant 1-2 weight portion,
Flexibilizer 0.5-2 weight portion;
B component comprises:
Aliphatic amine curing compound 30-70 weight portion,
Polyamide-based curing compound 15-30 weight portion,
Accelerator 1-5 weight portion;
Get mass ratio A:B=5～8:1 and stir, obtain described chemical grouting liquid.
5. chemical grouting liquid according to claim 4, is characterized in that: described epoxy resin is bisphenol A type epoxy resin, is specially E-51, E-44, E-55 or E-42 epoxy resin.
6. chemical grouting liquid according to claim 4, it is characterized in that: described thinner is by two or more composite forming in butanone, cyclohexanone, dimethylbenzene, n-butanol, styrene and butyl glycidyl ether, polypropylene glycol diglycidyl ether, benzyl glycidyl ether, C12-14 fat glycidol ether, BDDE.
7. chemical grouting liquid according to claim 4, is characterized in that: described surfactant is KH-550, KH-560 or KH-580 silane coupler.
8. chemical grouting liquid according to claim 4, is characterized in that: described flexibilizer is dioctyl phthalate DOP, dibutyl phthalate DBP or carboxyl end of the liquid acrylonitrile-butadiene rubber.
9. chemical grouting liquid according to claim 4, is characterized in that: described aliphatic amine curing compound is one or more composite in vinyl triamine DETA, triethylene tetramine TETA, polyethylene polyamine PEPA, diethyl propylamine DEAPA, trimethylhexamethylenediamine TMD, hexamethylene diamine adduct, trimethyl hexamethylene diamine.
10. chemical grouting liquid according to claim 4, is characterized in that: described polyamide curing agent is that one or both of 200 Versamids, 300 Versamids are composite.
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| CN201410116769.XA CN103898899A (en) | 2014-03-26 | 2014-03-26 | Equipment and method for long-time stable-pressure chemical grouting and chemical grouting slurry |
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| CN201410116769.XA CN103898899A (en) | 2014-03-26 | 2014-03-26 | Equipment and method for long-time stable-pressure chemical grouting and chemical grouting slurry |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415069Y (en) * | 2000-03-17 | 2001-01-17 | 株洲工学院 | Concrete structure crack grouting device |
| CN1419013A (en) * | 2002-12-30 | 2003-05-21 | 李旺雷 | Cement grouting leakage stopping technology in which controlled cement slurry capable of making water move upward |
| JP2005314940A (en) * | 2004-04-28 | 2005-11-10 | Kyokado Eng Co Ltd | Chemical grouting device |
| CN101109231A (en) * | 2007-08-20 | 2008-01-23 | 中国水利水电第七工程局 | Method and device for repairing concrete gap with chemical grout |
| CN102070873A (en) * | 2010-12-21 | 2011-05-25 | 中国建筑科学研究院 | Environment-friendly flexible epoxy resin grouting material |
| CN103114601A (en) * | 2013-02-17 | 2013-05-22 | 广州市吉特高喷灌浆工程有限公司 | Cut-off method of rapid-hardening high-spray grouting of strong leakage stratum and device thereof |
| CN203808046U (en) * | 2014-03-26 | 2014-09-03 | 杭州国电大坝安全工程有限公司 | Equipment for long-time and pressure-stabilized chemical grouting |
-
2014
- 2014-03-26 CN CN201410116769.XA patent/CN103898899A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415069Y (en) * | 2000-03-17 | 2001-01-17 | 株洲工学院 | Concrete structure crack grouting device |
| CN1419013A (en) * | 2002-12-30 | 2003-05-21 | 李旺雷 | Cement grouting leakage stopping technology in which controlled cement slurry capable of making water move upward |
| JP2005314940A (en) * | 2004-04-28 | 2005-11-10 | Kyokado Eng Co Ltd | Chemical grouting device |
| CN101109231A (en) * | 2007-08-20 | 2008-01-23 | 中国水利水电第七工程局 | Method and device for repairing concrete gap with chemical grout |
| CN102070873A (en) * | 2010-12-21 | 2011-05-25 | 中国建筑科学研究院 | Environment-friendly flexible epoxy resin grouting material |
| CN103114601A (en) * | 2013-02-17 | 2013-05-22 | 广州市吉特高喷灌浆工程有限公司 | Cut-off method of rapid-hardening high-spray grouting of strong leakage stratum and device thereof |
| CN203808046U (en) * | 2014-03-26 | 2014-09-03 | 杭州国电大坝安全工程有限公司 | Equipment for long-time and pressure-stabilized chemical grouting |
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Application publication date: 20140702 |