CN108409227A - Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method - Google Patents
Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method Download PDFInfo
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- CN108409227A CN108409227A CN201810108288.2A CN201810108288A CN108409227A CN 108409227 A CN108409227 A CN 108409227A CN 201810108288 A CN201810108288 A CN 201810108288A CN 108409227 A CN108409227 A CN 108409227A
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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
- C04B28/04—Portland 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
- 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
- C04B28/14—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 calcium sulfate 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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 abandoning slurry using slurry shield to abandon sand co-formulated Testing of Grouting Material Behind Segments method, include the following steps：Step 1：The discarded slurry that slurry shield grout outlet generates is sent by sludge pipe to screening machine and is sieved, level-one sieve and two level screen out the particle more than 0.05mm；Step 2：By abandoning after sand mixing for replacing sand in first wife's ratio in Testing of Grouting Material Behind Segments after level-one sieve and two level sieve, remaining fine grained discarded slurry replaces bentonite and water in first wife's ratio after screening, adds cement and coal ash for manufacturing into Testing of Grouting Material Behind Segments.The present invention can reduce the dosage of raw material in grouting behind shaft or drift lining mortar, mainly sand is abandoned for replacing the sand in grouting behind shaft or drift lining mortar in Testing of Grouting Material Behind Segments what slurry shield generated, discarded slurry replaces bentonite and water in first wife's ratio, and the Testing of Grouting Material Behind Segments good fluidity, bleeding is few, early strength is high, can reduce the slurry shield mud contamination that brings of construction and the problem of dregs is stacked.
Description
Technical field
The present invention relates to inorganic non-metallic construction material class fields.It is more particularly related to utilize slurry shield
It abandons slurry and abandons sand co-formulated Testing of Grouting Material Behind Segments method.
Background technology
With the continuous development of urban rail transit in China, the construction of subway enters a peak period, slurry shield work(
Method is to wear the most widely used construction method in Jiang Yuehai tunnel constructions.In muddy water shield work progress, mud is by sieving
System unavoidably generates a large amount of dregs and abandons sand, and the outward transport processing for abandoning sand needs higher freight, also faces simultaneously
The problem that mud contamination and a large amount of dregs are stacked.
Slurry shield tunnel construction will produce a large amount of discarded slurry, and mud is sent to screening machine by sludge pipe and sieved
Point, it is divided into pre-sifted, level-one sieve and two level sieve.Pre-sifted mainly screens out the bulky grain in mud, and level-one sieve and two level screen out big portion
Divide the particle more than 0.05mm, remaining fine grained discarded slurry that press filtration is needed to handle.After by level-one sieve and two level sieve mixing
Sand for replacing sand in first wife's ratio in Testing of Grouting Material Behind Segments, discarded slurry is replaced into bentonite and water in first wife's ratio, as far as possible
To be a kind of technique works of both economically and environmentally beneficial Reuse of Throwaway Material using the obsolete material of slurry shield.
One of mortar laminated the main reason for being Testing of Grouting Material Behind Segments plugging, mortar plugging not only cause the economic damage such as repair
It loses, has an effect on construction speed, schedule delays.Abandon that sand particle is thinner, the viscosity of discarded slurry is higher, and preparing Testing of Grouting Material Behind Segments can
It is mortar laminated to effectively reduce, avoid during grouting behind shaft or drift lining mortar from occurring because of the phenomenon that layering plugging.
Invention content
It is an object of the present invention to provide abandoning slurry using slurry shield to abandon sand co-formulated Testing of Grouting Material Behind Segments method, subtract
The dosage of raw material in few grouting behind shaft or drift lining mortar mainly abandons sand for replacing wall in Testing of Grouting Material Behind Segments what slurry shield generated
Sand in grouting behind shaft or drift lining mortar, discarded slurry replace bentonite and water in first wife's ratio, reduce the dregs heap that shield grouting behind shaft or drift lining is brought
The problem of putting.
In order to realize these purposes and other advantages according to the present invention, provides to abandon slurry using slurry shield and abandon sand and combine
Testing of Grouting Material Behind Segments method is prepared, is included the following steps：
Step 1：The discarded slurry that slurry shield grout outlet generates is sent by sludge pipe to screening machine and is sieved, according to
Secondary progress pre-sifted, level-one sieve and two level sieve, pre-sifted screen out the bulky grains such as cobble, gravel in mud, level-one screening and two level sieve
Sub-sieve removes the particle more than 0.05mm；
Step 2：Pass through abandoning after sand mixing for being replaced in first wife's ratio in Testing of Grouting Material Behind Segments after level-one sieve and two level sieve
Sand, remaining fine grained discarded slurry replaces bentonite and water in first wife's ratio after screening, after adding cement and coal ash for manufacturing wall-forming
Injecting paste material.
Preferably, Testing of Grouting Material Behind Segments includes following component：Cement, flyash abandon sand, abandon slurry, the weight of each component
Proportioning is：Cement 100-300kg/m3, flyash 300-500kg/m3, abandon sand 700-1700kg/m3, abandon slurry 200-500kg/m3。
Preferably, sand is abandoned by 1 after level-one screening and two level are sieved：1~2：1 is used in mixed way, and can also be mixed
A small amount of river sand.Testing of Grouting Material Behind Segments can be used for the synchronous grouting mortar of slurry shield or EPB shield tunneling.
Preferably, cement is p42.5 grades of common or lumnite cements, and flyash is a second class powered coal ash.
Preferably, further include step 3：Mechanical mixture is carried out according to ratio requirement, and is stirred 2~3 minutes, is stored up immediately
It deposits to slurry storage tank, it is to be transported to be irrigated to shield scene.
Preferably, the lumnite cement includes the following component of percentage：Portland cement is ripe
Material 42~68%, mixing slag 16~33%, gypsum 15~22%, retarder 1~3%.
Preferably, the retarder includes following component by weight：20~40 parts of industrial waste gypsum, it is compound
20~40 parts of phosphate, 16~30 parts of chitin fiber, 16~30 parts of potato modified starch.
Preferably, the preparation method of the retarder is as follows：
Step 1：Industrial waste gypsum and composite phosphate are added in citric acid solution according to the ratio and dissolved, is filtered out miscellaneous
Matter obtains the first filtrate；
Step 2：Chitin fiber and potato modified starch are also added in citric acid solution dissolve according to the ratio, is filtered
Except impurity, the second filtrate is obtained；
Step 3：The first above-mentioned filtrate and the second filtrate are uniformly mixed, are added in 75% ethanol water, and
98 DEG C are warming up to, 10min is kept the temperature；
Step 4：The liquid that step 3 is obtained carries out press filtration processing, obtains moisture content and is 30% filter cake, and air-dries and be
Pulverulent solids, the as described retarder.
Preferably, the preparation method of the lumnite cement is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ±
10m2/kg；
Step 2：Mixture after grinding is placed in mixing vessel, places air blower in the bottom of mixing vessel, upwards
Do not stop air blast, the gas of air blast is carbon dioxide, while at the top of mixing vessel and side by microwave to mixing vessel
Interior mixture is handled, and processing time is 20~30min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through water steaming incessantly in the mixing container
Gas stops after being passed through 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the fast hardening portland water
Mud.
The present invention includes at least following advantageous effect：
1, Testing of Grouting Material Behind Segments of the invention includes cement, flyash, abandons sand, abandons slurry, changes in traditional material and is added
A large amount of bentonitic features, the sand abandoned in the conventional Testing of Grouting Material Behind Segments of sand replacement after being sieved by shield, utilize slurry shield
Bentonite and water in the former Testing of Grouting Material Behind Segments of discarded slurry replacement form novel Testing of Grouting Material Behind Segments, are a kind of not only economic but also rings
The technique works of the Reuse of Throwaway Material of guarantor.
2, Testing of Grouting Material Behind Segments of the invention has the advantages that be made simple for process, easy-operating, while the mortar prepared point
Depth is small, bleeding is small, working performance is good, strength character is good, can greatly reduce the cost of Testing of Grouting Material Behind Segments, saves
The expense of slurry processing is transported outward and abandoned to slurry shield dregs, extra to abandon sand and be transported to EPB shield tunneling application, has warp well
Benefit of helping and environmental benefit.
3, sand particle of abandoning of the invention more carefully belongs to ultra fine sand, and the viscosity of discarded slurry is higher, prepares Testing of Grouting Material Behind Segments
Stability can effectively reduce well mortar laminated, and mortar is avoided during grouting behind shaft or drift lining to occur because of the phenomenon that layering plugging.
4, it is of the invention abandon sand and abandon slurry and prepare grouting behind shaft or drift lining mortar belong to waste recycling, this is for saving nature money
Pollution is reduced in source, solves the problems, such as that raw material during preparing injecting paste material are deficient significant.
5, production cost of the present invention is low, can meet the requirement of grouting equipment, while required construction procedure is simple and practicable, no
There are technical difficulty, therefore low engineering cost, effect is good, and construction management is convenient, Land-Subsidence Control allowable range it
It is interior.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail, to enable those skilled in the art with reference to specification
Word can be implemented according to this.
It should be noted that experimental method described in following embodiments is unless otherwise specified conventional method, institute
Reagent and material are stated, unless otherwise specified, is commercially obtained.
Embodiment 1
It is a kind of using slurry shield abandon slurry and abandon sand prepare Testing of Grouting Material Behind Segments method, preparation process includes the following steps：
Step 1：The discarded slurry that slurry shield grout outlet generates is sent by sludge pipe to screening machine and is sieved, point
The bulky grain in mud is mainly screened out for pre-sifted, level-one sieve and two level sieve, pre-sifted, such as cobble, gravel, level-one sieve and two level sieve sieve
Except most of particle for being more than 0.05mm；
Step 2：By abandoning sand according to 1 after level-one sieve and two level sieve:For being replaced in Testing of Grouting Material Behind Segments after 1 mixing
Sand in first wife's ratio, it is 700-1700kg/m to abandon sand weight proportion3, remaining fine grained discarded slurry replaces swollen in first wife's ratio after screening
Profit soil and water, it is 200-500kg/m to abandon slurry weight proportion3, then cement 100-300kg/m is added by weight ratio3, flyash
300-500kg/m3, Testing of Grouting Material Behind Segments is made；
Step 3：Mechanical mixture is carried out according to ratio requirement, and is stirred 2 minutes, is stored immediately to slurry storage tank, it is to be shipped
It is defeated to be irrigated to shield scene, wherein it is 27% to abandon sand clay content.
Testing of Grouting Material Behind Segments each group distribution ratio and performance see below Tables 1 and 2 in embodiment 1.
Table 1 implements the Testing of Grouting Material Behind Segments each group distribution ratio (kg/m of 1 each embodiment3)
| Embodiment | Cement | Flyash | Abandon sand | Abandon slurry | Mud balance |
| 1-1 | 150 | 440 | 800 | 360 | 1.1 |
| 1-2 | 150 | 440 | 750 | 500 | 1.2 |
The Testing of Grouting Material Behind Segments properties of 2 embodiment of table, 1 each embodiment
2 result of upper table is shown：The present invention method prepare Testing of Grouting Material Behind Segments can realize high stability (delamination degree≤
2mm), bleeding rate≤2.5%) and setting time (12~17h) performance, have higher intensity (3 days intensity>0.9MPa, 7 days
Intensity>1.3MPa), performance can meet Testing of Grouting Material Behind Segments requirement completely.
Embodiment 2
Certain two-wire river-crossing tunnel, left line siding-to-siding block length are 1779.006m, and right line siding-to-siding block length is 1785.798m.It wears in section
More geological condition is mainly：Silty clay, muck soil, it is thick in sand (in close), mud burning into sand, gravelly clay, stratum.Original annotation
There is the phenomenon that layering plugging in mortar during slurry.Master Cost is matched after improvement and saves 43%, and mortar does not have in use
Have there is a phenomenon where being layered plugging, stratum monitors shield driving shield tail surface subsidence in digging near procedure and is respectively less than 24mm, settles
Control effect is good.The following table 3 is Testing of Grouting Material Behind Segments each component match ratio.
Testing of Grouting Material Behind Segments each component match ratio (kg/m in 3 embodiment 2 of table3)
| Embodiment | Cement | Flyash | Sand | Water/mud | Water/mud balance |
| First wife's ratio | 150 | 440 | 800 | 300 (water) | 1.0 |
| It is matched after improvement | 150 | 440 | 800 (abandoning sand) | 360 (abandoning slurry) | 1.1 |
Embodiment 3
Following embodiment matches Testing of Grouting Material Behind Segments according to the Testing of Grouting Material Behind Segments each group distribution ratio of embodiment 1-1.Its
In be only that cement used is different in each embodiment.
Cement used in 3-1 Testing of Grouting Material Behind Segments is lumnite cement of the present invention+existing preparation method
The lumnite cement includes the following component of percentage：Portland clinker 68% mixes
Close slag 33%, gypsum 22%, retarder 3%.
Preparation method：It is according to proportioning grinding to specific surface area by Portland clinker, mixing slag, gypsum, retarder
430±10m2/kg。
Cement used in 3-2 Testing of Grouting Material Behind Segments is lumnite cement of the present invention+existing preparation method
The lumnite cement includes the following component of percentage：Portland clinker 42% mixes
Close slag 16%, gypsum 15%, retarder 1%.
Preparation method：It is according to proportioning grinding to specific surface area by Portland clinker, mixing slag, gypsum, retarder
430±10m2/kg。
Cement used in 3-3 Testing of Grouting Material Behind Segments is lumnite cement of the present invention+preparation method of the present invention
The lumnite cement includes following components, and each component percentage is：Portland clinker
68%, mixing slag 33%, gypsum 22%, retarder 3%.
Preparation method is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ±
10m2/kg；
Step 2：Mixture after grinding is placed in mixing vessel, places air blower in the bottom of mixing vessel, upwards
Do not stop air blast, the gas of air blast is carbon dioxide, while at the top of mixing vessel and side by microwave to mixing vessel
Interior mixture is handled, processing time 30min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through water steaming incessantly in the mixing container
Gas stops after being passed through 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the fast hardening portland water
Mud.
Cement used in 3-4 Testing of Grouting Material Behind Segments is lumnite cement of the present invention+preparation method of the present invention
The lumnite cement includes following components, and each component percentage is：Portland clinker
42%, mixing slag 16%, gypsum 15%, retarder 1%.
Preparation method is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ±
10m2/kg；
Step 2：Mixture after grinding is placed in mixing vessel, places air blower in the bottom of mixing vessel, upwards
Do not stop air blast, the gas of air blast is carbon dioxide, while at the top of mixing vessel and side by microwave to mixing vessel
Interior mixture is handled, processing time 20min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through water steaming incessantly in the mixing container
Gas stops after being passed through 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the fast hardening portland water
Mud.
Cement used in 3-5 Testing of Grouting Material Behind Segments is lumnite cement of the present invention+existing retarder
The lumnite cement includes following components, and each component percentage is：Portland clinker
42%, mixing slag 16%, gypsum 15%, retarder 1%.
Preparation method is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ±
10m2/kg；
Step 2：Mixture after grinding is placed in mixing vessel, places air blower in the bottom of mixing vessel, upwards
Do not stop air blast, the gas of air blast is carbon dioxide, while at the top of mixing vessel and side by microwave to mixing vessel
Interior mixture is handled, processing time 20min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through water steaming incessantly in the mixing container
Gas stops after being passed through 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the fast hardening portland water
Mud.
The retarder is cellulose derivative.
Cement used in 3-6 Testing of Grouting Material Behind Segments is the retarder of lumnite cement+present invention of the present invention
The lumnite cement includes following components, and each component percentage is：Portland clinker
42%, mixing slag 16%, gypsum 15%, retarder 1%.
Preparation method is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ±
10m2/kg；
Step 2：Mixture after grinding is placed in mixing vessel, places air blower in the bottom of mixing vessel, upwards
Do not stop air blast, the gas of air blast is carbon dioxide, while at the top of mixing vessel and side by microwave to mixing vessel
Interior mixture is handled, processing time 20min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through water steaming incessantly in the mixing container
Gas stops after being passed through 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the fast hardening portland water
Mud.
The retarder includes following component by weight：40 parts of industrial waste gypsum, 40 parts of composite phosphate, first
30 parts of shell cellulose fiber, 30 parts of potato modified starch.
Cement used in 3-7 Testing of Grouting Material Behind Segments is the retarder of lumnite cement+present invention of the present invention
The lumnite cement includes following components, and each component percentage is：Portland clinker
42%, mixing slag 16%, gypsum 15%, retarder 1%.
Preparation method is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ±
10m2/kg；
Step 2：Mixture after grinding is placed in mixing vessel, places air blower in the bottom of mixing vessel, upwards
Do not stop air blast, the gas of air blast is carbon dioxide, while at the top of mixing vessel and side by microwave to mixing vessel
Interior mixture is handled, processing time 20min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through water steaming incessantly in the mixing container
Gas stops after being passed through 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the fast hardening portland water
Mud.
The retarder includes following component by weight：20 parts of industrial waste gypsum, 20 parts of composite phosphate, first
16 parts of shell cellulose fiber, 16 parts of potato modified starch.
Cement used in 3-8 Testing of Grouting Material Behind Segments is the retarder of lumnite cement+present invention of the present invention
The lumnite cement includes following components, and each component percentage is：Portland clinker
42%, mixing slag 16%, gypsum 15%, retarder 1%.
Preparation method is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ±
10m2/kg；
Step 2：Mixture after grinding is placed in mixing vessel, places air blower in the bottom of mixing vessel, upwards
Do not stop air blast, the gas of air blast is carbon dioxide, while at the top of mixing vessel and side by microwave to mixing vessel
Interior mixture is handled, processing time 20min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through water steaming incessantly in the mixing container
Gas stops after being passed through 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the fast hardening portland water
Mud.
The retarder includes following component by weight：20 parts of industrial waste gypsum, 20 parts of composite phosphate, first
16 parts of shell cellulose fiber, 16 parts of potato modified starch.
Preparation method is as follows：
Step 1：Industrial waste gypsum and composite phosphate are added in citric acid solution according to the ratio and dissolved, is filtered out miscellaneous
Matter obtains the first filtrate；
Step 2：Chitin fiber and potato modified starch are also added in citric acid solution dissolve according to the ratio, is filtered
Except impurity, the second filtrate is obtained；
Step 3：The first above-mentioned filtrate and the second filtrate are uniformly mixed, are added in 75% ethanol water, and
98 DEG C are warming up to, 10min is kept the temperature；
Step 4：The liquid that step 3 is obtained carries out press filtration processing, obtains moisture content and is 30% filter cake, and air-dries and be
Pulverulent solids, the as described retarder.
The Testing of Grouting Material Behind Segments properties of each embodiment in 4 embodiment 3 of table
As can be seen from Table 4,3-3 and 3-4 and 3-1 and 3-2 is compared it is found that being prepared using the preparation method of the present invention
Lumnite cement, be subsequently used in Testing of Grouting Material Behind Segments, can be improved stability, i.e., delamination degree reduces；Also it can be improved solidifying
Tie the time；In addition intensity slightly improves, and other each performances are also not affected by big influence.
Comparison 3-5 to 3-8 it is found that the retarder obtained using the retarder and the method for preparing retarder of the present invention,
It is subsequently used in Testing of Grouting Material Behind Segments, substantially increases the setting time of injecting paste material, and other each performances and be not affected by big
It influences.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and embodiment shown and described herein.
Claims (9)
1. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method, which is characterized in that include the following steps：
Step 1：The discarded slurry that slurry shield grout outlet generates is sent by sludge pipe to screening machine and is sieved, successively into
Row pre-sifted, level-one sieve and two level sieve, pre-sifted screen out cobble, gravel bulky grain in mud, and level-one sieve and two level screen out and be more than
The particle of 0.05mm；
Step 2：It is used to replace sand in first wife's ratio in Testing of Grouting Material Behind Segments by abandoning after sand mixing after level-one sieve and two level sieve,
Remaining fine grained discarded slurry replaces bentonite and water in first wife's ratio after screening, adds cement and coal ash for manufacturing into grouting behind shaft or drift lining
Material.
2. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as described in claim 1, feature exists
In Testing of Grouting Material Behind Segments includes following component：Cement, flyash abandon sand, abandon slurry, and the weight proportion of each component is：Cement 100-
300kg/m3, flyash 300-500kg/m3, abandon sand 700-1700kg/m3, abandon slurry 200-500kg/m3。
3. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as described in claim 1, feature exists
In level-one screening abandons sand by 1 with after two level screening：1~2：1 is used in mixed way.
4. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as claimed in claim 2, feature exists
In cement is p42.5 grades of common or lumnite cements, and flyash is a second class powered coal ash.
5. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as claimed in claim 2, feature exists
In further including step 3：Mechanical mixture is carried out according to ratio requirement, and is stirred 2~3 minutes, is stored immediately to slurry storage tank,
It is to be transported to be irrigated to shield scene.
6. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as claimed in claim 4, feature exists
In the lumnite cement includes the following component of percentage：Portland clinker 42~68%, mixing
Slag 16~33%, gypsum 15~22%, retarder 1~3%.
7. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as claimed in claim 6, feature exists
In the retarder includes following component by weight：20~40 parts of industrial waste gypsum, composite phosphate 20~40
Part, 16~30 parts of chitin fiber, 16~30 parts of potato modified starch.
8. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as claimed in claim 7, feature exists
In the preparation method of the retarder is as follows：
Step 1：Industrial waste gypsum and composite phosphate are added in citric acid solution according to the ratio and dissolved, impurity is filtered out, is obtained
To the first filtrate；
Step 2：Chitin fiber and potato modified starch are also added in citric acid solution dissolve according to the ratio, is filtered out miscellaneous
Matter obtains the second filtrate；
Step 3：The first above-mentioned filtrate and the second filtrate are uniformly mixed, are added in 75% ethanol water, and heat up
To 98 DEG C, 10min is kept the temperature；
Step 4：The liquid that step 3 is obtained carries out press filtration processing, obtains moisture content and is 30% filter cake, and air-dries as powder
Shape solid, the as described retarder.
9. abandoning slurry using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method as claimed in claim 6, feature exists
In the preparation method of the lumnite cement is as follows：
Step 1：By Portland clinker, mixing slag, gypsum, retarder according to proportioning grinding to specific surface be 430 ± 10m2/
kg；
Step 2：Mixture after grinding is placed in mixing vessel, air blower is placed in the bottom of mixing vessel, does not stop upwards
Air blast, the gas of air blast are carbon dioxide, at the same at the top of mixing vessel and side by microwave in mixing vessel
Mixture is handled, and processing time is 20~30min；
Step 3：In step 2, when microwave treatment time is 10min, it is passed through vapor incessantly in the mixing container, leads to
Stop after entering 10min；
Step 4：Mixture after the completion of above-mentioned microwave treatment, rapid cooling to room temperature is to get the lumnite cement.
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|---|---|---|---|
| CN201810108288.2A CN108409227A (en) | 2018-02-02 | 2018-02-02 | Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method |
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| CN115477526A (en) * | 2022-07-28 | 2022-12-16 | 四川三合利源环保建材有限公司 | Roadbed filling material prepared from waste shield slurry and preparation method thereof |
| CN115536324A (en) * | 2022-10-21 | 2022-12-30 | 河海大学 | High-content waste sand wall post-grouting material and grouting method |
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Application publication date: 20180817 |