CN108049902A - A kind of grouted anchor bar and application method in auto-mending crack - Google Patents
A kind of grouted anchor bar and application method in auto-mending crack Download PDFInfo
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- CN108049902A CN108049902A CN201810076569.4A CN201810076569A CN108049902A CN 108049902 A CN108049902 A CN 108049902A CN 201810076569 A CN201810076569 A CN 201810076569A CN 108049902 A CN108049902 A CN 108049902A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 61
- 239000007924 injection Substances 0.000 claims abstract description 61
- 239000002002 slurry Substances 0.000 claims abstract description 44
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 239000011435 rock Substances 0.000 claims abstract description 24
- 241000193830 Bacillus <bacterium> Species 0.000 claims abstract description 19
- MKJXYGKVIBWPFZ-UHFFFAOYSA-L calcium lactate Chemical compound [Ca+2].CC(O)C([O-])=O.CC(O)C([O-])=O MKJXYGKVIBWPFZ-UHFFFAOYSA-L 0.000 claims abstract description 15
- 235000011086 calcium lactate Nutrition 0.000 claims abstract description 15
- 239000001527 calcium lactate Substances 0.000 claims abstract description 15
- 229960002401 calcium lactate Drugs 0.000 claims abstract description 15
- 239000004281 calcium formate Substances 0.000 claims abstract description 10
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims abstract description 9
- 235000019255 calcium formate Nutrition 0.000 claims abstract description 9
- 229940044172 calcium formate Drugs 0.000 claims abstract description 9
- 230000008439 repair process Effects 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 34
- 235000015097 nutrients Nutrition 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 241001037822 Bacillus bacterium Species 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 9
- 241000894006 Bacteria Species 0.000 claims description 8
- PXEDJBXQKAGXNJ-QTNFYWBSSA-L disodium L-glutamate Chemical class [Na+].[Na+].[O-]C(=O)[C@@H](N)CCC([O-])=O PXEDJBXQKAGXNJ-QTNFYWBSSA-L 0.000 claims description 8
- 235000013923 monosodium glutamate Nutrition 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 8
- 235000015424 sodium Nutrition 0.000 claims description 7
- 244000248539 Asparagus cochinchinensis Species 0.000 claims description 6
- 235000009292 Asparagus cochinchinensis Nutrition 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000004913 activation Effects 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 210000000481 breast Anatomy 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001580 bacterial effect Effects 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 239000011796 hollow space material Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 241000726221 Gemma Species 0.000 claims 2
- 235000009754 Vitis X bourquina Nutrition 0.000 claims 1
- 235000012333 Vitis X labruscana Nutrition 0.000 claims 1
- 240000006365 Vitis vinifera Species 0.000 claims 1
- 235000014787 Vitis vinifera Nutrition 0.000 claims 1
- SMHNUIFHMAGAFL-UHFFFAOYSA-N calcium;2-hydroxypropanoic acid Chemical compound [Ca].CC(O)C(O)=O SMHNUIFHMAGAFL-UHFFFAOYSA-N 0.000 claims 1
- IDAGXRIGDWCIET-SDFKWCIISA-L disodium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O IDAGXRIGDWCIET-SDFKWCIISA-L 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 7
- 230000007774 longterm Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 4
- 238000007596 consolidation process Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 6
- 229940073490 sodium glutamate Drugs 0.000 description 6
- 235000012207 sodium gluconate Nutrition 0.000 description 4
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 3
- 229960005069 calcium Drugs 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000000174 gluconic acid Substances 0.000 description 3
- 235000012208 gluconic acid Nutrition 0.000 description 3
- 229940083542 sodium Drugs 0.000 description 3
- 239000000176 sodium gluconate Substances 0.000 description 3
- 229940005574 sodium gluconate Drugs 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- DCXYFEDJOCDNAF-UHFFFAOYSA-N Asparagine Natural products OC(=O)C(N)CC(N)=O DCXYFEDJOCDNAF-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- DCXYFEDJOCDNAF-REOHCLBHSA-N L-asparagine Chemical compound OC(=O)[C@@H](N)CC(N)=O DCXYFEDJOCDNAF-REOHCLBHSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229960001230 asparagine Drugs 0.000 description 1
- 235000009582 asparagine Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The purpose of the present invention is to solve injecting cement paste in the prior art later stage repair and reinforcement technique there are the defects of, provide a kind of grouted anchor bar and application method in auto-mending crack, belong to underground engineering and rock slope building material technical field.The grouted anchor bar of the present invention is formed by tubular type grouted rock bolt and for injecting the injection slurry containing Coriolis bacillus inside the anchor pole with anchor pole periphery, the anchor pole is mainly to utilize the Coriolis bacillus and the substrate of organic carbon source calcium lactate or calcium formate contained in cement matrix, constantly generate mineralising calcium carbonate, crack between fill concrete, the intensity for even improving concrete grouting body is repaired, so as to extend the service life of anchor pole and long-term consolidation effect.
Description
Technical field
The invention belongs to underground engineering and rock slope building material technical field, more particularly to a kind of auto-mending crack
Grouted anchor bar and application method.
Background technology
Anchor pole is one of main support form of current underground engineering and rock slope with concrete grouting reinforcing, to rock mass
The maintenance of stability plays an important role, especially in Jointed Rock Masses.People have developed various forms in recent years
Anchor pole, continuous reinforcing is obtained for from material to anchor type so that bolt anchorage technology has obtained wider application.
But present anchor pole improves the improvement in advance for being all based on anchor pole itself material-structure and concrete composition mostly, it is few
People can reinforce for the later maintenance after bolt grouting and later stage and be improved.Anchor pole is in actual use, anchor pole and note
Crack can be constantly generated between slurry and between injecting cement paste and stratum junction under the action of surrouding rock stress is subject to, and then is gone out
Existing anchor pole loosens the situation even to come off；In addition, concrete material is due to during long-term use and around ring
Under the influence of border, the local damages such as minute crack can be inevitably generated, these problems largely all greatly shorten
The service life of anchor pole and long-term consolidation effect.
Therefore, repairing and reinforce for the later stage of injecting cement paste is necessary.
The content of the invention
It is lacked existing for later stage reparation and reinforcement technique the purpose of the present invention is to solve injecting cement paste in the prior art
It falls into, provides a kind of grouted anchor bar and application method in auto-mending crack.The anchor pole mainly utilizes to be contained in cement matrix
Coriolis bacillus and the substrate of organic carbon source calcium lactate or calcium formate, constantly generate mineralising calcium carbonate, fill concrete
Between crack, repair the intensity for even improving concrete grouting body, imitated so as to extend the service life of anchor pole and long-term reinforce
Fruit.
One of technical scheme is a kind of grouted anchor bar in auto-mending crack, by tubular type grouted rock bolt and use
It is formed in injecting inside the anchor pole the injection slurry containing Coriolis bacillus between anchor pole and drilling；
Wherein, the tubular type grouted rock bolt is the hollow tubular type body of rod of both ends open, and described body of rod one end is to be bored for being inserted into
Insertion end in hole, the body of rod other end are for injecting the injection end of the injection slurry, and the hollow space of the body of rod is used
In pouring into the injection slurry, several equally distributed voussoirs, the body of rod note are fixed with close to the body of rod outer wall of the insertion end
Enter end and be additionally provided with the square backing plate being socketed on the body of rod and the nut for sealing the body of rod injection end；
The injection slurry by Coriolis bacillus bacterium solution, calcium lactate/calcium formate, nutrient solution and coagulation local soil type into.
Further, above-mentioned grouted anchor bar, the voussoir are non-right-isosceles triangle, and longer right-angle side is fixed on
The body of rod outer wall, shorter right-angle side and the insertion end are in one plane.
Further, above-mentioned grouted anchor bar, Coriolis bacillus bacterium solution, calcium lactate/calcium formate, battalion in the injection slurry
Nutrient solution and the weight ratio of concrete are：60：3~6：1~3：180~260.
Further, above-mentioned grouted anchor bar, the pH of the concrete is 11 ~ 12.
Further, above-mentioned grouted anchor bar, the Coriolis bacillus bacterial concentration are 1.0 ~ 3.0 × 1010A/mL.
Further, above-mentioned grouted anchor bar, the nutrient solution are to contain concentration 0.10 ~ 0.12g/ml asparatates
Sodium, 0.10 ~ 0.12g/ml of concentration sodium glutamates, the aqueous solution of concentration 0.10 ~ 0.12g/ml sodium gluconates.
Further, the preparation method of the injection slurry, includes the following steps：
1）Coriolis bacillus is bred in shaking table, and passes through centrifugation and obtains Coriolis bacillus bacterium solution；
2）Ready-mixed concrete, and allocate the pH scopes of concrete；
3）Bacterium solution, calcium lactate/calcium formate and nutrient solution with concrete are uniformly mixed in proportion, form injection slurry.
The two of technical scheme are the application method of the grouted anchor bar in above-mentioned auto-mending crack, are specially：
1）In the drilling that the insertion of the hollow tubular type body of rod is accomplished fluently in advance, there is certain gap between the bosom of drilling and injection end, and
And there is certain gap between drill hole inner wall and body of rod outer wall；
2）By injection end slip casting into the hollow tubular type body of rod of anchor pole, injection slurry is full of inside the tubular type body of rod, and is being injected
It is sprayed at end and is covered with drill hole inner wall, when injection slurry, which flows to, drills outer, stopped slip casting, then square backing plate is sleeved on the tubular type body of rod
On, the compacting at hell, then nut is blocked in injection end, it is firm with country rock formation one after solidifying to wait injection slurry
Injection slurry entity is formed, the supporting power of an entirety is generated to country rock；
3）When between voussoir and injection slurry entity, between injection slurry entity and the tubular type body of rod generate crack when, penetrated by crack
Air and moisture make equally distributed aerobic Coriolis bacillus activation in injection slurry entity, Coriolis bacillus is in crack
CaCO is generated using calcium lactate/calcium formate3Crystal fills and repairs crack.
The principle in auto-mending crack of the present invention is：
Anchor pole is in later stage Bracing Process, due to being acted on be subject to surrouding rock stress, between triangle voussoir and injecting cement paste entity with
And crack can be constantly generated between injecting cement paste and the tubular type body of rod, weaken the support capacity of anchor pole, at this time uniformly divide in injecting cement paste
The aerobic Coriolis bacillus of cloth is in crack under air activation, and metabolism becomes vigorous, in this course gradually
Generate substantial amounts of CO2, under alkaline environment, the CO of generation2With the OH in humid air–Reaction generation HCO3 –, due to bacterium
Cell surface is negatively charged, can adsorb Ca2+And as nucleation site, HCO in alkaline conditions3 –With Ca2+It is raw that the reaction was continued
Into CaCO3Crystal fills crack, is finally reached the purpose in selfreparing weakness crackle crack, in this course need not be artificial
Offer Ca2+Ion, it is only necessary to which the presence of organic calcium source substrate, Coriolis bacillus can automatically be converted into organic calcium
Inorganic calcium（CaCO3）.
Compared with prior art, advantage of the invention is that：
1st, this anchor pole is designed using hollow lever, compared with traditional solid body of rod, can not only be obtained better rigidity and be resisted
Cut intensity, and can be more convenient cement injection slurries；The anchoring section of this anchor pole uses the uniform surrounding of Yangtze River Delta shape voussoir
Distribution, contributes to anchor pole to obtain the anchor force of bigger after slip casting, adds the anchoring effect of anchor pole.
What the 2nd, this anchor pole proposed is a kind of completely new concept, can automatically be repaiied during the use in bolt grouting body later stage
Multiple crack avoids the further interconnection expanded between crack in crack so that concrete rock mass preferably maintains
One complete rock mass reduces the situation for moving and coming off of anchor pole, adds anchoring time of the anchor pole to rock mass, extends
The service life of anchor pole and long-term consolidation effect.
Description of the drawings
Grouted anchor bar structure diagram in Fig. 1, embodiment 1；
Fig. 2, the voussoir in embodiment 1 and tubular type body of rod connection diagram；
1st, the tubular type body of rod, 2, insertion end, 3, injection end, 4, injection slurry, 5, voussoir, 6, square backing plate, 7, nut, 8, country rock.
Specific embodiment
A kind of grouted anchor bar in auto-mending crack, further illustrates specific embodiment below in conjunction with the accompanying drawings, although will
The description present invention in conjunction with the embodiments, it is to be understood that the description is not really wanted to limit the invention in the demonstration example, on the contrary, this hair
It is bright not only to cover the demonstration example, but also various replacements, change, equivalent and other embodiment are covered, it can include
In the spirit and scope of the present invention as defined in the appended claims.
Embodiment 1
A kind of grouted anchor bar in auto-mending crack, by tubular type grouted rock bolt and for injecting the anchor pole inside and anchor pole with boring
The composition of the injection slurry containing Coriolis bacillus between hole；
Wherein, the tubular type grouted rock bolt is the hollow tubular type body of rod 1 of both ends open, and described body of rod one end is to be enclosed for being inserted into
Rock 8 drill in insertion end 2, the body of rod other end be for injecting the injection end 3 of the injection slurry, the body of rod it is hollow
For pouring into the injection slurry 4, the body of rod outer wall is fixed with several equally distributed voussoirs 5 close to insertion end, described for part
Voussoir 5 is non-right-isosceles triangle, and longer right-angle side is fixed on the outer wall of the body of rod, and shorter right-angle side is inserted with described
Enter end in one plane, the body of rod injection end is additionally provided with the square backing plate 6 that is socketed on the body of rod and for sealing
State the nut 7 of body of rod injection end；
The preparation method of injection slurry is：In shaking table breed Coriolis bacillus, and pass through centrifugation obtain concentration 1.0 ~ 1.5 ×
1010The Coriolis bacillus bacterium solution of a/mL；Ready-mixed concrete, and the pH scopes for allocating concrete are 11 ~ 12；Take asparagine
Sour sodium, sodium glutamate, sodium gluconate, are made and are respectively containing Asparagus cochinchinensis ammonia acid sodium, sodium glutamate, gluconic acid na concn
The aqueous solution of 0.10g/ml is as nutrient solution；By the weight ratio of Coriolis bacillus bacterium solution, calcium lactate, nutrient solution and concrete
60：3：1：Bacterium solution, calcium lactate and nutrient solution and concrete are sufficiently mixed uniformly by 180 ratio, form injection slurry.
The application method of the grouted anchor bar in above-mentioned auto-mending crack, specially：
1）In the drilling that the hollow tubular type body of rod insertion for being fixed with voussoir is accomplished fluently in advance, between the bosom of drilling and injection end
There is certain gap, and have certain gap between drill hole inner wall and body of rod outer wall；
2）By injection end slip casting into the hollow tubular type body of rod of anchor pole, injection slurry is full of inside the tubular type body of rod, and is being injected
It is sprayed at end and is covered with drill hole inner wall, when injection slurry, which flows to, drills outer, stopped slip casting, then square backing plate is sleeved on the tubular type body of rod
On, it is compacted at hell, then by nut closure in injection end, the cooling of wait injection slurry forms a firm formation with country rock
Slip casting entity generates country rock the supporting power of one entirety；
3）When between voussoir and injecting cement paste, between injecting cement paste and the tubular type body of rod generate crack when, the air and moisture of infiltration make note
Equally distributed aerobic Coriolis bacillus activation, Coriolis bacillus generate CaCO in crack in slurry3Crystal, filling is simultaneously
Crack is repaired, as shown in the amplifier section of Fig. 1, so as to extend the service life of anchor pole and improve long-term consolidation effect.
Embodiment 2
A kind of grouted anchor bar in auto-mending crack, the grouted anchor bar structure and application method are distinguished with embodiment 1
In：The preparation method of injection slurry is：Coriolis bacillus is bred in shaking table, and passes through centrifugation and obtains concentration 2.5 ~ 3.0 × 1010
A/mL Coriolis bacillus bacterium solutions；Ready-mixed concrete, and the pH scopes for allocating concrete are 11 ~ 12；Take Asparagus cochinchinensis ammonia acid sodium,
Sodium glutamate, sodium gluconate, it is respectively 0.12g/ to be made containing Asparagus cochinchinensis ammonia acid sodium, sodium glutamate, gluconic acid na concn
The aqueous solution of ml is as nutrient solution；By the weight ratio 60 of Coriolis bacillus bacterium solution, calcium lactate, nutrient solution and concrete：6：3：
Bacterium solution, calcium lactate and nutrient solution and concrete are sufficiently mixed uniformly by 260 ratio, form injection slurry.
Embodiment 3
A kind of grouted anchor bar in auto-mending crack, the grouted anchor bar structure and application method are distinguished with embodiment 1.
In：The preparation method of injection slurry is：Coriolis bacillus is bred in shaking table, and passes through centrifugation and obtains concentration 1.8 ~ 2.3 × 1010
A/mL Coriolis bacillus bacterium solutions；Ready-mixed concrete, and the pH scopes for allocating concrete are 11 ~ 12；Take Asparagus cochinchinensis ammonia acid sodium,
Sodium glutamate, sodium gluconate, it is respectively 0.11g/ to be made containing Asparagus cochinchinensis ammonia acid sodium, sodium glutamate, gluconic acid na concn
The aqueous solution of ml is as nutrient solution；By the weight ratio 60 of Coriolis bacillus bacterium solution, calcium lactate, nutrient solution and concrete：5：2：
Bacterium solution, calcium lactate and nutrient solution and concrete are sufficiently mixed uniformly by 210 ratio, form injection slurry.
Claims (8)
1. a kind of grouted anchor bar in auto-mending crack, which is characterized in that by tubular type grouted rock bolt and for injecting the anchor pole
Injection slurry composition internal and between anchor pole and drilling；
Wherein, the tubular type grouted rock bolt is the hollow tubular type body of rod of both ends open, and described body of rod one end is for being inserted into drilling
Insertion end, the body of rod other end is for injecting the injection end of the injection slurry, and the hollow space of the body of rod is for filling
Enter the injection slurry, the body of rod outer wall close to the insertion end is fixed with several equally distributed voussoirs, the body of rod injection end
It is additionally provided with the square backing plate being socketed on the body of rod and the nut for sealing the body of rod injection end；
The injection slurry by Coriolis bacillus bacterium solution, calcium lactate/calcium formate, nutrient solution and coagulation local soil type into.
2. the grouted anchor bar in a kind of auto-mending crack according to claim 1, which is characterized in that the voussoir is non-etc.
Waist right angled triangle, longer right-angle side are fixed on the body of rod outer wall, and shorter right-angle side is flat at one with the insertion end
On face.
A kind of 3. grouted anchor bar in auto-mending crack according to claim 1, which is characterized in that the Coriolis gemma bar
Bacterium bacterium solution, calcium lactate/calcium formate, the weight ratio of nutrient solution and concrete are：60：3~6：1~3：180~260.
A kind of 4. grouted anchor bar in auto-mending crack according to claim 1, which is characterized in that the pH of the concrete
For 11 ~ 12.
A kind of 5. grouted anchor bar in auto-mending crack according to claim 1, which is characterized in that the Coriolis gemma bar
Bacterium bacterial concentration is 1.0 ~ 3.0 × 1010A/mL.
6. a kind of grouted anchor bar in auto-mending crack according to claim 1, which is characterized in that the nutrient solution be containing
There are 0.10 ~ 0.12g/ml of concentration Asparagus cochinchinensis ammonia acid sodiums, 0.10 ~ 0.12g/ml of concentration sodium glutamates, 0.10 ~ 0.12g/ml of concentration Portugals
The aqueous solution of grape sodium saccharate.
A kind of 7. grouted anchor bar in auto-mending crack according to claim 1, which is characterized in that the system of the injection slurry
Preparation Method includes the following steps：
1）Coriolis bacillus is bred in shaking table, and passes through centrifugation and obtains Coriolis bacillus bacterium solution；
2）Ready-mixed concrete, and allocate the pH of concrete；
3）Bacterium solution, calcium lactate/calcium formate and nutrient solution with concrete are uniformly mixed in proportion, form injection slurry.
8. the application method of the grouted anchor bar in a kind of auto-mending crack described in claim 1, which is characterized in that including as follows
Step：
1）In the drilling that the insertion of the tubular type body of rod is accomplished fluently in advance, there is certain gap between the bosom of drilling and injection end, and bore
There is certain gap between hole inner wall and body of rod outer wall；
2）By injection end slip casting into the tubular type body of rod of anchor pole, injection slurry is full of inside the tubular type body of rod, and is sprayed at injection end
Go out and be covered with drill hole inner wall, when injection slurry, which flows to, drills outer, stop slip casting, then square backing plate is sleeved on the tubular type body of rod,
It is compacted at hell, then nut closure is formed into a firm formation after injection end, wait injection slurry solidification with country rock
Injection slurry entity；
3）When between voussoir and injection slurry entity, between injection slurry entity and the tubular type body of rod generate crack when, penetrated by crack
Air and moisture equally distributed aerobic Coriolis bacillus activation, Coriolis bacillus in injection slurry entity is made to utilize lactic acid
Calcium/calcium formate generates CaCO in crack3Crystal fills and repairs crack.
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| CN109137824A (en) * | 2018-07-31 | 2019-01-04 | 浙江普天园林建筑发展有限公司 | A kind of ecological slope protection structure and ecological bank protecting method |
| CN111155960A (en) * | 2020-01-08 | 2020-05-15 | 太原理工大学 | Coal seam gas extraction drilling and hole sealing method based on MICP technology |
| CN111910697A (en) * | 2020-07-14 | 2020-11-10 | 四川轻化工大学 | Device and method for quickly repairing geomembrane |
| CN111910626A (en) * | 2020-08-13 | 2020-11-10 | 卓辉（福建）建设工程有限公司 | Construction process of soil anchor rod |
| CN112064635A (en) * | 2020-09-08 | 2020-12-11 | 长沙理工大学 | Anchoring structure capable of automatically feeding back stratum information and performing multiple repairs and anchoring and repairing method |
| CN114110646A (en) * | 2021-11-18 | 2022-03-01 | 新兴铸管股份有限公司 | Honeycomb heat accumulator connecting structure for heat accumulating type heating furnace |
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Application publication date: 20180518 |