CN109778859A - A kind of full dam of high concrete dam is without storehouse surface consolidation grouting method and structure - Google Patents
A kind of full dam of high concrete dam is without storehouse surface consolidation grouting method and structure Download PDFInfo
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- CN109778859A CN109778859A CN201910184918.9A CN201910184918A CN109778859A CN 109778859 A CN109778859 A CN 109778859A CN 201910184918 A CN201910184918 A CN 201910184918A CN 109778859 A CN109778859 A CN 109778859A
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000007596 consolidation process Methods 0.000 title claims abstract description 54
- 239000011435 rock Substances 0.000 claims abstract description 60
- 239000011440 grout Substances 0.000 claims abstract description 34
- 238000010276 construction Methods 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 10
- 235000013336 milk Nutrition 0.000 claims description 9
- 239000008267 milk Substances 0.000 claims description 9
- 210000004080 milk Anatomy 0.000 claims description 9
- 238000007790 scraping Methods 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 7
- 238000011835 investigation Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 239000002002 slurry Substances 0.000 abstract description 11
- 238000005422 blasting Methods 0.000 abstract description 6
- 238000005429 filling process Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 39
- 230000015271 coagulation Effects 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 239000002362 mulch Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 206010057175 Mass conditions Diseases 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to a kind of full dams of high concrete dam without storehouse surface consolidation grouting method and structure.The present invention provides sealing condition by confining surface crack first using the consolidation grouting method of " from outward appearance to inner essence " for the grouting of shallow-layer rock mass, prevents from that problem of leakage influence grouting effect occurs in filling process, and utmostly guarantee grout mixing；Then by encryption shallow-layer grout hole, crack between adjacent holes is filled up completely by slurries；It is finally used using the lid recast of shallow-layer rock mass, relatively high grouting pressure is used to deep rock mass, the range of scatter of slurries is increased, ensure that dam foundation consolidation grouting quality.It needs to be further processed there is only local superficial layer rock blasting crack, a small amount of shallow skirt grout hole can be used and handled, superficial layer rock mass grouting quality is more guaranteed.In addition, being greater than 50 ° of monolith for the two sides foundation plane gradient, in combination with contact grouting pipeline as skirt pipeline, does not need to arrange special skirt pipeline, significantly reduce difficulty of construction.
Description
Technical field
The present invention relates to foundation of water engineering works process fields, solid without storehouse surface more particularly, to a kind of full dam of high concrete dam
Tie grouting method and structure.
Background technique
Concrete gravity dam and arch dam are divided into weir, middle dam and high dam by its height of dam.Wherein gravity dam height of dam 30m the following are
Weir, 30m~70m are middle dam, and the above are high dams by 70m；For arch dam height of dam 50m the following are weir, 50m~100m is middle dam, 100m
The above are high dams.
The water ballast(ing) that high concrete dam is born is quite big, and dam foundation stability is related to dam longtime running safety, concrete
High dam foundation should have enough resistance to pressures and a degree of homogenieity.But the natural rock dam foundation inevitably exists soft
The poor geological conditions of the geological conditions such as weak, broken, more cracks, joints development, at the method for general common consolidation grouting
Reason.Cement grout is sent to rock by the method for drilling or pipe laying generally using cement as material, using grouting pump by consolidation grouting
In body crack, to improve the globality and non-deformability of rock mass.The common method of high concrete dam dam foundation consolidation grouting at present
There are 4 kinds, respectively coagulation earth mulch is redrilled hole consolidation grouting (hereinafter referred to as " having lid to be in the milk again "), without coagulation earth mulch weight consolidation grouting
(hereinafter referred to as " uncovered is in the milk again ") has coagulation earth mulch weight skirt grouting (hereinafter referred to as " skirt grouting "), deep to utilize rock mass
4 kinds of methods such as Gai Chong+skirt grouting, are respectively present following problems:
(1) " there is lid weight grouting method " and account for pressure concreting storehouse surface, it is big with dam concrete placement interference." there is Gai Chong
Grouting method " refers to that after dam concrete pours certain altitude, drilling carries out consolidation grouting, advantage on concrete storehouse surface
It is that can be closed again to surface layer crack using coagulation earth mulch, filling consolidation slurry pressure can be properly increased, grouting effect is guaranteed；
But its disadvantage needs account for pressure dam concrete placement storehouse surface, do not only take up the straight line duration that dam concrete pours, and may
Because dam concrete cracks caused by storehouse surface long pause, in addition, being easy to interrupt the built-in fittings such as the cooling water pipe in dam body, shadow when drilling
Ring dam concrete water flowing cooling effect.
(2) " uncovered weight grouting method " is only applicable to the preferable monolith of geological conditions, and grouting effect is difficult to ensure." uncovered
Weight grouting method " is that well cementing operation is directly carried out on batholith face, and work, will not be to concrete prior to concreting
Pour generation interference.But nongravity capping concretion grouting also has the weakness of its own, is generally only applicable to the preferable dam of rock mass condition
Section.The problem of often occurring due to not having the effect of coagulation earth mulch weight, in filling process from foundation plane crack spillage, causes to be in the milk
Pressure is difficult to be promoted to design pressure, and grouting effect tends not to satisfactory.
(3) " skirt grouting method " construction is relative complex, and grouting effect is relatively poor." skirt grouting method " is to build base
Face drills and buries outside grout pipe pass to concrete storehouse, is filled after concreting to certain altitude using skirt pipeline
Slurry does not account for pressure concreting storehouse surface, and but there are the following problems: first is that skirt grouting construction is relative complex, increasing many fillings
Starch pipeline；Second is that skirt grouting belongs to the grouting of group hole, a certain section of pipeline blockage or destruction will cause the failure of grouting in group hole, and group hole
If large seepage is met in a certain hole in will affect the grouting effect in other holes in group hole；Third is that group hole fills to prevent that dam body is caused to lift
The pressure of slurry is unsuitable high, and corresponding low-pressure grouting effect may be poor.
(4) " deep utilizes rock mass lid weight+shallow-layer skirt grouting method " grouting effect may be poor, and construction is complicated." deep
Utilize rock mass lid weight+shallow-layer skirt grouting method " it is to be in the milk again to deep rock mass before concreting using rock mass lid,
And it is directed to the pre-buried skirt pipeline of shallow-layer rock mass, skirt grouting is carried out to shallow-layer rock mass after concreting.It has the following problems:
First is that deep is in the milk using rock mass lid again when, it would still be possible to there are problems that from shallow-layer rock cranny spillage, grouting quality may be compared with
Difference；Second is that shallow-layer skirt depth is generally 2m~3m, skirt grout hole pitch-row is generally closeer, and it is multiple that there are still skirt grouting constructions
Miscellaneous, the problems such as grouting effect is relatively poor.
Summary of the invention
In order to solve the above problem, the present invention provides a kind of full dams of high concrete dam without storehouse surface consolidation grouting method and knot
Structure.It present invention can be suitably applied to high concrete gravity dam and arch dam, and avoid completely and concreting interference, easy construction, matter
Amount is reliable.
The technical solution adopted by the present invention is that: a kind of full dam of high concrete dam is without storehouse surface consolidation grouting method and structure, packet
Include following steps:
A, foundation plane is cleared up: after the completion of high concrete dam foundation plane excavates, being cleared up foundation plane；
B, foundation plane crack close: for the foundation plane crack at two sides bank slope position, the foundation plane crack at riverbed position and
Local deep trouth position carries out Seal treatment；
C, press water before filling in advance: leakage is split after discovery has the crack of leakage situation in investigation unclosed crack before grouting
Gap carries out Seal treatment；
D, encryption consolidation grouting processing dam foundation shallow-layer rock mass encryption grouting: is carried out to dam foundation shallow-layer rock mass；
E, dam foundation deep rock mass pressurization grouting: the part postorder hole of shallow-layer encryption grout hole is deepened, is pressurizeed as deep
Grout hole carries out pressurization consolidation grouting processing to deep rock mass；
F, a small amount of skirt pipeline of setting before dam concrete pours: it is greater than 50 ° of monolith, benefit for the two sides foundation plane gradient
With inbuilt contact grouting pipeline, as skirt pipeline；Monolith for the foundation plane gradient less than 50 ° buries skirt pipeline；
G, skirt grouting is carried out after dam concrete pours: being poured into certain altitude to dam concrete, base concrete
After temperature reaches design code stationary value, skirt grouting or surface grouting construction are carried out.
Preferably, clearing up in the step a foundation plane, excavates part and loosen sillar, and use high pressure water pair
Foundation plane crack is rinsed.
Preferably, for the foundation plane crack at two sides bank slope position, scraping quick-hardening cement using batch in the step b
Method is closed；For the foundation plane crack at riverbed position, closed using batch method for scraping quick-hardening cement；For part
Deep trouth position is closed in conjunction with pool concrete is filled out.
Further, in the step b, closing depth is not less than 10cm, and without departing from foundation plane elevation, conserve wait coagulate to
50% design strength.
Preferably, checking unclosed crack using the method for preparatory pressure water in the step c.
Preferably, in the step d, shallow-layer consolidation grouting hole hole depth 3m, pitch-row 2.5m × 1.25m~3m × 1.5m,
Grouting pressure 0.6MPa~1.0MPa.
Preferably, in the step e, deep rock mass consolidation grouting hole pitch-row 2.5m × 2.5m~3m × 3m, grouting pressure
Power uses 1.0MPa~2.5MPa.
Preferably, in the step f, pitch-row 2.5m × 2.5m~3m × 3m of surface grouting or skirt grouting, hole depth
0.3m~0.5m, skirt pipeline lead to dam body downstream.
A kind of full dam of high concrete dam is without storehouse surface consolidation grouting structure, it is characterised in that: including batch scraping quick-hardening cement layer, shallow
Layer encryption grout hole, deep layer pressurization grout hole and skirt grouting pipeline, scrape quick-hardening cement layer for described batch and are arranged on foundation plane surface layer
At crack；The skirt grouting pipeline is embedded in dam concrete, and the grouting entrance of the skirt grouting pipeline is pierced by dam body
Outside concrete, the grouting outlet of the skirt grouting pipeline extend into 0.3m~0.5m under foundation plane, the skirt grouting pipeline
Pitch-row in foundation plane is 2.5m × 2.5m~3m × 3m；The shallow-layer encryption grout hole extend into 3m under foundation plane, pitch-row
For 2.5m × 1.25m~3m × 1.5m, grouting pressure is 0.6MPa~1.0MPa；The deep layer pressurization grout hole, which is extend into, builds base
10m under face, pitch-row are 2.5m × 2.5m~3m × 3m, and grouting pressure is 1.0MPa~2.5MPa.
Preferably, the deep layer pressurization grout hole is process on the basis of shallow-layer encrypts grout hole
The beneficial effect that the present invention obtains is:
(1) it using no storehouse surface consolidation grouting method, thoroughly avoids and concrete interference problem
This method using no storehouse surface consolidation grouting method, Dam Base Surface excavate after the completion of, carry out external crack closing,
The work such as shallow-layer rock mass encryption grouting, deep rock mass pressurization grouting, and arrange a small amount of skirt grouting pipeline, then carry out concrete
Pouring construction, after the age of concrete reaches requirement, then carries out skirt grouting construction, does not account for pressure dam concrete placement storehouse completely
Face, thoroughly avoid with concrete interference problem, be not take up the straight line duration that dam concrete pours, not only avoid because storehouse surface is long
Interval the problem of causing dam concrete to crack, also avoids the problem of drilling interrupts the built-in fittings such as cooling water pipe in dam body.
(2) using the consolidation grouting method of " from outward appearance to inner essence ", it ensure that dam foundation consolidation grouting quality
This method is first the grouting of shallow-layer rock mass by confining surface crack using the consolidation grouting method of " from outward appearance to inner essence "
Sealing condition is provided, prevents from that problem of leakage influence grouting effect occurs in filling process, and utmostly guarantee that slurries spread model
It encloses；Then by encryption shallow-layer grout hole, crack between adjacent holes is filled up completely by slurries；Finally utilize shallow-layer rock mass
Lid recast use, to deep rock mass use relatively high grouting pressure, increase the range of scatter of slurries, ensure that the dam foundation consolidate
Grouting quality.
By the processing of " from outward appearance to inner essence " consolidation grouting method, Dam Foundation Rock grouting quality substantially meets requirement, there is only
Local superficial layer rock blasting crack needs to be further processed, and a small amount of shallow skirt grout hole can be used and handled, shallow mantle rock
Body grouting quality is more guaranteed.In addition, being greater than 50 ° of monolith for the two sides foundation plane gradient, make in combination with contact grouting pipeline
For skirt pipeline, does not need to arrange special skirt pipeline, significantly reduce difficulty of construction.
Detailed description of the invention
Fig. 1 is the full dam of high concrete dam without storehouse surface consolidation grouting " gauge seal closes " schematic diagram；
Fig. 2 is the full dam of high concrete dam without storehouse surface consolidation grouting " shallow encryption " schematic diagram；
Fig. 3 is the full dam of high concrete dam without storehouse surface consolidation grouting " deep boosting " schematic diagram；
Fig. 4 is the full dam of high concrete dam without storehouse surface consolidation grouting " few skirt " schematic diagram；
Appended drawing reference: 1, foundation plane crack, 2, superficial layer rock blasting crack, 3, shallow rock crack, 4, deep rock
Crack, 5, shallow-layer encryption grout hole, 6, deep pressurization grout hole, 7, skirt grouting pipeline, 8, skirt grout hole, 9, concrete height
Dam.
Specific embodiment
The present invention will be further explained in the following with reference to the drawings and specific embodiments.
As shown in Figs 1-4, the full dam of a kind of high concrete dam of the invention is without storehouse surface consolidation grouting method and structure, including with
Lower step:
A, foundation plane is cleared up: after the completion of high concrete dam foundation plane excavates, being cleared up foundation plane, is excavated local loosening
Sillar, and foundation plane crack is rinsed using high pressure water；
B, foundation plane crack is closed: for the foundation plane crack at two sides bank slope position, using batch method for scraping quick-hardening cement
It is closed；It is general to be closed using batch method for scraping quick-hardening cement for the foundation plane crack at riverbed position, for part
Deep trouth position is closed in combination with pool concrete is filled out, and closing depth is not less than 10cm, and without departing from foundation plane elevation, maintenance
Wait coagulate to 50% design strength；
C, water is pressed before filling in advance: unclosed crack being checked using the method for pressure water in advance before grouting, discovery has leakage feelings
Behind the crack of condition, Seal treatment is carried out to leakage crack；
D, dam foundation shallow-layer rock mass encryption grouting: encryption consolidation grouting processing is carried out to dam foundation shallow-layer rock mass, according to different
Rock mass condition, shallow-layer encrypt the general 3m of grout hole hole depth, and 2.5m × 1.25m~3m × 1.5m can be used in pitch-row, and grouting pressure can
Using 0.6MPa~1.0MPa；
E, dam foundation deep rock mass pressurization grouting: the part postorder hole of shallow-layer encryption grout hole is deepened, is pressurizeed as deep
Grout hole；According to different base rock conditions, 2.5m × 2.5m~3m × 3m is can be used in deep pressurization grout hole pitch-row, is in the milk
1.0MPa~2.5MPa can be used in pressure；
F, a small amount of skirt pipeline of setting before dam concrete pours: it is greater than 50 ° of monolith, benefit for the two sides foundation plane gradient
It is combinable to be used as skirt pipeline with inbuilt contact grouting pipeline；Monolith for the foundation plane gradient less than 50 ° buries skirt
Pipeline.General 2.5m × the 2.5m of pitch-row~3m × 3m of surface grouting or skirt grouting, hole depth 0.3m~0.5m, skirt pipeline are equal
Lead to dam body downstream；
G, skirt grouting is carried out after dam concrete pours: being poured into certain altitude to dam concrete, base concrete
After temperature reaches design code stationary value, skirt grouting or surface grouting construction are carried out.
The full dam of a kind of high concrete dam of the invention without storehouse surface consolidation grouting method and structure, using " gauge seal closes, shallowly plus
The method of close, deep boosting, few skirt " is filled in the case where not accounting for pressure concrete storehouse surface by using the consolidation of " from outward appearance to inner essence "
Paste-making method expands the range of scatter of cement grout using relatively large consolidation grouting pressure, guarantees dam foundation consolidation grouting matter
Amount:
(1) gauge seal closes
" gauge seal closes " closes foundation plane crack, prevents filling process from the problems such as leakage pressure release occur.Dam Base Surface is opened
After the completion of digging, foundation plane crack is cleared up first, then uses targetedly enclosure method according to different parts: for two
The foundation plane crack at bank bank slope position is closed using batch method for scraping quick-hardening cement；The foundation plane at riverbed position is split
Gap, it is general to be closed using batch method for scraping quick-hardening cement, for local deep trouth position, sealed in combination with pool concrete is filled out
It closes.In addition, checking unclosed crack using the method for pressure water in advance before grouting, after discovery has the crack of leakage situation, externally
It leaks crack and carries out Seal treatment.
It by the processing of " gauge seal closes ", can prevent filling process from the problems such as leakage pressure release occur, and utmostly ensure that
The range of scatter of slurries.
(2) shallow encryption
" shallow encryption " encrypts shallow-layer rock mass (referring to the rock mass within foundation plane depth 3m, similarly hereinafter) consolidation grouting hole, so that
Crack can be filled up completely by slurries between adjacent holes, guarantee the grouting effect of shallow-layer rock mass.According to correlation engineering experience and theory
It calculates, after the completion of Dam Base Surface is excavated, it is dam foundation consolidation grouting that the rock blasting relief joint within depth 3m, which is relatively developed,
The emphasis of processing.According to different rock mass conditions, 2.5m × 1.25m~3m × 1.5m is can be used in shallow-layer consolidation grouting hole pitch-row,
0.6MPa~1.0MPa can be used in grouting pressure.
By the processing of " gauge seal closes " and " shallow encryption ", shallow-layer rock mass has obtained preferable grouting effect, since crack is filled
The lid recast for having completed shallow-layer rock mass is used, and deep rock mass can use higher grouting pressure when being in the milk.
(3) deep boosting
" deep boosting " i.e. using the lid recast use of shallow-layer rock mass, to deep rock mass (refer to foundation plane depth 3m rock mass below,
Relatively high grouting pressure similarly hereinafter) is used, the range of scatter of slurries is utmostly expanded.According to different base rock items
Part, deep rock mass consolidation grouting hole pitch-row can be used 2.5m × 2.5m~3m × 3m, grouting pressure can be used 1.0MPa~
2.5MPa。
By " gauge seal closes ", the processing of " shallow encryption " and " deep boosting ", Dam Foundation Rock grouting quality substantially meets requirement, only
It needs to be further processed there are local superficial layer rock blasting crack.
(4) few skirt
" skirt less " is directed to foundation plane part superficial layer blasting crack, first pre-buried a small amount of shallow skirt grouting pipeline, to mixed
It after solidifying soil is poured into certain altitude, is in the milk under the conditions of concrete ballast, not only avoids leaking outside in filling process, can also fit
When using biggish grouting pressure increasing grout mixing.Different skirt methods is used according to the foundation plane gradient: for building
The basal plane gradient is greater than 50 ° of monolith, and concrete shrinkage is come to nothing with foundation plane generation in order to prevent, need to generally carry out at surface grouting
Reason, therefore handle superficial layer in combination with contact grouting pipeline, is not required to arrange special skirt grouting pipeline: for building base
Monolith of the face gradient less than 50 °, specific placement skirt pipeline handle superficial layer.The pitch-row of surface grouting or skirt grouting
1.0MPa~1.5MPa can be used in general 2.5m × 2.5m~3m × 3m, hole depth 0.3m~0.5m, grouting pressure.
A kind of full dam of high concrete dam of this invention is without storehouse surface consolidation grouting method and structure, in Jinsha jiang River Wu Dongdeshui
It succeeds application in the construction of power plant dam (arched concrete dam) He Erdao dam (Compacted Concrete Gravity Dam Section) dam foundation consolidation grouting,
II grade of rock mass (rock-mass quality is relatively preferable) and III, IV grade of rock mass (rock-mass quality is relatively poor) grouting quality is set to be all satisfied and want
Ask, not only ensure that dam foundation consolidation grouting quality, and completely avoid with a series of interference problems such as concreting, substantially
Reduce difficulty of construction.
Basic principle and key structural feature of the invention has been shown and described above.The present invention is not by the limit of examples detailed above
System, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It both falls in the range of claimed invention.The claimed scope of the invention is by appended claims and its equivalent
It defines.
Claims (10)
1. a kind of full dam of high concrete dam is without storehouse surface consolidation grouting method, comprising the following steps:
A, foundation plane is cleared up: after the completion of high concrete dam foundation plane excavates, being cleared up foundation plane；
B, foundation plane crack is closed: for the foundation plane crack at two sides bank slope position, the foundation plane crack at riverbed position and part
Deep trouth position carries out Seal treatment；
C, press water before filling in advance: the unclosed crack of investigation before grouting, after there is the crack of leakage situation in discovery, to leakage crack into
Row Seal treatment；
D, encryption consolidation grouting processing dam foundation shallow-layer rock mass encryption grouting: is carried out to dam foundation shallow-layer rock mass；
E, dam foundation deep rock mass pressurization grouting: the part postorder hole of shallow-layer encryption grout hole is deepened, pressurizes and is in the milk as deep
Hole carries out pressurization consolidation grouting processing to deep rock mass；
F, a small amount of skirt pipeline of setting before dam concrete pours: being greater than 50 ° of monolith for the two sides foundation plane gradient, using burying
If contact grouting pipeline, as skirt pipeline；Monolith for the foundation plane gradient less than 50 ° buries skirt pipeline；
G, skirt grouting is carried out after dam concrete pours: being poured into certain altitude, base concrete temperature to dam concrete
After reaching design code stationary value, skirt grouting or surface grouting construction are carried out.
2. the full dam of high concrete dam according to claim 1 is without storehouse surface consolidation grouting method, it is characterised in that: the step
In a, foundation plane is cleared up, part is excavated and loosens sillar, and foundation plane crack is rinsed using high pressure water.
3. the full dam of high concrete dam according to claim 1 is without storehouse surface consolidation grouting method, it is characterised in that: the step
In b, for the foundation plane crack at two sides bank slope position, closed using batch method for scraping quick-hardening cement；For riverbed position
Foundation plane crack, closed using the method for batch scraping quick-hardening cement；For local deep trouth position, in conjunction with fill out pool concrete into
Row closing.
4. the full dam of high concrete dam according to claim 3 is without storehouse surface consolidation grouting method, it is characterised in that: the step
In b, closing depth is not less than 10cm, and without departing from foundation plane elevation, conserves wait coagulate to 50% design strength.
5. the full dam of high concrete dam according to claim 1 is without storehouse surface consolidation grouting method, it is characterised in that: the step
In c, unclosed crack is checked using the method for preparatory pressure water.
6. the full dam of high concrete dam according to claim 1 is without storehouse surface consolidation grouting method and structure, it is characterised in that: institute
It states in step d, shallow-layer encryption grout hole hole depth 3m, pitch-row 2.5m × 1.25m~3m × 1.5m, grouting pressure 0.6MPa~
1.0MPa。
7. the full dam of high concrete dam according to claim 1 is without storehouse surface consolidation grouting method, it is characterised in that: the step
In e, pressurize grout hole pitch-row 2.5m × 2.5m~3m × 3m in deep, and grouting pressure uses 1.0MPa~2.5MPa.
8. the full dam of high concrete dam according to claim 1 is without storehouse surface consolidation grouting method, it is characterised in that: the step
In f, pitch-row 2.5m × 2.5m~3m × 3m of surface grouting or skirt grouting, hole depth 0.3m~0.5m, skirt pipeline are led to
Dam body downstream.
9. a kind of full dam of high concrete dam is without storehouse surface consolidation grouting structure, it is characterised in that: scrape quick-hardening cement layer, shallow-layer including batch
Grout hole, deep layer pressurization grout hole and skirt grouting pipeline are encrypted, quick-hardening cement layer is scraped for described batch and is arranged in foundation plane surface check
At gap；The skirt grouting pipeline is embedded in dam concrete, and it is mixed that the grouting entrance of the skirt grouting pipeline is pierced by dam body
Solidifying soil is outer, and the grouting outlet of the skirt grouting pipeline extend into 0.3m~0.5m under foundation plane, and the skirt grouting pipeline exists
Pitch-row in foundation plane is 2.5m × 2.5m~3m × 3m；The shallow-layer encryption grout hole extend into 3m under foundation plane, and pitch-row is
2.5m × 1.25m~3m × 1.5m, grouting pressure are 0.6MPa~1.0MPa；The deep layer pressurization grout hole extend into foundation plane
Lower 10m, pitch-row are 2.5m × 2.5m~3m × 3m, and grouting pressure is 1.0MPa~2.5MPa.
10. the full dam of high concrete dam according to claim 9 is without storehouse surface consolidation grouting structure, it is characterised in that: the depth
Layer pressurization grout hole is process on the basis of shallow-layer encrypts grout hole.
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| KR101607062B1 (en) * | 2015-09-11 | 2016-04-11 | 박인준 | Grout for filling pore space in ground and Method for grouting using the same |
| CN106917409A (en) * | 2017-03-27 | 2017-07-04 | 中国水利水电第四工程局有限公司 | A kind of rock lid weight consolidation grouting construction method |
| CN210238512U (en) * | 2019-03-12 | 2020-04-03 | 长江勘测规划设计研究有限责任公司 | Concrete high dam full dam storehouse surface-free consolidation grouting structure |
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2019
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| RU2194116C2 (en) * | 2001-02-22 | 2002-12-10 | Общество с ограниченной ответственностью "Специальный проектно-изыскательский институт "Гидроспецпроект" | Method of hydraulic structure concreting |
| JP2010174555A (en) * | 2009-01-30 | 2010-08-12 | Sumitomo Denko Steel Wire Kk | Anchor structure using anticorrosive prestressed concrete strand and its construction method, anticorrosive prestressed concrete strand assembly, and composite anchor member |
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| CN106917409A (en) * | 2017-03-27 | 2017-07-04 | 中国水利水电第四工程局有限公司 | A kind of rock lid weight consolidation grouting construction method |
| CN210238512U (en) * | 2019-03-12 | 2020-04-03 | 长江勘测规划设计研究有限责任公司 | Concrete high dam full dam storehouse surface-free consolidation grouting structure |
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