CN107326868A - A kind of large reservoir concrete dam body fracture plugging method - Google Patents
A kind of large reservoir concrete dam body fracture plugging method Download PDFInfo
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- CN107326868A CN107326868A CN201710582283.9A CN201710582283A CN107326868A CN 107326868 A CN107326868 A CN 107326868A CN 201710582283 A CN201710582283 A CN 201710582283A CN 107326868 A CN107326868 A CN 107326868A
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- crack
- dam body
- holdfast
- concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
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- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention belongs to architectural engineering crack recovery technique field, and in particular to a kind of large reservoir concrete dam body fracture plugging method.Comprise the following steps：Remove the water sealing structure of reservoir concrete upstream face crack in dam body circumferential surface；Baltimore groove, and embedded bullet modeling dilatancy sealing rod are cut into along crack using cutting machine, while fracture carries out cementing operations；In the drilling of Baltimore groove both sides, steel holdfast of riding is anchored in hole with high-performance complex cement epoxy resin mortar；Ride holdfast surface and around assembling reinforcement net, spraying interfacial agents after, with high-performance complex cement epoxy mortar application；In addition in concrete dam body crack upper water plane, well cementing reinforcement and repair is carried out.The present invention is closed using well cementing and blocks the method being combined with surface, and crack is not only reached and obtains the effect of reparation and leak stopping, and strengthens the deformation intensity of large reservoir concrete, can the larger waterproof effect for improving dam body；There is fast blockage, good endurance simultaneously.
Description
Technical field
The invention belongs to architectural engineering crack recovery technique field, and in particular to a kind of large reservoir concrete dam body crack
Blocking method.
Background technology
Concrete dam body crack is due to the effect of concrete structure internal and external factor and the physical arrangement change that produces, and is split
Seam is the main cause of concrete structure bearing capacity, durability and water proofing property reduction.General concrete crack in dam body occurs
The position of percolating water, mainly appears on construction joint, attractive joint, malformation seam and concrete defect position, when concrete occurs
During crack, serious percolating water situation will be produced, in some Code in Hazardous Special Locations such as subway tunnel, reservoir, underground storehouses, to metope
Barrier performance require it is very high, once concrete wall surface crack occur seepage, often directly influence the peace of whole building engineering
Full stable operation, it is also possible to larger engineering accident can be caused.
At present, the reparation for large reservoir concrete dam body crack-leakage water mainly uses slip casting restorative procedure, table
Face closure method, flexible sealing method etc., but the problem of grouting for water plugging method maximum can be existed between injecting paste material and concrete
Gap, it is difficult to prevent seepage, and surface sealing method durability is bad, so existing large reservoir concrete dam body crack is repaiied
Compound method still has certain defect.
The content of the invention
In order to solve some existing at present technical elements defects, a kind of construction of present invention offer is simple, plugging effect
Well, good endurance, a kind of large reservoir concrete dam body fracture plugging method of anti-permeation cracking-resistant.
Technical scheme：
In order to solve the above-mentioned technical problem, a kind of large reservoir concrete dam body fracture plugging method of the present invention, it is wrapped
Include following steps：
（1）The water sealing structure of reservoir concrete upstream face crack in dam body circumferential surface is removed, fracture situation is examined after dismounting
Look into, find out seepage crack.
（2）Baltimore groove is cut into along crack using cutting machine, first opened during raggle along crack, then is widened to both sides, after having dug
The debris such as concrete chip, the dust in groove are cleaned out.
（3）In the Baltimore groove dug, embedded bullet modeling dilatancy sealing rod, while fracture carries out cementing operations.
（4）In the drilling of Baltimore groove both sides appropriate location, steel is ridden holdfast anchor with high-performance complex cement epoxy resin mortar
It is fixed in hole.
（5）Ride holdfast surface and around assembling reinforcement net, spraying interfacial agents after, with high-performance complex cement epoxy sand
Slurry is wiped one's face.
（6）After the completion of concrete dam body upstream face crack repairing, in concrete dam body crack upper water plane, drilled
Consolidation by grouting leak stopping.
The width that Baltimore groove is cut into described crack is 30-80mm, and depth is 50-120mm.
Described steel is ridden a diameter of 10-32mm of holdfast, and holdfast gos deep into wall length for 80-200mm, holdfast width
For 150-300mm.Each holdfast is separated by spacing for 50-200mm.
The sealing rod of described insertion Baltimore groove is that BW-96S bullets mould dilatancy sealing rod, by hydrophilic polyurethane material
It is made with compounding rubber.
Described concrete dam body crack upper water plane well cementing, Specific construction be along crack both sides each 80~
Carrying out vertical core and inclined hole cross-pair at 120mm respectively should drill, and pitch-row is in 250~300mm, and bit diameter is 24~60mm, tiltedly
Orifice angle and flaw level angle are 30-45 °, and drilling depth is through whole concrete structure；Then by hole and crack
Fine dusts purging is clean, and grout nipple is installed in the hole being drilled and is tightened, dead-end fracture surface, retains peephole and pressure release goes out
Stomata；High-performance complex cement epoxy resin mortar is irrigated into hole, is progressively irrigated from a lateral opposite side, when adjacent holes or crack table
Face peephole starts after pulp, pulp situation in 15~25s of pressure, observation crack, then appropriate progress supplementary irrigation is kept, until grouting
Pressure change than just stopping grouting after shallower.Grouting is finished, and is confirmed that high-performance complex cement epoxy resin mortar is fully cured, is gone
Fall exposed grout nipple；Last device to hole is sealed.
Beneficial effects of the present invention
The invention provides a kind of large reservoir concrete dam body fracture plugging method, blocked using well cementing closing and surface
The method being combined, makes crack obtain repairing the effect with leak stopping, while the deformation intensity of large reservoir concrete is also strengthened,
Waterproof effect can be greatly improved, there is fast blockage, good endurance.
Accompanying drawing one illustrates:
Fig. 1 is cross-sectional configuration schematic diagram of the invention
Fig. 2 is longitudinal plane structure schematic diagram of the invention
Wherein in figure：1st, crack, 2, groove, 3, holdfast, 4, steel wire, 5, composite cement epoxy resin mortar, 6, bullet modeling dilatancy
Sealing rod, 7, leak stopping slip casting vertical core, 8, leak stopping slip casting inclined hole.
Embodiment
In order that technical scheme and construction method step get across, below in conjunction with embodiment pair
The present invention is described in further detail below.
（1）The water sealing structure of reservoir concrete upstream face crack in dam body circumferential surface is removed using drill rod and pneumatic pick.
（2）Cutting machine is used to be cut into width along crack for 30-80mm, depth is 50-120mm Baltimore groove, it is first during raggle
Open, then widen to both sides along crack, the debris such as concrete chip, the dust in groove are all purged with compressed air after having dug
Clean out.
（3）In the Baltimore groove dug, embedded BW-96S bullets modeling dilatancy sealing rod is segmented from the bottom up, 300- is spaced
500mm reserves 50-80mm grout holes, and beats with wooden mallet sealing rod to solid, meanwhile, use high property using grout hole fracture
Energy complex cement epoxy resin mortar cementing operations, after the curing be complete, dilatancy sealing rod plugging grouting hole are moulded using BW-96S bullets.
（4）In Baltimore groove both sides 150-300mm positions, the electric drill for being 10-32mm with bit diameter drills, and hole depth length is
80-200mm, purges debris in hole with compressed air clean.Then will be with aperture using high-performance complex cement epoxy resin mortar
The consistent prefabricated steel of size holdfast of riding is anchored in hole, and each holdfast is separated by spacing for 50-200mm.
（5）Ride holdfast surface and around cover bar-mat reinforcement, spraying acrylic emulsion interfacial agents after, it is multiple with high-performance
Cement epoxy mortar application.
（6）After the completion of concrete dam body upstream face crack repairing, in concrete dam body crack upper water plane, along crack two
At each 80~120mm in side, carrying out vertical core and inclined hole cross-pair respectively using screw rod grouter should drill, pitch-row 250~
300mm, aperture is 24~60mm, and inclined hole angle and flaw level angle are 30-45 °, and drilling depth is through whole concrete
Structure；Then it is fine dusts in hole and crack are clean with compressed air purging, grout nipple is installed in the hole being drilled and twisted
Tightly, while moulding dilatancy sealing rod dead-end fracture surface using BW-96S bullets, peephole and pressure release venthole are retained；Filled into hole
High-performance complex cement epoxy resin mortar is noted, is progressively irrigated from a lateral opposite side, when adjacent holes or fracture faces peephole start
After pulp, pulp situation in 15~25s of pressure, observation crack, then appropriate progress supplementary irrigation are kept, until the pressure change ratio of grouting
Just stop grouting after shallower, it is ensured that concrete dam body vestibule and crack are fully filled with slurry.Grouting is finished, and confirms that high-performance is answered
Cement epoxy resin mortar is fully cured, and removes exposed grout nipple；Last device to hole is entered using BW-96S bullets modeling dilatancy sealing rod
Row sealing.
The invention provides a kind of thinking and method, the method and approach for implementing the technical scheme are a lot, it is described above only
It is the preferred embodiment of the present invention.It should be pointed out that to those of ordinary skill in the art, not departing from original of the invention
On the premise of reason, some improvements and modifications can also be made, these improvements and modifications also should be regarded as in protection scope of the present invention,
Each part being not known in the present embodiment can use prior art to be realized.
Claims (5)
1. a kind of large reservoir concrete dam body fracture plugging method, it is characterised in that it comprises the following steps：
（1）The water sealing structure of reservoir concrete upstream face crack in dam body circumferential surface is removed, fracture situation is examined after dismounting
Look into, find out seepage crack；
（2）Baltimore groove is cut into along crack using cutting machine, first opened during raggle along crack, then is widened to both sides, groove after having dug
The debris such as interior concrete chip, dust are cleaned out；
（3）In the Baltimore groove dug, embedded bullet modeling dilatancy sealing rod, while fracture carries out cementing operations；
（4）In the drilling of Baltimore groove both sides appropriate location, steel holdfast of riding is anchored in high-performance complex cement epoxy resin mortar
In hole；
（5）Ride holdfast surface and around assembling reinforcement net, spraying interfacial agents after, smeared with high-performance complex cement epoxy resin mortar
Face；
（6）After the completion of concrete dam body upstream face crack repairing, in concrete dam body crack upper water plane, well cementing is carried out
Reinforce leak stopping.
2. a kind of large reservoir concrete dam body fracture plugging method according to claim 1, it is characterised in that described
The width that Baltimore groove is cut into crack is 30~80mm, and depth is 50~120mm.
3. a kind of large reservoir concrete dam body fracture plugging method according to claim 1, it is characterised in that described
Steel is ridden a diameter of 10~32mm of holdfast, and holdfast gos deep into wall length for 80~200mm, and holdfast width is 150~
300mm, each holdfast is separated by spacing for 50~200mm.
4. a kind of large reservoir concrete dam body fracture plugging method according to claim 1, it is characterised in that described
The sealing rod of embedded Baltimore groove moulds dilatancy sealing rod for BW-96S bullets, by hydrophilic polyurethane material and compounding rubber system
.
5. a kind of large reservoir concrete dam body fracture plugging method according to claim 1, it is characterised in that described
Concrete dam body crack upper water plane well cementing, Specific construction is to be erected respectively along each 80~120mm in crack both sides
Hole and inclined hole cross-pair should drill, and pitch-row is in 250~300mm, and bit diameter is 24~60mm, and inclined hole angle is pressed from both sides with flaw level
Angle is 30~45 °, and drilling depth is through whole concrete structure；Then fine dusts in hole and crack are purged totally,
Grout nipple is installed in the hole being drilled and tightened, dead-end fracture surface, retains peephole and pressure release venthole；Irrigated into hole high
Performance complex cement epoxy resin mortar, is progressively irrigated from a lateral opposite side, when adjacent holes or fracture faces peephole start pulp
Afterwards, pulp situation in 15~25s of pressure, observation crack, then appropriate progress supplementary irrigation are kept, until the pressure change of grouting is relatively put down
Just stop grouting after slow；Grouting is finished, and is confirmed that high-performance complex cement epoxy resin mortar is fully cured, is removed exposed grout nipple；
Last device to hole is sealed.
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| CN201710582283.9A CN107326868A (en) | 2017-07-17 | 2017-07-17 | A kind of large reservoir concrete dam body fracture plugging method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049651A (en) * | 2017-12-22 | 2018-05-18 | 武汉固立达建筑科技有限公司 | A kind of distress in concrete blocking method |
| CN108729414A (en) * | 2018-05-14 | 2018-11-02 | 中水电第十工程局（郑州）有限公司 | A kind of concrete gravity dam transverse joint seepage treatment method |
| CN108755334A (en) * | 2018-06-11 | 2018-11-06 | 中水电第十工程局（郑州）有限公司 | A kind of method that concrete road planar defect is quickly repaired |
| CN109339067A (en) * | 2018-11-20 | 2019-02-15 | 杭州江润科技有限公司 | Concrete dam mask increases structure and construction method |
| CN109765354A (en) * | 2018-12-14 | 2019-05-17 | 重庆市排水有限公司 | A kind of pond body crack repairing test pond |
| CN111424613A (en) * | 2020-03-16 | 2020-07-17 | 中电建十一局工程有限公司 | Method for treating through cracks of roller compacted concrete dam |
| CN111485922A (en) * | 2020-05-13 | 2020-08-04 | 陕西上坤蓝箭科技有限公司 | E L F railway tunnel water leakage, block falling and grout turnover disease treatment method |
| CN112727142A (en) * | 2021-01-05 | 2021-04-30 | 三峡大学 | Device and method for repairing underwater crack by using superfine magnetic cement mortar |
| CN113294008A (en) * | 2021-05-29 | 2021-08-24 | 重庆海发工程项目管理咨询有限公司 | Building crack repairing method |
| CN114607167A (en) * | 2022-03-15 | 2022-06-10 | 中国水利水电科学研究院 | Crack repairing method and device combining microbial cement and chemical grouting technology |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049651A (en) * | 2017-12-22 | 2018-05-18 | 武汉固立达建筑科技有限公司 | A kind of distress in concrete blocking method |
| CN108729414A (en) * | 2018-05-14 | 2018-11-02 | 中水电第十工程局（郑州）有限公司 | A kind of concrete gravity dam transverse joint seepage treatment method |
| CN108755334A (en) * | 2018-06-11 | 2018-11-06 | 中水电第十工程局（郑州）有限公司 | A kind of method that concrete road planar defect is quickly repaired |
| CN109339067A (en) * | 2018-11-20 | 2019-02-15 | 杭州江润科技有限公司 | Concrete dam mask increases structure and construction method |
| CN109339067B (en) * | 2018-11-20 | 2021-01-15 | 杭州江润科技有限公司 | Concrete dam facing heightening structure and construction method |
| CN109765354A (en) * | 2018-12-14 | 2019-05-17 | 重庆市排水有限公司 | A kind of pond body crack repairing test pond |
| CN109765354B (en) * | 2018-12-14 | 2023-12-22 | 重庆市排水有限公司 | Cell body crack repair test pool |
| CN111424613B (en) * | 2020-03-16 | 2022-08-23 | 中电建十一局工程有限公司 | Method for treating through cracks of roller compacted concrete dam |
| CN111424613A (en) * | 2020-03-16 | 2020-07-17 | 中电建十一局工程有限公司 | Method for treating through cracks of roller compacted concrete dam |
| CN111485922A (en) * | 2020-05-13 | 2020-08-04 | 陕西上坤蓝箭科技有限公司 | E L F railway tunnel water leakage, block falling and grout turnover disease treatment method |
| CN112727142A (en) * | 2021-01-05 | 2021-04-30 | 三峡大学 | Device and method for repairing underwater crack by using superfine magnetic cement mortar |
| CN113294008A (en) * | 2021-05-29 | 2021-08-24 | 重庆海发工程项目管理咨询有限公司 | Building crack repairing method |
| CN114607167A (en) * | 2022-03-15 | 2022-06-10 | 中国水利水电科学研究院 | Crack repairing method and device combining microbial cement and chemical grouting technology |
| CN114607167B (en) * | 2022-03-15 | 2023-09-08 | 中国水利水电科学研究院 | Crack repairing method and device by combining microorganism cement and chemical grouting technology |
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Application publication date: 20171107 |