CN108774999A - Method for treating radial through cracks of arch dam - Google Patents
Method for treating radial through cracks of arch dam Download PDFInfo
- Publication number
- CN108774999A CN108774999A CN201810568655.7A CN201810568655A CN108774999A CN 108774999 A CN108774999 A CN 108774999A CN 201810568655 A CN201810568655 A CN 201810568655A CN 108774999 A CN108774999 A CN 108774999A
- Authority
- CN
- China
- Prior art keywords
- grouting
- inclined hole
- crack
- arch dam
- dam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title abstract description 4
- 239000004593 Epoxy Substances 0.000 claims abstract description 18
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000011440 grout Substances 0.000 claims description 15
- 210000002445 nipple Anatomy 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 238000003672 processing method Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 235000013336 milk Nutrition 0.000 claims description 4
- 239000008267 milk Substances 0.000 claims description 4
- 210000004080 milk Anatomy 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims 1
- 239000011083 cement mortar Substances 0.000 abstract 1
- 229920006333 epoxy cement Polymers 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a method for treating radial through cracks of an arch dam, wherein U-shaped grooves (4) are carved on the surfaces of upper and lower dam surfaces along the radial through cracks, grouting nozzles (6) are embedded in the U-shaped grooves (4), epoxy mortar (5) is backfilled, and then epoxy cement mortar (7) is smeared on the surfaces of the cracks for sealing; and long grouting inclined holes (3) and short grouting inclined holes (2) are distributed on the upper dam face of the crack along the two sides of the crack trend, the grouting sequence is from low to high, and grouting nozzle (6) is used for joint-straddling hole grouting after the long grouting inclined holes (3) and the short grouting inclined holes (2) are grouted. According to the invention, long and short grouting inclined holes are combined with the chemical grouting treatment of the straddling seams to the radial penetrating cracks of the arch dam, so that dam bodies on two sides of the cracks are bonded again to form a whole.
Description
Technical field
The invention belongs to hydraulic and hydroelectric engineering applied technical field, it is specifically related to a kind of arch dam and extends radially through crack treatment
Method.
Background technology
In hydraulic and hydroelectric engineering, arched concrete dam is not up to required and is met due to construction, temperature control, joint grouting
To combined causes such as extreme weathers, dam body often will appear thermal cracking, and dam body is caused in wherein extending radially through property of arch dam crack
Structure safety hazard threatens dam safety operation.
Invention content
The technical problem to be solved by the present invention is to：The damage of crack is extended radially through for arch dam, especially fracture width is in 5mm
Within through crack, a kind of arch dam is provided and extends radially through crack processing method, dam body stress after treatment by using the treatment method
Meet Structural Design Requirement, it is ensured that dam safety stable operation.
Technical scheme is as follows：
A kind of arch dam extends radially through crack processing method, and crack, upstream and downstream are extended radially through using Chemical Grouting Treatment arch dam
Dam facing extends radially through fracture strike surface and carves U-type groove, buries grout nipple in U-type groove, and backfill epoxy resin mortar, then crack table
Smear epoxy mortar closing in face；
Crack upstream dam facing lays long grouting inclined hole and short grouting inclined hole along fracture strike both sides, and long grouting inclined hole and short
Grouting inclined hole extends radially through crack with arch dam respectively and intersects, and from low to high, long grouting inclined hole fills grouting sequence with short grouting inclined hole
Grout nipple roulette grouting is carried out after complete.
Preferably, the groove width 3cm of the U-lag, depth 5cm will be rinsed well in U-lag, uniformly be smeared after dry
One layer of epoxy base fluid, point two layers of progress epoxy resin mortar backfill after complete 30 minutes of epoxy base fluid brushing, every layer of backfill thickness is 3cm.
Preferably, junction of the edges of two sheets of paper grout nipple is pasted in the U-lag, grout nipple base diameter is0.5~1m of spacing.
Preferably, junction of the edges of two sheets of paper grout nipple is pasted in U-lag using epoxy base fluid.
Preferably, the long grouting inclined hole end apart from arch dam extend radially through crack with it is big at a distance from the long inclined hole intersection point that is in the milk
In equal to 100cm, the short grouting inclined hole end extends radially through crack at a distance from short grouting inclined hole intersection point apart from arch dam and is more than
Equal to 100cm.
Preferably, the long grouting inclined hole and short grouting inclined hole interlaced arrangement extend radially through each 1m in crack both sides in arch dam
Place, apertureLong grouting inclined hole extends radially through crack intersection point away from downstream dam facing 3m, short grouting inclined hole and arch dam with arch dam
Extend radially through half of the crack intersection point away from upstream dam facing distance for remaining dam body thickness, long grouting inclined hole and short grouting inclined hole spacing
For 1~3m.
Preferably, the grouting material is that epoxy grouting material or polyurethane starch material.
In the present invention, the long and short grouting inclined hole trepanning distance of upstream face does not have (i.e. at a distance from extending radially through property of arch dam crack)
It is particularly limited to, as long as ensureing that long and short grouting inclined hole can tiltedly wear dam internal fissure；Long and short grouting inclined hole is passed through and is split in dam body
There must be one section of extended distance (still having a sector hole since length inclined hole and extending radially through property of arch dam crack point of intersection) after seam,
Effect is to ensure through cracks seam inclined hole grouting effect.
For through crack of the fracture width within 5mm, the present invention is by growing extending radially through property of arch dam crack
Short grouting inclined hole combination junction of the edges of two sheets of paper Chemical Grouting Treatment makes crack both sides dam body bond again and forms whole, dam at crack after processing
Body structural strength is met the requirements, and ensures later stage arch dam safety stable operation.
Description of the drawings
Fig. 1 is upstream arrangement elevation view；
Fig. 2 is arranged downstream elevation view；
Fig. 3 is the A-A cross section views in Fig. 1 and Fig. 2；
Fig. 4 is full-page proof A views in Fig. 3；
In figure：1- arch dams extend radially through crack, the short grouting inclined holes of 2-, and 3- long is in the milk inclined hole, 4-U type grooves, 5- epoxy resin mortars,
6- grout nipples, 7- epoxy mortars, measurement unit is cm in figure.
Specific implementation mode
Invention is further described in detail with reference to the accompanying drawings and embodiments.
As depicted in figs. 1 and 2, the arch dam for width no more than 5cm extends radially through the processing of crack 1 using at chemical grouting
Reason buries grout nipple as shown in figure 4, wherein upstream and downstream dam facing extends radially through fracture strike surface quarter U-type groove 4 in U-type groove 4
6, epoxy resin mortar 5 is then backfilled, then smear epoxy mortar 7 in fracture faces and close；Crack upstream dam facing is along fracture strike both sides
Lay long grouting inclined hole 3 and short grouting inclined hole 2.
As shown in Figure 4, wherein the groove width 3cm of U-lag 4, depth 5cm will be rinsed well in U-lag 4, uniform after doing
Smear one layer of epoxy base fluid.Point two layers of progress epoxy resin mortar 5 backfills after complete 30 minutes of epoxy base fluid brushing, and every layer of backfill thickness is
The width of 3cm, top epoxy mortar 7 are 20cm.
As depicted in figs. 1 and 2, wherein junction of the edges of two sheets of paper grout nipple 6,6 bottom of grout nipple are pasted in U-lag 4 using epoxy base fluid
It is a diameter ofSpacing b is 0.5~1m.
As shown in Figure 3, wherein long grouting inclined hole 3, short 2 interlaced arrangement of grouting inclined hole extend radially through 1 both sides of crack in arch dam
At each 1m (100cm in corresponding diagram), aperture isLong grouting inclined hole 3 extends radially through 1 intersection point of crack away from downstream with arch dam
Dam facing 3m, short grouting inclined hole 2 extend radially through half of 1 intersection point of crack away from upstream dam facing distance for remaining dam body thickness with arch dam,
It is calculated according to formula [(T-3m)/2)], wherein T represents dam body thickness, and long grouting inclined hole 3 is 1 with short 2 spacing a of grouting inclined hole
~3m.Long grouting 3 end of inclined hole extends radially through crack 1 and be in the milk at a distance from 3 intersection point of inclined hole with length apart from arch dam is equal to 100cm, short
Grouting 2 end of inclined hole extends radially through crack 1 apart from arch dam and is equal to 100cm at a distance from short 2 intersection point of grouting inclined hole.
Arch dam extends radially through the processing of crack 1 and uses Chemical Grouting Treatment, grouting sequence from low to high, long grouting inclined hole 3 with
Short grouting inclined hole 2 carries out the grouting of 6 roulette of grout nipple after having filled.
Grouting material is that epoxy grouting material or polyurethane starch material.
Above-described embodiment is only the preferred embodiment of the present invention, is not intended to limit the scope of protection of the present invention, all
Deformation, modification or equivalent replacement for being made on the basis of technical scheme of the present invention etc. should all fall into the protection model of the present invention
It encloses.
Claims (7)
1. a kind of arch dam extends radially through crack processing method, it is characterised in that：It is extended radially through and is split using Chemical Grouting Treatment arch dam
It stitching (1), upstream and downstream dam facing extends radially through fracture strike surface and carves U-type groove (4), and grout nipple (6) is buried in U-type groove (4), and
Epoxy resin mortar (5) is backfilled, then fracture faces are smeared epoxy mortar (7) and closed；
Crack upstream dam facing lays long grouting inclined hole (3) and short grouting inclined hole (2), and long grouting inclined hole along fracture strike both sides
(3) crack (1) is extended radially through with arch dam respectively and is intersected with short grouting inclined hole (2), grouting sequence from low to high, grows grouting inclined hole
(3) grouting of grout nipple (6) roulette is carried out after having been filled with short grouting inclined hole (2).
2. a kind of arch dam according to claim 1 extends radially through crack processing method, it is characterised in that：The U-lag (4)
Groove width 3cm, depth 5cm, will rinse well in U-lag (4), one layer of epoxy base fluid, epoxy base fluid are uniformly smeared after dry
Point two layers of progress epoxy resin mortar (5) backfills after having brushed 30 minutes, and every layer of backfill thickness is 3cm.
3. a kind of arch dam according to claim 1 extends radially through crack processing method, it is characterised in that：The U-lag (4)
Junction of the edges of two sheets of paper grout nipple (6) is inside pasted, grout nipple (6) base diameter is0.5~1m of spacing.
4. a kind of arch dam according to claim 3 extends radially through crack processing method, it is characterised in that：Using epoxy base fluid
Junction of the edges of two sheets of paper grout nipple (6) is pasted in U-lag (4).
5. a kind of arch dam according to claim 1 extends radially through crack processing method, it is characterised in that：The long grouting is oblique
Hole (3) end extends radially through crack (1) and be in the milk at a distance from inclined hole (3) intersection point with length apart from arch dam is more than or equal to 100cm, described short
Grouting inclined hole (2) end extends radially through crack (1) apart from arch dam and is more than or equal to 100cm at a distance from short grouting inclined hole (2) intersection point.
6. a kind of arch dam according to claim 1 extends radially through crack processing method, it is characterised in that：The long grouting is oblique
Hole (3) and short grouting inclined hole (2) interlaced arrangement are extended radially through in arch dam at crack (1) each 1m in both sides, apertureIt is long to fill
Slurry inclined hole (3) extends radially through crack (1) intersection point away from downstream dam facing 3m with arch dam, and short grouting inclined hole (2) extends radially through with arch dam to be split
Stitch half of (1) intersection point away from upstream dam facing distance for remaining dam body thickness, long grouting inclined hole (3) and short grouting inclined hole (2) spacing
For 1~3m.
7. a kind of arch dam according to claim 1 extends radially through crack processing method, it is characterised in that：The grouting material
Material is starched for epoxy grouting material or polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568655.7A CN108774999A (en) | 2018-06-05 | 2018-06-05 | Method for treating radial through cracks of arch dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568655.7A CN108774999A (en) | 2018-06-05 | 2018-06-05 | Method for treating radial through cracks of arch dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108774999A true CN108774999A (en) | 2018-11-09 |
Family
ID=64024705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810568655.7A Pending CN108774999A (en) | 2018-06-05 | 2018-06-05 | Method for treating radial through cracks of arch dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108774999A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2371549B3 (en) * | 1976-11-19 | 1980-10-31 | Hayat Roger | |
| CN101200978A (en) * | 2007-12-19 | 2008-06-18 | 南通华新建工集团有限公司 | Reinforcing measures for balcony crevasse |
| CN103174112A (en) * | 2013-03-28 | 2013-06-26 | 葛洲坝集团试验检测有限公司 | Grouting method of penetrability concrete cracks |
| CN206829091U (en) * | 2016-12-27 | 2018-01-02 | 中国电建集团贵阳勘测设计研究院有限公司 | Radial crack processing structure that runs through of arch dam |
-
2018
- 2018-06-05 CN CN201810568655.7A patent/CN108774999A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2371549B3 (en) * | 1976-11-19 | 1980-10-31 | Hayat Roger | |
| CN101200978A (en) * | 2007-12-19 | 2008-06-18 | 南通华新建工集团有限公司 | Reinforcing measures for balcony crevasse |
| CN103174112A (en) * | 2013-03-28 | 2013-06-26 | 葛洲坝集团试验检测有限公司 | Grouting method of penetrability concrete cracks |
| CN206829091U (en) * | 2016-12-27 | 2018-01-02 | 中国电建集团贵阳勘测设计研究院有限公司 | Radial crack processing structure that runs through of arch dam |
Non-Patent Citations (1)
| Title |
|---|
| 李旭红: "钢筋混凝土现浇板贯穿裂缝的弥补及控制措施", 《韶关学院学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181109 |