CN104404919A - Dam foundation corridor and bank slope bedrock connecting structure - Google Patents
Dam foundation corridor and bank slope bedrock connecting structure Download PDFInfo
- Publication number
- CN104404919A CN104404919A CN201410728386.8A CN201410728386A CN104404919A CN 104404919 A CN104404919 A CN 104404919A CN 201410728386 A CN201410728386 A CN 201410728386A CN 104404919 A CN104404919 A CN 104404919A
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- China
- Prior art keywords
- dam foundation
- bank slope
- foundation gallery
- basement rock
- grouting
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a dam foundation corridor and bank slope bedrock connecting structure which aims at avoiding the waterproof effect of a structural joint from being lost under the action of external loads. The dam foundation corridor and bank slope bedrock connecting structure comprises bank slope bedrock, a riverbed covering layer and a dam foundation corridor; the dam foundation corridor is arranged on the riverbed covering layer; the dam foundation corridor comprises a concrete wall and an inner chamber which is defined by the concrete wall; a grouting flat hole is formed inside the bank slope bedrock; the end portion of the dam foundation corridor is embedded in the bank slope bedrock and connected with the grouting flat hole; a gap formed between the dam foundation corridor and the grouting flat hole is the structural joint; a first circumferential water-stop belt is arranged in the structural joint. The end portion of the dam foundation corridor is embedded in the bank slope bedrock and connected with the grouting flat hole and accordingly the structural joint is located inside the bank slope bedrock. The fixing effect of the bank slope bedrock on the dam foundation corridor is good, the effect on the structural joint is small when the external loads are applied to the dam foundation corridor, and the water-stop belt is not easy to damage so as to avoid the waterproof effect of the structural joint from being lost.
Description
Technical field
The invention belongs to Hydraulic and Hydro-Power Engineering field, be specifically related to a kind of dam foundation gallery and bank slope basement rock syndeton.
Background technology
Earth and rockfill dam has the advantages such as selection is easy, cost is lower, structure is simple, ground strong adaptability, anti-seismic performance are good, is a kind of dam type that Hydraulic and Hydro-Power Engineering field extensively adopts.Dam foundation gallery is one of important component part of earth and rockfill dam dam body, and dam foundation gallery has the multiple use such as traffic in foundation grouting, draining, maintenance and inspection, safety monitoring and dam.
Dam foundation gallery is owing to being subject to above to cover the effect of dam body pressure and high water head and the differential settlement on two sides basement rock and basis, riverbed, and stressing conditions is very complicated, and difficulty of construction is larger.The general overlapping of existing dam foundation gallery is arranged on bank slope basement rock and Riverbed, the inner chamber that described dam foundation gallery comprises concrete wall and surrounded by concrete wall, circumference along dam foundation gallery on described dam foundation gallery is provided with structural joint, is provided with border waterstop in described structural joint.Because dam foundation gallery is steel concrete rigid structures, for adapting to uneven settlement of foundation, the dam foundation gallery base that generally just boundary line is formed between bank slope basement rock and Riverbed covers boundary line place and arranges structural joint, but practice situation shows, opening with sliding deformation amount of this place's structural joint is very large, although devise multiple tracks waterstop to this structural joint, but still difficult commensurate structure stitches excessive distortion, and destroyed stop-water in various degree and Seepage all appear in structural joint.Because structural joint is wrapped up by core-wall material completely after structural joint infiltration, core-wall material can be taken out of along with infiltration, and when structural joint being carried out to the patchings such as grouting, grouting agent easily enters dam body core-wall, brings adverse effect to dam structure.
The patent No. be 201220388743.7 utility model patent disclose a kind of core wall dam bank slope overlapping dam foundation gallery structure, its structural joint is arranged on dam foundation gallery corresponding to basement foundation, and the distance that the base that between described structural joint distance basement foundation and Riverbed, boundary line is formed covers boundary line is 1 ~ 30m.Though the structural joint of this patent is not arranged on base cover line of demarcation place, but dam foundation gallery is still overlapped on bank slope basement rock, be similar to the simple beam structure be overlapped on bank slope basement rock, although this patent affects less by the differential settlement on two sides basement rock and basis, riverbed, but structural joint still can produce larger distortion under the effect of other external loads, Seepage is still comparatively serious; In addition, this structural joint still part contacts with dam body core-wall material, and when after still there is structural joint destroyed stop-water, core-wall material is pulled away and repairs structural joint grouting, slurries easily enter the problem of dam body core-wall.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of avoid structural joint under the effect of external applied load, lose waterproof effect dam foundation gallery and bank slope basement rock syndeton.
In order to solve the problems of the technologies described above, the invention provides a kind of dam foundation gallery and bank slope basement rock syndeton, comprising bank slope basement rock, Riverbed and dam foundation gallery; Described dam foundation gallery is arranged on Riverbed, the inner chamber that dam foundation gallery comprises concrete wall and surrounded by concrete wall; The inside of described bank slope basement rock is provided with grouting adit, and the end of described dam foundation gallery embeds and is arranged on bank slope basement rock and is connected with grouting adit; Gap between described dam foundation gallery and grouting adit is structural joint, is provided with the first border waterstop in described structural joint.
Further, the inner wall surface of described grouting adit is provided with layer of concrete; Be provided with joint grouting pipe in described layer of concrete, one end of described joint grouting pipe is communicated with structural joint, and the other end of joint grouting pipe is communicated with grouting adit.
Further, be also provided with the second border waterstop in described structural joint, described second border waterstop is positioned at the circle of the first border waterstop.
Further, described dam foundation gallery embeds the part of bank slope basement rock for entering rock section, described in enter rock section length beeline be 1 ~ 3m.
Further, the external surface entering rock section described in is provided with elastic layer.
Further, enter rock section described in and be provided with the parietal suture grout pipe running through concrete wall.
Further, described dam foundation gallery is provided with the cover plate matched with dam foundation gallery, and side and the bank slope basement rock of described cover plate are fitted.
Further, described dam foundation gallery is provided with flexible sealing layer along the intersection of cover plate and dam foundation gallery joint.
The invention has the beneficial effects as follows: dam foundation gallery is embedded by its end and is arranged on bank slope basement rock and is connected with grouting adit, makes structural joint be in the inside of bank slope basement rock; Bank slope basement rock is better to the fixed effect of dam foundation gallery, and dam foundation gallery is influenced less by structural joint during external applied load, and waterstop is not easily destroyed, and avoids structural joint and loses waterproof effect.Joint grouting pipe when the factor such as dam deformation, foundation settlement causes structural joint destroyed stop-water, can carry out grouting to waterproof process to structural joint.Second border waterstop makes the waterproof effect of structural joint strengthen further.The most weakness of length entering rock section is 1 ~ 3m, ensure that the fixed effect of bank slope basement rock to dam foundation gallery.Rock section suffered maximum stress in bank slope basement rock can be reduced by elastic layer, avoid strong constraint.Parietal suture grout pipe can carry out backfill grouting, dam foundation gallery is connected closely, firmly with bank slope basement rock.Cover plate can form obstruct between structural joint and dam body.Flexible sealing layer can make structural joint be separated with dam body with cover plate cooperation, even if structural joint sealing occurs to destroy seepage, core-wall material still can be avoided to be pulled away with infiltration, when carrying out grouting repair process to structural joint, grouting agent can not enter dam body core-wall, can not destroy dam structure.
Accompanying drawing explanation
Fig. 1 is enforcement structural representation of the present invention;
Fig. 2 is A-A cross section view in Fig. 1;
Be labeled as in figure: bank slope basement rock 1, grouting adit 11, layer of concrete 111, joint grouting pipe 112, Riverbed 2, dam foundation gallery 3, concrete wall 31, inner chamber 32, structural joint 33, first border waterstop 331, second border waterstop 332, enter rock section 34, elastic layer 341, parietal suture grout pipe 342, cover plate 35, flexible sealing layer 36 and base and cover line of demarcation 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, dam foundation gallery and bank slope basement rock syndeton, comprise bank slope basement rock 1, Riverbed 2 and dam foundation gallery 3; Described dam foundation gallery 3 is arranged on Riverbed 2, the inner chamber 32 that dam foundation gallery 3 comprises concrete wall 31 and surrounded by concrete wall 31; The inside of described bank slope basement rock 1 is provided with grouting adit 11, and the end of described dam foundation gallery 3 embeds and is arranged on bank slope basement rock 1 and is connected with grouting adit 11; When grouting adit 11 is set, guarantee that the hole of grouting adit 11 is corresponding with the end of dam foundation gallery 3 to connect; Gap between described dam foundation gallery 3 and grouting adit 11 is structural joint 33, is provided with the first border waterstop 331 in described structural joint 33; First border waterstop 331 arranges one week in structural joint 33, as shown in Figure 2, usual structural joint 33 also needs carry out joint filling and use caulk compound filleting, such as: in structural joint 33, adopt the joint filling of pitch fiber crops sheet, and with the special caulk compound filleting of RCCanNCD, the special caulk compound of RCCanNCD requires adhesion strength >=1.0MPa, tensile strength >=1.5MPa, elongation at break >=300%, more than-15 DEG C keep flexible.Above-mentioned dam foundation gallery 3 is embedded by its end and is arranged on bank slope basement rock 1, but not overlapping of the prior art connects, and dam foundation gallery 3 and bank slope basement rock 1 are connected firmly, and avoid external applied load and structural joint 33 are opened or the distortion that misplaces.And the inside that structural joint 33 is positioned at bank slope basement rock 1 contacts few with water body, good water-proof effect.
Consider that the factor such as engineering construction quality and runtime dam deformation, foundation settlement causes the first border waterstop 331 in structural joint 33 to destroy, as later stage reparation, reinforcement, in the inner wall surface of described grouting adit 11, be provided with layer of concrete 111 as shown in Figure 1; Be provided with joint grouting pipe 112 in described layer of concrete 111, one end of described joint grouting pipe 112 is communicated with structural joint 33, and the other end of joint grouting pipe 112 is communicated with grouting adit 11.When the first border waterstop 331 in structural joint 33 destroys and can carry out grouting to waterproof process by joint grouting pipe 112 pairs of structural joints 33.
In order to strengthen the waterproof effect of structural joint 33 further, as depicted in figs. 1 and 2, be also provided with the second border waterstop 332 in described structural joint 33, described second border waterstop 332 is positioned at the circle of the first border waterstop 331; Second border waterstop 332 can carry out selective installation according to the stagnant water effect of Practical Project situation and the first border waterstop 331.
In order to ensure that the fixed effect of bank slope basement rock 1 pair of dam foundation gallery 3, described dam foundation gallery 3 embeds the part of bank slope basement rock 1 for entering rock section 34, described in enter rock section 34 length beeline be 1 ~ 3m; Because bank slope basement rock 1 has certain slope, so intersection structure can be formed when dam foundation gallery 3 embeds bank slope basement rock 1, the most weakness of length entering rock section 34 just refers to that dam foundation gallery 3 embeds the distance that in bank slope basement rock 1 part, embedded length is the shortest, dam foundation gallery 3 top enters rock section 34 length beeline when being arch is the length into rock section 34 top curve upper limb, as entered rock section 34 top in Fig. 1.
Concrete, in order to reduce maximum stress suffered by rock section 34 is bank slope basement rock 1 in, avoided strong constraint, described in enter rock section 34 external surface on be provided with elastic layer 341, as depicted in figs. 1 and 2; Elastic layer 341 can adopt SR flexible material to make; Elastic layer 341 can be filled between the external surface of rock section 34 and bank slope basement rock 1, is also fixed on the external surface of rock section 34 by fixed structure, such as: cover fixing by steel plate or rubber tile.
Concrete, described in enter rock section 34 and be provided with the parietal suture grout pipe 342 running through concrete wall 31; The top of dam foundation gallery 3 is generally arch, the preferred embodiment of parietal suture grout pipe 342 as shown in Figure 2, entering on rock section 34 top arcuate face to be arranged symmetrically with three endwall seam grout pipes 342, and entering a pre-buried endwall seam grout pipe 342 on side wall corresponding with upstream in rock section 34, set parietal suture grout pipe 342 is positioned at same plane and distance structure seam 0.5m.To enter on side wall corresponding with upstream in rock section 34 a pre-buried root distance from the parietal suture grout pipe 342 of structural joint 3.5 ~ 5.5m again.It should be noted that parietal suture grout pipe 342 extends only through concrete wall 31, elastic layer 341 can not be destroyed.When after earth and rockfill dam dam embankment to design altitude, use parietal suture grout pipe 342 to carry out backfill grouting to entering between rock section 34 and bank slope basement rock 1, dam foundation gallery 3 is connected with bank slope basement rock 1 closely, firm.
Again as shown in Figure 1, described dam foundation gallery 3 is provided with the cover plate 35 matched with dam foundation gallery 3, and side and the bank slope basement rock 1 of described cover plate 35 are fitted; Cover plate 35 can be formed and intercept between structural joint 33 and dam body.Concrete, described dam foundation gallery 3 is provided with flexible sealing layer 36 along cover plate 35 and the intersection of dam foundation gallery 3 joint.Flexible sealing layer 36 can and cover plate 35 coordinate can indirect communication between blocking-up structure seam 1 and dam body, even if waterstop occurs to destroy seepage in structural joint 3, core-wall material still can be avoided to be pulled away with infiltration, when grouting repair process is carried out to structural joint 3, grouting agent can not enter dam body core-wall, can not destroy dam structure.Flexible sealing layer 36 can adopt SR flexible material to make.
Claims (8)
1. dam foundation gallery and bank slope basement rock syndeton, comprises bank slope basement rock (1), Riverbed (2) and dam foundation gallery (3); Described dam foundation gallery (3) is arranged on Riverbed (2), the inner chamber (32) that dam foundation gallery (3) comprises concrete wall (31) and surrounded by concrete wall (31); It is characterized in that: the inside of described bank slope basement rock (1) is provided with grouting adit (11), the end of described dam foundation gallery (3) embeds and is arranged on bank slope basement rock (1) and is connected with grouting adit (11); Gap between described dam foundation gallery (3) and grouting adit (11) is structural joint (33), is provided with the first border waterstop (331) in described structural joint (33).
2. dam foundation gallery as claimed in claim 1 and bank slope basement rock syndeton, is characterized in that: the inner wall surface of described grouting adit (11) is provided with layer of concrete (111); Joint grouting pipe (112) is provided with in described layer of concrete (111), one end of described joint grouting pipe (112) is communicated with structural joint (33), and the other end of joint grouting pipe (112) is communicated with grouting adit (11).
3. dam foundation gallery as claimed in claim 1 and bank slope basement rock syndeton, it is characterized in that: be also provided with the second border waterstop (332) in described structural joint (33), described second border waterstop (332) is positioned at the circle of the first border waterstop (331).
4. dam foundation gallery as claimed in claim 1 and bank slope basement rock syndeton, it is characterized in that: described dam foundation gallery (3) is upper embeds the part of bank slope basement rock (1) for entering rock section (34), described in enter rock section (34) length beeline be 1 ~ 3m.
5. dam foundation gallery as claimed in claim 4 and bank slope basement rock syndeton, is characterized in that: described in enter rock section (34) external surface on be provided with elastic layer (341).
6. the dam foundation gallery as described in claim 4 or 5 and bank slope basement rock syndeton, is characterized in that: described in enter rock section (34) and be provided with the parietal suture grout pipe (342) running through concrete wall (31).
7. the dam foundation gallery according to any one of claim 1 to 5 and bank slope basement rock syndeton, it is characterized in that: described dam foundation gallery (3) is provided with the cover plate (35) matched with dam foundation gallery (3), side and the bank slope basement rock (1) of described cover plate (35) are fitted.
8. dam foundation gallery as claimed in claim 7 and bank slope basement rock syndeton, is characterized in that: described dam foundation gallery (3) is provided with flexible sealing layer (36) along cover plate (35) and the intersection of dam foundation gallery (3) joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728386.8A CN104404919B (en) | 2014-12-03 | 2014-12-03 | Dam foundation corridor and bank slope bedrock connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728386.8A CN104404919B (en) | 2014-12-03 | 2014-12-03 | Dam foundation corridor and bank slope bedrock connecting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104404919A true CN104404919A (en) | 2015-03-11 |
| CN104404919B CN104404919B (en) | 2017-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410728386.8A Active CN104404919B (en) | 2014-12-03 | 2014-12-03 | Dam foundation corridor and bank slope bedrock connecting structure |
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| CN (1) | CN104404919B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133647A (en) * | 2015-10-09 | 2015-12-09 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation corridor for earth-rock dam with deep-thick covering layer and construction method of dam foundation corridor |
| CN105239534A (en) * | 2015-10-09 | 2016-01-13 | 中国电建集团成都勘测设计研究院有限公司 | Connecting structure for dam foundation gallery and dam body core wall |
| CN114232671A (en) * | 2021-12-28 | 2022-03-25 | 中国水利水电建设工程咨询贵阳有限公司 | Dam edge waterproof connecting body and construction method thereof |
| CN115247408A (en) * | 2022-07-29 | 2022-10-28 | 中国电建集团华东勘测设计研究院有限公司 | Annular structural seam structure between concrete of riverbed dam foundation gallery and bank slope gallery |
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| JP2001262677A (en) * | 2000-03-14 | 2001-09-26 | Mentekkusu Kk | Waterproof structure for concrete structure and elastic waterproof sheet to use the same |
| CN202745006U (en) * | 2012-08-07 | 2013-02-20 | 中国水电顾问集团成都勘测设计研究院 | Core wall dam bank slope overlap joint type dam foundation gallery structure |
| CN203821311U (en) * | 2014-04-11 | 2014-09-10 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Water-stop structure for core-wall rock-fill dam inner gallery structural gap |
| CN204266170U (en) * | 2014-12-03 | 2015-04-15 | 中国电建集团成都勘测设计研究院有限公司 | A kind of dam foundation gallery syndeton |
-
2014
- 2014-12-03 CN CN201410728386.8A patent/CN104404919B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001262677A (en) * | 2000-03-14 | 2001-09-26 | Mentekkusu Kk | Waterproof structure for concrete structure and elastic waterproof sheet to use the same |
| CN202745006U (en) * | 2012-08-07 | 2013-02-20 | 中国水电顾问集团成都勘测设计研究院 | Core wall dam bank slope overlap joint type dam foundation gallery structure |
| CN203821311U (en) * | 2014-04-11 | 2014-09-10 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Water-stop structure for core-wall rock-fill dam inner gallery structural gap |
| CN204266170U (en) * | 2014-12-03 | 2015-04-15 | 中国电建集团成都勘测设计研究院有限公司 | A kind of dam foundation gallery syndeton |
Non-Patent Citations (1)
| Title |
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| 田景元等: "毛尔盖心墙堆石坝防渗墙与坝体防渗体连接形式", 《水利水电科技进展》, vol. 30, no. 4, 31 August 2010 (2010-08-31), pages 41 - 45 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133647A (en) * | 2015-10-09 | 2015-12-09 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation corridor for earth-rock dam with deep-thick covering layer and construction method of dam foundation corridor |
| CN105239534A (en) * | 2015-10-09 | 2016-01-13 | 中国电建集团成都勘测设计研究院有限公司 | Connecting structure for dam foundation gallery and dam body core wall |
| CN114232671A (en) * | 2021-12-28 | 2022-03-25 | 中国水利水电建设工程咨询贵阳有限公司 | Dam edge waterproof connecting body and construction method thereof |
| CN115247408A (en) * | 2022-07-29 | 2022-10-28 | 中国电建集团华东勘测设计研究院有限公司 | Annular structural seam structure between concrete of riverbed dam foundation gallery and bank slope gallery |
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| Publication number | Publication date |
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| CN104404919B (en) | 2017-02-22 |
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