CN109555086A - Rock-fill dams periphery crack structure and construction method - Google Patents

Rock-fill dams periphery crack structure and construction method Download PDF

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Publication number
CN109555086A
CN109555086A CN201910026315.6A CN201910026315A CN109555086A CN 109555086 A CN109555086 A CN 109555086A CN 201910026315 A CN201910026315 A CN 201910026315A CN 109555086 A CN109555086 A CN 109555086A
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China
Prior art keywords
body panel
toe board
dam body
rock
edge
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CN201910026315.6A
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CN109555086B (en
Inventor
周恒�
李学强
苗喆
邓成进
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PowerChina Northwest Engineering Corp Ltd
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PowerChina Northwest Engineering Corp Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B7/00Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/02Fixed barrages
    • E02B7/04Dams across valleys
    • E02B7/06Earth-fill dams; Rock-fill dams
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/16Sealings or joints
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/11Hard 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)
  • Building Environments (AREA)
  • Road Paving Structures (AREA)

Abstract

The present invention discloses a kind of rock-fill dams periphery crack structure and construction method, which includes: dam body panel, toe board and waterstop member, and dam body panel is laid on the outside for filling rockfill, and the surface of dam body panel has default gradient;Toe board is arranged along the edge in the outside of dam body panel, the outside of toe board connects with massif and basement rock, periphery fissure between the inside and dam body panel of toe board is ladder seam, ladder seam is successively cross-linked by multiple transverse joints and multiple longitudinal seams, transverse joint horizontal extension, longitudinal seam extends vertically, the perpendicular of transverse joint and longitudinal seam with dam body panel;Waterstop member is arranged at transverse joint and longitudinal seam.Rock-fill dams periphery crack structure of the invention not only facilitates dam body panel to construct, the shearing displacement at the periphery fissure between dam body panel and toe board can also be substantially eliminated, make it only be left to open displacement and depression two kinds of forms of displacement, improves the reliability of the waterproof of the waterstop member between the dam body panel of rock-fill dams and toe board.

Description

Rock-fill dams periphery crack structure and construction method
Technical field
The invention belongs to dam design and construction technique fields, more particularly to a kind of rock-fill dams periphery crack structure and construction Method.
Background technique
Concrete rock-fill dams are that closing is formed together by the dam body panel and the grout curtain of toe board lower part on dam top completely Seepage prevention system, the periphery fissure between toe board and dam body panel need to use corresponding water sealing structure.Under toe board and dam body panel Portion's brace foundation is different, and toe board is generally located on basement rock, and dam body lower panels are to fill rockfill, and the two deformation mechanism is poor It is different larger, moderate finite deformation will be generated in effect of water pressure next week side seam, and periphery fissure deforms the reliability of size and water sealing structure Directly affect dam safety.Toe board causes the periphery fissure between toe board and dam body panel to become generally with dam body panel oblique at present Position complicated condition, under effect of water pressure, shearing, depression and opening displacement value are larger at periphery fissure, are unfavorable for the antiseepage of dam Property.
Summary of the invention
In consideration of it, it is an object of the invention to overcome the above problem or at least be partially solved or alleviate the above problem. Provide a kind of rock-fill dams periphery crack structure and construction method.
The technical solution used to solve the technical problems of the present invention is that: propose a kind of rock-fill dams periphery crack structure, comprising: dam Honorable plate, toe board and waterstop member, the dam body panel are laid on the outside for filling rockfill, the surface tool of the dam body panel There is default gradient;The toe board is arranged along the edge in the outside of the dam body panel, the outside of the toe board and massif and base Lithofacies connect, and the periphery fissure between the inside of the toe board and the dam body panel is ladder seam, and the ladder seam is by multiple transverse directions Seam and multiple longitudinal seams are successively cross-linked, and the transverse joint horizontal extension, the longitudinal seam extends vertically, described The perpendicular of transverse joint and the longitudinal seam with the dam body panel;The waterstop member is arranged in the transverse direction At seam and the longitudinal seam.
Rock-fill dams periphery according to the present invention crack structure, the ladder between dam body panel and toe board are stitched by being successively cross-linked Multiple transverse joints and multiple longitudinal seams constitute.Multiple transverse joints and longitudinal seam advise the lower edge of dam body panel Then shape facilitates dam body panel to construct.And dam body panel and toe board transverse joint can keep out dam body panel and toe board it Between longitudinal shear displacement, can be kept out at transverse joint between dam body panel and toe board lateral shear displacement.Make it only It is remaining to open displacement and depression two kinds of forms of displacement, reduce periphery fissure deformation, improves the dam body panel and toe board of rock-fill dams Between waterstop member waterproof reliability.
Rock-fill dams periphery crack structure of the invention also has following optional feature.
Optionally, the waterstop member includes Copper water stop, and the Copper water stop is arranged in the transverse joint and the longitudinal direction The inner end of seam.
Rock-fill dams periphery according to the present invention crack structure, transverse joint of the Copper water stop pad between dam body panel and toe board and The inner end of longitudinal seam, Copper water stop have 180 ° of return portion, can cope with change at the periphery fissure between dam body panel and toe board Shape can tightly block the infiltration of the inside of dam body panel.
Optionally, rubber sheet gasket is provided on the inside of the Copper water stop.
Rock-fill dams periphery according to the present invention crack structure, infiltration can be isolated in rubber sheet gasket of the pad on the inside of Copper water stop stops with copper Contact between water has anti-rust action to Copper water stop.
Optionally, the waterstop member includes pitch plank, and the pitch plank is filled in the transverse joint and institute It states in longitudinal seam.
Rock-fill dams periphery according to the present invention crack structure, pitch plank are filled in transverse joint in longitudinal seam, drip Green plank can expand after absorbing water, can tightly block transverse joint and longitudinal seam.
Optionally, the waterstop member includes compounded rubber stick, compounded rubber stick setting in the transverse joint and The external port of the longitudinal seam.
Rock-fill dams periphery according to the present invention crack structure, the V-shaped opening in the outer end of transverse joint and longitudinal seam, compound rubber Glue stick is filled in v-shaped opening, and the contact area of the two sides of compounded rubber stick and periphery fissure can be improved, and improves compounded rubber stick Leakproofness.
Optionally, the outer end of the transverse joint and the longitudinal seam is covered with cover plate, the two sides difference of the cover plate It is fixed on the dam body panel and the toe board by connector.
Rock-fill dams periphery according to the present invention crack structure, cover plate are metal material, along step stitch in transverse joint and Longitudinal seam is laid with, and the two sides of cover plate ride on dam body panel and toe board respectively, and fixed by swell fixture, then reused Edge sealing agent carries out edge sealing to the edge of cover plate.
Optionally, plastic filler is filled between the cover plate and the compounded rubber stick.
A kind of construction method of rock-fill dams periphery crack structure builds base requirement according to toe board, first selects the inner side edge of toe board The position of the longitudinal edge on edge, then supplements the position on widthwise edge edge, and longitudinal edge is parallel to perpendicular to the axis of dam, widthwise edge edge The axis of dam to form the corresponding foundation excavation of step-like edge progress along connecting according to longitudinal edge and widthwise edge, and make template Casting concrete forms toe board;
Rubber sheet gasket is being placed with the position of toe board seam after dam embankment, is fixing Copper water stop;
After the concrete of toe board reaches design strength, in seam crossing filled bitumen plank, and casting concrete forms dam body face Plate forms step-like periphery fissure between dam body panel and toe board;
Then filled composite rubber bar in v-shaped opening outside periphery fissure fills plastic filler on the top of compounded rubber stick, so Cover plate is pasted on the outside of plastic filler afterwards, edge sealing is carried out to each edge of the cover plate pasted with edge sealing agent, finally uses band steel again And expansion bolt is anchored as connector.
The beneficial effects of the invention are as follows the lower edge regular shapes for making dam body panel, and dam body panel is not only facilitated to construct, The shearing displacement at the periphery fissure between dam body panel and toe board can be also substantially eliminated, it is made only to be left to open displacement and depression Conjugate two kinds of forms.The reliability of the waterproof of the waterstop member between the dam body panel of rock-fill dams and toe board is improved, can be solved 200m grades or more of superelevation rock periphery fissure deforms excessive problem.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter. Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is a kind of structural schematic diagram of embodiment of rock-fill dams periphery crack structure of the invention;
Fig. 2 is the schematic diagram of the section structure in Fig. 1 at A-A;
Fig. 3 is the schematic diagram of the section structure in Fig. 1 at B-B.
In the above figure: 1 toe board;2 dam body panels;3 transverse joints;4 longitudinal seams;5 axis of dams;6 Copper water stops; 7 rubber sheet gaskets;8 compounded rubber sticks;9 cover plates;10 connectors;11 plastic fillers.
Specific embodiment
With reference to Fig. 1, one embodiment of a kind of rock-fill dams periphery crack structure according to the present invention, rock-fill dams periphery of the invention Crack structure includes dam body panel 2, toe board 1 and waterstop member, and dam body panel 2 is laid on the outside for filling rockfill, dam body panel 2 Surface there is default gradient;Toe board 1 is arranged along the edge in the outside for stating dam body panel 2, the outside of toe board 1 and massif and base Lithofacies connect, and the ladder seam between dam body panel 2 and toe board 1 is connect by the multiple transverse joints 3 being successively cross-linked and multiple longitudinal directions Seam 4 is constituted.Transverse joint 3 and longitudinal seam 4 are successively cross-linked, and transverse joint 3 is parallel with the axis of dam 5, longitudinal seam 4 with The axis of dam 5 is perpendicular, the perpendicular of transverse joint 3 and longitudinal seam 4 with dam body panel 2;Make the following of dam body panel 2 Along being regular shape, not only facilitates dam body panel 2 to construct, can also substantially eliminate the periphery fissure between dam body panel 2 and toe board 1 The shearing at place conjugates, it is made only to be left to open to conjugate to conjugate two kinds of forms with depression.Improve the dam body panel 2 and toe of rock-fill dams The reliability of the waterproof of waterstop member between plate 1 can solve 200m grades or more of superelevation rock periphery fissure and deform Big problem.
Referring to figs. 2 and 3, according to an embodiment of the present, waterstop member includes Copper water stop 6, and Copper water stop 6 pads on dam The inner end of transverse joint 3 and longitudinal seam 4 between honorable plate 2 and toe board 1, Copper water stop 6 is between dam body panel 2 and toe board 1 Periphery fissure at 180 ° of return portion, deformation can be coped with, can tightly block the infiltration of the inside of dam body panel 2.
Referring to figs. 2 and 3, according to an embodiment of the present, the inside of Copper water stop 6 is provided with rubber sheet gasket 7.Rubber The contact between infiltration and Copper water stop 6 can be isolated in gasket 7, have anti-rust action to Copper water stop 6.
According to an embodiment of the present, waterstop member includes pitch plank (not shown), the filling of pitch plank In transverse joint 3 and in longitudinal seam 4.Pitch plank can expand after absorbing water, can tightly block transverse joint 3 and longitudinal direction connects Seam 4.
Referring to figs. 2 and 3, according to an embodiment of the present, waterstop member includes compounded rubber stick 8, compounded rubber The external port of transverse joint 3 and longitudinal seam 4 is arranged in stick 8.The V-shaped opening in the outer end of transverse joint 3 and longitudinal seam 4, it is multiple It closes rubber bar 8 to be filled in v-shaped opening, the contact area of the two sides of compounded rubber stick 8 and periphery fissure can be improved, improve compound The leakproofness of rubber bar 8.
Referring to figs. 2 and 3, according to an embodiment of the present, the outer end of transverse joint 3 and longitudinal seam 4 is covered with Cover plate 9, the two sides of cover plate 9 pass through connector 10 respectively and are fixed on dam body panel 2 and toe board 1.Cover plate 9 is metal material, edge Transverse joint 3 in step seam and longitudinal seam 4 be laid with, the two sides of cover plate 9 ride over respectively on dam body panel 2 and toe board 1, and It is fixed by swell fixture, then reuses edge sealing agent and edge sealing is carried out to the edge of cover plate 9.
Referring to figs. 2 and 3, according to an embodiment of the present, plasticity is filled between cover plate 9 and compounded rubber stick 7 Filler 11.Compounded rubber stick 8 can be pressed together in transverse joint 3 on longitudinal seam 4 by plastic filler 11, and plastic filler 11 is played The effect in gap between cover plate 9 and compounded rubber stick 8 is filled, any plastic filler 11 can be filled, fill out at this to plasticity Material 11 is not enumerated one by one.
The work progress of the above embodiments of rock-fill dams periphery crack structure of the invention is as follows:
Base requirement is built according to toe board 1, the position of the longitudinal edge on the inner side edge edge of toe board 1 is first selected, then supplements widthwise edge The position on edge, longitudinal edge is perpendicular to the axis of dam 5, and widthwise edge is along the axis of dam 5 is parallel to, according to longitudinal edge and widthwise edge along phase It connects to form the corresponding foundation excavation of step-like edge progress, and makes template casting concrete, form toe board 1.
Rubber sheet gasket 7 is being placed with the position of 1 seam of toe board after dam embankment, is fixing Copper water stop 6.
After the concrete of toe board 1 reaches design strength, in seam crossing filled bitumen plank, and casting concrete forms dam Honorable plate 2, forms step-like periphery fissure between dam body panel 2 and toe board 1.
Then filled composite rubber bar 8 in v-shaped opening outside periphery fissure fills plasticity on the top of compounded rubber stick 8 Then cover plate 9 is pasted onto 11 outside of plastic filler, carries out edge sealing to each edge of cover plate 8 pasted with edge sealing agent by filler 11, Finally band steel and expansion bolt is used to be anchored as connector 10 again.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art, It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims Subject to.

Claims (8)

1. a kind of rock-fill dams periphery crack structure characterized by comprising
Dam body panel (2), the dam body panel (2) are laid on the outside for filling rockfill, the surface tool of the dam body panel (2) There is default gradient;
Toe board (1), the toe board (1) are arranged along the edge in the outside of the dam body panel (2), the outside of the toe board (1) Connect with massif and basement rock, the periphery fissure between the inside and the dam body panel (2) of the toe board (1) is ladder seam, described Ladder seam is successively cross-linked by multiple transverse joints (3) and multiple longitudinal seams (4), the transverse joint (3) and the axis of dam (5) parallel, the longitudinal seam (4) and the axis of dam (5) are perpendicular, and the transverse joint (3) and the longitudinal seam (4) are equal With the perpendicular of the dam body panel (2);
Waterstop member, the waterstop member setting is at the transverse joint (3) and at the longitudinal seam (4).
2. rock-fill dams periphery according to claim 1 crack structure, which is characterized in that the waterstop member includes Copper water stop (6), the Copper water stop (6) is arranged in the inner end of the transverse joint (3) and the longitudinal seam (4).
3. rock-fill dams periphery according to claim 2 crack structure, which is characterized in that the inside of the Copper water stop (6) is arranged There are rubber sheet gasket (7).
4. rock-fill dams periphery according to claim 1 crack structure, which is characterized in that the waterstop member includes bituminous wood Plate, the pitch plank are filled in the transverse joint (3) and neutralize in the longitudinal seam (4).
5. rock-fill dams periphery according to claim 1 crack structure, which is characterized in that the waterstop member includes compounded rubber Stick (8), external port of compounded rubber stick (8) setting in the transverse joint (3) and the longitudinal seam (4).
6. rock-fill dams periphery according to claim 5 crack structure, which is characterized in that the transverse joint (3) and described vertical It is covered with cover plate (9) to the outer end of seam (4), the two sides of the cover plate (9) pass through connector (10) respectively and are fixed on the dam On honorable plate (2) and the toe board (1).
7. rock-fill dams periphery according to claim 6 crack structure, which is characterized in that the cover plate (9) and the compound rubber Plastic filler (11) are filled between glue stick (8).
8. a kind of construction method of rock-fill dams periphery crack structure, which is characterized in that build base requirement according to toe board, first select toe board Inner side edge edge longitudinal edge position, then supplement widthwise edge edge position, longitudinal edge is perpendicular to the axis of dam, widthwise edge Along the axis of dam is parallel to, the corresponding foundation excavation of step-like edge progress is formed along connecting according to longitudinal edge and widthwise edge, and Template casting concrete is made, toe board is formed;
Rubber sheet gasket is being placed with the position of toe board seam after dam embankment, is fixing Copper water stop;
After the concrete of toe board reaches design strength, in seam crossing filled bitumen plank, and casting concrete forms dam body face Plate forms step-like periphery fissure between dam body panel and toe board;
Then filled composite rubber bar in v-shaped opening outside periphery fissure fills plastic filler on the top of compounded rubber stick, so Cover plate is pasted on the outside of plastic filler afterwards, edge sealing is carried out to each edge of the cover plate pasted with edge sealing agent, finally uses band steel again And expansion bolt is anchored as connector.
CN201910026315.6A 2019-01-11 2019-01-11 Rock-fill dam peripheral seam structure and construction method Active CN109555086B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1760462A (en) * 2005-11-13 2006-04-19 中国水电顾问集团华东勘测设计研究院 Waterstop structure of peripheral joint of rock fill dam with face slab, and construction method
CN101748708A (en) * 2009-12-23 2010-06-23 中国水电顾问集团华东勘测设计研究院 4.5 or 4m type high concrete panel loose rock dam toe board structure and job practices thereof
CN103590369A (en) * 2013-12-03 2014-02-19 深圳市城市优筑科技有限公司 Waterproof structure of concrete face rockfill dam joint and construction process
CN105297680A (en) * 2015-11-29 2016-02-03 中国水利水电科学研究院 Antiseismic design method of impervious body of 200 m high concrete face rockfill dam
CN209652881U (en) * 2019-01-11 2019-11-19 中国电建集团西北勘测设计研究院有限公司 Rock-fill dams periphery crack structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1760462A (en) * 2005-11-13 2006-04-19 中国水电顾问集团华东勘测设计研究院 Waterstop structure of peripheral joint of rock fill dam with face slab, and construction method
CN101748708A (en) * 2009-12-23 2010-06-23 中国水电顾问集团华东勘测设计研究院 4.5 or 4m type high concrete panel loose rock dam toe board structure and job practices thereof
CN103590369A (en) * 2013-12-03 2014-02-19 深圳市城市优筑科技有限公司 Waterproof structure of concrete face rockfill dam joint and construction process
CN105297680A (en) * 2015-11-29 2016-02-03 中国水利水电科学研究院 Antiseismic design method of impervious body of 200 m high concrete face rockfill dam
CN209652881U (en) * 2019-01-11 2019-11-19 中国电建集团西北勘测设计研究院有限公司 Rock-fill dams periphery crack structure

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