CN209636736U - Gravity dam upstream face geomembrane anti-seepage discharge structure - Google Patents
Gravity dam upstream face geomembrane anti-seepage discharge structure Download PDFInfo
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- CN209636736U CN209636736U CN201920081140.4U CN201920081140U CN209636736U CN 209636736 U CN209636736 U CN 209636736U CN 201920081140 U CN201920081140 U CN 201920081140U CN 209636736 U CN209636736 U CN 209636736U
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Abstract
The utility model relates to a kind of gravity dam upstream face geomembrane anti-seepage discharge structures.The gravity dam upstream face geomembrane anti-seepage discharge structure that the purpose of the utility model is to provide a kind of structures is simple, easy for construction, cost is relatively low, convenient for safeguarding.The technical solution of the utility model is: a kind of gravity dam upstream face geomembrane anti-seepage discharge structure, it is characterised in that: geomembrane anti-seepage structure is arranged in gravity dam dam body upstream face；The geomembrane anti-seepage structure includes the geomembrane of several width covering dam body upstream faces, geomembrane is fixed on dam body upstream face through anchoring mechanism, and several mutually independent antiseepage subregions are separated into through anchoring mechanism between geomembrane and dam body upstream face, antiseepage subregion is embedded in the connection intracorporal collector drain in dam of the drainpipe in dam body in advance.The utility model is suitable for gravity dam, stone masonry dam, rock-mounded concrete dam etc..
Description
Technical field
The utility model relates to a kind of gravity dam upstream face geomembrane anti-seepage discharge structures.Suitable for gravity dam, stone masonry dam,
Rock-mounded concrete dam etc..
Background technique
Gravity dam is in addition to three kinds of Compacted Concrete Gravity Dam Section, normal concrete gravity dam and stone-laying gravity dam main dams at present
Outside type, the novel gravities such as rock-fill concrete gravity dam dam dam type is also developed in recent years.No matter any gravity dam, dam body seepage
Design is all the emphasis of dam structure design, and corresponding antiseepage position construction is also the emphasis of quality control on construction.
Although dam concrete itself has certain seepage capability, or antiseepage higher for head is higher ranked
Generally special impervious concrete can be arranged in upstream face to reduce engineering and integrally invest and the control of integral construction quality in gravity dam
It is required that.But it is more due to influencing concrete anti-seepage performance factor, other than match ratio, the control of casting process quality, maintenance item
Part, external operating environment etc. can impact the seepage capability of concrete structure finished product, especially temperature in work progress
The interlayer seam of the generation in crack and different storehouse surface binding sites.Although stone masonry dam and rock-mounded concrete dam significantly reduce gluing
The dosage of material reduces the probability of thermal cracking generation, but construction technology itself easily leads to the presence in gap, forms infiltration
Channel.Therefore in practical projects, gravity dam seepage problem is also relatively conventional, and some engineerings even carry out the reinforcement of entire dam body
Perhaps entirely the Anti-seeping technology of dam facing causes investment or the increase of operation and maintenance cost for grouting.
Utility model content
Technical problem to be solved by the utility model is: in view of the above problems, provide that a kind of structure is simple, construction
The gravity dam upstream face geomembrane anti-seepage discharge structure convenient, cost is relatively low, convenient for safeguarding.
The technical scheme adopted by the utility model is a kind of gravity dam upstream face geomembrane anti-seepage discharge structure, special
Sign is: geomembrane anti-seepage structure is arranged in gravity dam dam body upstream face；
The geomembrane anti-seepage structure includes the geomembrane of several width covering dam body upstream faces, and geomembrane is solid through anchoring mechanism
Several mutually independent antiseepages point are separated into through anchoring mechanism due to dam body upstream face, and between geomembrane and dam body upstream face
Area, antiseepage subregion are embedded in the connection intracorporal collector drain in dam of the drainpipe in dam body in advance.
The anchoring mechanism has connection anchoring mechanism for connecting and fixing geomembrane described in adjacent two width, for solid
Determine the lateral anchoring mechanism inside geomembrane and the periphery anchoring mechanism for fixing geomembrane anti-seepage structure edge.
The connection anchoring mechanism includes the SR connection bulge being set between adjacent two width geomembrane, and along geomembrane
The divider and SR adhesive tape, divider of edge setting are set between dam body upstream face and geomembrane, and SR adhesive tape is set to geotechnique
Film surface, SR adhesive tape and SR connection bulge surface collectively cover SR rubber cover plate, and SR serum cap on piece corresponds to divider equipped with angle
Steel, the bolt attaching nut that angle steel is sequentially passed through angle steel, SR rubber cover plate, SR adhesive tape, geomembrane and divider are fixed on dam
Body upstream face.
The transverse joint of the dam body is located between geomembrane described in adjacent two width, the institute between the adjacent two width geomembrane
The center line for stating SR connection bulge is corresponding with transverse joint.
The transverse direction anchoring mechanism includes the divider and SR adhesive tape of vertical geomembrane length direction arrangement, divider setting
Between dam body upstream face and geomembrane, SR adhesive tape is set to geotechnological film surface, and SR adhesive tape surface covers SR rubber cover plate, SR rubber
Glue cover plate is equipped with angle steel, and the bolt that angle steel is sequentially passed through angle steel, SR rubber cover plate, SR adhesive tape, geomembrane and divider is matched
It closes nut and is fixed on dam body upstream face.
The periphery anchoring mechanism includes that the divider arranged along geomembrane anti-seepage structure edge and SR adhesive tape, divider are set
It is placed between dam body upstream face and geomembrane, SR adhesive tape is set to geotechnological film surface, and corresponding geomembrane outer edge side is equipped with SR
Edge sealing bulge, SR adhesive tape surface cover SR rubber cover plate, and SR serum cap on piece is equipped with angle steel, and angle steel is sequentially passed through angle steel, SR
Rubber cover plate, SR adhesive tape, geomembrane and divider bolt attaching nut be fixed on upstream face, the SR rubber cover plate is outward
Extend and cover SR edge sealing bulge, the outside of SR rubber cover plate is closed by HK edge sealing agent and the paste of dam body upstream face.
The divider includes being set in turn in upstream face to SR primer, SR adhesive tape, the SR rubber between the geomembrane
Cover plate and SR adhesive tape.
When the drainpipe passes through the transverse joint of dam body, and hole diameter coaxial with drainpipe is set in transverse joint two sides and is greater than drainpipe
The slot hole of caliber, the draining pipeline section in slot hole are in bending.
Attractive joint is arranged in dam body upstream face in the transverse joint of corresponding dam body, stitches interior filling high density degree closed-cell foam plate, and correspondence lures
Vee gutter is arranged in upstream face in seam guide, and neoprene stick is arranged in vee gutter.
A kind of construction method of gravity dam upstream face geomembrane anti-seepage discharge structure, which comprises the following steps:
Carry out dam construction, pre-buried drainpipe in work progress；
Quality examination and finishing are carried out to the dam body upstream face that construction is completed, processing lacks the construction quality that geomembrane is unfavorable
It falls into；
Anchor line is determined in dam body upstream face according to antiseepage block planning, measures flatness along anchor line, not to flatness
The position met the requirements is handled；
It is laid with geomembrane from bottom to top, the intermediate position for being laid with the antiseepage subregion for being laid with geomembrane from below every time is opened
Begin；
Along anchor line, anchoring mechanism is set.
The beneficial effects of the utility model are: the utility model is anti-instead of gravity dam using independent geomembrane anti-seepage structure
Infiltration layer simplifies dam structure subregion, reduces construction technical requirement, reduces construction investment.Geomembrane using subregion anchoring by the way of,
And drainpipe is arranged in corresponding each antiseepage subregion, not only can accurately carry out infiltration measurement, can also carry out to breakthrough quasi-
It determines position, is handled convenient for operation and maintenance and impervious barrier.Geomembrane single width independently anchors, and reduces the construction that geomembrane is vertically laid with
Difficulty.It is connected between geotechnological film web and width using SR connection bulge, connecting portion antiseepage high reliablity.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of embodiment.
Fig. 2 is the arrangement schematic diagram of dam body upstream face geomembrane in embodiment.
Fig. 3 is the structural schematic diagram that anchoring mechanism is connected in embodiment.
Fig. 4 is the portion the A enlarged diagram in Fig. 3.
Fig. 5 is transverse joint and the structural schematic diagram that connect anchoring mechanism in embodiment.
Fig. 6 is the enlarged diagram in the portion B in Fig. 5.
Fig. 7 is the structural schematic diagram of lateral anchoring mechanism in embodiment.
Fig. 8 is the portion the C enlarged diagram in Fig. 7.
Fig. 9 is the structural schematic diagram of periphery anchoring mechanism in embodiment.
Figure 10 is the portion D enlarged diagram in Fig. 9.
Figure 11 is the structural schematic diagram of drainpipe in embodiment.
Figure 12 is the schematic diagram of drainpipe water entering surface in embodiment.
Specific embodiment
As shown in Figure 1 and Figure 2, the present embodiment is a kind of gravity dam upstream face geomembrane anti-seepage discharge structure, on gravity dam dam
Body upstream face be arranged geomembrane anti-seepage structure 6, geomembrane anti-seepage structure 6 include several width vertically to laying and covering dam body on
The geomembrane 601 in trip face, geomembrane 601 are fixed on dam body upstream face through anchoring mechanism 7.
Geomembrane 601 is thick not less than 2mm in this example, and geomembrane 601 is one film of geomembrane or two cloth, using a cloth one
Geotextiles side is water blocking side when film, and composite geo-membrane 601 reserves 10cm range light film on periphery.The material root of geomembrane 601
Selection is required according to environment, antiseepage.
There is anchoring mechanism 7 connection for connecting and fixing the adjacent two width geomembrane 601 in left and right to anchor in the present embodiment
Mechanism, all side anchors for the laterally lateral anchoring mechanism of fixed geomembrane 601 and for fixing 6 edge of geomembrane anti-seepage structure
Gu mechanism.
As shown in Figure 3, Figure 4, connection anchoring mechanism includes the SR connection bulge being set between adjacent two width geomembrane 601
16, and along 601 edge of geomembrane setting divider and SR adhesive tape 12, divider be set to dam body upstream face and geomembrane
Between 601, SR adhesive tape 12 is set to 601 surface of geomembrane, and SR adhesive tape 12 and 16 surface of SR connection bulge collectively cover SR rubber
Cover plate 13 corresponds to divider on SR rubber cover plate 13 equipped with angle steel 14, and angle steel 14 is sequentially passed through angle steel 14, SR rubber cover plate
13,10 attaching nut 15 of bolt of SR adhesive tape 12, geomembrane 601 and divider is fixed on dam body upstream face.
As shown in Figure 5, Figure 6, when encountering the transverse joint 102 of dam body, geomembrane 601 is respectively arranged in the left and right of transverse joint 102
Two sides, and the center line for connecting the SR connection bulge 16 at left and right sides of the transverse joint in the connection anchoring mechanism of geomembrane 601 is located at
102 position of transverse joint.Using the transverse joint 102 for not setting sealing in the present embodiment, 102 structure of transverse joint can be the transverse joint 102 of perforation,
Attractive joint can be set within the scope of upstream face 1m, and concreting without longitudinal joint (roll or build) cuts to be formed and not penetrate through using grooving machine afterwards
Transverse joint 102.The wide 1cm of transverse joint, stitches interior filling high density degree closed-cell foam plate 18, and vee gutter, bottom in slot is arranged in transverse joint upstream face
The neoprene stick 19 of portion's setting diameter phi 20mm.
As shown in Figure 7, Figure 8, lateral anchoring mechanism is laid with direction every one of 10~20m setting, laterally along geomembrane 601
Anchoring mechanism includes that the divider of vertical 601 length direction of geomembrane arrangement and SR adhesive tape 12, divider are set to dam body upstream
Between face and geomembrane 601, SR adhesive tape 12 is set to 601 surface of geomembrane, and 12 surface of SR adhesive tape covers SR rubber cover plate 13, SR
Rubber cover plate 13 is equipped with angle steel 14, and angle steel 14 is sequentially passed through angle steel 14, SR rubber cover plate 13, SR adhesive tape 12, geomembrane 601
Dam body upstream face is fixed on 10 attaching nut 15 of bolt of divider.
As shown in Figure 9, Figure 10, periphery anchoring mechanism includes the divider and SR along 6 edge of geomembrane anti-seepage structure arrangement
Adhesive tape 12, divider are set between dam body upstream face and geomembrane 601, and SR adhesive tape 12 is set to 601 surface of geomembrane, corresponding
6 outer edge side of geomembrane anti-seepage structure is equipped with SR edge sealing bulge 17, and 12 surface of SR adhesive tape covers SR rubber cover plate 13, SR rubber
Cover plate 13 extends outward and covers SR edge sealing bulge 17, and the outside of SR rubber cover plate 13 passes through HK edge sealing agent and dam body upstream face
Paste closing.In this example SR rubber cover plate 13 be equipped with angle steel 14, angle steel 14 sequentially passed through angle steel 14, SR rubber cover plate 13,
10 attaching nut 15 of bolt of SR adhesive tape 12, geomembrane 601 and divider is fixed on upstream face.
Divider includes being set in turn in upstream face to the SR primer 11 between geomembrane 601, SR adhesive tape in the present embodiment
12, SR rubber cover plate 13 and SR adhesive tape 12.
Through connection anchoring mechanism, lateral anchoring mechanism and periphery between geomembrane 601 and dam body upstream face in the present embodiment
Anchoring mechanism is separated to form several mutually independent antiseepage subregions.Corresponding each antiseepage subregion is embedded in the drainpipe in dam body in advance
The 8 connection intracorporal collector drains 3 in dam, the bottom of the water inlet end connection antiseepage subregion of drainpipe 8, the water outlet connection of drainpipe 8
Collector drain 3.As shown in Figure 11, Figure 12, a water collecting funnel 801, water collecting funnel is arranged in the water inlet end of drainpipe 8 in this example
801 water entering surface is a stainless-steel sheet with mesh 802.Drainpipe 8 casting concrete when buried according to the progress of pouring
It is located in concrete, 801 water entering surface of water collecting funnel is flushed with the upstream face of dam body.
It is set when drainpipe 8 passes through the transverse joint 102 of dam body in the present embodiment in 102 two sides of transverse joint for the deformation for adapting to dam
The slot hole 101 that and hole diameter coaxial with drainpipe 8 is greater than 8 caliber of drainpipe is set, and 8 sections of drainpipe be located in slot hole 101 are in curved
Curved (see Fig. 5), to guarantee there are enough deformation spaces when the changing of the relative positions occurs for dam transverse joint 102.
Dam body includes the 1~2m thickness for being set to base surface bottom and the blinding concrete with antiseepage function in the present embodiment
2, and the dam body main body 1 being set on blinding concrete 2.1 structural material of dam body main body can be used normal concrete, roll it is mixed
Solidifying soil, rock-fill concrete, laying of markstone concrete or stone masonry etc., concrete gradation use fully graded concrete.Dam foundation upstream is set
It sets grout curtain 4 and carries out Anti-seeping technology, drainage hole 5 is arranged in curtain downstream.
The specific implementation step of the present embodiment is as follows:
S01, excavating and complete to pour blinding concrete 2 on the basis of treated.
S02, arrange that carrying out dam body main body 1 constructs according to dam structure, according to 601 Drainage Design of geomembrane in work progress
The pre-buried drainpipe 8 of scheme.
S03, curtain grouting in foundation of dam 4 is carried out.
S04, carry out the construction of downstream row water hole 5 (S03-4 constructions can carry out simultaneously with following S05-S16, intert into
Row carries out after completing S16).
S05, the dam facing surface quality inspection of dam body upstream and finishing are carried out, to wedge angle, pit-hole, honeycomb, pitted skin etc. to geotechnique
The unfavorable Construction defect of film 601 is handled.
S06, the block planning being laid with according to geomembrane 601, determine anchor line, smooth using guiding ruler measurement along anchor line
Degree, the position for being unsatisfactory for requiring for flatness are handled, and cut surface concrete except particularly apparent sunken position uses
Backfill outside levelling, general place prevents the fill concrete of thin layer based on grinding process.
S07, it positioned according to the anchor point of design, drill 9, cleaning, bolt 10 is installed.The spacing of anchor bolt is general
For 20~40cm, can be determined according to the requirement of antiseepage head in conjunction with test.
S08, dam body upstream face is cleaned, check water drain funnel upstream face eyelet and the eyelet of blocking is carried out clear
Reason.
S09, by anchor structure requirement on the concrete of anchor line brushing twice SR primer 11.
S10, it is laid with geomembrane 601 from bottom to top, is laid with has been laid in the antiseepage subregion of geomembrane 601 from below every time
Between position start.
S11, SR adhesive tape 12, SR rubber cover plate 13, SR adhesive tape 12, geomembrane 601, SR adhesive tape are successively laid at anchoring position
12, then SR rubber cover plate 13 carries out positioning and anchoring using nut 15 and wooden gasket.
S12, lateral fixation and positioning and anchoring at the top of 601 antiseepage block of geomembrane are carried out using same method.
S13, according to the step of S10~S12 upwards installation until dam crest.
S14, the installation for carrying out anchor structure to dam bottom anchor side according to anchor structure.
S15, it is laid with the adjacent geomembrane 601 in left and right according to step S10~14, completes positioning and anchoring.
S16, location nut 15 and gasket are removed, angle steel 14 is installed, completed bolt 10 according to the torque of 120kNm and anchor.
It needs to remove location nut 15 and gasket paragraph by paragraph for splicing position between width, pastes SR connection bulge 16,102 position of dam transverse joint
The neoprene stick 19 of slot bottom installation diameter 20mm before SR connection bulge 16 is arranged.Bottom anchor structure is installed trailing flank
SR edge sealing bulge 17 is clogged, and the SR cover plate at top is pasted on dam facing concrete with HK edge sealing agent.This step can be completed
Intert after being laid with behind one antiseepage area with other region laying constructions and carries out.
Claims (9)
1. a kind of gravity dam upstream face geomembrane anti-seepage discharge structure, it is characterised in that: soil is arranged in gravity dam dam body upstream face
Work film leakage preventing structure (6)；
The geomembrane anti-seepage structure (6) includes the geomembrane (601) of several width covering dam body upstream faces, geomembrane (601) warp
Anchoring mechanism (7) is fixed on dam body upstream face, and is separated between geomembrane (601) and dam body upstream face through anchoring mechanism (7)
Several mutually independent antiseepage subregions, antiseepage subregion are embedded in the connection intracorporal collector drain in dam of the drainpipe (8) in dam body in advance
(3)。
2. gravity dam upstream face geomembrane anti-seepage discharge structure according to claim 1, it is characterised in that: the anchorage machine
Structure (7) has for connecting and fixing the connection anchoring mechanism of geomembrane (601) described in adjacent two width, for fixing geomembrane
(601) internal lateral anchoring mechanism and the periphery anchoring mechanism for fixing geomembrane anti-seepage structure (6) edge.
3. gravity dam upstream face geomembrane anti-seepage discharge structure according to claim 2, it is characterised in that: the connection anchor
Gu mechanism includes the SR connection bulge (16) being set between adjacent two width geomembrane (601), and along geomembrane (601) edge
The divider and SR adhesive tape (12) of setting, divider are set between dam body upstream face and geomembrane (601), and SR adhesive tape (12) is set
It is placed in geomembrane (601) surface, SR adhesive tape (12) and SR connection bulge (16) surface collectively cover SR rubber cover plate (13), SR rubber
Divider is corresponded on glue cover plate (13) equipped with angle steel (14), angle steel (14) sequentially passed through angle steel (14), SR rubber cover plate (13),
Bolt (10) attaching nut (15) of SR adhesive tape (12), geomembrane (601) and divider is fixed on dam body upstream face.
4. gravity dam upstream face geomembrane anti-seepage discharge structure according to claim 3, it is characterised in that: the dam body
Transverse joint (102) is located between geomembrane (601) described in adjacent two width, described between the adjacent two width geomembrane (601)
The center line of SR connection bulge (16) is corresponding with transverse joint (102).
5. gravity dam upstream face geomembrane anti-seepage discharge structure according to claim 2, it is characterised in that: the transverse direction anchor
Gu mechanism includes the divider and SR adhesive tape (12) of vertical geomembrane (601) length direction arrangement, divider is set on dam body
Between trip face and geomembrane (601), SR adhesive tape (12) is set to geomembrane (601) surface, and SR adhesive tape (12) surface covers SR rubber
Glue cover plate (13), SR rubber cover plate (13) are equipped with angle steel (14), and angle steel (14) is sequentially passed through angle steel (14), SR rubber cover plate
(13), bolt (10) attaching nut (15) of SR adhesive tape (12), geomembrane (601) and divider is fixed on dam body upstream face.
6. gravity dam upstream face geomembrane anti-seepage discharge structure according to claim 2, it is characterised in that: the week side anchor
Gu mechanism includes the divider and SR adhesive tape (12) along geomembrane anti-seepage structure (6) edge arrangement, divider is set on dam body
Between trip face and geomembrane (601), SR adhesive tape (12) is set to geomembrane (601) surface, corresponding geomembrane (601) outer edge side
Face is equipped with SR edge sealing bulge (17), and SR adhesive tape (12) surface covers SR rubber cover plate (13), and SR rubber cover plate (13) is equipped with angle
Steel (14), angle steel (14) are sequentially passed through angle steel (14), SR rubber cover plate (13), SR adhesive tape (12), geomembrane (601) and are separated
Bolt (10) attaching nut (15) of item is fixed on upstream face, and the SR rubber cover plate (13) extends outward and covers SR edge sealing
It is closed by HK edge sealing agent and the paste of dam body upstream face in the outside of bulge (17), SR rubber cover plate (13).
7. being existed according to gravity dam upstream face geomembrane anti-seepage discharge structure, feature described in claim 3~6 any one
In: the divider includes being set in turn in upstream face to the SR primer (11) between the geomembrane (601), SR adhesive tape
(12), SR rubber cover plate (13) and SR adhesive tape (12).
8. gravity dam upstream face geomembrane anti-seepage discharge structure according to claim 1, it is characterised in that: the drainpipe
(8) when passing through transverse joint (102) of dam body, the coaxial and hole diameter with drainpipe (8) is set in transverse joint (102) two sides and is greater than drainpipe
(8) the slot hole (101) of caliber, being located at drainpipe (8) section in slot hole (101) is in bending.
9. gravity dam upstream face geomembrane anti-seepage discharge structure according to claim 4, it is characterised in that: corresponding dam body
Attractive joint is arranged in dam body upstream face in transverse joint (102), stitches interior filling high density degree closed pore puffed wheat plate, and corresponding attractive joint is set in upstream face
Vee gutter is set, neoprene stick (19) are set in vee gutter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920081140.4U CN209636736U (en) | 2019-01-17 | 2019-01-17 | Gravity dam upstream face geomembrane anti-seepage discharge structure |
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| CN201920081140.4U CN209636736U (en) | 2019-01-17 | 2019-01-17 | Gravity dam upstream face geomembrane anti-seepage discharge structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555085A (en) * | 2019-01-17 | 2019-04-02 | 中国电建集团华东勘测设计研究院有限公司 | Gravity dam upstream face geomembrane anti-seepage discharge structure and its construction method |
| CN114606903A (en) * | 2022-04-15 | 2022-06-10 | 山东省水利科学研究院 | Seepage-proofing reinforcing method for stone-laying dam |
-
2019
- 2019-01-17 CN CN201920081140.4U patent/CN209636736U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555085A (en) * | 2019-01-17 | 2019-04-02 | 中国电建集团华东勘测设计研究院有限公司 | Gravity dam upstream face geomembrane anti-seepage discharge structure and its construction method |
| CN109555085B (en) * | 2019-01-17 | 2023-12-01 | 中国电建集团华东勘测设计研究院有限公司 | Geomembrane seepage-proofing drainage structure on upstream face of gravity dam and construction method thereof |
| CN114606903A (en) * | 2022-04-15 | 2022-06-10 | 山东省水利科学研究院 | Seepage-proofing reinforcing method for stone-laying dam |
| CN114606903B (en) * | 2022-04-15 | 2024-03-01 | 山东省水利科学研究院 | Seepage-proofing reinforcing method for masonry dam |
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