CN208346835U - Environmental type earth-rock cofferdam structure - Google Patents
Environmental type earth-rock cofferdam structure Download PDFInfo
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- CN208346835U CN208346835U CN201820869054.5U CN201820869054U CN208346835U CN 208346835 U CN208346835 U CN 208346835U CN 201820869054 U CN201820869054 U CN 201820869054U CN 208346835 U CN208346835 U CN 208346835U
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Abstract
A kind of environmental type earth-rock cofferdam structure, including clashing dike, dike is connect by weir body transition zone with underwater cofferdam body side in an opposite direction, cofferdam main body waterborne has been filled in underwater cofferdam main body, underwater cofferdam main body and cofferdam main body waterborne are the main body filled using excavated material, the inside of underwater cofferdam main body is equipped with plastic concrete cut-off wall, and the underwater cofferdam main body other side is provided with underwater filling sandbag revetment；Cofferdam main body waterborne is covered with geomembrane enveloped concrete layer close to the side of dike in an opposite direction, the cofferdam main body waterborne other side is provided with filling sandbag revetment waterborne, it is covered with geotextiles on filling sandbag revetment waterborne, is provided with the composite geo-membrane connecting with plastic concrete cut-off wall in cofferdam main body waterborne.One kind provided by the utility model catches environmental type earth-rock cofferdam structure, can solve the problem that materials demand is big, cost is high, gathers materials on the spot, is environmentally protective, and impact resistance is good, construction intensity is small, the construction period is short, stability is good.
Description
Technical field
The utility model relates to hydraulic engineering technical field, especially a kind of environmental type earth-rock cofferdam structure.
Background technique
Cofferdam refers in hydraulic engineering construction, to build permanent water conservancy projects, the provisional building enclosure built；It is made
With being to prevent water and soil from building position into building, so that in cofferdam internal drainage, excavation pit builds building.Mainly
For in waterwork, in addition to a part as formal building, other parts usually to be removed after being finished.
Traditional earth rock cofferdam generally uses reinforced gabion and Reynolds slope protection, and this slope protection form takes up a large area, material
Demand is big, and it is long in time limit, project cost is high, the earth rock cofferdam applicability short for the construction period, material supply is difficult is low.
Summary of the invention
The technical problem to be solved by the utility model is to provide one kind to catch environmental type earth-rock cofferdam structure, can solve
The certainly problem that materials demand is big, cost is high gathers materials on the spot, is environmentally protective, impact resistance is good, construction intensity is small, the construction period is short,
Stability is good.
In order to solve the above technical problems, the technical scheme adopted by the utility model is:, and a kind of environmental type soil stone encloses
Weir structure, including dike is clashed, dike is connect by weir body transition zone with underwater cofferdam body side in an opposite direction, has been filled in underwater cofferdam main body
Cofferdam main body waterborne, underwater cofferdam main body and cofferdam main body waterborne are the main body filled using excavated material, underwater cofferdam main body
Inside is equipped with plastic concrete cut-off wall, and the underwater cofferdam main body other side is provided with underwater filling sandbag revetment；Cofferdam master waterborne
Body is covered with geomembrane enveloped concrete layer close to the side of dike in an opposite direction, and the cofferdam main body waterborne other side is provided with filling sandbag revetment waterborne,
It is covered with geotextiles on filling sandbag revetment waterborne, answering of connecting with plastic concrete cut-off wall is provided in cofferdam main body waterborne
Close geomembrane.
Preferably, the side that dike is not connect with underwater cofferdam main body in an opposite direction is provided with erosion control rockfill.
Preferably, erosion control rockfill is " reverse L type " or quadrangle.
Preferably, erosion control rockfill bottom is equipped with Polypropylene.
Preferably, composite geo-membrane passes through the guiding wall being arranged at the top of plastic concrete cut-off wall and plastic concrete is anti-
Seep wall connection.
Preferably, cofferdam body top waterborne is provided with road, and road successively has road geotextiles, cobble pad from the bottom to top
Layer and grinding coagulation soil layer composition.
Environmental type earth-rock cofferdam structure provided by the utility model, weir body mainly use excavated material to backfill, fill
Divide and local raw material are utilized, it is environmentally protective.Geomembrane enveloped concrete, the sand filling bag protective slope structure of use, substantially reduce tradition
Reinforced gabion and Reynolds slope protection to the dependence of material, improve applicability；Difficulty of construction is reduced, construction work is shortened
Phase；The erosion resistibility for improving cofferdam side slope reduces the occupied area in cofferdam.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram of the utility model of upstream and downstream river-bed section, and erosion control rockfill is " reverse L type "；
Fig. 2 is the structural schematic diagram of the utility model that upstream and downstream wraps up in head, and erosion control rockfill is the erosion control rockfill completely spread,
As quadrangle；
The structural schematic diagram that Fig. 3 is the utility model when being longitudinal cofferdam, erosion control rockfill is the erosion control rockfill completely spread,
As quadrangle；
Fig. 4 is the scheme of installation of composite geo-membrane in the utility model embodiment.
Specific embodiment
As shown in Figure 1-Figure 3, a kind of environmental type earth-rock cofferdam structure, including dike 5 is clashed, dike 5 passes through the transition of weir body in an opposite direction
Layer 6 is connect with 8 side of underwater cofferdam main body, and cofferdam main body 9 waterborne, 8 He of underwater cofferdam main body have been filled in underwater cofferdam main body 8
Cofferdam main body 9 waterborne is the main body filled using excavated material, and the inside of underwater cofferdam main body 8 is equipped with plastic concrete cut-off wall
15,8 other side of underwater cofferdam main body is provided with underwater filling sandbag revetment 18；Cofferdam main body 9 waterborne is covered close to the side of dike 5 in an opposite direction
It is stamped geomembrane enveloped concrete layer 7, main body 9 other side in cofferdam waterborne is provided with filling sandbag revetment 16 waterborne, filling sand pocket shield waterborne
It is covered with geotextiles 17 on slope 16, is provided with the composite earthwork connecting with plastic concrete cut-off wall 15 in cofferdam main body 9 waterborne
Film 13.
The side that dike 5 is not connect with underwater cofferdam main body 8 in an opposite direction is provided with erosion control rockfill 4.
Erosion control rockfill 4 is " reverse L type " or quadrangle.
The structure of the utility model of upstream and downstream river-bed section is as shown in Figure 1, upstream and downstream river-bed section is mainly used to water blocking, confrontation
Wash away, impact require it is low, therefore erosion control rockfill 4 use " reverse L type "；
Upstream and downstream wraps up in the structure of the utility model of head as shown in Fig. 2, upstream and downstream wraps up in contraction of the head due to river, and water flow exists
This convergence, it is desirable that structure has very high impact resistance, therefore erosion control rockfill 4 is using the quadrangular forms completely spread, size
It is big when than Fig. 3 using longitudinal cofferdam；
Structure when the utility model is longitudinal cofferdam is as shown in figure 3, contraction of the longitudinal cofferdam due to river, water flow rapids
It is anxious, it is more demanding to the scour resistance of structure, therefore erosion control rockfill 4 is using the quadrangular forms completely spread.
4 bottom of erosion control rockfill is equipped with Polypropylene 3.
Composite geo-membrane 13 passes through the guiding wall 14 that 15 top of plastic concrete cut-off wall is arranged in and plastic concrete is anti-
Wall 15 is seeped to connect.
Road is provided at the top of cofferdam main body 9 waterborne, road successively has road geotextiles 10, cobble bed course 11 from the bottom to top
And grinding coagulation soil layer 12 forms.
The utility model is located on sandy gravel coating 1 and Extra-fine sand coating 2, underwater cofferdam main body 8 and waterborne is enclosed
The main material that weir main body 9 is filled is exactly the Extra-fine sand excavated.
The construction method of the utility model is as follows:
Dike 5 shuts off → weir body transition zone 6 in an opposite direction, i.e., sand gravel mixture transition zone fill → underwater cofferdam main body 8 fills →
The construction of plastic concrete cut-off wall 15 → cofferdam main body 9 waterborne is filled and 13 constructions of composite geo-membrane → slope protection construction.
The dike 5 in an opposite direction shuts off, and upstream and downstream river-bed section of first being constructed using the method for attacking and occupying, longitudinal cofferdam section block stone clash dike, to block stone
Sandy gravel clashes dike follow-up construction after dike fills traveling certain distance in an opposite direction.
The weir body transition zone 6 and underwater cofferdam main body 8 are filled, and are filled using the method for attacking and occupying, dump truck transport, bull-dozer
It is smooth, when per filling extension certain distance forward, top is carried out with vibrating roller and is rolled.
The plastic concrete cut-off wall 15 is constructed, mainly for the antiseepage of underwater cofferdam main body 8, first cofferdam master under water
Construction guidance wall 14 uses hydraulic grab grooving casting concrete again on 8 platform of body, and plastic concrete cut-off wall 15 gos deep into basement rock
1m pays attention to operating platform to be stopped, and the platform after backfill must be solid, flat, must not generate excessive or differential settlement.
The cofferdam main body 9 waterborne is filled and composite geo-membrane 13 is constructed, and cofferdam main body 9 waterborne is applied using placement in layers
Work, lift height are no more than 0.5m, are compacted as required；Cooperate composite geo-membrane 13 to construct simultaneously, reaches cofferdam main body 9 waterborne
Antiseepage requirement, the depth that composite geo-membrane 13 is deeply oriented to wall 14 is 0.5m, plasticity antiseepage coping is connected to, with cut-pff wall
It is combined together, then pours fill concrete closure, installation detail drawing is as shown in Figure 4.
The slope protection construction, slope protection on the outside of first construction cofferdam, then inside slope protection is carried out, finally complete titration road construction；
Outside slope protection is the construction of 4 slope protection river bottom protection of erosion control rockfill, and bottom is laid with 200g/m2Polypropylene 3, it is in easy flights in 1:1.5, directly
To the cope level of dike in an opposite direction, then the geomembrane enveloped concrete of making 20cm forms geomembrane enveloped concrete layer 7, in easy flights in 1:3；Inside
Slope protection is underwater filling sandbag revetment 18, is constructed upwards by bottom, in the underwater filling sandbag revetment 18 of underwater cofferdam main body 8,
Sand pocket is laid with two rows of in easy flights in 1:3, the filling sandbag revetment 16 waterborne of cofferdam main body 9 waterborne, one row slope of sand pocket laying
Degree is not more than 1:2, fissure of displacement overlap joint；Levee crown road construction is laid with one layer of geotextiles 10 first, repaves and build 30cm cobble bed course 11,
Last making 20cm grinding coagulation soil forms grinding coagulation soil layer 12.
The above embodiments are only the optimal technical scheme of the utility model, and are not construed as the limit for the utility model
System, the features in the embodiments and the embodiments of the present application in the absence of conflict, can mutual any combination.This is practical new
The protection scope of type should be with the technical solution of claim record, technical characteristic in the technical solution recorded including claim
Equivalents are protection scope.Equivalent replacement i.e. within this range is improved, also the protection scope of the utility model it
It is interior.
Claims (6)
1. a kind of environmental type earth-rock cofferdam structure, including clash dike (5), it is characterised in that: dike (5) pass through weir body transition zone in an opposite direction
(6) it is connect with underwater cofferdam main body (8) side, cofferdam main body (9) waterborne, underwater cofferdam has been filled in underwater cofferdam main body (8)
Main body (8) and cofferdam main body waterborne (9) are the main body filled using excavated material, and the inside of underwater cofferdam main body (8) is equipped with plasticity
Concrete cut (15), underwater cofferdam main body (8) other side are provided with underwater filling sandbag revetment (18)；Cofferdam main body waterborne
(9) side close to dike (5) in an opposite direction is covered with geomembrane enveloped concrete layer (7), and cofferdam main body (9) other side waterborne is provided with filling waterborne
Sandbag revetment (16) is covered with geotextiles (17) on filling sandbag revetment (16) waterborne, be provided in cofferdam main body (9) waterborne with
The composite geo-membrane (13) of plastic concrete cut-off wall (15) connection.
2. environmental type earth-rock cofferdam structure according to claim 1, it is characterised in that: in an opposite direction dike (5) not with enclose under water
The side of weir main body (8) connection is provided with erosion control rockfill (4).
3. environmental type earth-rock cofferdam structure according to claim 2, it is characterised in that: erosion control rockfill (4) is " anti-
L-type " or quadrangle.
4. environmental type earth-rock cofferdam structure according to claim 2, it is characterised in that: erosion control rockfill (4) bottom
It is equipped with Polypropylene (3).
5. environmental type earth-rock cofferdam structure according to claim 1, it is characterised in that: composite geo-membrane (13) passes through
The guiding wall (14) being arranged at the top of plastic concrete cut-off wall (15) is connect with plastic concrete cut-off wall (15).
6. environmental type earth-rock cofferdam structure according to claim 1, it is characterised in that: cofferdam main body (9) top waterborne
Portion is provided with road, and road successively has road geotextiles (10), cobble bed course (11) and grinding coagulation soil layer from the bottom to top
(12) it forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820869054.5U CN208346835U (en) | 2018-06-06 | 2018-06-06 | Environmental type earth-rock cofferdam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820869054.5U CN208346835U (en) | 2018-06-06 | 2018-06-06 | Environmental type earth-rock cofferdam structure |
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| Publication Number | Publication Date |
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| CN208346835U true CN208346835U (en) | 2019-01-08 |
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ID=64890652
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| CN201820869054.5U Active CN208346835U (en) | 2018-06-06 | 2018-06-06 | Environmental type earth-rock cofferdam structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629585A (en) * | 2019-01-25 | 2019-04-16 | 三峡大学 | Novel cofferdam structure and construction method under soft overburden |
| CN110761307A (en) * | 2019-10-12 | 2020-02-07 | 中国水利电力对外有限公司 | Earth-rock cofferdam water seepage treatment structure and construction method |
| CN111197300A (en) * | 2020-01-09 | 2020-05-26 | 中电建十一局工程有限公司 | Earth-rock cofferdam back slope type seepage-proofing dam and reverse construction method |
| CN115450236A (en) * | 2022-09-15 | 2022-12-09 | 中国葛洲坝集团国际工程有限公司 | Cofferdam anti-seepage structure and construction method thereof |
-
2018
- 2018-06-06 CN CN201820869054.5U patent/CN208346835U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629585A (en) * | 2019-01-25 | 2019-04-16 | 三峡大学 | Novel cofferdam structure and construction method under soft overburden |
| CN109629585B (en) * | 2019-01-25 | 2024-03-12 | 三峡大学 | Novel cofferdam structure under weak covering layer and construction method |
| CN110761307A (en) * | 2019-10-12 | 2020-02-07 | 中国水利电力对外有限公司 | Earth-rock cofferdam water seepage treatment structure and construction method |
| CN111197300A (en) * | 2020-01-09 | 2020-05-26 | 中电建十一局工程有限公司 | Earth-rock cofferdam back slope type seepage-proofing dam and reverse construction method |
| CN111197300B (en) * | 2020-01-09 | 2022-02-18 | 中电建十一局工程有限公司 | Earth-rock cofferdam back slope type seepage-proofing dam and reverse construction method |
| CN115450236A (en) * | 2022-09-15 | 2022-12-09 | 中国葛洲坝集团国际工程有限公司 | Cofferdam anti-seepage structure and construction method thereof |
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