CN102912762A - Dam with pile groups and permeable frame and construction method of dam - Google Patents
Dam with pile groups and permeable frame and construction method of dam Download PDFInfo
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- CN102912762A CN102912762A CN2012104239366A CN201210423936A CN102912762A CN 102912762 A CN102912762 A CN 102912762A CN 2012104239366 A CN2012104239366 A CN 2012104239366A CN 201210423936 A CN201210423936 A CN 201210423936A CN 102912762 A CN102912762 A CN 102912762A
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Abstract
The invention discloses a dam with pile groups and a permeable frame and a construction method of the dam. The construction method includes: piling vertical dam piles in a to-be-constructed river, arranging a mesh between each two adjacent vertical dam piles so that the vertical dam piles and the meshes form a closed block, casting the permeable frame in the mashes to form a permeable frame unit, and casting other permeable frames into the meshes so that the permeable frame units form the dam with the pile groups and the permeable frames. The dam has the advantages of stability in structure, long engineering life cycle, eco-environment protection, convenience in construction and the like.
Description
Technical field
The present invention relates to the waterway regulation technical field, refer to particularly a kind ofly become silted up and pile group water-permeable frame dam and the job practices thereof of ecological engineering for the building a dam of waterway regulation works, Cha Dao are short.
Background technology
Since middle nineteen nineties in last century, along with pulling open of Changjiang River Trunk Line (particularly middle and lower reaches) waterway regulation works curtain, Yangtze River waterway has entered fast-developing period, Channel Condition and the volume of goods transported increase greatly, according to statistics, since two thousand five, occupied first of the inland river, the world in continuous 7 years.
At present, middle and lower reach of Yangtze River river training works adopts solid groin to come clearing sands with converging flow more, thereby reaches the purpose in regulation shoal.Although solid groin has been obtained preferably engineering effort, has the following disadvantages: 1. consume the constructional materialss such as stone material, timber more, engineering quantity is larger; 2. current chance solid groin is obstructed, and the energy major part concentrates on the dam body, and flowing state transition becomes circulation, backflow etc., the riverbed current are formed larger constraint, cause that the abutment flow rate of water flow increases unusually, the dam foundation difficulty of taking root needs rescuing and protecting and just can stablize for many years; 3. solid groin has occupied the place in river, has limited the river course and has crossed big vast ability, has destroyed the water sapin weighing apparatus of swale, makes the burden in riverbed; 4. entity non-submersion groynes is met great flood, in case heavy losses can be caused in casual top, therefore is subjected to the restriction of flood control standard larger; 5. mulch, river bottom protection and bank protection sometimes will be with a large amount of mattress sinking, and be serious to the river bed ecological disruption.
All using in each large watershed river regulation of the whole nation and main navigation channel and estuarine regulation project has permeable spur, and especially the reinforced concrete pile dam is most widely used.Pervious dike is with techniques such as boring, vibration, hydraulic flushing in hole the depths, riverbed to be inserted in prefabricated or fluid concrete stake, and arranges at regular intervals the formation permeable spur.It is led the effect of river gesture except having certain Flow Control of choosing, and can also play and slow down the dam flow rate of water flow, makes silt sedimentation behind the dam, can take full advantage of the characteristics of flood silt beach brush groove, on purpose falls to becoming silted up and makes the beach.Simultaneously; it also has the advantages such as simple in structure, that the mechanization of building operation degree is high, application safety reliable, can adapt to various standard of flood, protection is ecological, damages is low; but as the Changjiang river first of China's inland river volume of goods transported because flow condition is comparatively complicated; the water yield is larger, and pervious dike is not suitable for using in the waterway regulation works of Changjiang River Trunk Line.
Summary of the invention
Purpose of the present invention is exactly the deficiency that will solve the above-mentioned background technology, and a kind of pile group water-permeable frame dam and job practices thereof are provided, and can be applied in that the water yield is large, flow condition is complicated and the improvement engineering in the demanding river course that controls flood.
Technical scheme of the present invention is:
A kind of pile group water-permeable frame dam, it comprises water-permeable frame, it is characterized in that: set a plurality of vertical dam stakes in the construction river, be provided with grid between the adjacent vertical dam stake, described vertical dam stake and grid consist of the closed interval, and described water-permeable frame is positioned in the grid.
Be provided with transverse beam between the described vertical dam stake, transverse beam can be in order to guarantee the steadiness between the stake of vertical dam.
Described vertical dam stake outer wall is provided with stopping means, and described stopping means is arranged on the downstream in construction river, and described stopping means is water-permeable frame, and the effect of stopping means is: when the river current are larger, played a supporting role in whole pile group water-permeable frame dam.
A kind of job practices based on pile group water-permeable frame dam described above is characterized in that: comprise following steps:
1), in pre-construction river, sets the stake of vertical dam;
2), be provided with grid, vertical dam stake and grid formation closed interval between the adjacent vertical dam stake;
3), select suitable water-permeable frame, water-permeable frame is jettisoninged in the grid, form the unit water-permeable frame;
4), repeat construction sequence 3, jettisoning other water-permeable frame to grid, make the unit water-permeable frame form pile group water-permeable frame dam.
According to the size of river current, the reverse direction in the river is along the vertical dam stake outer wall water-permeable frame of jettisoninging.
The present invention is as a kind of novel waterway regulation technology, its silt effect that falls of slowing down is fairly obvious, by starving frame shell at the peripheral grid that arranges of water-permeable frame with by vertical dam stake intestines and stomach, make it be difficult for sinking, float or move, its structure is more stable, the engineering life-span is longer, and has the characteristics of ecological, environmental protective; Simple structure among the present invention, its each part can be in factory in batches property production, and construction is simple, cost is low, is a kind of novel waterway regulation technology that is worth promoting.
Description of drawings
Fig. 1 is unit water-permeable frame dam structural representation among the present invention;
Fig. 2 is grid plan schematic diagram among the present invention;
Fig. 3 is four limit water-permeable frame structural representations one among the present invention;
Fig. 4 is four limit water-permeable frame structural representations two among the present invention.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments, be convenient to be well understood to the present invention, but they do not consist of restriction to the present invention.
A kind of pile group water-permeable frame dam as shown in Figure 1, it comprises vertical dam stake 1, grid 2, water-permeable frame 3, vertical dam stake 1 sets in advance in the construction river, between vertical dam stake 1, be provided with for the transverse beam that guarantees the stability between the vertical dam stake 1 (figure does not mark), be provided with the structural representation of grid 2(grid 2 between the adjacent vertical dam stake as shown in Figure 2), vertical dam stake 1 and grid 2 consist of the closed interval, water-permeable frame 3 is positioned in the grid 2, the outer wall of vertical dam stake 1 is provided with the stopping means 4 that is made of water-permeable frame, stopping means 4 is arranged on the downstream in construction river: when when flow rate of water flow is constructed larger flood period, stopping means 4 can be played a supporting role to whole pile group water-permeable frame dam; When flow rate of water flow is constructed less dry season, stopping means 4 can arrange, this is because when dry season, flow rate of water flow is less, do not need 4 pairs of pile group water-permeable frames of stopping means dam to support, dry season to flood period during this period of time in, water-permeable frame 3 will be brought into play the short effect of becoming silted up of erosion control, produce in the wings alluvial, interim when flood period, the mud that produces around the water-permeable frame 3 has played the support limit effect to pile group water-permeable frame dam, therefore when current are constructed less dry season, stopping means 4 can be set; In addition, when height of dam itself is lower, do not need to arrange stopping means 4 yet.
The present invention comprises vertical dam stake 1, grid 2,3 three monomers of water-permeable frame, wherein water-permeable frame 3 is essence and the main bodys on pile group water-permeable frame dam, dam stake 1 and grid 3 all are used for fixing water-permeable frame 3, make it form a whole dam body shape, be specially: every several vertical dam stakes 1 wherein can surround a zone, shown in the zone its inner space need guarantee to be inserted in water-permeable frame 3, water-permeable frame 3 is arranged in the zone, between zone that vertical dam stake 1 surrounds and water-permeable frame 3, be provided with grid 2, vertical dam stake 1 mainly is the position that is used for fixing water-permeable frame 3, grid 2 mainly is to determine its size according to the size of water-permeable frame 3, is used for preventing that water-permeable frame 3 from spilling the interior zone of grid 2 under the impact of current.
The form of structure of vertical dam stake 1 is chosen as PHC stake or bored pile, the form of structure of vertical dam stake 1 is the PHC stake in the present embodiment, the pile strength of PHC stake is high, and bearing capacity is high, can resist larger cracking resistance moment of flexure, has stronger service behaviour, pile body can remain intact under tight bad construction environment, greatly reduces and splits stake, the generation of fracture accident, and can be by specialized factory's automated production in enormous quantities, pile quality is reliable and stable; When static pressure was constructed, the job site was succinct, and pollution-free, noiselessness can ensure civilized construction; Because the bearing capacity of single pile of PHC stake is relatively high, amount of concrete that its ring section is consumed is less, thereby unit bearing capacity cost is economized most.
In the present embodiment, described grid 2 is permeable steel grating.
The structural shape of water-permeable frame 3 is four limit water-permeable frames, Triangular Taper Penetrating water-permeable frame or other non-enclosed water-permeable frame, water-permeable frame 3 is chosen as four limit water-permeable frames in the present embodiment, as shown in Figure 3, Figure 4, four limit water-permeable frames are open permeable members that the middle part has individual layer four directions mount structure.Four parallel rod members 3.1 are not in same plane; Four parallel rod members 3.1 consist of the top bar of square frame; Connected by connecting rod 3.2 between the middle part of adjacent top bar, four connecting rods 3.2 are in same plane, and four connecting rods 3.2 can arrange multilayer, consist of four limit water-permeable frames between four connecting rods 3.2 and the four roots and tops bars.After deliberation, water-permeable frame energy dissipating deceleration, the short effect of becoming silted up of erosion control mainly are that this void content with water-permeable frame is relevant because it has suitable water permeability.The quadrangle water-permeable frame is non-enclosed framework, its space is larger, when piling up, link each other effect strong, pile up effect and stability better, also can widen the scope of application of framework, because linking property is better between framework, can be adapted to better riverbed steeper, with a varied topography or bank slope, can be used for building permeable dike, can be used for supporting beach engineering etc.Four limit water-permeable frames can be prefabricated in the factory, and produce in enormous quantities, can improve efficiency of construction.
A kind of job practices based on pile group water-permeable frame dam described above comprises following steps:
1), determine the void content of permeable dike according to flow rate of water flow and silt grating, determine water-permeable frame 3 structural shapes and size; The geological conditions in surveying engineering zone is determined then to carry out structural shape, the degree of depth and the caliber of vertical dam stake 1 pile group water-permeable frame dam and further design, and selects the suitable grid of size;
2), be provided with grid 2, vertical dam stake 1 and grid 2 formation closed intervals between the adjacent vertical dam stake 1;
3), water-permeable frame 3 is jettisoninged in the grid, form the unit water-permeable frame;
4), repeat construction sequence 3, jettisoning other water-permeable frame 3 to grid 2, make the unit water-permeable frame form pile group water-permeable frame dam.
When in the akhet, when the river was larger, the reverse direction in the river was along the vertical dam stake outer wall water-permeable frame 3 of jettisoninging.
In the present embodiment, vertical dam stake 1 can be selected different structural shapes according to requirement of engineering, regulates pipe diameter size, spacing and the degree of depth etc.; Grid 2 can be selected different structural shapes according to requirement of engineering, adjustment aperture and single width; Water-permeable frame 3 also can according to the needs of permeable porosity in the engineering design, be selected different structural shapes and size.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (8)
1. pile group water-permeable frame dam, it comprises water-permeable frame, it is characterized in that: set a plurality of vertical dam stakes in the construction river, be provided with grid between the adjacent vertical dam stake, described vertical dam stake and grid consist of the closed interval, and described water-permeable frame is positioned in the grid.
2. pile group water-permeable frame according to claim 1 dam is characterized in that: be provided with transverse beam between the described vertical dam stake.
3. pile group water-permeable frame according to claim 1 dam, it is characterized in that: described vertical dam stake outer wall is provided with stopping means, and described stopping means is arranged on the downstream in construction river, and described stopping means is water-permeable frame.
4. pile group water-permeable frame according to claim 1 dam, it is characterized in that: the form of structure of described vertical dam stake is PHC stake or bored pile.
5. pile group water-permeable frame according to claim 1 dam, it is characterized in that: described grid is permeable steel grating.
6. pile group water-permeable frame according to claim 1 dam, it is characterized in that: the structural shape of described water-permeable frame is four limit water-permeable frames, Triangular Taper Penetrating water-permeable frame or non-enclosed water-permeable frame.
7. job practices based on pile group water-permeable frame dam described above is characterized in that: comprise following steps:
1), in pre-construction river, sets the stake of vertical dam;
2), be provided with grid, vertical dam stake and grid formation closed interval between the adjacent vertical dam stake;
3), select suitable water-permeable frame, water-permeable frame is jettisoninged in the grid, form the unit water-permeable frame;
4), repeat construction sequence 3, jettisoning other water-permeable frame to grid, make the unit water-permeable frame form pile group water-permeable frame dam.
8. the job practices on pile group water-permeable frame according to claim 7 dam is characterized in that: the reverse direction in the river, and along the vertical dam stake outer wall water-permeable frame of jettisoninging.
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| CN201210423936.6A CN102912762B (en) | 2012-10-29 | 2012-10-29 | Dam with pile groups and permeable frame and construction method of dam |
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| CN201210423936.6A CN102912762B (en) | 2012-10-29 | 2012-10-29 | Dam with pile groups and permeable frame and construction method of dam |
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| CN102912762B CN102912762B (en) | 2015-07-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526722A (en) * | 2013-10-16 | 2014-01-22 | 中国科学院、水利部成都山地灾害与环境研究所 | Debris flow gabion prevention and control structural body and design method thereof |
| CN103526721A (en) * | 2013-10-29 | 2014-01-22 | 中国水电顾问集团成都勘测设计研究院有限公司 | Permeable spur dike with pile foundations |
| CN105220649A (en) * | 2015-09-09 | 2016-01-06 | 孟庆业 | T-shaped perfusion dam |
| CN111809562A (en) * | 2020-06-18 | 2020-10-23 | 上海河道建设有限公司 | Prevention of seepage hydraulic engineering dykes and dams |
| CN115467290A (en) * | 2022-10-25 | 2022-12-13 | 成都市市政工程设计研究院有限公司 | Ecological bed fixing piece, testing device and testing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526722A (en) * | 2013-10-16 | 2014-01-22 | 中国科学院、水利部成都山地灾害与环境研究所 | Debris flow gabion prevention and control structural body and design method thereof |
| CN103526722B (en) * | 2013-10-16 | 2015-09-09 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of mud-rock flow gabion control structure body and method for designing thereof |
| CN103526721A (en) * | 2013-10-29 | 2014-01-22 | 中国水电顾问集团成都勘测设计研究院有限公司 | Permeable spur dike with pile foundations |
| CN103526721B (en) * | 2013-10-29 | 2016-01-20 | 中国电建集团成都勘测设计研究院有限公司 | A kind of permeable pile foundation groynes |
| CN105220649A (en) * | 2015-09-09 | 2016-01-06 | 孟庆业 | T-shaped perfusion dam |
| CN111809562A (en) * | 2020-06-18 | 2020-10-23 | 上海河道建设有限公司 | Prevention of seepage hydraulic engineering dykes and dams |
| CN115467290A (en) * | 2022-10-25 | 2022-12-13 | 成都市市政工程设计研究院有限公司 | Ecological bed fixing piece, testing device and testing method thereof |
| CN115467290B (en) * | 2022-10-25 | 2023-09-01 | 成都市市政工程设计研究院有限公司 | Test method of ecological solid bed part test device |
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