CN2749933Y

CN2749933Y - Flexible dike dam

Info

Publication number: CN2749933Y
Application number: CN 200420105277
Authority: CN
Inventors: 吕全德
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-26
Filing date: 2004-11-26
Publication date: 2006-01-04
Anticipated expiration: 2014-11-26

Abstract

The utility model relates to the technology of water conservancy, particularly to the construction structure of river dike dams. The utility model uses the technical scheme that the flexible dike dam is formed by piling steel chain gabions, wherein the steel chain gabions are formed by that steel chains are buckled and connected to be knitted into net-shaped chain gabions for loading heavy objects. The utility model has the detailed scheme that the steel chain gabions are formed by that steel chains made from round steel with the diameter of 10 to 20mm is buckled and connected to be knitted into the net-shaped chain gabions with the diameters of 1 to 2 m and the length of 5 to 100 m for loading pebbles. The utility model has the advantages of less investment, short construction period, no damming and cofferdam, simple construction, fast effect and wide application ranges, and is not limited by the geologic structure of riverbeds. The utility model can be used as a common river dike dam for electricity generation and flood control and can be used for the construction of cofferdams in hydropower stations. The utility model is especially suitable for the construction of small hydropower stations.

Description

Flexible dykes and dams

Technical field

The utility model relates to hydrotechnics, particularly the building structure of barrage dykes and dams.

Background technology

Water power is a kind of clean environment firendly, the reproducible energy.The construction in power station be unable to do without constructing of barrage dykes and dams.The barrage dykes and dams of prior art generally are made of steel concrete.This concrete barrage dykes and dams need to concentrate and drop into substantial contribution and manpower and materials, and long in time limit, progress is slow.Build the steel concrete dykes and dams, strict to the riverbed geologic structure, and need construct the cofferdam of damming earlier, the cleaning riverbed, with the concrete dyke building on riverbed past solid rock layer.For having inconvenient traffic, the west area that lacks of capital will be finished such engineering in a short time, and difficulty is too big.

The utility model content

Technical problem to be solved in the utility model is exactly the above-mentioned shortcoming at prior art, and a kind of low-cost dykes and dams of the cofferdam of need not damming are provided.

The utility model solves its technical problem, and the technical scheme of employing is that flexible dykes and dams is characterized in that: described flexible dykes and dams are made of steel chain gabion pile; Described steel chain gabion is buckled binding by steel chain and is made into netted chain cage filling weight and constitutes;

The steel chain that described steel chain gabion is made by φ 10～20mm round steel, the button binding is made into diameter 1～2m, the netted chain cage of long 5～100m, the filling cobble constitutes.

The beneficial effects of the utility model are, invest for a short time, and the duration is short, the cofferdam of need not damming, and easy construction, instant effect, applied widely, not limited by the riverbed geologic structure.Both can be used as common barrage dykes and dams and be used for generating, flood control, also can be as the confferdam and dyke-dam construction in power station.

Description of drawings

Fig. 1 is the structural representation of steel chain gabion;

Fig. 2 is the embodiment schematic diagram;

Fig. 3 is the sectional schematic diagram of the dykes and dams river course vertical direction of steel chain gabion pile;

Fig. 4 is the dykes and dams sectional schematic diagram of road direction along the river of embodiment;

Fig. 5 is that flexible dykes and dams are out of shape firm schematic diagram.

The specific embodiment

Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.

The utility model is constructed dykes and dams with the steel chain gabion, dykes and dams that harden and close with boiling water particularly, and the steadiness durability is all very high, is used for the construction in power station, carries out follow-up engineering construction while can generate electricity.Alleviate the pressure of fund input, can also save operation.

Embodiment

The flexible dykes and dams of this example make steel chain all linked with one another by φ 10～20mm round steel.The crisscross button of steel chain is unified into diameter 1～2m, the netted chain cage 11 of long 5～100m, chain cage 11 mesh should be less than the minimum diameter of interior dress cobble 12.Behind the filling cobble, seal with steel chain at chain cage 11 two ends.The steel chain infall all adopts cuff link to connect steel chain gabion structure schematic diagram such as Fig. 1.

After the steel chain gabion is carried out, the riverbed is dealt with slightly, protrude the above rock of riverbed 30cm and answer explosion to remove, in order to avoid damage steel chain gabion.Pull lifting steel chain gabion with steel, pile up and neatly make its soft landing on riverbed silt aspect.The steel chain gabion should be piled up along the river course, and first floor steel chain gabion cobble does not load too full, and second layer steel chain gabion is piled up the place, slit at first floor steel chain gabion, and so alternate tiers row pattern is to design height.Pile up dykes and dams slit minimum like this, under action of gravity, dykes and dams are 50 extruding toward the riverbank, both sides, tightly connect together with riverbank 50.The section of flexible dykes and dams 1 river course vertical direction, as shown in Figure 3.Top one deck of flexible dykes and dams 1 should shorten 50～100cm than following one deck, make flexible dykes and dams 1 along the river the road direction section in echelon, as shown in Figure 4.In case of necessity, between the steel chain gabion 11, and between layer and the layer, can link with steel chain.Flexible dykes and dams 1 width is according to the water storage degree of depth and the decision of dykes and dams weight.Flexible dykes and dams 1 should use sand ribbon, branch, grass, silt to carry out leak stopping after constructing and finishing, and add rubber sheet in case of necessity.Flood discharge dam 3 is constructed at flexible dykes and dams 1 top, and flood discharge dam 3 can constitute with steel plate or concrete prefabricated board, and 3 tops, flood discharge dam exceed the water surface, on the flood discharge dam floodwater releasing port 30 should be set.In 3 bottoms, flood discharge dam boiling water plate 2 is installed, boiling water plate 2 is installed in 3 downstreams, flood discharge dam.Boiling water plate 2 should be lower than minimum floodwater releasing port 30, and width should be more than or equal to the width of flexible dykes and dams 1, and the flood that floodwater releasing port 30 is released flows away from boiling water plate 2, can not be washed into flexible dykes and dams 1.Boiling water plate 2 also is to make with steel plate or concrete prefabricated board.Boiling water plate 2 can adopt steel column or concrete column piece support fixation, and it is fixing also can to adopt wirerope to hang.The schematic diagram of whole dykes and dams is seen Fig. 2.

The firm principle of flexible dykes and dams 1 is described below in conjunction with Fig. 5:

After dykes and dams are built and are finished, approximately through 1～2 flood season, flood is by the floodwater releasing port on the flood discharge dam 3 30, flow out from boiling water plate 2, the riverbed is washed away, because the effect of the impact force of water and turbulent flow, the riverbed silt 40 of A part is taken away by flood erosion among the figure, exposes the solid rock layer of riverbed past.Because flexible dykes and dams are to be made of the steel chain gabion that certain flexibility is arranged, flexible dykes and dams footing is flushed away along with silt and is out of shape, contact with riverbed past solid rock layer at last, stop distortion, form the inclined-plane shown in the A among Fig. 5, promptly so-called counter dam pawl is tightly protected the silt below the flexible dykes and dams, and can not taken away by flood erosion again, guaranteed the firm of flexible dykes and dams.In order to make full use of the souring of current, design falls in the ratio of boiling water plate should make water flow velocity surpass 2m/s, and head is approximately higher than counter dam pawl 2m.The length of counter dam pawl should be according to silt 40 thickness decisions, and design principles is that the counter dam pawl after making distortion stable and the angle of riverbed past are about 10 °, if a steel chain gabion length is not enough, the steel chain gabion can be linked, and reaches design length.

To the dry season, can be on the riverbed past of being cleaned out by flood erosion, close counter dam pawl place, dam, concreting basis.Like this, can reach 15～20 years the service life of flexible dykes and dams.During this period, the profit of both can having generated electricity, raise fund, also can be under the situation of fully funded, build permanent dykes and dams on the concrete foundation dam, at this moment flexible dykes and dams just can be brought into play the function of confferdam and dyke-dam, and have saved the engineering of riverbed cleaning, after flexible dykes and dams are removed, can also be used for other construction of hydropower stations.

Claims

1. flexible dykes and dams is characterized in that: described flexible dykes and dams are made of steel chain gabion pile; Described steel chain gabion is buckled binding by steel chain and is made into netted chain cage filling weight and constitutes.

2. flexible dykes and dams according to claim 1 is characterized in that: described weight is stone and/or concrete block

3. flexible dykes and dams according to claim 1 is characterized in that: described flexible dykes and dams by the steel chain gabion along the river the parallel staggered pile in road constitute.

4. flexible dykes and dams according to claim 1 is characterized in that: described steel chain gabion pile becomes up-small and down-big trapezoidal.

5. flexible dykes and dams according to claim 1 is characterized in that: the steel chain that described steel chain gabion is made by φ 10～20mm round steel, and the button binding is made into diameter 1～2m, the netted chain cage of long 5～100m, the filling cobble constitutes.

6. according to claim 1,2,3,4 or 5 described flexible dykes and dams, it is characterized in that: building has the flood discharge dam on the described flexible dykes and dams; Bottom, described flood discharge dam is connected with flexible dykes and dams, and the top exceeds the water surface; Described flood discharge dam is provided with floodwater releasing port.

7. flexible dykes and dams according to claim 6 is characterized in that: described flood discharge dam is made of steel plate or concrete prefabricated board.

8. flexible dykes and dams according to claim 6 is characterized in that: bottom, described flood discharge dam is equipped with the boiling water plate; Described boiling water plate is installed in downstream, flood discharge dam; Described boiling water plate one end and flood discharge dam bottom connection, and be lower than minimum floodwater releasing port; Described boiling water plate one end stretches out flexible dykes and dams.

9. flexible dykes and dams according to claim 8 is characterized in that: described boiling water plate is made of steel plate or concrete prefabricated board.