CN216515381U

CN216515381U - Overflow dam

Info

Publication number: CN216515381U
Application number: CN202123432745.XU
Authority: CN
Inventors: 陈楠
Original assignee: Jinan Dongyuan Cement Products Co ltd
Current assignee: Shandong Dongyuan Building Energy Conservation Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-13
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses an overflow dam, and relates to the technical field of hydraulic engineering. The overflow dam comprises a plurality of overflow dam monomers and a connecting unit for connecting the overflow dam monomers to form a whole, wherein each overflow dam monomer comprises a base plate in a fan-shaped structure, at least two pier bodies arranged along the radial direction are arranged on the base plate, a vertical wall is arranged between every two adjacent pier bodies, and the pier bodies and the vertical wall jointly form a continuous main wall body. The front side of the vertical wall is provided with a first arch wall, the height of the first arch wall is lower than that of the vertical wall, and the first arch wall and the main wall jointly form a first drop basin. The overflow dam single bodies are arranged in an arc shape and form an arc-shaped structure which is sunken towards the upstream side. The overflow dam monomers of the overflow dam are arranged in an arc shape, so that the reliability of the whole overflow dam can be effectively guaranteed, and the danger of rushing is reduced.

Description

Overflow dam

Technical Field

The utility model relates to the technical field of hydraulic engineering, in particular to a dam.

Background

As a hydraulic engineering, the flood dam is widely applied to agricultural irrigation, fishery, ship locks, seawater tide blocking, urban river landscape engineering and the like.

In terms of construction process, at present, construction of the overflow dam generally adopts a field construction mode and is influenced by a field construction environment, so that the construction process is complex, and the construction cost is correspondingly improved.

As for the structure of the conventional overflow dam, the conventional overflow dam generally only comprises a vertical wall monomer, so that when water overflows the overflow dam and falls, a huge vortex is formed below the overflow dam due to the fact that the falling height is high, the formed vortex can scour the foundation below the overflow dam, and silt scoured down by the vortex is taken away, so that the foundation is hollowed out, and the dam is not stable.

In view of the above problems, patent No. 2019204756957 discloses an assembled type overflow dam which effectively solves the above problems, but the overflow dam still has the following problems:

the dam units of the dam are connected through the connecting assembly, the connecting assembly is soaked in water for a long time, corrosion easily occurs, and strength is reduced. Thus, once the connecting assembly is damaged, the overall strength of the flood dam is reduced, and the flood dam is in danger of being broken.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the patent provides the overflow dam which not only has the characteristics of prefabricating in advance, assembling on site and avoiding the foundation from being hollowed out, but also has the advantages that the overflow dam monomers are arranged in an arc shape, the reliability of the whole overflow dam can be effectively guaranteed, and the danger of bursting is reduced.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

an overflow dam comprises a plurality of overflow dam single bodies and a connecting unit for connecting the plurality of overflow dam single bodies to form a whole, wherein each overflow dam single body comprises a base plate in a fan-shaped structure, at least two pier bodies arranged along the radial direction are arranged on the base plate, a vertical wall is arranged between every two adjacent pier bodies, and the pier bodies and the vertical wall form a continuous main wall body together;

a first arch wall is arranged on the front side of the vertical wall, the height of the first arch wall is lower than that of the vertical wall, and the first arch wall and the main wall form a first drop basin together;

the overflow dam single bodies are arranged in an arc shape and form an arc-shaped structure which is sunken towards the upstream side.

Furthermore, two second arch walls with the height lower than that of the first arch wall are arranged on the outer side of the first arch wall, the inner ends of the second arch walls are fixedly connected with the first arch wall, the outer ends of the second arch walls are fixedly connected with the main wall, and the main wall, the second arch walls and the first arch walls form a second drop basin together.

Further, the lower ends of the first arch wall and the second arch wall are provided with turbulence holes.

Further, the pier body is step-shaped.

Furthermore, the connecting unit comprises a connecting dam body, the connecting dam body comprises a connecting bottom plate in a fan-shaped structure, a plurality of wedge walls arranged along the radial direction are arranged on the connecting bottom plate, a water overflowing dam single body is arranged between every two adjacent wedge walls, and the water overflowing dam single body is wedged tightly between every two adjacent wedge walls.

Furthermore, a water stop strip is arranged between the wedge wall and the overflow dam single body.

Furthermore, the water stop strip is fixedly arranged on the end face of the overflow dam body, and a groove for containing the water stop strip is formed in the end face of the overflow dam body.

Furthermore, the wedge wall includes a wedge portion, the outer end of the wedge surface of the wedge portion is provided with a guide portion, the inner side surface of the guide portion is a guide inclined surface, and when the overflow dam single body is installed between two adjacent wedge walls, the overflow dam single body is wedged between the wedge portions of the two adjacent wedge walls under the limiting effect of the guide portion.

Furthermore, a jacking wall body is arranged on the connecting bottom plate and located on the rear side of the overflow dam monomer, threaded sleeves are pre-embedded in the jacking wall body, and jacking bolts are arranged in the threaded sleeves.

The utility model has the beneficial effects that:

1. the overflow dam has the advantages of being prefabricated in advance, assembled on site and prevented from being hollowed, and the overflow dam units of the overflow dam are arranged in an arc shape, so that the overflow dam units can be squeezed tightly under the action of water, the reliability of the whole overflow dam is guaranteed, and the danger of rushing is reduced.

2. The single bodies of the overflow dam are not required to be connected through the connecting assembly, and after the overflow dam is hoisted in place, the overflow dam single bodies are in a tightly squeezed and fixed state, so that the overflow dam is convenient to install.

3. The lower extreme through at the arch wall sets up the vortex hole, can carry out the disturbance to the water that falls from upper portion, and the water of avoiding falling on upper portion is on rushing to the river bottom basis perpendicularly, can further avoid the river bottom basis to be dug out, is favorable to the stability of dam body.

Drawings

FIG. 1 is a schematic perspective view of the dam;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a top view of the present overflow dam;

FIG. 4 is a sectional view A-A of FIG. 3;

FIG. 5 is a schematic perspective view of a connecting dam;

FIG. 6 is a schematic perspective view of a single dam;

FIG. 7 is a front view of a single dam;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is an enlarged view of portion B of FIG. 8;

fig. 10 is a cross-sectional view taken along line C-C of fig. 7.

In the figure: 1-overflow dam monomer, 11-foundation slab, 12-pier body, 13-vertical wall, 14-first arch wall, 141-first drop pool, 15-second arch wall, 151-second drop pool, 16-turbulent flow hole,

2-connecting dam body, 21-connecting bottom plate, 22-wedge wall, 221-wedging part, 222-guiding part, 2221-guiding inclined plane,

3-water stop strip, 31-countersunk hole,

4-expansion bolt.

Detailed Description

Example one

For convenience of description, a coordinate system is defined as shown in fig. 1, and the left-right direction is taken as a transverse direction, the front-back direction is taken as a longitudinal direction, the up-down direction is taken as a vertical direction, the forward direction is taken as a downstream side, and the backward direction is taken as an upstream side.

As shown in fig. 1 and 3, the overflow dam comprises a plurality of overflow dam single bodies 1 and a connecting unit for connecting the plurality of overflow dam single bodies 1 to form a whole, wherein the plurality of overflow dam single bodies 1 are arranged in an arc shape, and the plurality of overflow dam single bodies 1 form an arc-shaped structure which is concave towards the upstream side.

As shown in fig. 6, the overflow dam single body 1 includes a fan-shaped foundation slab 11, the foundation slab 11 is provided with at least two pier bodies 12 arranged along the radial direction, the pier bodies 12 are uniformly arranged, the outer side surfaces of the pier bodies 12 at the end portions are flush with the end surface of the foundation slab, that is, the left end surface and the right end surface of the overflow dam single body are both a plane. As a specific implementation manner, the foundation slab 11 described in this embodiment is provided with three piers 12.

A vertical wall 13 is arranged between two adjacent pier bodies 12, and the pier bodies 12 and the vertical wall 13 jointly form a continuous main wall. Preferably, the standing wall 13 is of an arc structure and is concave towards the rear side.

A first arch wall 14 in an arc structure is arranged on the front side of the vertical wall 13, and the height of the first arch wall 14 is lower than that of the vertical wall 13. And the left end and the right end of the second arch wall are respectively and fixedly connected with the main wall body. As a specific implementation manner, in this embodiment, the left and right ends of the first arch wall 14 are fixedly connected to the vertical wall 13, respectively. The first arch wall 14 and the vertical wall 13 together form a first drop basin 141.

Further, two second arch walls 15 in an arc structure are arranged outside the first arch wall 14, and the two second arch walls 15 are arranged in a left-right symmetrical manner. The second arch wall 15 is sunken towards the front side, the inner end of the second arch wall 15 is fixedly connected with the first arch wall 14, the outer end of the second arch wall 15 is fixedly connected with the main wall body, and preferably, the outer end of the second arch wall 15 is fixedly connected with the pier body 12. The main wall, the second arch wall 15 and the first arch wall 14 together form a second drop basin 151. The height of the second arch wall 15 is smaller than the height of the first arch wall 14.

Further, the pier bodies 12 are step-shaped, and the front side surface of each layer of pier bodies 12 is an arc-shaped surface.

As shown in fig. 1 and 5, the connection unit is a connection dam 2, the connection dam 2 includes a connection bottom plate 21 in a fan-shaped structure, an inner diameter of the connection bottom plate 21 is smaller than or equal to an inner diameter of the foundation bottom plate 11, and an outer diameter of the connection bottom plate 21 is larger than an outer diameter of the foundation bottom plate 11. The connecting bottom plate 21 is provided with a plurality of wedge walls 22 which are arranged along the radial direction, and the overflow dam single body 1 is arranged between two adjacent wedge walls 22.

The wedge wall 22 include wedge portion 221, the left surface and the right surface of wedge portion 221 are the wedge face, wedge portion 221 on lie in the outer end of wedge face all is provided with guide part 222, wedge portion 221 and guide part 222 form the T type structure jointly. As shown in fig. 4, the inner side surface (the side close to the center of the circle in the radial direction is the inner side) of the guiding portion 222 is a guiding inclined surface 2221 with a low inner part and a high outer part. When the single dam 1 is installed between two adjacent wedge walls 22, the single dam 1 is wedged between the wedging parts 221 of two adjacent wedge walls 22 under the restriction of the guiding parts 222. And two ends of the overflow dam single body 1 are respectively and fixedly provided with a water stop strip 3 extending along the vertical direction, and when the overflow dam single body 1 is installed between two adjacent wedge walls 22, the water stop strips 3 are tightly squeezed between the wedge walls 22 and the overflow dam single body 1.

Preferably, a projection of the wedging portion 221 in a horizontal plane has a fan-shaped structure coaxial with the connecting base plate 21.

During installation, the overflow dam single body 1 is lifted by the lifting device, the overflow dam single body 1 is located right above the installation position, then the overflow dam single body 1 falls down by the lifting device, and in the falling process, after the foundation slab 11 is in contact with the guide inclined plane 2221, as shown in fig. 4, the overflow dam single body 1 continuously falls down or receives the action of the guide inclined plane 2221, and moves obliquely inwards and downwards under the action of the guide inclined plane 2221, namely falls down and moves inwards in the radial direction. In the falling process, the overflow dam single body 1 is extruded by the two wedge walls 22, so that the water stop strip 3 is elastically deformed and is pressed on the wedge walls 22, and finally, the overflow dam single body 1 is wedged and fixed between the two wedge walls 22.

As a specific embodiment, as shown in fig. 2, fig. 7, fig. 8 and fig. 9, in this embodiment, two water stop strips 3 are respectively disposed at two ends of the single dam body 1, the water stop strips 3 are fixedly connected to the single dam body 1 through expansion bolts 4, and the water stop strips 3 are provided with countersunk holes 31 for accommodating the expansion bolts 4.

Preferably, the lateral surface of the water stop strip 3 is a plane, the medial surface of the water stop strip 3 is a semicircular arc-shaped surface, and the left end and the right end of the overflow dam monomer 1 are respectively provided with an arc-shaped groove for accommodating the water stop strip 3.

Thus, when the overflow dam receives the pressure of the upstream side water body, the overflow dam unit 1 is more and more wedged, and the overflow dam unit 1 and the wedge wall 22 body bear the pressure, and the overflow dam cannot be damaged by impact unless the overflow dam unit 1 or the wedge wall 22 body is crushed and crushed.

Further, as shown in fig. 6, the lower ends of the first arch wall 14 and the second arch wall 15 are provided with spoiler holes 16 having a rectangular structure.

The reason for this is that, as shown in fig. 10, by providing the first and

second drop basins

141 and 151, whose heights are sequentially lowered, water from the upstream side can be dropped stepwise, and although the drop height of water at the time of finally dropping to the downstream side can be lowered to reduce the vortex, the water is still dropped vertically. By providing the spoiler 16, when water falls from the first drop tank 141 or the second drop tank 151 to the downstream side, the water flowing out of the spoiler 16 flows out in the horizontal direction, and thus, a lateral impact is generated on the water falling vertically from the top to the bottom, thereby changing the direction of the final water flow, which finally tends not to fall in the vertical direction. Thus, even if the size of the generated vortex cannot be changed, the position of the generated vortex is pushed to the downstream side, so that the phenomenon of hollowing at the position close to the overflow dam is avoided, and the stability of the dam body is ensured.

In addition, even if the water surface on the downstream side has passed through the spoiler hole 16, the water surface level on the downstream side must be lower than the level of the lowest drop basin, that is, the level of the second drop basin 151. According to the principle of the communicating vessel, when the first and

second fall basins

141 and 151 are full, the water level in the first and

second fall basins

141 and 151 at this time must be higher than the water level on the downstream side, so that the water can still flow out through the baffle hole 16.

Example two

The wedge wall 22 only comprises a wedge part 221, a tightly-jacking wall body is arranged on the connecting bottom plate 21 and positioned at the rear side of the overflow dam single body 1, and the height of the tightly-jacking wall body is the same as the thickness of the foundation bottom plate 11. The overtightening wall body is pre-buried and fixed with a threaded sleeve, and a jacking bolt used for jacking the overtopping dam single body 1 forwards is arranged in the threaded sleeve.

When the overtopping dam single body 1 is installed between two adjacent wedge walls 22, a jack is arranged between the jacking wall body and the foundation bottom plate 11, so that the overtopping dam single body 1 is pushed to move forwards and is wedged between the two adjacent wedge walls 22. And then screwing the puller bolt, so that the end part of the puller bolt is pressed on the foundation bottom plate 11 of the overflow dam single body 1, and the overflow dam single body 1 is limited to move backwards.

The rest of the structure is the same as the first embodiment.

EXAMPLE III

The connecting unit is a connecting assembly arranged between two adjacent overflow dam single bodies 1.

Coupling assembling including set up in the first steel sheet at the left and right both ends of overflow dam monomer 1 is provided with the second steel sheet between two adjacent overflow dam monomers 1, the second steel sheet pass through the screw respectively with two first steel sheet fixed connection on the overflow dam monomer 1.

Here, the first steel plate may be fixedly connected to the single dam body 1 by expansion bolts 4, or may be fixed in the single dam body 1 by embedding.

Further, in order to ensure the sealing performance, a rubber water stop strip 3 with a T-shaped section is arranged between the first steel plate and the second steel plate, and the protruding part of the rubber water stop strip 3 is clamped between the first steel plates of the two adjacent overflow dam single bodies 1.

Furthermore, an elastic compression hole penetrating through the rubber water stop strip 3 along the length direction is arranged on a projection part of the rubber water stop strip 3.

Further, the second steel plate is arranged on the upstream face of the dam body. The rest of the structure is the same as the first embodiment.

Claims

1. The utility model provides a dam, includes a plurality of dam monomer and is used for connecting a plurality of dam monomer and forms a holistic coupling unit, its characterized in that: the overflow dam single body comprises a foundation bottom plate in a fan-shaped structure, at least two pier bodies arranged along the radial direction are arranged on the foundation bottom plate, a vertical wall is arranged between every two adjacent pier bodies, and the pier bodies and the vertical wall jointly form a continuous main wall body;

2. A flooddam according to claim 1, wherein: the outer side of the first arch wall is provided with two second arch walls which are lower than the first arch wall in height, the inner ends of the second arch walls are fixedly connected with the first arch wall, the outer ends of the second arch walls are fixedly connected with the main wall, and the main wall, the second arch walls and the first arch walls form a second drop basin together.

3. A flooddam according to claim 2, wherein: and turbulent holes are formed in the lower ends of the first arch wall and the second arch wall.

4. A flooddam according to claim 1, wherein: the pier body is step-shaped.

5. A flooddam according to claim 1, wherein: the connecting unit comprises a connecting dam body, the connecting dam body comprises a connecting bottom plate in a fan-shaped structure, a plurality of wedge walls arranged along the radial direction are arranged on the connecting bottom plate, a flood dam single body is arranged between every two adjacent wedge walls, and the flood dam single body is wedged between every two adjacent wedge walls.

6. A flooddam according to claim 5, wherein: and a water stop strip is arranged between the wedge wall and the overflow dam monomer.

7. A flooddam according to claim 6, wherein: the water stop strip is fixedly arranged on the end face of the overflow dam body, and a groove for containing the water stop strip is formed in the end face of the overflow dam body.

8. A flooddam according to claim 5, wherein: the dam single body is arranged between two adjacent wedge walls, and the dam single body is wedged between the wedging parts of the two adjacent wedge walls under the limiting action of the guide parts.

9. A flooddam according to claim 5, wherein: a jacking wall body is arranged on the connecting bottom plate and located on the rear side of the overflow dam monomer, threaded sleeves are pre-embedded in the jacking wall body, and jacking bolts are arranged in the threaded sleeves.