Delayed overflow structure for sponge city front pond

Abstract

The present invention discloses a delayed overflow structure for a pre-pond in a sponge city, comprising a storage and sedimentation tank body formed at the end of the pre-pond, wherein the wall of the storage and sedimentation tank body is composed of a lower mortar masonry part and an upper dry-inserted stone masonry part, and further comprising a concrete drainage pipe connecting the interior of the storage and sedimentation tank body with an external drainage system. The two-layer stone masonry structure is used to play a role in sedimentation and filtration, and a concrete drainage pipe is arranged on the inner side to discharge rainwater in the sedimentation tank. When the delayed overflow structure is arranged at the end of the pre-pond as a sedimentation structure, when the water level is not higher than the lower mortar masonry structure, the rainwater will be stored in the pre-pond for natural sedimentation and regulation. When the rain is heavy and the water level of the rainwater stored in the pre-pond is higher than the lower mortar masonry structure, the rainwater will penetrate into the delayed overflow structure through the upper dry-inserted stone masonry structure for secondary regulation and sedimentation, further enhancing the purification effect of rainwater, slowing down the loss rate of rainwater, and reducing the pressure of the drainage network.

Description

Technical Field

[0001] The present invention belongs to the technical field of rainwater drainage and storage in sponge cities, and in particular relates to a delayed overflow structure for a front pond in a sponge city. Background Art

[0002] In the current traditional road drainage facility construction process, direct discharge is mostly used to discharge rainwater directly into nearby natural water bodies or drainage ditches. This method will cause great pollution to natural water bodies and also cause waste of rainwater.

[0003] In order to solve the serious problems of urban water pollution and soil erosion, the concept of sponge city is proposed and applied. The core concept of sponge city is "infiltration, retention, storage, purification, use and discharge", which means that rainwater can be purified and stored through the use of sponge facilities, minimizing the impact on the natural environment and making maximum use of rainwater resources. Summary of the invention

[0004] The present invention mainly aims at the deficiencies of the prior art and provides a delayed overflow structure for a sponge city front pond, which has the advantages of good sedimentation and filtration effect and convenient construction. It can effectively utilize rainwater resources, reduce pollution to natural water bodies, and play a role in sponge city construction.

[0005] The technical solution adopted by the present invention is: a delayed overflow structure for a sponge city front pond, which includes a regulating sedimentation tank body formed at the end of the front pond, the pool wall of the regulating sedimentation tank body is composed of a lower mortar masonry part and an upper dry-inserted stone part, and also includes a concrete drainage pipe connecting the interior of the regulating sedimentation tank body with the external drainage system.

[0006] In some embodiments of the delayed overflow structure of the present invention, the pool wall is U-shaped and is jointly formed with the wall at the end of the front pond to form the regulating sedimentation pool body.

[0007] In some embodiments of the delayed overflow structure of the present invention, the concrete drainage pipe is buried in the wall.

[0008] In some embodiments of the delayed overflow structure of the present invention, the top elevation of the concrete drainage pipe is higher than the top elevation of the dry-inserted stone masonry portion, and the bottom elevation of the concrete drainage pipe is lower than the bottom elevation of the dry-inserted stone masonry portion.

[0009] In some embodiments of the delayed overflow structure of the present invention, the height of the mortar-laid stone portion is greater than the height of the dry-inserted stone portion.

[0010] In some embodiments of the delayed overflow structure of the present invention, the height of the mortar-laid stone part is 600 mm, and the height of the dry-inserted stone part is 500 mm.

[0011] In some embodiments of the delayed overflow structure of the present invention, the wall is made of rough stone or block stone.

[0012] In some embodiments of the delayed overflow structure of the present invention, the concrete drainage pipe is made of a reinforced concrete pipe.

[0013] By adopting the above technical scheme, the technical effects of the present invention are as follows: the two-layer masonry structure is used to play the role of sedimentation and filtration, and a concrete drain pipe is arranged on the inner side to discharge the rainwater in the sedimentation tank. When the delayed overflow structure is arranged at the end of the front pond as a sedimentation structure, when the water level is not higher than the lower mortar masonry structure, the rainwater will be stored in the front pond for natural sedimentation and storage. When the rain is heavy and the water level of the rainwater stored in the front pond is higher than the lower mortar masonry structure, the rainwater will penetrate into the delayed overflow structure through the upper dry-inserted masonry structure for secondary storage and sedimentation, further enhancing the purification effect of rainwater, slowing down the loss rate of rainwater, and reducing the pressure of the drainage network. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a general plan schematic diagram of a delayed overflow structure for a sponge city front pond according to the present invention.

[0016] Figure 2 It is a partial plan view of a delayed overflow structure for a sponge city front pond according to the present invention.

[0017] Figure 3 It is a vertical view of a delayed overflow structure for a sponge city front pond according to the present invention.

[0018] Figure 4 This is a cross-sectional view of a delayed overflow structure for a sponge city front pond according to the present invention ( Figure 2 1-1 cross-sectional view). DETAILED DESCRIPTION

[0019] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0020] In view of the current situation that the drainage and purification capacity of urban road drainage facilities is insufficient and the pollution to the natural environment is relatively serious, a pre-pond delayed overflow structure designed using the concept of sponge city construction is provided. It has the advantages of good sedimentation and filtration effect and convenient construction. It can effectively utilize rainwater resources, reduce pollution to natural water bodies, and play the role of sponge city construction.

[0021] The delayed overflow structure of the front pond of the present invention is mainly used in wetland areas where sponge city construction is required. The delayed overflow structure enhances the water storage and natural purification capabilities of the front pond. Its own structure can also play a role in sedimentation and filtration, retaining rainwater while preventing waterlogging and rainwater pollution.

[0022] like Figures 1 to 4 As shown, an embodiment of the present invention provides a delayed overflow structure for a sponge city front pond. As shown in the figure, the delayed overflow structure is arranged at the end of the front pond 20, and a regulating sedimentation tank body 10 is formed at the end of the front pond 20. The wall of the regulating sedimentation tank body 10 is composed of an upper and lower two-layer masonry structure, the lower part is a mortar masonry part 11, and the upper part is a dry-inserted masonry part 12, wherein the height of the upper mortar masonry part 11 is about 600mm, and the height of the dry-inserted masonry part 12 is about 500mm, and the height of the mortar masonry part 11 is slightly greater than the height of the dry-inserted masonry part 12. The size of the regulating sedimentation tank body 10 is about 1500mm*2500mm, and the thickness of the pool wall is about 500mm.

[0023] The mortar masonry part 11 is made of rough stone mortar. Mortar masonry is a block stone masonry using a cementing material. The stones rely on the bonding force, friction force and weight of the cementing material to keep the building stable. Since the gaps between the stones are densely filled, it has better integrity, density and strength, can prevent water seepage and leakage, and increase the ability to resist erosion.

[0024] The dry-insertion stone masonry part 12 adopts the dry-insertion method of rough stone. Dry-insertion stone masonry is a block stone masonry without a cementing material. It relies on the weight of the stone itself and the friction between the contact surfaces of the stone blocks to remain stable under the action of external forces, and is usually used in retaining walls, slope protection, embankment and other projects.

[0025] The present invention adopts a two-layer stone masonry structure so that when it serves as the terminal regulating and sedimentation structure of the front pond, it can retain a part of the rainwater so that the pollutants in the initial rainwater can be fully settled. The upper dry-inserted stone masonry can also play a filtering role, further enhancing the ability of the front pond itself to regulate and purify rainwater, and reducing the pollution of rainwater to natural water bodies.

[0026] A concrete drainage pipe 13 is also provided inside the delayed overflow structure for the sponge city front pond of the present invention for discharging rainwater in the storage sedimentation tank body 10. The concrete drainage pipe 13 is made of reinforced concrete pipe with a diameter of about 1 m.

[0027] The three sides of the regulating and storing sedimentation tank body 10 are arranged in a U shape, and together with a wall 21 at the end of the front pond 20, a rectangular regulating and storing sedimentation tank body 10 is formed. The wall 21 is made of rough stone or block stone, and can be a retaining wall between the front pond and the sidewalk and green area. The concrete drainage pipe 13 is buried in the wall 21, and connects the interior of the regulating and storing sedimentation tank body 10 with the concrete drainage pipe of the external drainage system. The excess rainwater filtered by the regulating and storing sedimentation tank body 10 can be discharged to the nearby natural water body or drainage ditch through the concrete drainage pipe 13.

[0028] like Figure 4 As shown, the top elevation of the concrete drainage pipe 13 is slightly higher than the top elevation of the dry-inserted stone masonry portion 12 , and the bottom elevation of the concrete drainage pipe 13 is slightly lower than the bottom elevation of the dry-inserted stone masonry portion 12 .

[0029] The working mode of the delayed overflow structure for the pre-pond of the sponge city of the present invention is: using the two-layer masonry structure to play the role of sedimentation and filtration, and a concrete drain pipe is arranged on the inside to discharge the rainwater in the sedimentation tank. When the delayed overflow facility is arranged at the end of the pre-pond as a sedimentation structure, when the water level is not higher than the lower mortar masonry structure, the rainwater will be stored in the pre-pond for natural sedimentation and storage. When the rain is heavy and the water level of the rainwater stored in the pre-pond is higher than the lower mortar masonry structure, the rainwater will penetrate into the delayed overflow facility through the upper dry-inserted masonry structure for secondary storage and sedimentation, further enhancing the purification effect of rainwater, slowing down the loss rate of rainwater, and reducing the pressure of the drainage network.

[0030] The invention discloses a delayed overflow structure for a sponge city front pond, which mainly utilizes a double-layer masonry structure, wherein the lower part is a mortar-laid block stone, and the upper part is a dry-inserted block stone structure, and a concrete drainage pipe is arranged inside, and the filtered excess rainwater can be discharged to a nearby water body through the pipe. While playing the role of sedimentation and filtration, the regulation and storage function of the front pond can be fully utilized, rainwater can be preserved to the maximum extent, and the loss of rainwater can be slowed down. In the face of heavy rain, more accumulated rainwater can be discharged in time to prevent waterlogging.

[0031] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0032] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A delayed overflow structure for a sponge city front pond, characterized in that: It includes a storage and sedimentation tank body formed at the end of the front pond, the tank wall of the storage and sedimentation tank body is composed of a mortar-laid stone part at the bottom and a dry-inserted stone part at the top, and also includes a concrete drainage pipe connecting the interior of the storage and sedimentation tank body with an external drainage system; The mortar masonry part adopts the method of rough stone mortar masonry; The dry-insertion stone masonry part adopts the dry-insertion method of rough stone; The concrete drainage pipe is buried in the wall at the end of the front pond; The top elevation of the concrete drainage pipe is higher than the top elevation of the dry-inserted stone masonry portion, and the bottom elevation of the concrete drainage pipe is lower than the bottom elevation of the dry-inserted stone masonry portion.

2. The delayed overflow structure for the sponge city front pond according to claim 1, characterized in that: The pool wall is U-shaped and is formed together with the wall at the end of the front pond to form the regulating sedimentation pool body.

3. The delayed overflow structure for the sponge city front pond according to claim 1, characterized in that: The height of the mortar-laid stone part is greater than the height of the dry-inserted stone part.

4. The delayed overflow structure for the sponge city front pond according to claim 1, characterized in that: The height of the mortar-laid stone part is 600 mm, and the height of the dry-inserted stone part is 500 mm.

5. The delayed overflow structure for the sponge city front pond according to claim 1, characterized in that: The wall is made of rough stone or block stone.

6. The delayed overflow structure for the sponge city front pond according to claim 1, characterized in that: The concrete drainage pipe is made of reinforced concrete pipe.

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