CN206591601U - The big vast system of grass planting ditch drop based on sponge the idea of the city - Google Patents

Abstract

The utility model discloses a grass-planting ditch flood reduction system based on the concept of a sponge city, aiming at solving the problem that the grass-planting ditch has a weak water storage capacity and does not make full use of rainwater. Grass planting ditch drainage system and water storage system, the water storage system includes grass planting ditch, grass planting ditch includes plants, the lower layer of plants is set as planting soil, the lower layer of planting soil is set as filter layer, and a water storage channel with water storage tanks is arranged below the filter layer , the bottom of the storage channel is laid with a waterproof membrane to reduce the seepage of the storage channel. The utility model is characterized in that the rainwater moistens the planting soil, which is beneficial to the better growth of plants, and the excess water is clearer after being filtered by the filter layer, and the waterproof film reduces the leakage of rainwater in the water storage channel; when the amount of rainwater exceeds the water storage The water storage capacity of the system is to discharge part of the rainwater through the drainage system, and try to avoid excessive water accumulation in the grass planting ditch, which will affect the drainage performance and cause the city to be prone to waterlogging.

Description

Zhicaogou Flood Reduction System Based on the Sponge City Concept

technical field

The utility model relates to the technical field of urban drainage, in particular to a grass-planting ditch flood reduction system based on the concept of a sponge city.

Background technique

Sponge city construction should follow the principles of ecological priority, combine natural approaches with artificial measures, and ensure the safety of urban drainage and waterlogging, maximize the accumulation, infiltration and purification of rainwater in urban areas, and promote the utilization of rainwater resources and ecological environment protection. The construction of "sponge city" is not to overthrow and replace the traditional drainage system, but to "reduce the burden" and supplement the traditional drainage system, so as to maximize the role of the city itself. In the process of sponge city construction, the systematic nature of natural precipitation, surface water and groundwater should be coordinated, water supply, drainage and other water recycling links should be coordinated, and its complexity and long-term nature should be considered.

In view of the above problems, at present, the Chinese patent with the publication number CN205223787U discloses a grass planting ditch for green areas, the key points of its technical solution are: the grass planting ditch for green areas is built on both sides of the road, including green belts and grass planting ditch; Distributed on both sides of the grass-planting ditch, between the green belt and the grass-planting ditch through the transition connection of the grass-planting slope, green plants are planted on the green belt, and outside the green belt of the green grass-planting ditch is a walkway for people Greenway; a separation column is provided at intervals in the grass planting ditch, and the separation column is divided into two parts from the middle, the lower part is a wall to prevent water from flowing through, and the upper part is an isolation net.

In the above scheme, the grass-planting ditch in the green space has the function of water delivery and certain pollution interception and purification, but the water storage capacity is not strong, and the rainwater is not fully utilized. In case of drought, the plants in the grass-planting ditch must be artificially irrigated in a large area.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a grass ditch flood reduction system based on the concept of sponge city, which has a good water storage capacity.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a grass-planting ditch flood reduction system based on the concept of sponge city, including a grass-planting ditch drainage system and a water storage system arranged on the side of the urban road, and the water storage system includes Grass planting ditch, the grass planting ditch includes plants, the lower layer of the plant is set as planting soil, the lower layer of planting soil is set as a filter layer, below the filter layer is set a water storage channel with a water storage tank, and the bottom of the water storage channel is paved to reduce the seepage of the water storage channel Waterproof membrane.

By adopting the above technical scheme, the rainwater passes through the plants and reaches the planting soil to moisten the planting soil, which is conducive to the better growth of the plants. The excess water is filtered by the filter layer and then reaches the water storage tank in the water storage channel, and blocks some sundries as much as possible Wait until it enters the water storage canal to make the water in the water storage tank clearer, and the waterproof membrane reduces the leakage of rainwater in the water storage canal, so that the water storage system has a better water storage effect; If the water storage capacity of the water storage system is improved, part of the rainwater can be discharged through the drainage system, so as to avoid excessive water accumulation in the grass planting ditch affecting the drainage performance and causing the city to be prone to waterlogging, which is more in line with the concept of a sponge city.

The utility model is further configured as follows: hollow seepage bricks are installed in the storage channel.

By adopting the above technical scheme, after the rainwater reaches the storage channel through the filter layer, it penetrates into the seepage bricks, and the seepage bricks further filter the rainwater, and store the filtered rainwater in the water storage tank to reduce the volatilization or flow away of water; At the same time, the permeable bricks have a certain supporting effect on the filter layer, making the structure of the water storage system more firm.

The utility model is further configured as follows: the seepage brick is provided with a seepage hole.

By adopting the above technical scheme, the seepage hole speeds up the speed of rainwater infiltration, and the water storage efficiency is higher. It also facilitates the flow of rainwater between adjacent seepage bricks, and the impact on the seepage bricks is relatively smaller. lifespan.

The utility model is further configured as follows: a water outlet pipe is installed inside the water storage canal, the other end of the water outlet pipe is connected to a water storage tank, and a water suction pump for sucking the water in the water storage canal into the water storage tank is installed between the water storage tank and the water outlet pipe.

By adopting the above technical scheme, when the water storage capacity in the water storage tank exceeds the water storage capacity of the water storage system when the water storage capacity is too much, part of the rainwater can be sucked into the water storage tank through the water suction pump, and used for irrigating green areas in other places, washing cars, etc. , It can also be stored. When running into dry weather, the water in the storage tank will be recharged into the water storage canal to supply the plants on the grass planting ditch.

The utility model is further configured as follows: the drainage system includes a drainage mechanism arranged on the planting soil and connected with municipal drainage pipes.

By adopting the above technical scheme, when the amount of rainwater is too large or floods occur, the rainwater cannot be quickly drained away only by the storage canal and the storage tank, which may cause urban waterlogging. The drainage mechanism speeds up the drainage speed, avoiding urban waterlogging or slowing down The waterlogging time is reduced; the drainage mechanism is set on the planting soil. When the water level in the grass planting ditch reaches a certain height, the rainwater will be drained through the drainage mechanism to speed up the drainage, which improves the drainage efficiency.

The utility model is further configured as follows: the drainage mechanism includes a drainage head provided with drainage holes.

By adopting the above technical scheme, a drainage hole is provided on the drainage head, and rainwater can flow into the municipal drainage pipe through the drainage hole, and at the same time, it plays a blocking role for some sundries, so as to prevent the sundries from entering the drainage mechanism and causing blockage to affect the drainage efficiency.

The utility model is further configured as: the drainage head is higher than the planting soil.

By adopting the above technical scheme, the drainage head is higher than the planting soil, and the planting soil is not easy to block the drainage hole, which facilitates the normal drainage of the drainage mechanism.

The utility model is further configured as follows: the drainage head is arranged in a hemispherical shape, and the drainage holes are evenly distributed on the drainage head.

By adopting the above technical scheme, the hemispherical drainage head is relatively less scouring by rainwater, prolonging the service life of the drainage head; the drainage holes are evenly distributed on the drainage head so that the drainage holes form a height difference relative to the ground, and can drain water when the water level is low There are relatively few drainage holes and the drainage speed is relatively slow. When the water level is high, the drainage holes are relatively large and the drainage speed is relatively fast. The drainage speed is also different according to the water level of the planting soil, which is more intelligent and rational.

The utility model is further configured as follows: the filter layer includes a sandstone layer and a crushed stone layer with a filtering effect.

By adopting the above-mentioned technical scheme, the effect of double filtering through the sandstone layer and the crushed stone layer is better, so that the rainwater entering the storage canal is cleaner, and the storage canal is not easily blocked by debris.

The utility model is further configured as follows: a permeable membrane with permeable holes is laid between the gravel layer and the water storage canal.

By adopting the above-mentioned technical solution, the permeable membrane can filter the rainwater while allowing the rainwater to pass through, and reduce the impact of sundries entering the water storage channel and affecting the water storage capacity.

In summary, the utility model has the following beneficial effects:

The rainwater passes through the plants and reaches the planting soil to moisten the planting soil, which is beneficial to the better growth of the plants. The excess water is filtered through the sand and gravel layers to reach the permeable membrane, and as much as possible to prevent some sundries from entering the permeable holes of the permeable membrane , so that the water entering the storage canal is clearer, and the rainwater reaches the seepage brick through the permeable hole and is stored in the water storage tank; when there is a lot of rainwater, the suction pump is turned on to suck the water seeped from the seepage brick into the storage tank. Reserved for backup; when the city encounters heavy rain or floods, the water level on the planting soil rises, the rainwater reaches the position of the drainage head, and the rainwater is discharged to the municipal drainage pipes through the drainage holes in time to play a role in flood reduction; During the drought season in the city, the water in the storage canal will volatilize and spread to the soil layer to supply water for the plants in the grass-planting ditch. It is easy to cause waste of rainwater. The above schemes have greatly optimized the flood control system of Zhicaogou to improve the utilization rate of rainwater, which is more in line with the concept of sponge city.

Description of drawings

Fig. 1 is the overall mechanism schematic diagram of the present embodiment;

Fig. 2 is the structural representation of drainage mechanism in the present embodiment;

Fig. 3 is the schematic structural view of the drainage head in the present embodiment;

Fig. 4 is a schematic structural diagram of the seepage brick in this embodiment.

In the figure: 1, grass planting ditch; 11, plants; 2, planting soil; 3, filter layer; 31, sand and gravel layer; 32, gravel layer; 33, permeable membrane; 331, permeable hole; 4, storage channel; 41. Water storage tank; 42. Water seepage brick; 421. Water seepage hole; 5. Waterproof membrane; 6. Outlet pipe; 61. Suction pump; 7. Water storage tank;

detailed description

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail.

A grass-planting ditch 1 flood reduction system based on the concept of a sponge city, as shown in Figure 1, includes a grass-planting ditch 1 water storage system laid on the side of an urban road. The water storage system includes a grass-planting ditch 1, which includes a water storage system exposed outside plant 11, the lower layer of the plant 11 is laid as planting soil 2, and the filter layer 3 for filtering rainwater is laid on the lower layer of the planting soil 2, and the filter layer 3 includes a sandstone layer 31, a gravel layer 32 and a gravel layer 32 laid in sequence from top to bottom. A water-permeable membrane 33 for further filtering rainwater is provided with a water-permeable hole 331; the water-storage canal 4 with a water-storage tank 41 is supported under the water-permeable membrane 33. Referring to FIG. 2, a hollow seepage brick 42 is installed in the water-storage canal 4. There are seepage holes 421 on the six surfaces to accelerate water seepage, and the seepage brick 42 not only plays a good supporting role, but also plays a good filtering role; the bottom of the seepage brick 42 is laid with a waterproof membrane to reduce the seepage of the storage channel 4 5.

A water outlet pipe 6 is installed on the top of the water seepage brick 42, and the other end of the water outlet pipe 6 is connected with a water storage tank 7 whose terrain is higher than the water storage canal 4, and a water storage tank is installed between the water storage tank 7 and the water outlet pipe 6 to suck the water in the water storage canal 4 into the water storage tank. The water suction pump 61 of 7, when rainwater is more, can suck the water in the water storage canal 4 in the storage tank 7, be used for irrigating the green space of other places, car wash etc., also can store down when running into dry weather, will The water backfilling of water storage tank 7 enters in the water storage canal 4 and supplies the plants on the grass planting ditch 1 to use.

As shown in Figure 1, the grass ditch 1 flood reduction system based on the sponge city concept also includes a drainage system, the drainage system includes a drainage mechanism 8 installed on the planting soil 2 and connected to the municipal drainage pipeline, combined with Figures 3 and 4, drainage Mechanism 8 includes a hemispherical drainage head 81 with drainage holes 811, and the drainage head 81 is higher than the planting soil 2. When a flood occurs, the rainwater level in the grass planting ditch 1 rises and can pass through when it reaches the drainage hole 811 of the drainage head 81. The municipal drainage pipes are directly discharged to speed up the drainage speed and reduce the urban waterlogging time; the drainage holes 811 are evenly distributed on the drainage heads 81 so that the drainage holes 811 form a height difference relative to the ground, and the drainage holes 811 that can drain when the water level is low are relatively small. Relatively slow, when the water level is high, there are relatively many drainage holes 811 for drainage, and the drainage speed is relatively fast, and the drainage speed is also different according to the height of the water level of the planting soil 2, which is more intelligent and rational.

Through the above scheme, the rainwater reaches the planting soil 2 through the plants 11 to moisten the planting soil 2, which is conducive to the better growth of the plants. The excess water is filtered through the sand layer 31 and the gravel layer 32 to reach the permeable membrane 33, and block it as much as possible. Some sundries enter the permeable hole 331 of the permeable membrane 33 to make the water entering the water storage channel 4 clearer, and the rainwater reaches the permeable brick 42 through the permeable hole 331 and is stored in the water storage tank 41; The water suction pump 61 sucks the water seeped from the water seepage brick 42 into the water storage tank 7 and reserves it for use; The rainwater is discharged to the municipal drainage pipe in time through the drainage hole 811, which plays the role of flood reduction; when the city is dry, the water in the storage canal 4 volatilizes and diffuses to the soil layer to supply water for plants in the grass planting ditch 1, and the water storage canal 4 When the internal moisture is insufficient, the water in the water storage tank 7 can also be poured into the water storage canal 4 for irrigation, and it is not easy to cause waste of rainwater. The above scheme has greatly optimized the flood reduction system of Zhicaogou 1, which has improved the utilization rate of rainwater and is more in line with the concept of sponge city.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (8)

1. A grass-planting ditch flood reduction system based on the concept of a sponge city, characterized in that: it includes a grass-planting ditch (1) drainage system and a water storage system arranged on the side of a city road, and the water storage system includes a grass-planting ditch (1), a grass-planting ditch (1), and a grass-planting ditch (1). The ditch (1) includes plants (11), the lower layer of the plants (11) is set as planting soil (2), the lower layer of the planting soil (2) is set as a filter layer (3), and a water storage tank is arranged below the filter layer (3) (41) of the water storage canal (4), the bottom of the water storage canal (4) is laid with a waterproof membrane (5) that reduces the water seepage of the water storage canal (4); A drainage mechanism (8) connected to a municipal drainage pipeline, the drainage mechanism (8) comprising a drainage head (81) provided with a drainage hole (811). 2. The grass-planting ditch flood control system based on the concept of sponge city according to claim 1, characterized in that: hollow seepage bricks (42) are installed in the storage canal (4). 3. The grass-planting ditch flood control system based on the concept of sponge city according to claim 2, characterized in that: the seepage brick (42) is provided with a seepage hole (421). 4. The grass-planting ditch flood control system based on the concept of sponge city according to claim 1, characterized in that: an outlet pipe (6) is installed inside the storage canal (4), and the other end of the outlet pipe (6) is connected to The water storage tank (7), the water suction pump (61) that the water in the storage channel (4) is sucked into the storage tank (7) is installed between the water storage tank (7) and the outlet pipe (6). 5. The grass-planting ditch flood reduction system based on the concept of sponge city according to claim 1, characterized in that: the drainage head (81) is higher than the planting soil (2). 6. The grass-planting ditch flood reduction system based on the concept of sponge city according to claim 1, characterized in that: the drainage head (81) is set in a hemispherical shape, and the drainage holes (811) are evenly distributed on the drainage head (81) . 7. The grass ditch flood control system based on the concept of sponge city according to claim 1, characterized in that: the filter layer (3) includes a sandstone layer (31) and a gravel layer (32) with a filtering effect. 8. The grass-planting ditch flood control system based on the concept of sponge city according to claim 7, characterized in that: between the gravel layer (32) and the storage canal (4) is laid a water-permeable hole (331) Water permeable membrane (33).