CN206433417U - Sponge urban ecology grass planting ditch - Google Patents

Abstract

The utility model discloses an ecological grass-planting ditch in a sponge city, which aims to solve the problem that the water storage capacity of plants on the slope of the grass-planting ditch is relatively weak, and can only be irrigated in rainy days, and the water for artificial irrigation will also be very fast in dry weather. The main points of the technical plan are as follows: including the slope surface, the slope surface is provided with a water storage structure, the water storage structure includes a water storage tank with a water inlet, and the water storage tank The cavity forms a water storage tank for storing water. The utility model is characterized in that rainwater enters the water storage tank in the water storage tank through the water inlet, and part of the rainwater is stored as water supply for plants on the slope, which further improves the utilization rate of rainwater, and is more in line with the requirements of the sponge city. It reduces the irrigation of plants on the slope during drought and saves water resources; at the same time, the water storage tank has a certain interception and buffering effect on the rainwater flowing down the slope, which is more conducive to reducing soil erosion and protecting the environment.

Description

Sponge City Ecological Grass Ditch

technical field

The utility model relates to the technical field of urban drainage, in particular to a sponge city ecological grass planting ditch.

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.

With the acceleration of China's urbanization process, the impermeable area of cities has increased significantly, leading to an earlier flood peak and greater flood volume under the same rainfall conditions, which poses a huge pressure on urban drainage and river flood discharge.

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 plan, the grass-planting ditch in the green space has the function of water delivery and certain pollution interception and purification. However, in the above-mentioned plan, the grass-planting ditch is set as a transitional connection of the side slope, and all the rainwater is collected at the bottom of the grass-planting ditch, while the plants on the slope of the grass-planting ditch store water The capacity is relatively weak, and it can only be irrigated in rainy days. In dry weather, the artificial irrigation water will soon flow to the bottom of the ditch, affecting the growth of plants on the slope.

Utility model content

In view of the deficiencies in the prior art, the purpose of the utility model is to provide an ecological grass-planting ditch in a sponge city, and the slope of the grass-planting ditch has good water storage performance.

The above-mentioned technical purpose of the utility model is achieved through the following technical proposals: a sponge city ecological grass-planting ditch, including a slope surface, a water storage structure is arranged on the slope surface, and the water storage structure includes a water storage tank with a water inlet, The cavity in the water storage tank forms a water storage tank for storing water.

By adopting the above technical solution, rainwater enters the water storage tank in the water storage tank through the water inlet, and part of the rainwater is stored as water supply for plants on the slope, which further improves the utilization rate of rainwater, which is more in line with the requirements of the sponge city, and also It reduces the irrigation of plants on the slope during drought and saves water resources; at the same time, the water storage tank has a certain interception and buffering effect on the rainwater flowing down the slope, which is more conducive to reducing soil erosion and protecting the environment.

The utility model is further configured as follows: the water storage tank is buried below the plant roots, one end of the water storage tank extends to the slope to expose the ground to form an extension, and the water inlet is opened in the extension and extends into the water storage tank.

By adopting the above-mentioned technical scheme, the water storage tank is buried under the root of the plant on the one hand to reduce the evaporation of rainwater in the water storage tank, and on the other hand to facilitate the plants to absorb water; the extension exposed to the ground facilitates the collection of rainwater in the water storage tank, and from The water that the water inlet directly flows into the water storage tank is cleaner and has relatively less sundries.

The utility model is further configured as follows: the water inlets opened on the extension part are divided into two groups according to the opening directions, one group of opening directions is parallel to the slope surface, and the other group of opening directions is perpendicular to the slope surface.

By adopting the above technical scheme, multiple water inlets increase the flow of rainwater into the water storage tank, which is more conducive to the collection of rainwater; and the water inlets are opened in different directions, which is further conducive to the collection of rainwater, and the opening direction is parallel to the slope. The water inlet can collect the rainwater flowing down on the slope, and the water inlet whose opening direction is perpendicular to the slope can directly receive the rainwater falling from the air or on the plants.

The utility model is further configured as follows: the upper part of the water storage tank is equipped with a fixed plate with permeable holes, and the water storage tank is formed by the fixed plate and the bottom of the water storage tank.

By adopting the above-mentioned technical scheme, the fixed plate separates the lower part of the water storage tank as a water storage tank, so as to minimize some sundries falling into the water storage tank, and the rainwater enters the water storage tank through the permeable holes to realize water storage, and at the same time The speed of evaporation in the water storage tank is reduced, so that the water supply in the water storage tank lasts longer.

The utility model is further configured as: a buffer plate for buffering water flow is arranged above the fixed plate.

By adopting the above technical scheme, the buffer plate buffers the inflow speed of rainwater entering from the water inlet, which has a certain protective effect on the water storage tank, prolongs the service life of the water storage tank, and also reduces the rapid speed of debris in the rainwater. When rainwater enters the storage tank.

The utility model is further configured as follows: a permeable membrane is laid on the top of the fixing plate, and a filter hole for filtering rainwater is opened on the permeable membrane.

By adopting the above technical solution, the permeable membrane can filter rainwater to a certain extent while allowing rainwater to pass through, and reduce debris from entering the water storage tank to affect the water storage capacity.

The utility model is further configured as follows: a crushed stone layer for filtering rainwater is laid above the fixing plate.

By adopting the above technical scheme, on the one hand, the gravel layer plays a role in filtering rainwater, minimizing the entry of soil and other sundries into the water storage tank; Shock, prolong the service life of the water storage tank.

The utility model is further configured as follows: a sandstone layer for filtering rainwater is laid above the fixing plate.

By adopting the above technical scheme, on the one hand, the sand and gravel layer plays a role in filtering rainwater, minimizing the entry of soil and other sundries into the water storage tank; Shock, prolong the service life of the water storage tank.

The utility model is further configured as follows: the bottom of the fixing plate is laid with a barrier film that prevents gravel from entering the water storage tank, and the barrier film is provided with water seepage holes interlaced with the filter holes.

By adopting the above technical scheme, the presence of the barrier film and the permeable film at the same time has a good filtering effect on rainwater. The interlaced distribution of seepage holes and filter holes not only has a better filtering effect, but also further reduces the evaporation of rainwater in the water storage tank. The sink will be supplied with water for a longer period of time.

The utility model is further configured as: the inner wall and the bottom of the water storage tank are laid with a waterproof layer to reduce rainwater leakage.

By adopting the above technical solution, the waterproof layer reduces the leakage of rainwater from the inner wall and bottom of the water storage tank, so that the water storage tank can supply water for a longer time.

In summary, the utility model has the following beneficial effects: rainwater penetrates through the water inlet or the soil at the top of the water storage tank to reach the sand layer, then passes through the gravel layer to reach the permeable membrane, and passes through the filter hole fixing plate of the permeable membrane, finally After being further filtered by the barrier film, it enters the water storage tank; in case of dry weather, the water in the water storage tank evaporates through the barrier film, fixed plate, and permeable film to the gravel layer, and then enters the soil layer through the sand and gravel layer to supply water to plants. Because the evaporation process takes a long distance and the rainwater evaporates slowly, it can meet the basic water consumption of plants and save water resources, which is more in line with the concept of sponge city.

Description of drawings

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

Fig. 2 is a schematic structural diagram of a single water storage tank in this embodiment.

In the figure: 1, slope; 11, planting soil; 2, water storage tank; 21, water inlet; 22, water storage tank; 23, extension; 231, buffer plate; 24, fixed plate; 241, permeable hole; , plant; 4, permeable membrane; 41, filter hole; 5, gravel layer; 6, sand layer; 7, barrier membrane; 71, seepage hole; 8, waterproof layer;

detailed description

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

A kind of sponge city ecological grass-planting ditch, as shown in Figure 1, comprises slope 1, in conjunction with Figure 2, is laid with planting soil 11 on slope 1, is planted with plant 3 in planting soil 11, is installed on slope 1 and is buried in The water storage structure below the root position of the plant 3, the water storage structure includes a water storage tank 2, one end of the water storage tank 2 extends to the slope 1 and exposes the ground to form an extension 23, and the extension 23 is provided with a water inlet 21, according to the water inlet 21 The opening direction is divided into two groups, one group of opening direction is parallel to the slope 1, and the other group of opening direction is perpendicular to the slope 1, both groups of water inlets 21 extend into the water storage tank 2, and the extension 23 is above the fixed plate 24 A buffer plate 231 for buffering water flow is integrally formed.

Below the buffer plate 231, a sandstone layer 6 for filtering rainwater, a gravel layer 5, and a water-permeable membrane 4 with a filter hole 41 for filtering rainwater are successively laid. The bottom of the plate 24 and the water storage tank 2 forms a cavity to form the water storage tank 22; the bottom of the fixed plate 24 is laid with a barrier film 7 that prevents gravel from entering the water storage tank 22, and the barrier film 7 is provided with water seepage holes 71 interlaced with the filter holes 41 ; The inner wall and bottom of the water storage tank 2 are laid with a waterproof layer 8 to reduce rainwater leakage.

As shown in Figure 2, the upper part of the water storage tank 2 relative to the extension part 23 is also integrally formed with an overflow plate 9 and its height is equal to the position of the root of the plant 3 when the plant 3 is planted. The loss of sandstone and gravel in the sandstone layer 6 and the gravel layer 5, on the other hand, when the rainwater is too much, it can also overflow from the overflow plate 9, so as to avoid the situation that the rainwater soaks the plant 3 and causes the plant 3 to die. At the same time, it is not easy to limit the growth of the plants 3. The root system of the plants 3 can grow to the soil layer outside the water storage tank 2 through the overflow plate 9 to obtain more nutrients.

Through the above scheme, the rainwater infiltrates through the water inlet 21 or the soil at the top of the water storage tank 2 to the sand layer 6, then passes through the gravel layer 5 to the permeable membrane 4, passes through the filter holes 41 of the permeable membrane 4, fixes the plate 24, and finally passes through The further filtration of the barrier film 7 enters the water storage tank 22; when encountering dry weather, the water in the water storage tank 22 evaporates through the barrier film 7, the fixed plate 24, and the permeable film 4 to the gravel layer 5, and then enters the soil through the sand layer 6 The layer supplies water to the plants 3. Because the evaporation process takes a long distance and the rainwater evaporates slowly, it can meet the basic water consumption of the plants 3 and save water resources, which 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 (10)

1. A sponge city ecological grass planting ditch, comprising a slope (1), is characterized in that: the slope (1) is provided with a water storage structure, and the water storage structure includes a water storage tank (2) provided with a water inlet (21). ), the cavity in the water storage tank (2) forms a water storage tank (22) for water storage. 2. The sponge city ecological grass planting ditch according to claim 1, characterized in that: the water storage tank (2) is buried below the root position of the plant (3), and one end of the water storage tank (2) faces the slope (1 ) is extended to expose the ground to form an extension (23), and the water inlet (21) is opened in the extension (23) and extends into the water storage tank (22). 3. The sponge city ecological grass planting ditch according to claim 2, characterized in that: the water inlets (21) provided on the extension part (23) are divided into two groups according to the opening direction, and the opening direction of one group is parallel to the slope surface (1), another set of opening directions is perpendicular to the slope (1). 4. The sponge city ecological grass planting ditch according to claim 1, characterized in that: the top of the water storage tank (2) is equipped with a fixed plate (24) with a water permeable hole (241), and the water storage tank (22) consists of The fixed plate (24) and the bottom of the water storage tank (2) are formed. 5. The sponge city ecological grass planting ditch according to claim 4, characterized in that: a buffer plate (231) for buffering water flow is arranged above the fixed plate (24). 6. The sponge city ecological grass planting ditch according to claim 4, characterized in that: a permeable membrane (4) is laid on the top of the fixed plate (24), and a filter hole (41) for filtering rainwater is provided on the permeable membrane (4). ). 7. The sponge city ecological grass planting ditch according to claim 4, characterized in that: a gravel layer (5) for filtering rainwater is laid above the fixing plate (24). 8. The sponge city ecological grass planting ditch according to claim 4, characterized in that: a sandstone layer (6) for filtering rainwater is laid above the fixing plate (24). 9. The sponge city ecological grass planting ditch according to claim 6, characterized in that: the bottom of the fixed plate (24) is laid with a barrier film (7) that prevents gravel from entering the water storage tank (22), and a barrier film (7) is set on the barrier film (7). There are water seepage holes (71) distributed alternately with the filter holes (41). 10. The sponge city ecological grass planting ditch according to claim 1, characterized in that: the inner wall and bottom of the water storage tank (2) are laid with a waterproof layer (8) to reduce rainwater leakage.