CN206128466U - Roof retaining greening structure - Google Patents

Abstract

The utility model relates to a green roof technology field especially relates to a roof retaining greening structure. It is including setting up planting groove and the catch basin that is used for planting the vegetation on the roof, plant the groove with catch basin bottom intercommunication. The utility model discloses in to set up the purpose of planting the groove and great or water when too much at the rainfall in order preventing, loose being destroyed of ground that leads to planting the inslot is moved along with rivers to the component of planting each layer of groove, is less than the water -storage layer who plants the inslot owing to plant tank bottom portion with highest water level in catch basin intercommunication and the catch basin simultaneously, thus this structure can reach the useful storage can prevent again to plant in the groove water too much and lead to the vegetation root system to be steeped mashed problem. In arid period, the rainwater of storing in the catch basin can be absorbed the utilization by plant roots.

Description

A roof water storage greening structure

technical field

The utility model relates to the technical field of roof greening, in particular to a roof water storage greening structure.

Background technique

With the increase of my country's urban population, urban land is becoming increasingly scarce. Under the background of less and less land for greening on the ground in urban built-up areas and high cost of demolition and relocation, the use of green roofs is a good way to improve the urban living environment. Moreover, roof greening not only improves the urban living environment, but also improves the thermal insulation performance of the roof and purifies the air. In addition, as my country vigorously promotes the construction of sponge cities, roof greening is an important measure for rainwater infiltration and storage.

However, the roof greening is more inconvenient to manage and maintain than the ground greening because the vegetation is planted on the roof surface. The soil moisture retention function of the roof greening is also relatively weak, and frequent irrigation is required. The irrigation of the roof greening in the higher area increases. Reduced water consumption, energy consumption, and labor costs for operation and maintenance. On the other hand, when the amount of rainfall is large, the soil and the fertilizer applied in the soil will be lost along with the rainwater as the heavy rain washes away, reducing the efficiency of fertilizer use while allowing eutrophication substances to enter the sewer pipes and pollute urban water bodies.

Therefore, how to propose a roof water storage and greening structure that can collect rainwater in the case of a large amount of rainfall, to solve the large workload of artificial irrigation in the prior art, and the high maintenance cost of roof greening in the later period, is a need for those skilled in the art. Solved technical problems.

Utility model content

The purpose of the utility model is to propose a roof water storage and greening structure, which can solve the problems of large manual irrigation workload and high maintenance cost of roof greening in the prior art.

The purpose of this utility model is also to propose a roof water storage and greening structure, which can solve the problem in the prior art that when the rainfall is large, the soil and the fertilizer applied in the soil are washed away into the sewer pipe and pollute the urban water body.

For this purpose, the utility model adopts the following technical solutions:

Provided is a roof water storage and greening structure, comprising a planting tank and a water storage tank arranged on the roof for planting vegetation, and the planting tank communicates with the bottom of the water storage tank.

Preferably, the height of the water storage tank is smaller than the height of the planting tank.

Preferably, vegetation, planting soil layer, filter layer, water storage layer, filter layer, drainage layer, isolation layer, root puncture resistant waterproof layer, and waterproof layer are sequentially arranged in the planting tank from top to bottom.

Preferably, the height H of the water storage tank is not higher than the height h of the water storage layer.

Preferably, a water replenishment device is further included, and the outlet of the pipeline of the water replenishment device is located above the water storage tank.

Preferably, the top of the water storage tank is provided with a cover plate.

Preferably, it also includes a drainage groove, the drainage groove is composed of a parapet and the water retaining wall of the water storage tank, a drainage pipeline is provided at the bottom of the drainage groove, and a rainwater outlet is provided at the top of the drainage pipeline.

As a preference, the aquifer is made of water-storage material, and filter layers are arranged above and below the water-storage material, and the water-storage material is any one or more of pebbles, ceramsite, sand, and gravel. kind of composition.

Preferably, the aquifer is a drainage board, and the number of the drainage board is not less than one, and the thickness of the aquifer is not less than 80mm.

Preferably, the thickness of the water storage layer is 80mm-300mm; the thickness of the drainage layer is 5mm-50mm.

Beneficial effects of the utility model:

The utility model is provided with the purpose of the storage tank to collect rainwater to save irrigation water and reduce manual maintenance work.

The purpose of setting up the planting trough in the utility model is to prevent the rock and soil in the planting trough from loosening and being washed away when the components of each layer of the planting trough flow with the water when the rainfall is large or the water is too much. The water storage tank is connected and the highest water level in the water storage tank is lower than the aquifer in the planting tank, so this structure can not only store water effectively but also prevent the root system of the vegetation from being soaked due to excessive water in the planting tank. During dry periods, the rainwater stored in the tank can be absorbed and utilized by plant roots.

At the same time, the roof water storage tank can also prevent the fertilizer applied in the roof planting tank from losing rapidly with the rainfall, and can be slowly absorbed by the plants as the water stays in the water storage tank.

Description of drawings

Fig. 1 is a schematic structural view of the roof water storage and greening structure provided by the utility model.

In the picture:

1. Vegetation planting; 2. Water storage tank; 3. Planting tank; 4. Planting soil layer; 5. Water storage layer; 6. Filter layer; 7. Drainage layer; 8. Isolation layer; 9. Root puncture-resistant waterproof layer; 10. Waterproof layer; 11. Water supply device; 12. Drainage tank; 13. Parapet wall; 14. Retaining wall; 15. Drainage pipeline; 16. Rainwater outlet; 17. Retaining wall; 18. Water hole; 19 1. The basic structure layer of the roof; 20. The base layer of the roof structure.

detailed description

In order to make those skilled in the art better understand the technical solution of the utility model, the technical solution of the utility model will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Figure 1, a kind of roof water storage greening structure is provided in the present embodiment, it comprises the planting tank 3 that is arranged on the roof and is used for planting vegetation 1 and the water storage tank 2 that collects rainwater, and described planting tank 3 and all The bottom of the water storage tank 2 is connected. Wherein the planting tank 3 is surrounded by a retaining wall 17, and the water storage tank 2 is surrounded by a water retaining wall 14 and an earth retaining wall 17. In the present embodiment, the planting tank 3 and the water storage tank 2 are connected by a water hole 18, namely The bottom of the retaining wall 17 is provided with at least one water hole 18 to communicate the water storage tank 2 with the planting tank 3 .

The water hole 18 communicates the planting tank 3 with the water storage tank 2, and the highest water level in the water storage tank is lower than the height of the aquifer 5 in the planting tank, which can prevent the vegetation from rotten or rotten due to too much water in the planting tank 3. Drought caused by lack of water in a cropping system.

In this embodiment, also include a replenishment device 11, wherein the replenishment device 11 is connected with the water pipe, and the purpose of setting the replenishment device 11 is to replenish water to the water storage tank 2. Replenishing water further saves the step of artificial irrigation. In this embodiment, the water storage tank 2 is provided with a dry liquid level, and a liquid level sensor for detecting the liquid level is arranged at the dry liquid level. When the liquid level sensor detects that the liquid level in the water storage tank 2 is lower than the drought liquid level, the controller will control the replenishment valve to open to replenish water for the water storage tank 2 .

In addition, the roof water storage and greening structure includes a drainage channel 12, and the drainage channel 12 is composed of a parapet wall 13 and a water retaining wall 14 of the water storage tank. The height of the layer 5, that is, the height of the retaining wall 14 is less than the height of the aquifer 5 in the planting groove 3, and the height of the retaining wall 14 is less than the height of the parapet wall 13, so that excess water can be guaranteed to diffuse from the top of the retaining wall 14. Through entering in the drainage tank 12, prevent plant root system from soaking in the aquifer 5 simultaneously. When the water level in the water storage tank 2 exceeded the height of the top of the water retaining wall 18, the water in the water storage tank 2 crossed the top of the water retaining wall 18 and flowed into the drainage tank 12. It should be noted that the main function of the drainage tank 12 is to Excess rainwater is drained.

In order to discharge the water in the drainage tank 12 in time, a drainage pipeline 15 is provided at the bottom of the drainage tank 12 . After the excess water in the planting tank 3 flows into the water storage tank 2, due to the limited height of the water storage tank 2, the excess water will flow into the drainage tank 12. In order to reduce the pressure on the roof, the water in the drainage tank 12 needs to be discharged in time For this reason, the bottom of the drainage tank 12 is provided with a drainage pipeline 15, and excess water flows out from the drainage pipeline 15 and enters the sewer pipe. In order to prevent the outlet of the drainage pipeline 15 from being blocked by fallen leaves or other impurities and dirt, the top of the drainage pipeline 15 is provided with a rainwater outlet 16 .

Further, the top of the water storage tank 2 is provided with a cover plate. The purpose of setting the cover plate is to prevent the water in the water storage tank 2 from evaporating too much in a high temperature environment, and at the same time prevent debris such as fallen leaves from falling into the water storage tank 2 and affecting the water quality in the water storage tank 2 .

Drainage tank 12, water storage tank 2, and planting tank 3 are located on the basic structure layer 19 of the roof, while the basic structure layer 19 is located on the base layer 20 of the roof structure.

Planting tank 3 includes planting vegetation 1, planting soil layer 4, filter layer 6, water storage layer 5, filter layer 6, drainage layer 7, isolation layer 8, root puncture resistant waterproof layer 9, waterproof Layer 10. Wherein, the height H of the water storage tank 2 is lower than the height h of the water storage layer 5 and not less than 20mm, and the distance from the top of the water retaining wall 14 to the bottom of the water storage tank 2 is the maximum liquid level that the water storage tank can reach.

The aquifer 5 is composed of water-storage materials, and the upper and lower sides of the water-storage materials are provided with filter layers 6 to isolate from the soil. The water-storage materials are composed of any one or more of pebbles, ceramsite, sand, and gravel. The filter layer 6 can also consist of non-woven fabrics or other materials other than non-woven fabrics, such as geotextiles. Because the thickness of the water storage layer 5 needs to consider load and water storage, when the water storage layer 5 is too thick, the roof load is too large, and the water storage capacity that is too thin is limited. As a preference, the thickness of the water storage layer 7 in the present embodiment is 80mm ~ 300mm. Of course, in other embodiments, the water storage layer 5 can also be a drainage board, wherein the number of the drainage boards is not less than one, and when there are multiple drainage boards, the drainage boards are stacked one after another.

Wherein, the above-mentioned drainage layer 7 is made of a water drainage (storage) board or a water drainage (storage) coiled material, and the thickness of the drainage layer is 10 mm to 50 mm.

The roof water storage and greening structure provided in this embodiment can store the rainwater infiltrated through the roof greening in the water storage tank 2 during heavy rainfall. And in the drought period, the stored rainwater is absorbed by the root system of the plants through the capillary action of the paved material gaps in the aquifer 5 .

Note that the basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model, and the claimed scope of the utility model is defined by the appended claims and their equivalents.

Claims (10)

1. a roof water storage greening structure, is characterized in that, comprises the planting tank (3) that is arranged on the roof and is used for planting vegetation (1) and water storage tank (2), and described planting tank (3) and described storage tank The bottom of the water tank (2) is connected. 2. The roof water storage and greening structure according to claim 1, characterized in that the height of the water storage tank (2) is smaller than the height of the planting tank (3). 3. The roof water storage and greening structure according to claim 2, characterized in that, vegetation (1), planting soil layer (4), filter layer (6) are sequentially arranged in the planting tank (3) from top to bottom ), a water storage layer (5), a filter layer (6), a drainage layer (7), an isolation layer (8), a root puncture-resistant waterproof layer (9), and a waterproof layer (10). 4. The green roof water storage structure according to claim 3, characterized in that the height H of the water storage tank (2) is not higher than the height h of the water storage layer (5). 5. The roof water storage and greening structure according to any one of claims 1-4, characterized in that, it also includes a water replenishment device (11), and the pipeline outlet of the water replenishment device (11) is located in the water storage tank (2 ) above. 6. The roof water storage and greening structure according to claim 5, characterized in that a cover plate is arranged on the top of the water storage tank (2). 7. The roof water storage and greening structure according to claim 1, characterized in that, it also includes a drainage groove (12), and the drainage groove (12) is formed by the barrier between the parapet (13) and the water storage groove (2). A water wall (14) is formed, a drainage pipeline (15) is arranged at the bottom of the drainage groove (12), and a rainwater outlet (16) is arranged at the top of the drainage pipeline (15). 8. The roof water storage greening structure according to claim 3 or 4, characterized in that, the water storage layer (5) is made of a water storage material, and the water storage material is provided with filter layers (6) up and down. ), the water-storing material is composed of any one or more of pebbles, ceramsite, sand, and gravel. 9. The roof water storage and greening structure according to claim 3 or 4, characterized in that, the water storage layer (5) is a drainage board, and the number of the drainage boards is not less than one, and the water storage layer (5) The thickness is not less than 80mm. 10. The roof water storage and greening structure according to claim 8, characterized in that, the thickness of the water storage layer (5) is 80 mm to 300 mm; the thickness of the drainage layer (7) is 5 mm to 50 mm.