Granite tailing concrete green energy-saving roof structure

Abstract

The utility model belongs to the field of energy conservation of green buildings, and particularly relates to a granite tailing concrete green energy-saving roof structure. The structure is sequentially composed of a steel bar-granite tailing concrete structure layer, a phase change cement mortar-calcium silicate board heat preservation layer, a granite tailing cement mortar leveling layer, a root puncture resistant waterproof layer, a water drainage and storage layer, a polyester non-woven fabric filter layer, a substrate layer, a vegetation layer, a rainwater collection-automatic irrigation device and a photovoltaic power generation device from bottom to top. The rainwater collection-automatic irrigation device is composed of a water storage system, a water supply system and a spraying device, and efficient utilization of rainwater is achieved. By means of the green roof design, energy consumption can be reduced, the urban heat island effect can be relieved, roof rainwater runoff is reduced while temperature control is provided and the service life of the roof surface is prolonged, and the system plays a positive role in relieving the urban inland inundation problem; industrial solid waste-granite tailings are combined to serve as concrete and mortar aggregate, so that the cyclic utilization rate of resources is increased, and a new idea is provided for achieving the aim of carbon emission reduction.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of green building energy saving, concretely relates to a kind of granite tailings concrete green energy-saving roof structure. BACKGROUND

[0002] With the densification of urban construction, the vegetation area gradually decreases, the water permeability of ground decreases, about 70% of rainwater forms runoff, and about 30% of rainwater seeps into the ground, which may cause urban waterlogging, water resource waste and other problems. Traditional roofs are mainly made of hard materials such as concrete and asphalt. These materials not only have strong heat conduction, leading to increased building energy consumption, but also are prone to water accumulation during the rainy season, increasing the load on the building.

[0003] China has abundant granite reserves, but more than 10 million tons of granite tailings are produced each year from the processing of granite. If the waste tailings are not effectively treated, they can only be stacked or landfilled. Large amounts of stacked granite tailings not only occupy land and pose a safety hazard, but also pollute the environment and waste resources. If granite tailings are used as aggregate to prepare concrete, the demand for building materials can be reduced, resource consumption and environmental damage can be reduced, and effective use of granite resources can be achieved.

[0004] The green energy-saving roof structure can achieve efficient use of resources and effective reduction of energy consumption by comprehensively using strategies such as infiltration, retention, storage, purification, use, and drainage, and combining measures such as waste resource utilization, renewable energy, and green planting. SUMMARY

[0005] To solve the above technical problems, the purpose of the utility model is to provide a kind of granite tailings concrete green energy-saving roof structure to solve rainwater runoff, energy consumption and other problems;The specific technical solutions are as follows:

[0006] A kind of granite tailings concrete green energy-saving roof structure is composed of steel bar-granite tailings concrete structure layer, phase change cement mortar-silicate board insulation layer, granite tailings cement mortar leveling layer, root penetration resistant waterproof layer, drainage and storage layer, polyester non-woven fabric filter layer, substrate layer and vegetation layer, rainwater collection-automatic irrigation device and photovoltaic power generation device.

[0007] The steel bar-granite tailings concrete structure layer is composed of roof panel and surrounding retaining wall, and the upper end of the steel bar-granite tailings concrete structure layer is sequentially provided with phase change cement mortar-silicate board insulation layer, granite tailings cement mortar leveling layer, root penetration resistant waterproof layer, drainage and storage layer, polyester non-woven fabric filter layer, substrate layer and vegetation layer.

[0008] The rainwater collection-automatic irrigation device is composed of a water storage tank, a water pump, a filter device, a pressure regulator, an electromagnetic valve, a soil humidity sensor and a sprinkler.

[0009] The water pump and the water delivery pipeline form a water storage system; the water storage system delivers rainwater to the water storage tank for storage through the water pump and the water delivery pipeline.

[0010] The water delivery pipeline, the water pump, the filter device, the pressure regulator and the electromagnetic valve form a water supply system.

[0011] The filter device is composed of a filter, a drain valve and a drain pipe; the drain pipe is connected to the filter, and the drain valve is arranged on the drain pipe.

[0012] The water storage tank is provided below the water pump, one end of the water delivery pipeline is connected to the water pump, the water outlet of the water storage tank and the filter, and the other end is connected to the sprinkler; the pressure regulator, the electromagnetic valve and the soil humidity sensor are arranged on the water delivery pipeline from right to left.

[0013] The photovoltaic power generation device is composed of a controller, an electricity storage tank and a solar panel.

[0014] The water storage tank and the electricity storage tank are arranged on the inner side of one of the side retaining walls, and the controller is arranged above the water storage tank.

[0015] The electricity storage tank is connected to the solar panel, the controller and the automatic irrigation device, and the solar panel is arranged on the two side retaining walls by means of an H-shaped connecting piece.

[0016] The soil humidity sensor and the sprinkler are buried in the substrate layer and connected to the water delivery pipeline and the controller; thus, the water supply system can automatically irrigate according to the soil humidity, preventing the substrate layer from being disabled due to insufficient water.

[0017] The water storage tank is provided with a drain valve and a drain pipe at the bottom and connected to the urban rainwater management system.

[0018] The water storage tank is connected to the water storage system, the water supply system and the controller.

[0019] The preferred scheme of the granite tailings concrete green energy-saving roof structure is that the steel-reinforced granite tailings concrete structure layer is prepared by using granite tailings as aggregate, and is poured into a prefabricated steel reinforcement to form, wherein the granite tailings replace 50% of natural coarse aggregate and 50% of fine aggregate, the yield strength standard value of the steel is 300 MPa, the thickness of the roof panel is 120-160 mm, and the granite tailings are an industrial waste, mainly composed of SiO2 and Al2O3, and have excellent mechanical properties and durability.

[0020] The preferred scheme of the green energy-saving granite tailings concrete roof structure is that the phase change cement mortar-silicate board insulation layer is formed by stacking the phase change cement mortar layer and the silicate board, the phase change aggregate adopts PMMA material as the micron-level capsule shell to encapsulate n-tetradecane, the phase change aggregate replacement sand rate is 20%, the phase change point is 5 DEG C, the latent heat value is 120 kJ / kg, and the phase change cement mortar layer thickness is 10mm-20mm, which can reduce the sensitivity to temperature.

[0021] The silicate board is a new type of inorganic building material made of siliceous material, calcareous material, reinforcing fiber material, and additives in a certain proportion through processes such as mold pressing and autoclaved curing, which is waterproof, heat-insulating, and corrosion-resistant, has a C5 grade impact strength, and a R5 grade flexural strength, and has a thickness of 12mm-15mm.

[0022] The preferred scheme of the green energy-saving granite tailings concrete roof structure is that the granite tailings cement mortar leveling layer uses industrial solid waste granite tailings as fine aggregate to replace sand, and has a thickness of 20mm.

[0023] The preferred scheme of the green energy-saving granite tailings concrete roof structure is that the root penetration resistant waterproof layer has two layers of defense, the lower layer is SBS modified asphalt waterproof coiled material with a thickness of 4mm, and the upper layer is polyvinyl chloride double-sided composite waterproof coiled material with a thickness of 1.5mm-2mm.

[0024] The preferred scheme of the green energy-saving granite tailings concrete roof structure is that the water drainage and storage layer is composed of water drainage and storage plates and air slots, and the water drainage and storage plates are distributed at intervals, the water drainage and storage plates are in the shape of conical convex points, the air slots are filled with ceramsite, the ceramsite has a particle size of 5mm-10mm and a bulk density of not more than 500kg / m3, the water drainage and storage plates have a thickness of 10mm-20mm, the filter material is polyester non-woven fabric with a unit mass of not less than 200g / m2 and a thickness of 2mm-3mm.

[0025] The preferred scheme of the green energy-saving granite tailings concrete roof structure is that the substrate layer is improved composite soil composed of 1:1:1:1 of farmland soil, grass charcoal, pine needle soil, and perlite, and has a thickness of 20mm-30mm, and the planting layer is perennial herbaceous plant Sagina japonica.

[0026] The preferred scheme of the green energy-saving granite tailings concrete roof structure is that the water supply pipeline and the water delivery pipeline are made of PVC pipe, the water storage tank is made of stainless steel, the length of the water storage tank is not more than 2 / 3 of the width of the roof, the width of the water storage tank is consistent with the length, and the height of the water storage tank is not more than 1 / 3 of the length of the water storage tank.

[0027] The preferred scheme of the green energy-saving roof structure of the granite tailings concrete is that the solar panel core component adopts monocrystalline silicon cell pieces, and the conversion efficiency is 15%-24%, so that the automatic irrigation system of the roof can normally operate, and energy is saved and the environment is protected.

[0028] The specific use mode of the automatic irrigation of the green energy-saving roof structure of the granite tailings concrete is as follows: when the environment is in a rainy day, rainwater is deposited, filtered, absorbed and penetrated to the water storage and discharge layer through the vegetation layer and the filter layer; when the water storage and discharge layer is full, the water storage system transports the rainwater to the water storage tank for storage through the water pump and the water pipeline under the signal of the controller; when the water storage tank reaches the storage limit, the drain valve is automatically opened, and the excess water is discharged through the drain pipe; the drain pipe can also be connected to the rainwater management system of the city to realize efficient utilization of rainwater; when the humidity of the substrate layer is lower than a certain threshold, the soil humidity sensor sends a signal to the controller to drive the electromagnetic valve to be automatically opened, rainwater is pumped from the water storage tank by the water pump, sewage is discharged through the sewage pipe after being filtered by the filter, and the filtered rainwater is connected to the spraying device through the water supply pipeline for water replenishment; the water supply pressure is controlled by the pressure regulator to ensure the flow and spraying distance of the spraying device, and the electromagnetic valve is automatically closed when the water content is sufficient; and the photovoltaic power generation device stores the converted electric energy in the electricity storage box, which can be used as a power supply source of the roof system and a household load, energy is saved and the environment is protected.

[0029] Advantages

[0030] In the utility model, the use of the phase change material can reduce roof temperature fluctuation, the additional calcium silicate board can not only strengthen the roof heat insulation efficiency, but also has good waterproof and compression resistance, and the stability of the roof structure is enhanced; the roof green plants can reduce rainwater runoff and relieve the pressure of urban drainage, the transpiration effect can relieve urban heat island effect and reduce energy consumption; the rainwater collection and irrigation device can prevent plant water shortage and discharge excess water in time, realizes effective management and utilization of rainwater; the photovoltaic power generation device can ensure normal operation of the roof system, energy is saved and the environment is protected. In addition, the use of the industrial solid waste, i.e., granite tailings, promotes resource recycling. BRIEF DESCRIPTION OF DRAWINGS

[0031] Fig. 1 It is a schematic view of the green energy-saving roof structure of the granite tailings concrete;

[0032] Fig. 2 It is an internal schematic view of the green energy-saving roof structure of the granite tailings concrete.

[0033] In the figure: 1-steel-reinforced granite tailings concrete structural layer; 101-roof panel; 102-retaining wall; 2-phase change cement mortar-calcium silicate board insulation layer; 201-phase change cement mortar; 202-calcium silicate board; 3-granite tailings cement mortar leveling layer; 4-root penetration resistant waterproof layer; 5-water drainage layer; 501-water drainage board; 502-tart; 6-polyester non-woven fabric filter layer; 7-matrix layer and vegetation layer; 8-rainwater collection-automatic irrigation device; 801-water storage tank; 802-water pump; 803-filter; 804-pressure regulator; 805-solenoid valve; 806-soil moisture sensor; 807-sprinkler; 9-photovoltaic power generation device; 901-controller; 902-electricity storage box; 903-solar panel; 10-drainage valve; 110-drain pipe; 111-drainage pipe; 12-water supply pipeline; 13-water supply pipeline. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "transverse", "width", "upper", "lower", "left side", "right side", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0037] As Figs. 1-2 shown, the invention will be further described below in conjunction with the drawings in the present application, but should not be understood as limiting the above main scope of the present application to the following embodiments. Without departing from the above idea of the present application, various substitutions and changes can be made according to ordinary technical knowledge and conventional means in the art, and all should be included in the protection scope of the present application.

[0038] The application discloses a kind of green energy-saving roof structure of granite tailings concrete, including steel bar-granite tailings concrete structure layer 1, phase change cement mortar-calcium silicate board insulation layer 2, granite tailings cement mortar leveling layer 3, root penetration resistant waterproof layer 4, water storage layer 5, polyester non-woven fabric filter layer 6, substrate layer and vegetation layer 7, rainwater collection-automatic irrigation device 8 and photovoltaic power generation device group 9 are formed 9;

[0039] The steel bar-granite tailings concrete structure layer 1 is composed of a roof panel 101 and a retaining wall 102 around the roof panel 101, and the roof panel 101 has, from top to bottom, the phase change cement mortar-calcium silicate board insulation layer 2, the granite tailings cement mortar leveling layer 3, the root penetration resistant waterproof layer 4, the water storage layer 5, the polyester non-woven fabric filter layer 6, the substrate layer, and the vegetation layer 7.

[0040] The rainwater collection-automatic irrigation device 8 is composed of a water storage tank 801, a water pump 802, a filter 803, a pressure regulator 804, an electromagnetic valve 805, a soil moisture sensor 806, and a sprinkler 807.

[0041] The water pump 802 and a water delivery pipeline 13 form a water storage system, and the water storage system transports rainwater to the water storage tank 801 for storage through the water pump 802 and the water delivery pipeline 13.

[0042] The water delivery pipeline 12, the water pump 802, the filter device, the pressure regulator 804, and the electromagnetic valve 805 form a water supply system.

[0043] The filter device is composed of the filter 803, a drain valve 10, and a drain pipe 111, and the drain pipe 111 is connected to the filter 803, and the drain valve 10 is arranged on the drain pipe 111.

[0044] The water storage tank 801 is provided below the water pump 802, one end of the water delivery pipeline 12 is connected to the water pump 802, the water outlet of the water storage tank 801, and the filter 803, and the other end is connected to the sprinkler 807; the pressure regulator 804, the electromagnetic valve 805, and the soil moisture sensor 806 are arranged on the water delivery pipeline 12 from right to left.

[0045] The photovoltaic power generation device 9 is composed of a controller 901, a power storage tank 902, and a solar panel 903.

[0046] The water storage tank 801 and the power storage tank 902 are arranged on the inner side of one of the retaining walls 102, and the controller 901 is arranged above the water storage tank 801.

[0047] The power storage tank 902 is connected to the solar panel 903, the controller 901, and the automatic irrigation device 8, and the solar panel 903 is arranged on the two retaining walls 102 by using an H-shaped connecting piece.

[0048] The soil humidity sensor 806 and the sprinkler 807 are buried in the substrate layer and connected with the water supply pipeline 12 and the controller 901, so that the water supply system can automatically irrigate by starting the electromagnetic valve 805 through the controller 901 according to the soil humidity, to prevent the substrate layer from being ineffective due to insufficient water;

[0049] The bottom of the water storage tank 801 is provided with a drain valve 10 and a drain pipe 110 connected with the urban rainwater management system.

[0050] The water storage tank 801 is connected with the water storage system, the water supply system and the controller 901.

[0051] The steel-reinforced granite tailings concrete structural layer 1 is prepared by using granite tailings as aggregate, and is poured into a prefabricated steel reinforcement to form, wherein the granite tailings replace 50% of natural coarse aggregate and 50% of fine aggregate, the yield strength standard value of the steel is 300 MPa, the thickness of the roof panel is 120-160 mm, and the granite tailings are an industrial waste with main components of SiO2 and Al2O3, and have excellent mechanical properties and durability.

[0052] The phase change cement mortar-silicate board insulation layer 2 is formed by stacking the phase change cement mortar layer 201 and the silicate board 202, the phase change aggregate uses PMMA material as a micron-level capsule shell to encapsulate n-tetradecane, the replacement rate of the phase change aggregate is 20%, the phase change point is 5℃, the latent heat value is 120 kJ / kg, and the thickness of the phase change cement mortar is 10-20 mm.

[0053] The silicate board 202 is a new type of inorganic building material made of siliceous material, calcareous material, reinforcing fiber material, and additives in a certain proportion through processes such as molding and autoclave curing, and has the advantages of waterproofing, heat insulation, corrosion resistance, impact strength grade C5, and bending strength grade R5, and the thickness of the silicate board is 12-15 mm.

[0054] The granite tailings cement mortar leveling layer 3 uses industrial solid waste granite tailings as fine aggregate to replace sand, and the thickness is 20 mm.

[0055] The root penetration resistant waterproof layer 4 has two layers of defense, the lower layer is SBS modified asphalt waterproof coiled material with a thickness of 4 mm, and the upper layer is polyvinyl chloride double-sided composite waterproof coiled material with a thickness of 1.5-2 mm.

[0056] The water storage layer 5 is composed of water storage plates 501 and empty grooves, and the two are distributed at intervals; the water storage plates 501 are in the shape of conical convex points, the empty grooves are filled with ceramsite 502, the particle size of the ceramsite is 5-10 mm, the bulk density is not more than 500 kg / m3, the thickness of the water storage plate is 10-20 mm, the filter material is selected to be polyester non-woven fabric, the unit mass is not less than 200 g / m2, and the thickness is 2-3 mm.

[0057] The matrix layer 7 is improved composite soil composed of garden soil, grass charcoal, pine needle soil and perlite in a ratio of 1:1:1:1, and the thickness of the bottom is 20-30 mm; the vegetation layer 7 is a perennial herbaceous plant.

[0058] The material of the water delivery component pipeline 12 is PVC pipe, the water storage tank 801 is made of stainless steel, the length of the water storage tank 801 is not more than 2 / 3 of the width of the roof, the width of the water storage tank 801 is similar to the length, and the height is not more than 1 / 3 of the length of the water storage tank 801.

[0059] The core component of the solar panel 903 adopts a single-crystal silicon cell, and the conversion efficiency is 15%-24%, so that the roof automatic irrigation system can normally operate, and energy saving and environmental protection are achieved.

[0060] A specific use mode of the granite tailings concrete green energy-saving roof structure automatic irrigation is as follows: when the environment is in a rainy day, rainwater will be deposited, filtered, absorbed and penetrated to the water storage layer 5 through the vegetation layer 7 and the filter layer 6; when the water storage layer 5 is full, the water storage system will deliver the rainwater to the water storage tank 801 for storage under the signal of the controller 901; the bottom of the water storage tank 801 is provided with a drain pipe 110, and the drain valve 10 will be automatically opened when the water storage tank 801 reaches the storage limit, and the excess water will be discharged through the drain pipe 110; the drain pipe 110 can also be connected to the urban rainwater management system to realize efficient use of rainwater; when the humidity of the matrix layer 7 is lower than a certain threshold value, the soil humidity sensor 806 will send a signal to the controller 901 to drive the electromagnetic valve 805 to be automatically opened, and the water pump 802 is used to extract rainwater from the water storage tank 801; after being filtered by the filter 803, the sewage will be discharged through the sewage pipe 111, and the filtered rainwater will be connected to the spraying device 807 through the water delivery pipeline 12 to be replenished; the pressure regulator 804 will control the water supply pressure to ensure the flow and spraying distance of the spraying device 807, and the electromagnetic valve 805 will be automatically closed when the water is sufficient. In the example, the photovoltaic power generation device 9 stores the converted electric energy in the power storage tank 902, which can be used as a power supply for the roof system and household load, and energy saving and environmental protection are achieved.

[0061] Any of the above technical solutions of the utility model discloses, if it discloses numerical range except declaration, then the numerical range disclosed is preferred numerical range, and any person skilled in the art should understand that: preferred numerical range is only the numerical value of obvious technical effect or representative numerical value among many implementable numerical values. Because there are many values, it is impossible to enumerate, therefore, the utility model discloses partial numerical value to illustrate the technical scheme of the utility model, and the above enumerated numerical value should not constitute the restriction of the protection scope of the utility model.

[0062] Meanwhile, the above utility model discloses or involves mutually fixed connecting parts or structural members if, except declaration, fixed connection can be understood as: detachable fixed connection, also can be understood as: the fixed connection of undetachable, of course, mutually fixed connection can be replaced by integral structure.

[0063] In addition, the above utility model discloses any of the technical solutions in the application of the term for indicating position relation or shape, except declaration, its meaning includes approximate, similar or close state or shape. Any component provided by the utility model can be assembled by a plurality of individual components, or can be a single component manufactured by one-piece forming process.

[0064] The above embodiment is only an example for clearly illustrating the utility model, and is not limited to the embodiment. For ordinary skilled person in the art, on the basis of the above description, other different forms of changes or changes can be made. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or changes derived therefrom are still within the protection scope of the utility model.

Claims

1. A green energy-saving roof structure of granite tailings concrete, comprising a steel-reinforced granite tailings concrete structure layer, a phase change cement mortar-calcium silicate board insulation layer, a granite tailings cement mortar leveling layer, a root penetration resistant waterproof layer, a water storage layer, a polyester non-woven fabric filter layer, a substrate layer and a vegetation layer, a rainwater collection-automatic irrigation device and a photovoltaic power generation device. The steel-reinforced granite tailings concrete structure layer is composed of a roof panel and a surrounding retaining wall, and the upper end of the roof panel is sequentially provided with the phase change cement mortar-calcium silicate board insulation layer, the granite tailings cement mortar leveling layer, the root penetration resistant waterproof layer, the water storage layer, the polyester non-woven fabric filter layer, the substrate layer and the vegetation layer. The rainwater collection-automatic irrigation device is composed of a water storage tank, a water pump, a filter device, a pressure regulator, an electromagnetic valve, a soil moisture sensor and a sprayer. The water pump and the water delivery pipeline constitute a water storage system; the water storage system transports rainwater to the water storage tank for storage through the water pump and the water delivery pipeline. The water delivery pipeline, the water pump, the filter device, the pressure regulator and the electromagnetic valve constitute a water supply system. The filter device is composed of a filter, a drain valve and a drain pipe; the drain pipe is connected to the filter, and the drain valve is arranged on the drain pipe. The water storage tank is provided below the water pump, one end of the water delivery pipeline is connected to the water pump, the water outlet of the water storage tank and the filter, and the other end is connected to the sprayer; the pressure regulator, the electromagnetic valve and the soil moisture sensor are arranged on the water delivery pipeline from right to left. The photovoltaic power generation device is composed of a controller, a power storage tank and a solar panel. The water storage tank and the power storage tank are arranged on the inner side of one of the side retaining walls, and the controller is arranged above the water storage tank. The power storage tank is connected to the solar panel, the controller and the automatic irrigation device, and the solar panel is arranged on the two side retaining walls by means of an H-shaped connecting piece. The soil moisture sensor and the sprayer are embedded in the substrate layer and connected to the water delivery pipeline and the controller. The water storage tank is provided with a drain valve and a drain pipe at the bottom and connected to the urban rainwater management system. The water storage tank is connected to the water storage system, the water supply system and the controller.

2. A green energy saving roofing structure of granite tailings concrete as claimed in claim 1, wherein, The thickness of the steel-reinforced granite tailings concrete structure layer is 120-160 mm.

3. A green energy saving roof structure of granite tailings concrete as claimed in claim 1, wherein, The phase change cement mortar-calcium silicate board insulation layer is formed by stacking a phase change cement mortar layer and a calcium silicate board, the thickness of the phase change cement mortar layer is 10-20 mm, and the thickness of the calcium silicate board is 12-15 mm.

4. A green energy saving roof structure of granite tailings concrete as claimed in claim 1, wherein, The root penetration resistant waterproof layer is divided into two layers, the lower layer is an SBS modified asphalt waterproof roll with a thickness of 4 mm, and the upper layer is a polyvinyl chloride double-sided composite waterproof roll with a thickness of 1.5-2 mm.

5. A green energy saving roofing structure of granite overburden concrete as claimed in claim 1 wherein, The water storage layer is composed of water storage plates and air slots, and the two are distributed at intervals, the water storage plates are in the shape of conical convex points, and the air slots are filled with ceramsite; the particle size of the ceramsite is 5-10 mm, the bulk density is not greater than 500 kg / m3, the thickness of the water storage plate is 10-20 mm, the filter material is polyester non-woven fabric with a unit mass of not less than 200 g / m2 and a thickness of 2-3 mm.

6. A green energy saving roofing structure of granite overburden concrete as claimed in claim 1 wherein, The thickness of the substrate layer is 20-30 mm, and the vegetation layer is a perennial herbaceous plant, i.e., aubrieta deltoidea.

7. A green energy saving roofing structure of granite tailings concrete as claimed in claim 1 wherein, The material of the water delivery pipe and the water delivery pipe is PVC pipe, the water storage tank is made of stainless steel, the length of the water storage tank is not more than 2 / 3 of the roof width, the width of the water storage tank is consistent with the length, and the height is not more than 1 / 3 of the length of the water storage tank.

8. A green energy saving roofing structure of granite overburden concrete as claimed in claim 1 wherein, The core component of the solar panel adopts a single crystal silicon cell, and the conversion efficiency is 15%-24%.

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