36 results about "Green roof" patented technology

A paver pedestal system is a versatile solution for elevated outdoor flooring, commonly used in rooftop terraces, plazas, and green roofs. However, wind uplift poses a significant threat to the stability of such systems, especially in high-wind areas. To mitigate this risk, paver pedestal systems are designed with enhanced features, such as mechanical fasteners, perimeter restraints, and interlocking pavers. These features ensure that pavers remain securely in place during strong winds. Additionally adhesive bonding methods are sometimes employed to further stabilize the structure. By combining these design elements, modern paver pedestal systems offer effective wind uplift protection while maintaining easy installation, drainage efficiency, and aesthetic appeal. This approach not only safeguards against potential damage but also extends the lifespan of rooftop surfaces, ensuring durability and safety in varying environmental conditions.

The utility model relates to the technical field of sponge city construction, in particular to a sponge city green roof embedded type purification module which comprises a bottom frame box, a purification assembly is arranged on the inner side of the bottom frame box, and a disassembly and assembly assembly is arranged on the outer side of the bottom frame box. The purification assembly comprises a purification box, a filter screen, a biochar composite matrix layer and a zeolite filter layer; the purification box, the filter screen, the biochar composite matrix layer and the zeolite filter layer are sequentially arranged on the inner side of the bottom frame box from top to bottom, the purification box is detachably connected with the bottom frame box, according to the purification assembly, the filter screen filters impurities in rainwater, the biochar composite matrix layer adsorbs organic matter and a modified biochar matrix, and the zeolite filter layer is detachably connected with the bottom frame box. Ions in the zeolite filter layer are exchanged to remove trace elements in the rainwater, so that the rainwater is purified by the purification box in the mounted state, the rainwater purification effect is effectively improved through the structure, and the disassembly and assembly assembly is convenient for separately disassembling, assembling and replacing the purification box.

A tray (10) for use in a green roof system has a floor (12) and four sides (14) and is moulded from a plastics material. At the centre of, and towards the base of each side wall, there is a circular hole / orifice (20) for use in connecting the interior of one tray with an adjacent tray. The trays may be connected together using male (24) and female (30) connectors and used particularly on roofs for temporary (or more permanent water storage and as a planting box for a green roof. The trays (10) may be linked together by fluid flow connectors (50) which include a short length of piping / tubing linking the holes of adjacent trays for fluid flow between trays. Connectors which block passage of fluid between two adjacent trays are also provided. A further connector which has a partial passage including a dam wall is also provided. The trays (10) can be connected to form a reservoir on the roof of a building with the connectors being used to control the flow of water e.g blocking the passage of water on downhill slopes.

The invention discloses a green roof device integrated with a rainwater recycling function, and relates to the field of roof water collection, the green roof device comprises a roof, a water collection tank is fixed to one side of the roof, a plurality of water collection pipes are fixed to the bottom of the water collection tank, a fallen leaf baffle is fixed to the top of the roof, and a water permeable plate is fixed to the side, close to the water collection tank, of the fallen leaf baffle; the water permeable plate is located between the roof and the fallen leaf baffle, a water tank cleaning mechanism is arranged in the water collecting tank, and an auxiliary cleaning mechanism is arranged on the fallen leaf baffle. Wind power generated in strong wind weather drives the water tank cleaning mechanism, the water tank cleaning mechanism moves in the water collecting tank, the water tank cleaning mechanism drives the auxiliary cleaning mechanism, and the auxiliary cleaning mechanism enables fallen leaves on the fallen leaf baffle to move towards the water collecting tank, so that the continuity and the water quality of rainwater collection are remarkably improved; the blocking risk and the manual maintenance cost of long-term operation of the system are reduced, and the practicability and the reliability of the device are enhanced.

The invention provides a modular plant planting system for roof greening and a special matrix, relates to the technical field of roof greening and rainwater runoff purification, and shows a roof rainwater purification and planting system complex under the combined action of a modular combination mechanism with a stereoscopic and unique wall surface and a roof greening and rainwater purification system. Intensive greening landscapes can be built, a large-scale roof ecological system can also be built, and the whole system has the multiple functions of landscape display, ecological restoration, efficient space utilization and the like. A user can flexibly increase the combination number of the supporting connecting bases and the fixing bases, and the scale of the device can be freely adjusted to meet the planting requirements in different seasons. According to the special substrate for the roof greening plant planting system, pollutants in rainwater runoff can be adsorbed and recycled, a complex which has development potential and is used for landscape leisure, roof greening planting, rainwater runoff purification, carbon sequestration and emission reduction and building temperature reduction is built, and the system with the dual functions of roof greening and purification is ingeniously applied.

This invention discloses a method and device for optimizing and controlling the hydrothermal environment of green roofs based on modified matrix synergy, belonging to the field of green building technology. The method involves acquiring meteorological parameters and roof structure requirements of the target area to determine the hydrothermal control objectives, and customizing a modified matrix formula composed of garden soil, gravel, and wood chip biochar, pretreated for porosity optimization. A layered structure is constructed, and sensors collect data such as matrix moisture content, roof temperature, and rainfall intensity in real time. Based on a coupling algorithm, the porosity and height of the water storage and drainage layer are dynamically adjusted to achieve hydrothermal control through the synergistic effect of the modified matrix's water retention and thermal insulation properties and vegetation evapotranspiration. The control effect is periodically evaluated, and the matrix ratio and water storage and drainage layer parameters are iteratively updated. The device employs an intelligent modular adjustable ventilated water storage and drainage layer, with built-in sensors and a drive motor, and a distributed data acquisition and control module to achieve intelligent control. This invention solves the problems of poor adaptability and weak hydrothermal control capabilities of traditional green roofs.

The invention belongs to the technical field of prevention, drainage and water storage, and discloses a planting roof drainage and water storage system which comprises an intelligent drainage module, an intelligent water storage module, an environment monitoring and regulating module and a plant growth assisting module. The intelligent drainage module, the intelligent water storage module, the environment monitoring and regulation module and the plant growth assisting module cooperate with one another, and intelligent management of the planting roof water prevention, drainage and storage process and optimization of the plant growth environment are achieved. Through mutual cooperation of the intelligent drainage module, the intelligent water storage module, the environment monitoring and regulation module and the plant growth assisting module, comprehensive intelligent management of the planting roof water prevention, drainage and storage process and precise optimization of the plant growth environment are achieved. In practical application, each module dynamically adjusts the operation state according to data monitored in real time, and the defect that each part of a traditional planting roof system operates independently and is lack of collaboration is avoided.

The invention relates to the technical field of green buildings, and particularly discloses an adjustable ventilation green building roof structure which comprises a roof assembly which comprises a bearing body, a first top plate and a second top plate, and the first top plate and the second top plate are connected to the top of the bearing body; the angle-adjustable photovoltaic module is mounted at the top of the first top plate; the green plant assemblies are mounted on the first top plate and the second top plate; the ventilation assembly is arranged on the first top plate and corresponds to the photovoltaic assembly; the air guide assembly is mounted in the bearing main body; the first top plate and the second top plate almost completely cover the modularized green plant assemblies, the roof greening area is maximized, the green plant assemblies are arranged in a modularized mode, air flowing is facilitated at the bottoms of the photovoltaic assemblies and the bottoms of the green plant assemblies, solar radiant heat is effectively isolated, meanwhile, local high-temperature points are reduced, and the service life of the roof is prolonged. Through the combination of the ventilation assembly and the air guide assembly, controllable ventilation in the building is carried out, and a sustainable, low-maintenance and high-benefit green roof solution is provided for the building.

The utility model provides an assembly type roof green plant roof plate for a green building, and belongs to the technical field of green buildings. The fabricated roof green plant roof slab for the green building comprises a green plant roof slab main body, the green plant roof slab main body comprises an auxiliary supporting plate, a threading hole, a servo motor, a green plant frame, a plant culture groove, a fixing base, a water pump and rotating rollers, and the auxiliary supporting plate is arranged at the top end of the green plant roof slab main body. According to the sunlight direction, a servo motor is turned on to drive a rotating roller to rotate, so that green plants on the surface of the green plant frame are conveniently inclined, photosynthesis can be better performed, and meanwhile, when the green plant frame is inclined, a water pump pumps water in a water tank to spray the green plants, so that the green plants are more convenient to use. Plants in the plant cultivation grooves can grow better, and the angle of the green plant frame of the green plant roof plate body can be adjusted more conveniently.

Method of providing a growing medium (4) for a green roof (5) on a roof of a building (3), comprising the steps of: • - mixing mineral wool and a solvent to form a growing suspension (2); • - providing the growing suspension (2, 8) on a roof (5) of the building (3); and • - letting the growing suspension (2, 8) rest on the roof (5) of the building (3) such that the mineral wool settles on the roof (5).

A system is provided.SOLUTION: A system for converting underutilized roof space into a sustainable green-rich ecosystem, comprising: means for receiving information from a user regarding roof location, area, budget, and preferences; means for storing the received information in a database; means comprising a generative AI model for generating optimal green roof designs based on the stored information; and means for providing the generated designs to the user.SELECTED DRAWING: Figure 1

This invention discloses a prefabricated green building, comprising a base slab, several wall panels, a green roof, and a ring beam. The green roof comprises several prefabricated slabs assembled sequentially, with planting troughs formed on each slab. A connecting device is provided between each wall panel and the base slab. A collection box is detachably connected to the prefabricated slab, with multiple water inlet pipes connected to one side of the collection box. Multiple grooves for placing the water inlet pipes are formed on the top wall of the planting trough, with the end of the water inlet pipe furthest from the collection box connected to the inner cavity of the planting trough. A water pump is installed on the top of the planting box, with a water inlet connected to a water pump pipe. The end of the water pump furthest from the pump is connected to the inner cavity of the collection box, and the water outlet of the pump is connected to a water supply pipe with multiple nozzles facing the planting trough. This invention facilitates the collection of rainwater above the soil layer in the planting trough, thereby facilitating irrigation of the plants and reducing water waste.

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.

The application discloses a kind of green roof structures of preventing plant root system damage, it is related to green roof technical field, including mesh slot, extension plate, lifting piece, root resistance layer, drainage layer, filter layer, livestock water layer, cultivation substrate layer, vegetation layer, drainage layer, filter layer, livestock water layer, cultivation substrate layer, vegetation layer are sequentially laid in mesh slot, the lower of mesh slot is equipped with root resistance layer, root resistance layer is laid on roof, the outside upper end of mesh slot is equipped with extension plate, and extension plate is connected with roof by lifting piece.The application can prevent plant root system damage building roof.

The utility model discloses a water storage type planting frame and planting device suitable for slope roof sponge city construction. The water storage type planting frame and planting device comprises a planting lattice, a water outlet is formed in the middle upper portion of the right side face of the planting lattice, a supporting plate is horizontally arranged in the planting lattice and close to the top, a planting area is arranged above the supporting plate, and a water storage cavity is arranged below the supporting plate. A flow guide plate is obliquely arranged on the right side in the water storage cavity, the top end of the flow guide plate is fixed to the right side wall between the supporting plate and the water outlet, a drainage baffle extending vertically is arranged at the bottom of the flow guide plate, and a drainage channel is defined by the drainage baffle, the right side wall, the flow guide plate and the other two side walls of the planting lattices. A filtering structure is arranged in the drainage channel, and the water outlet is communicated with a drainage pipe. The building requirements of sponge cities on green roofs can be met, the building control indexes are met, rainwater can be recycled conveniently, and meanwhile normal drainage of roofs is not affected during heavy rain.

The application relates to a device and a method for measuring the thermal conductivity coefficient of roof greening, which comprises a closed test chamber, a heater (1) arranged at the top of the closed test chamber, a water sample contrast module (6) arranged at the bottom of the closed test chamber, and temperature sensors arranged on the upper and lower surfaces of the water sample contrast module (6) and a roof greening or wall greening module (3) to be tested. The closed space is heated by a non-contact heater in a hot air diffusion mode, the roof greening module to be tested and the water sample contrast module with the same specification are placed on the bottom ground of the closed space, the heat is conducted downward, and when the temperature difference between the upper and lower surfaces of the roof greening reaches stability, the thermal conductivity coefficient of the roof greening can be calculated by referring to the known water sample contrast. Compared with the prior art, the application avoids the damage of a heat source to plants, only needs to record the temperature difference between the upper and lower surfaces of the test sample in a steady state during the test, and can be applied to the measurement of the thermal conductivity coefficient of various non-homogeneous and complex structure materials.

The utility model provides a rainwater treatment system for a sponge city. The rainwater treatment system comprises a concave green land structure, a green roof structure and a rainwater collection pool. The sunken greenbelt structure comprises a foundation pit, an anti-seepage film, a water seepage surface layer, a gravel drainage layer, an overflow well, a rainwater grate and a drainage pipe. The foundation pit comprises a water storage pit and a drainage pit, and the gradient of the two sides of the drainage pit is larger than that of the water storage pit. And the impermeable film is laid on the water storage pit and the drainage pit. And the gravel drainage layer is filled in the drainage pit. The water seepage surface layer is filled in the water storage pit, and the water seepage surface layer is concave at the drainage pit and forms a reservoir. The overflow well is arranged in the foundation pit, and the rainwater grate is arranged at the top of the overflow well. The drainage pipe is arranged in the gravel drainage layer and communicated with the overflow well, and a plurality of water inlet holes are formed in the peripheral side of the drainage pipe. The green roof structure is used for being arranged on a roof. The rainwater collecting pool is connected to the overflow well and the green roof structure and used for collecting rainwater. The rainwater treatment system for the sponge city can be used for widely collecting rainwater.

The application discloses a low-carbon and energy-saving building green roof, and belongs to the technical field of buildings. The building green roof comprises a roof board, a water storage tank arranged on the roof board and used for adjusting the temperature of the roof board, a heat collecting plate fixedly arranged on the top surface of the water storage tank and used for adjusting the temperature of the water storage tank, symmetrical slidingly arranged on the roof board and used for covering the heat collecting plate so as to adjust the illumination of the heat collecting plate, a circulating unit arranged on the roof board and used for circulating the liquid in the water storage tank and the drainage pipe, and a driving assembly arranged on the roof board and used for driving two solar panels to move away from or close to each other. The two solar panels are fixedly arranged on the upper side and the lower side of a toothed belt rotatably arranged on the roof board, so that the temperature in the room is effectively adjusted, and the energy emission and the energy consumption are further reduced.

The invention relates to the technical field of rainwater drainage, in particular to a rainwater drainage system with an overflow function, which comprises a rainwater drainage foundation, a water collecting pipe, a perforated collecting pipe and a water outlet pipe, the rainwater drainage foundation is sequentially provided with a rammed earth layer, an anti-seepage geomembrane, a gravel drainage layer, a gravel layer, a soil replacing and filling layer, a covering layer and a deep stagnant water layer from bottom to top; a water collecting pipe vertically penetrates through the rainwater drainage foundation, a water grating barrel is arranged on the top of the water collecting pipe, and an overflow opening is formed in the top of the water grating barrel. A plurality of perforated collecting pipes are arranged in the gravel drainage layer at the waist part of the water collecting pipe, the perforated collecting pipes are vertically connected with upward blind pipes, and backwashing openings are formed in the pipe ends, extending out of the top surface of the rainwater drainage foundation, of the blind pipes. The system has the beneficial effects that the system is suitable for the fields of urban rainwater management, ecological wetland construction, rainwater gardens, green roofs and the like, and the functions of efficient collection, purification, discharge utilization and overflow prevention of rainwater are achieved.

The urban sponge body comprises an enclosing wall, a green roof system, a drainage pipe and an underground reservoir and has the advantages that the drainage pipe can be prevented from being affected by extrusion, friction and the like of materials of all structural layers due to the fact that a sleeve assembly is arranged, a driver is started by a person according to the pipe diameter of the drainage pipe, and the drainage pipe can be driven by the person. The connecting frame can drive the connecting block to displace along with the displacement of the penetrating block and further drive the enclosing frame to displace along the direction when the penetrating block displaces due to the flexibility of the telescopic frame and the matching of the stretching force or the compression force applied to the connecting frame when the penetrating block displaces, so that the length of the enclosing frame annularly clamped on the periphery of the drainage pipe is adjusted; and the acting force of the enclosing frame on the periphery of the drainage pipe can be conveniently controlled, so that the enclosing frame has an effect of fastening or loosening the drainage pipe, and when the drainage pipe needs to be maintained or replaced, personnel operation is more convenient.

The utility model relates to a structure for applying a self-adhesive waterproof roll to a planting top plate. The structure sequentially comprises a waterproof concrete base layer (1), a leveling layer (2), a prefabricated double-layer root-puncture-resistant self-adhesive waterproof roll (3), a siphon seepage and drainage system (4), a planting soil layer (5) and a vegetation layer (6) from bottom to top. According to the prefabricated double-layer root-puncture-resistant self-adhesion waterproof coiled material, the polymer film base is adopted as a matrix to be prefabricated and compounded, and the design effect that one waterproof layer can meet the two waterproof requirements of the root-puncture-resistant waterproof coiled material is achieved; the polymer film matrix has excellent extension performance and can effectively absorb stress generated by deformation and cracking of the reinforced concrete top plate, the 2 + 1 occlusion type lap joint edge design is adopted, pull-off cracks cannot be generated at the lap joint part, the bonding effect of the lap joint edge is more reliable, and the skin type bonding mode is adopted, so that the service life of the reinforced concrete top plate is prolonged. And open fire operation is effectively eradicated, the construction period is shortened, and the comprehensive cost is reduced.

A green roof system includes a support, plant growth modules, and a plurality of bifacial orientable photovoltaic panels arranged above the plant growth modules. Each of the plant growth modules includes a sealing membrane and a multilayer culture complex successively comprising at least a first fibrous synthetic material and a flexible mesh.

The invention relates to a green roof structure with a rainwater collection function and a construction method thereof.The green roof structure comprises a house body, the house body is provided with an inclined roof part, the side wall of the house body is provided with a confluence part, the confluence part is provided with a confluence groove, the confluence part is provided with a drainage pipe and a water collection pipe, and the bottom of the confluence groove is provided with a drainage box; a communicating channel is arranged at one end, close to the bottom of the converging groove, of the drainage box, the drainage box is provided with a sliding groove, the elastic piece is provided with a sliding block, the sliding block slides in the drainage box, and the sliding block is provided with a first communicating pipe and a second communicating pipe. According to the application, the drainage pipe and the water collecting pipe are arranged, and the first communicating pipe and the second communicating pipe are indirectly controlled to move through the sliding block by means of the rain vigor, so that rainwater scouring the pitched roof enters the drainage pipe together with broken stones and impurities during raining; at the moment, rainwater with few gravels and impurities enters the water tank, and follow-up water use is facilitated.

The application belongs to the technical field of building materials, and discloses a self-adaptive nutrient slow-release aggregate, a preparation method and application thereof. The self-adaptive nutrient slow-release aggregate has a core-shell structure, and the mass ratio of the core to the shell is (4-6):1. The core comprises raw materials in the following mass percentages: potassium-magnesium phosphate cement 45-60%, sludge 20-30%, biomass waste 10-20%, nutrient substance 2-5%, and solid waste admixture 5-10%. The shell comprises raw materials in the following mass percentages: potassium-magnesium phosphate cement 70-90%, waste thermal shrinkage particulate matter 5-20%, and solid waste admixture 5-10%. The self-adaptive nutrient slow-release aggregate is prepared by using potassium-magnesium phosphate cement and various solid wastes as main components and adding nutrient substances required by plants, and has a core-shell structure, so that the core is rich in pores for storing nutrients, and the shell can self-adaptively control mass transfer. The self-adaptive nutrient slow-release aggregate is particularly suitable for a substrate layer of a green roof.

The utility model discloses a green roof vegetation planting structure which comprises a vegetation groove, partition plates are arranged at the corners of the vegetation groove, water diversion mechanisms are arranged in the partition plates, and water storage tanks are arranged on the inner sides of the corners of the vegetation groove. As long as water exists in the water storage tank, water can be continuously permeated and supplemented into the vegetation groove, the process of manual irrigation or irrigation pipeline laying for irrigation is omitted, manpower cost and money cost needed by green roof irrigation are saved, the water seepage speed of the water storage tank into the vegetation groove is controlled through the density material of the separation sponge and the like, and the water seepage efficiency is improved. Therefore, the water storage tanks can continuously supplement water to the soil layer of the planting mechanism, automatic continuous irrigation is achieved, the separation sponges can prevent soil in the vegetation grooves from entering the water storage tanks, the water storage tanks are kept in a clear state, the water storage tanks are communicated together through the communicating pipes, and the same water level can be kept in the water storage tanks.

The present invention relates to a vegetated assembly (0) for a roof (11) comprising: - a basin (1) adapted to collect and store water; - a structure (2) disposed in the impermeable basin (1), comprising at least one basket (21) for receiving plants (22); - a system (4, 41, 6, 61, 7, 8, 81, 9, 10) for managing the water stored in the basin (1), - an irrigation system (5) for each basket (21) in fluidic communication with an irrigation channel (4), the irrigation channel (4) being in communication with a recovery channel (6) for the water stored in the basin (1); The system (4, 41, 6, 61, 7, 8, 81, 9, 10) for managing the water stored in the basin (1) is configured to: a) draw water from the basin (1) and convey it to the irrigation system (5); b) discharge a quantity of stored water. Figure for the abstract: Fig. 1

The application provides a remote sensing image green roof intelligent identification method and system based on an improved Mask RCNN algorithm, introduces an attention mechanism to enhance the feature extraction capability of the algorithm, constructs a joint loss function to improve the edge segmentation accuracy of the target, and realizes accurate detection of the green roof in a complex built environment. The application synchronously integrates a morphological parameter analysis module, can automatically extract geometric feature parameters such as the area, the circumference and the shape index of the green roof, realizes integrated processing of green roof identification and feature parameter extraction, and effectively solves the problems of difficult target instance differentiation and poor environmental adaptability compared with traditional methods, and provides a reliable technical means for monitoring and ecological environment benefit evaluation of the green roof.

This utility model belongs to the field of green roofs, and in particular, it is an embedded drainage channel for large green roofs. Addressing the problems of existing drainage channels being prone to clogging, soil loss, and lacking shock absorption measures, the following solution is proposed: It includes a base, an outer frame, and an inner frame. The outer frame is slidably connected to the inner walls on both sides of the base. An elastic block is provided between the bottom inner wall of the base and the bottom of the outer frame. The inner frame is located inside the outer frame. Water-absorbing isolation layers are provided between the inner walls on both sides of the outer frame and the sides of the inner frame. The top of the outer frame has a cover connected by a snap-fit. This utility model effectively reduces shock, improves the service life and drainage performance of the drainage channel, enhances structural safety, prevents soil loss and drainage channel clogging, maintains the thickness of the planting layer and the plant growth environment, facilitates assembly and disassembly, simplifies the maintenance and replacement process, and improves work efficiency.

The invention discloses a green roof and thermoelectric air conditioner coordinated building integrated system and a control method. A green roof and a thermoelectric air conditioner are organically combined; an outdoor heat dissipation unit (water cooling plate heat exchanger) of a thermoelectric air conditioner module is integrally embedded in a closed or semi-closed interlayer space formed between a building roof structure layer and a green roof waterproof layer in a non-exposed mode, and the interlayer is subjected to the sun shading and evaporative cooling effects of the green roof above. A low-temperature buffer microclimate zone with the temperature obviously lower than that of outdoor air is formed, and the unfavorable heat dissipation environment of a green roof is fundamentally converted into the advantage of efficient heat dissipation. In addition, a switchable double-loop structure is formed by the water circulation module, and maximum value utilization of limited water resources is ensured.

The utility model discloses a roof drainage structure of a green roof construction steel structure, and relates to the technical field of green roof construction, the roof drainage structure comprises a steel structure roof mechanism, the steel structure roof mechanism comprises a roof, and parapet walls are arranged on the periphery of the top of the roof; and the drainage mechanism comprises a supporting piece, and a main drainage groove is formed in one side of the supporting piece. According to the three-dimensional drainage network formed by the main drainage grooves, the auxiliary drainage holes and the auxiliary drainage grooves, when rainfall is little, rainwater permeates through the planting cushion material and the supporting plate and is drained along the main drainage grooves under flow guide of the inclined faces of the supporting pieces, and when the rainfall is large, the main drainage grooves are filled with the rainwater and overflow to the surfaces of the supporting pieces, so that the rainwater is drained out of the supporting pieces. Auxiliary drainage is carried out through the auxiliary drainage grooves, rainwater can flow into the confluence grooves along the auxiliary drainage grooves, the drainage effect is better, meanwhile, the precise drainage design of the planting groove drainage openings and the heightened aisles is matched, rainstorm weather can be effectively coped, the ponding risk is avoided, and the drainage efficiency is improved.