Underground roof drainage system and construction process

Abstract

The invention belongs to the technical field of buildings, and particularly relates to an underground roof drainage system. The waterproof and drainage assembly is arranged above the underground roof base layer, the waterproof and drainage assembly comprises a root puncture resistant waterproof layer and a composite protection drainage plate covering the root puncture resistant waterproof layer, and the composite protection drainage plate is formed by compounding a macromolecule protection drainage special-shaped piece and geotechnical cloth; the siphon drainage unit is arranged above the composite protection drainage plate, and the siphon drainage unit comprises a siphon drainage groove and a siphon drainage pipe communicated with the siphon drainage groove; the stored water recycling module is communicated with the siphon drainage pipe, and the stored water recycling module is used for storing the rainwater guided out through the siphon drainage unit; the device further comprises a ventilation observation unit, and the ventilation observation unit comprises a ventilation observation pipe communicated with the siphon drainage groove and a sediment observation well communicated with the siphon drainage groove.

Description

Technical Field

[0001] This application belongs to the field of building technology, and in particular relates to an underground roof drainage system and construction process. Background Technology

[0002] The drainage system of underground building roof slabs is an essential component for ensuring the safety and functionality of underground structures, and is widely used in various scenarios such as green roofs on underground parking garages. However, current underground roof slab drainage systems generally suffer from poor drainage performance. Traditional drainage systems often employ ordinary drainage boards combined with gravity drainage, lacking efficient diversion structure designs. Rainwater struggles to drain quickly, easily accumulating in the roof area. This water accumulation not only increases the load-bearing pressure on the roof structure but can also damage the waterproofing layer due to prolonged immersion, leading to potential leaks and further impacting the overall effectiveness of the drainage system.

[0003] Meanwhile, the existing drainage system suffers from poorly designed connections between waterproofing and drainage components. The waterproofing layer and drainage board often fail to adhere tightly, creating gaps that allow rainwater to seep in, damaging the integrity of the drainage channels and reducing drainage efficiency. Drainage treatment at the sidewalls of the underground roof slab is often inadequate, lacking effective connection design between the sidewall and roof drainage structures. Rainwater tends to accumulate at the junction of the sidewall and roof slab, failing to flow smoothly into the drainage channels and exacerbating the waterlogging problem.

[0004] Furthermore, the connection between the composite protective drainage board and the root-penetration resistant waterproof layer is not reliable enough, and peeling is prone to occur. This prevents the drainage board from fully performing its drainage function, causing rainwater to accumulate between the two layers and preventing it from quickly entering the drainage channel. In the design of the siphon drainage structure, the drainage channel structure and drainage pipe design of some existing systems are unreasonable, making it difficult to form a stable siphon flow, resulting in slow drainage speed and failing to meet the rapid drainage requirements of large-volume rainwater. Improvements are needed in these areas. Summary of the Invention

[0005] The purpose of this application is to provide an underground roof drainage system and construction process that can solve the above-mentioned problems.

[0006] The purpose of this application is to provide an underground roof drainage system, including: Underground roof base layer; The drainage and waterproofing components are installed above the base layer of the underground roof slab. The drainage and waterproofing components include a root-penetration resistant waterproof layer and a composite protective drainage board covering the root-penetration resistant waterproof layer. The composite protective drainage board is composed of a polymer protective drainage shaped sheet and a geotextile. The siphon drainage unit is installed above the composite protective drainage board. The siphon drainage unit includes a siphon drainage trough and a siphon drainage pipe connected to the siphon drainage trough. The water storage and recycling module is connected to the siphon drainage pipe and is used to store rainwater discharged through the siphon drainage unit. It also includes a ventilation observation unit, which includes a ventilation observation pipe connected to the siphon drainage channel and a sedimentation observation well connected to the siphon drainage pipe.

[0007] The aforementioned underground roof drainage system uses the underground roof base layer as the installation foundation for the entire drainage system. In the waterproofing components, the root-penetration-resistant waterproof layer effectively blocks the intrusion of plant roots, preventing rainwater leakage caused by damage to the waterproof layer, and preventing the underground environment from becoming damp and impurities from entering the drainage channel through the damaged area, thus providing basic protection. The composite protective drainage board is composed of polymer protective drainage shaped sheets and geotextile. The geotextile can perform preliminary filtration of rainwater, intercepting solid particles and other impurities in the rainwater to prevent impurities from clogging the subsequent drainage channels. The polymer protective drainage shaped sheets form a stable drainage channel, allowing the pre-filtered rainwater to flow quickly, reducing the residence time of rainwater in the roof area, and reducing the probability of impurity deposition.

[0008] Meanwhile, the siphon drainage unit collects pre-purified rainwater through a siphon drainage channel and then quickly discharges it through a siphon drainage pipe. The siphon effect accelerates rainwater flow, reduces the contact time between rainwater and impurities, and further reduces the impact of impurity deposition on water quality. The water storage and recovery module stores the rainwater discharged through the siphon drainage unit, avoiding resource waste caused by direct rainwater discharge, and providing conditions for subsequent deep purification. In the ventilation and observation unit, the ventilation and observation pipe connected to the siphon drainage channel maintains the air pressure balance in the drainage channel, ensuring smooth rainwater flow and avoiding drainage problems and impurity retention caused by air pressure imbalance. The sedimentation and observation well connected to the siphon drainage pipe can perform preliminary sedimentation of rainwater, separating some suspended impurities in the rainwater and improving the cleanliness of the stored rainwater.

[0009] Furthermore, the waterproofing and drainage assembly also includes a sidewall waterproofing and drainage board installed on the sidewall of the underground roof slab, which is connected to the composite protective drainage board.

[0010] The waterproofing and drainage components include sidewall waterproofing and drainage boards installed on the underground roof slab sidewalls, which are tightly connected to the composite protective drainage board to form a comprehensive waterproofing and drainage system. This prevents gaps from forming at the junction of the sidewalls and the roof slab due to improper structural connections. The sidewall waterproofing and drainage boards intercept rainwater and attached impurities on the sidewall surface, preventing rainwater accumulation at the junction. They also perform preliminary filtration of the rainwater from the sidewalls, removing some solid impurities, before guiding the filtered rainwater into the drainage channels of the composite protective drainage board. This achieves simultaneous drainage and purification of rainwater from the sidewalls and the roof slab. This prevents rainwater carrying impurities from directly seeping into the ground or accumulating in structural gaps, reducing pollution of the drainage system and underground environment, further improving the purification effect, and enhancing the system's seepage prevention performance.

[0011] Furthermore: the siphon drainage channel is a double-reinforced arch structure, and the siphon drainage pipe is provided with a variable diameter section, which is used to make rainwater form a siphon flow state in the pipe.

[0012] In this application, the siphon drainage trough adopts a double-reinforced arch structure, which improves the structural strength and stability of the drainage trough, avoids deformation of the trough due to water flow impact or external pressure during drainage, and ensures that the drainage channel is always unobstructed. The double-reinforced arch structure can also increase the rainwater collection area, improve rainwater collection efficiency, reduce the residence time of rainwater in the trough, and reduce the probability of impurity deposition. The variable diameter section set in the siphon drainage pipe can regulate the water flow speed and pressure in the pipe, thereby promoting the formation of a stable siphon flow state of rainwater. The high-speed siphon water flow can enhance the flushing effect on the small amount of attached impurities in the pipe, reduce the deposition of impurities on the pipe wall, and avoid pipe blockage affecting the purification process. At the same time, the rainwater flows faster under the siphon flow state, shortening the residence time of rainwater in the drainage system, so that the discharged rainwater maintains a better water quality.

[0013] Furthermore, the water storage and recycling module includes a water storage module body and a geotextile impermeable membrane covering the outside of the water storage module body. The water storage module body is connected to the siphon drainage pipe through a guide pipe.

[0014] In the rainwater storage and recycling module, the module itself provides space for rainwater storage, enabling centralized collection and retention of rainwater. The module itself can function as a modular water tank. A geotextile geomembrane covering the outside of the module effectively prevents rainwater from seeping into the ground, avoiding groundwater pollution. It also prevents impurities from the underground soil from entering the module and contaminating the stored rainwater, thus providing secondary filtration protection during storage. The module is connected to the siphon drainage pipe via a guide pipe, which guides the rainwater, initially purified by the sedimentation observation well, smoothly into the module. This prevents water flow impact from re-suspending impurities deposited within the module, ensuring the cleanliness of the stored rainwater. This effective purification and protection of the rainwater before and after storage improves the purification quality of the rainwater stored in the module, providing a cleaner water source for subsequent rainwater reuse.

[0015] Furthermore, the top of the ventilated observation tube is equipped with a dust cover, the sedimentation observation well is connected to the water storage and recovery module, and the sedimentation observation well is used to settle and filter the rainwater entering the water storage and recovery module.

[0016] A dust cover is installed at the top of the ventilated observation tube, which can effectively block dust, particulate matter and other impurities in the air from entering the ventilated observation tube, thereby preventing impurities from falling into the siphon drainage channel and polluting rainwater. This ensures the purification effect of the initial filtration of rainwater, while preventing impurities from accumulating in the ventilated observation tube and causing pipe blockage, and maintaining the stable function of air pressure balance.

[0017] The sedimentation observation well is connected to the water storage and recovery module and has a sedimentation and filtration function. It can deeply settle the rainwater discharged from the siphon drainage pipe, allowing fine suspended impurities in the rainwater that are not intercepted by the geotextile to settle to the bottom of the well under the action of gravity. Only the clean rainwater in the upper layer enters the water storage and recovery module, which effectively improves the purification level of the stored rainwater. The installation of the sedimentation observation well also makes it easy to visually observe the sedimentation of rainwater and the amount of impurities accumulated, and clean it in time to avoid excessive sedimentation impurities affecting the purification effect. At the same time, the operation status of the drainage system can be checked through the observation well to ensure the continuous rainwater purification process.

[0018] Furthermore, an adhesive layer is provided between the composite protective drainage board and the root-penetration resistant waterproof layer, and the adhesive layer adopts a self-adhesive waterproof adhesive material.

[0019] The self-adhesive waterproof bonding layer installed between the composite protective drainage board and the root-penetration resistant waterproof layer ensures a tight bond between the two layers, eliminating gaps and preventing rainwater from accumulating and forming stagnant water. This tight bond prevents impurities in the rainwater from depositing and breeding pollutants in the gaps, thus preventing corrosion of the waterproof layer and drainage board. Simultaneously, it ensures that rainwater can directly enter the geotextile of the composite protective drainage board for filtration, preventing prolonged contact between rainwater and impurities due to interlayer stagnation, effectively avoiding water quality deterioration.

[0020] Meanwhile, the self-adhesive waterproof adhesive has excellent waterproof performance, which further enhances the overall seepage prevention effect, prevents rainwater from carrying impurities and polluting the underground environment during leakage, and ensures that rainwater remains clean and protected during the drainage process.

[0021] Furthermore, it also includes a reuse component connected to the water storage and recycling module. The reuse component includes a water pump and a sprinkler system. The water pump is used to transport the rainwater stored in the water storage and recycling module to the sprinkler system to realize the reuse of rainwater for greening.

[0022] The reuse component, connected to the water storage and recycling module, enables the recycling of rainwater. A pump delivers the multi-stage purified rainwater stored in the module to the sprinkler system, preventing unpurified rainwater from being directly used for irrigation and thus contaminating vegetation. After initial filtration by geotextile, sedimentation in the observation well, and protection by a geotextile geomembrane, the rainwater exhibits significantly reduced impurities and improved cleanliness. When used for landscaping reuse through the sprinkler system, it avoids clogging of sprinkler heads due to impurities, and the purified rainwater, free of pollutants, provides clean and suitable moisture for vegetation growth, preventing soil compaction caused by impurities and improving the quality of vegetation growth.

[0023] In this application, the above structure not only saves water resources, but also realizes rainwater recycling, reduces the dependence of greening water on traditional water resources, and does not introduce additional pollutants during the reuse process, thus maintaining the cleanliness of the ecological environment.

[0024] Furthermore, this application also provides a construction process for an underground roof drainage system, including the following steps: S1. Clean and mark the location of the underground roof slab base; S2. Lay a root-penetration resistant waterproof layer on the underground roof slab base layer; S3. Lay a composite protective drainage board on top of the root-penetration resistant waterproof layer and connect the composite protective drainage board with the side wall seepage-proof drainage board. S4. Install a siphon drainage trough above the composite protective drainage board and connect the siphon drainage pipe to the siphon drainage trough. S5. Install the venting observation pipe and the sedimentation observation well, so that the venting observation pipe is connected to the siphon drainage trough and the sedimentation observation well is connected to the siphon drainage pipe. S6. Install the water storage and recovery module and connect the water storage and recovery module to the sedimentation observation well; S7. Install the reuse components and conduct system acceptance and backfilling operations.

[0025] In this application, the construction process is carried out step by step in sequence. First, the base layer of the underground roof slab is cleaned and positioned, removing impurities, dust, and other contaminants from the surface to prevent them from affecting the fit of the subsequent waterproofing components. Positioning ensures the accurate installation of each component, providing a foundation for tight connection between components. A root-penetration resistant waterproof layer is laid to ensure the system's basic seepage prevention capability, preventing rainwater leakage from affecting the purification effect. The connection construction between the composite protective drainage board and the side wall waterproofing drainage board ensures all-round drainage and filtration coverage, avoiding purification blind spots at the connection point. The standardized layout of the siphon drainage unit ensures the formation of the siphon flow, improving drainage and purification efficiency. The installation of the ventilated observation pipe and sedimentation observation well ensures the effective functioning of filtration, sedimentation, and observation. The layout and connection of the water storage and recycling module ensures purification and protection during rainwater storage. The installation of the reuse components and the system acceptance backfilling ensure the coordination of the entire system, avoiding gaps and blockages caused by improper installation that could affect the purification effect.

[0026] The beneficial effects of this application are: 1. In waterproofing components, the root-penetration resistant waterproof layer can effectively block the intrusion of plant roots, prevent rainwater leakage caused by damage to the waterproof layer, and prevent the underground environment from getting damp and impurities from entering the drainage channel through the damaged area, thereby providing basic protection. 2. The composite protective drainage board is composed of polymer protective drainage shaped sheets and geotextile. The geotextile can perform preliminary filtration of rainwater, intercepting solid particles and other impurities in the rainwater to prevent impurities from clogging the subsequent drainage channels. The polymer protective drainage shaped sheets form a stable drainage channel, allowing the pre-filtered rainwater to flow quickly, reducing the residence time of rainwater in the top area and reducing the probability of impurity deposition. 3. The siphon drainage unit collects the pre-purified rainwater through the siphon drainage channel and then quickly discharges it through the siphon drainage pipe. The siphon effect accelerates the flow of rainwater, reduces the contact time between rainwater and impurities, and further reduces the impact of impurity deposition on water quality. The water storage and recycling module stores the rainwater discharged through the siphon drainage unit to avoid the waste of resources caused by direct discharge of rainwater, and at the same time provides conditions for subsequent deep purification. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A magnified view of A in the middle.

[0028] The attached diagram is labeled as follows: 100, underground roof base layer; 200, waterproofing and drainage components; 210, root-penetration resistant waterproof layer; 220, composite protective drainage board; 221, polymer protective drainage irregular-shaped sheet; 222, geotextile; 230, sidewall seepage-proof drainage board; 300, siphon drainage unit; 310, siphon drainage channel; 320, siphon drainage pipe; 400, water storage and recycling module; 410, water storage module body; 420, geotextile impermeable membrane; 430, diversion pipe; 500, air permeability observation unit; 510, air permeability observation pipe; 511, dust cover; 520, sedimentation observation well; 600, adhesive layer; 700, reuse component; 710, water pump; 720, sprinkler system. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] The underground roof drainage system and construction process provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0032] Example 1: like Figure 1 and Figure 2 As shown in the figure, this application provides an underground roof drainage system, including: The base layer of the underground roof slab is 100mm thick. The drainage component 200 is installed above the base layer 100 of the underground roof slab. The drainage component 200 includes a root-penetration resistant waterproof layer 210 and a composite protective drainage board 220 covering the root-penetration resistant waterproof layer 210. The composite protective drainage board 220 is composed of a polymer protective drainage shaped sheet 221 and a geotextile 222. The siphon drainage unit 300 is installed above the composite protective drainage board 220. The siphon drainage unit 300 includes a siphon drainage channel 310 and a siphon drainage pipe 320 connected to the siphon drainage channel 310. The water storage and recovery module 400 is connected to the siphon drainage pipe 320. The water storage and recovery module 400 is used to store rainwater discharged through the siphon drainage unit 300. It also includes a ventilation observation unit 500, which includes a ventilation observation pipe 510 connected to the siphon drainage channel 310 and a sedimentation observation well 520 connected to the siphon drainage pipe 320.

[0033] In some embodiments of this application, such as Figure 1As shown, the above-mentioned underground roof drainage system uses an underground roof base 100 as the installation foundation for the entire drainage system. In the waterproofing and drainage components 200, the root-penetration resistant waterproof layer 210 can effectively block the intrusion of plant roots, prevent rainwater leakage caused by damage to the waterproof layer, and prevent the underground environment from becoming damp and impurities from entering the drainage channel through the damaged area, thus providing basic protection. The composite protective drainage board 220 is composed of a polymer protective drainage shaped sheet 221 and a geotextile 222. The geotextile 222 can perform preliminary filtration of rainwater, intercepting solid particles and other impurities in the rainwater to prevent impurities from clogging the subsequent drainage channel. The polymer protective drainage shaped sheet 221 forms a stable drainage channel, allowing the pre-filtered rainwater to flow quickly, reducing the residence time of rainwater in the roof area and reducing the probability of impurity deposition.

[0034] Meanwhile, the siphon drainage unit 300 collects the pre-purified rainwater through the siphon drainage channel 310, and then quickly discharges it through the siphon drainage pipe 320. The siphon effect accelerates the flow of rainwater, reduces the contact time between rainwater and impurities, and further reduces the impact of impurity deposition on water quality. The water storage and recovery module 400 stores the rainwater discharged through the siphon drainage unit 300, avoiding resource waste caused by direct discharge of rainwater, and providing conditions for subsequent deep purification. In the ventilation observation unit 500, the ventilation observation pipe 510 connected to the siphon drainage channel 310 can maintain the air pressure balance in the drainage channel, ensuring smooth rainwater flow and avoiding drainage problems and impurity retention caused by air pressure imbalance. The sedimentation observation well 520 connected to the siphon drainage pipe 320 can perform preliminary sedimentation of rainwater, separating some suspended impurities in the rainwater and improving the cleanliness of the stored rainwater.

[0035] Example 2: This application provides an underground roof drainage system and construction process. In addition to the above-mentioned technical features, the underground roof drainage system and construction process of this application also include the following technical features.

[0036] like Figure 1 As shown, the waterproofing and drainage assembly 200 also includes a sidewall waterproofing and drainage board 230 installed on the sidewall of the underground roof slab, and the sidewall waterproofing and drainage board 230 is connected to the composite protective drainage board 220.

[0037] In this embodiment, the sidewall waterproofing and drainage board 230 added to the underground roof slab sidewall of the waterproofing and drainage component 200 is tightly connected with the composite protective drainage board 220, thereby forming a comprehensive waterproofing and drainage protection system. This prevents gaps from forming at the junction of the sidewall and the roof slab due to improper structural connection. The sidewall waterproofing and drainage board 230 can intercept rainwater and attached impurities on the sidewall surface, preventing rainwater from accumulating at the junction. At the same time, it performs preliminary filtration of the sidewall rainwater, removing some solid impurities, and then guides the filtered rainwater into the drainage channel of the composite protective drainage board 220, achieving simultaneous drainage and purification of sidewall rainwater and roof rainwater. This prevents sidewall rainwater carrying impurities from directly seeping into the ground or accumulating in structural gaps, reducing the pollution of the drainage system and underground environment by impurities, further improving the purification effect, and also enhancing the system's seepage prevention performance.

[0038] Example 3: This application provides an underground roof drainage system and construction process. In addition to the above-mentioned technical features, the underground roof drainage system and construction process of this application also include the following technical features.

[0039] like Figure 1 As shown, the siphon drainage channel 310 is a double-reinforced arch structure, and the siphon drainage pipe 320 is provided with a variable diameter section, which is used to make rainwater form a siphon flow state in the pipe.

[0040] In this embodiment, the siphon drainage trough 310 adopts a double-reinforced arched structure, which improves the structural strength and stability of the drainage trough, avoids deformation of the trough due to water flow impact or external pressure during drainage, and ensures that the drainage channel is always unobstructed. The double-reinforced arched structure can also increase the rainwater collection area, improve the rainwater collection efficiency, reduce the residence time of rainwater in the trough, and reduce the probability of impurity deposition. The variable diameter section of the siphon drainage pipe 320 can regulate the water flow speed and pressure in the pipe, thereby promoting the formation of a stable siphon flow state of rainwater. The high-speed siphon water flow can enhance the flushing effect on the small amount of attached impurities in the pipe, reduce the deposition of impurities on the pipe wall, and avoid pipe blockage affecting the purification process. At the same time, the rainwater flows faster under the siphon flow state, shortening the residence time of rainwater in the drainage system, so that the discharged rainwater maintains a better water quality.

[0041] Example 4: This application provides an underground roof drainage system and construction process. In addition to the above-mentioned technical features, the underground roof drainage system and construction process of this application also include the following technical features.

[0042] like Figure 1As shown, the water storage and recycling module 400 includes a water storage module body 410 and a geotextile impermeable membrane 420 covering the outside of the water storage module body 410. The water storage module body 410 and the siphon drainage pipe 320 are connected through a guide pipe 430.

[0043] In this embodiment, the water storage and recycling module 400 provides space for rainwater storage, enabling centralized collection and retention of rainwater. The water storage module 410 can be a modular water tank. The geotextile geomembrane 420 covering the outside of the water storage module 410 effectively prevents stored rainwater from seeping into the ground, avoiding pollution of groundwater resources. It also prevents impurities in the underground soil from entering the water storage module and contaminating the stored rainwater, thus achieving secondary filtration protection during storage. The water storage module 410 and the siphon drainage pipe 320 are connected by a guide pipe 430. The guide pipe 430 guides the rainwater, initially purified by the sedimentation observation well 520, to flow smoothly into the water storage module, preventing water flow impact from causing impurities deposited in the module to re-suspend, ensuring the cleanliness of the stored rainwater. This ensures effective purification and protection of the rainwater before and after storage, improving the purification quality of the rainwater stored in the water storage and recycling module 400, thereby providing a cleaner water source for subsequent rainwater reuse.

[0044] Example 5: This application provides an underground roof drainage system and construction process. In addition to the above-mentioned technical features, the underground roof drainage system and construction process of this application also include the following technical features.

[0045] like Figure 1 As shown, the top of the ventilated observation tube 510 is provided with a dust cover 511, the sedimentation observation well 520 is connected to the water storage and recovery module 400, and the sedimentation observation well 520 is used to settle and filter the rainwater entering the water storage and recovery module 400.

[0046] In this embodiment, a dust cover 511 is installed at the top of the ventilated observation tube 510, which can effectively block dust, particulate matter and other impurities in the air from entering the ventilated observation tube 510, thereby preventing impurities from falling into the siphon drainage channel 310 and polluting the rainwater, thus ensuring the purification effect of the rainwater preliminary filtration stage, while preventing impurities from accumulating in the ventilated observation tube 510 and causing pipe blockage, and maintaining the stable function of air pressure balance.

[0047] The sedimentation observation well 520 is connected to the water storage and recovery module 400 and has a sedimentation and filtration function. It can perform deep sedimentation on the rainwater discharged from the siphon drainage pipe 320, so that the fine suspended impurities in the rainwater that are not intercepted by the geotextile 222 settle to the bottom of the well under the action of gravity, allowing only the upper clean rainwater to enter the water storage and recovery module 400, effectively improving the purification level of the stored rainwater. The installation of the sedimentation observation well 520 also makes it easy to visually observe the sedimentation of rainwater and the amount of impurities accumulated, and clean it in time to avoid excessive sedimentation impurities affecting the purification effect. At the same time, the operation status of the drainage system can be checked through the observation well to ensure the continuous rainwater purification process.

[0048] Example 6: This application provides an underground roof drainage system and construction process. In addition to the above-mentioned technical features, the underground roof drainage system and construction process of this application also include the following technical features.

[0049] like Figure 1 As shown, an adhesive layer 600 is provided between the composite protective drainage board 220 and the root-penetration resistant waterproof layer 210, and the adhesive layer 600 is made of self-adhesive waterproof adhesive material.

[0050] In this embodiment, the self-adhesive waterproof bonding layer 600 installed between the composite protective drainage board 220 and the root-penetration resistant waterproof layer 210 enables the two layers to fit tightly together, thereby eliminating gaps between the layers and preventing rainwater from accumulating and forming stagnant water. This tight bonding prevents impurities in the rainwater from depositing and breeding pollutants in the gaps, thus preventing impurities from corroding the waterproof layer and drainage board. At the same time, it ensures that rainwater can directly enter the geotextile 222 of the composite protective drainage board 220 for filtration, preventing prolonged contact between rainwater and impurities due to interlayer retention, effectively avoiding water quality deterioration.

[0051] Meanwhile, the self-adhesive waterproof adhesive has excellent waterproof performance, which further enhances the overall seepage prevention effect, prevents rainwater from carrying impurities and polluting the underground environment during leakage, and ensures that rainwater remains clean and protected during the drainage process.

[0052] Example 7: This application provides an underground roof drainage system and construction process. In addition to the above-mentioned technical features, the underground roof drainage system and construction process of this application also include the following technical features.

[0053] like Figure 1 As shown, it also includes a reuse component 700 connected to the water storage and recycling module 400. The reuse component 700 includes a water pump 710 and a sprinkler device 720. The water pump 710 is used to transport the rainwater stored in the water storage and recycling module 400 to the sprinkler device 720 to realize the greening reuse of rainwater.

[0054] In this embodiment, the reuse component 700, connected to the water storage and recycling module 400, enables the recycling of rainwater. The pump 710 transports the multi-stage purified rainwater stored in the water storage and recycling module 400 to the sprinkler device 720, preventing unpurified rainwater from being directly used for irrigation and thus contaminating vegetation. After preliminary filtration by geotextile 222, sedimentation in the sedimentation observation well 520, and protection by the geotextile 222 geomembrane, the impurity content of the rainwater is significantly reduced, and its cleanliness is effectively improved. When used for greening reuse through the sprinkler device 720, it avoids clogging the sprinkler heads due to impurities, and the purified rainwater is free of pollutants, providing clean and suitable moisture for vegetation growth, preventing soil compaction due to impurity accumulation, and improving the growth quality of green vegetation.

[0055] In this application, the above structure not only saves water resources, but also realizes rainwater recycling, reduces the dependence of greening water on traditional water resources, and does not introduce additional pollutants during the reuse process, thus maintaining the cleanliness of the ecological environment.

[0056] Example 8: This application provides a construction process for an underground roof drainage system, including the following steps: S1. Clean and mark the positioning lines for the underground roof slab base layer 100; S2. Lay a root-penetration resistant waterproof layer 210 on the underground roof slab base layer 100; S3. Lay a composite protective drainage board 220 on top of the root-penetration resistant waterproof layer 210 and connect the composite protective drainage board 220 with the side wall seepage-proof drainage board 230. S4. Install a siphon drainage trough 310 above the composite protective drainage board 220 and connect the siphon drainage pipe 320 to the siphon drainage trough 310. S5. Install the venting observation pipe 510 and the sedimentation observation well 520, so that the venting observation pipe 510 is connected to the siphon drainage trough 310 and the sedimentation observation well 520 is connected to the siphon drainage pipe 320. S6. Install the water storage and recovery module 400 and connect the water storage and recovery module 400 to the sedimentation observation well 520; S7. Install the reuse component 700 and conduct system acceptance and backfilling operations.

[0057] In this application, the construction process is carried out step by step in sequence. First, the base layer 100 of the underground roof slab is cleaned and positioned. Impurities, dust and other pollutants on the surface of the base layer are removed to avoid impurities affecting the fit of the subsequent waterproof and drainage components 200. Positioning and laying out ensures that the installation position of each component is accurate, thus providing a foundation for the tight connection between the components. A root-penetration resistant waterproof layer 210 is laid to ensure the system's basic impermeability and prevent subsequent rainwater leakage from affecting the purification effect. The connection construction between the composite protective drainage board 220 and the side wall impermeable drainage board 230 ensures all-round drainage and filtration coverage, avoiding purification blind spots at the connection point. The standardized layout of the siphon drainage unit 300 ensures the formation of the siphon flow pattern, improving drainage and purification efficiency. The installation of the ventilated observation pipe 510 and the sedimentation observation well 520 ensures the effective functioning of filtration, sedimentation, and observation. The layout and connection of the water storage and recycling module 400 ensures purification protection during rainwater storage. The installation of the reuse component 700 and the system acceptance backfilling ensure the coordination of the entire system and avoid problems such as gaps and blockages caused by improper installation that affect the purification effect.

[0058] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0059] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An underground roof drainage system, characterized in that: include: Underground roof base layer (100); The drainage component (200) is installed above the base layer (100) of the underground roof slab. The drainage component (200) includes a root-penetration resistant waterproof layer (210) and a composite protective drainage board (220) covering the root-penetration resistant waterproof layer (210). The composite protective drainage board (220) is composed of a polymer protective drainage shaped sheet (221) and a geotextile (222). The siphon drainage unit (300) is installed above the composite protective drainage board (220). The siphon drainage unit (300) includes a siphon drainage channel (310) and a siphon drainage pipe (320) connected to the siphon drainage channel (310). The water storage and recovery module (400) is connected to the siphon drainage pipe (320) and is used to store rainwater discharged through the siphon drainage unit (300). It also includes a ventilation observation unit (500), which includes a ventilation observation pipe (510) connected to the siphon drainage channel (310) and a sedimentation observation well (520) connected to the siphon drainage pipe (320).

2. The underground roof drainage system according to claim 1, characterized in that: The waterproofing and drainage assembly (200) also includes a sidewall waterproofing and drainage board (230) installed on the sidewall of the underground roof slab, and the sidewall waterproofing and drainage board (230) is connected to the composite protective drainage board (220).

3. The underground roof drainage system according to claim 1, characterized in that: The siphon drainage channel (310) is a double-reinforced arch structure, and the siphon drainage pipe (320) is provided with a variable diameter section, which is used to make rainwater form a siphon flow state in the pipe.

4. The underground roof drainage system according to claim 1, characterized in that: The water storage and recycling module (400) includes a water storage module body (410) and a geotextile impermeable membrane (420) covering the outside of the water storage module body (410). The water storage module body (410) and the siphon drainage pipe (320) are connected through a guide pipe (430).

5. The underground roof drainage system according to claim 1, characterized in that: The top of the ventilated observation tube (510) is provided with a dust cover (511), the sedimentation observation well (520) is connected to the water storage and recovery module (400), and the sedimentation observation well (520) is used to sediment and filter the rainwater entering the water storage and recovery module (400).

6. The underground roof drainage system according to claim 1, characterized in that: An adhesive layer (600) is provided between the composite protective drainage board (220) and the root-penetration resistant waterproof layer (210), and the adhesive layer (600) is made of self-adhesive waterproof adhesive material.

7. The underground roof drainage system according to claim 1, characterized in that: It also includes a reuse component (700) connected to the water storage and recycling module (400). The reuse component (700) includes a water pump (710) and a sprinkler device (720). The water pump (710) is used to transport the rainwater stored in the water storage and recycling module (400) to the sprinkler device (720) to realize the greening reuse of rainwater.

8. A construction process for the underground roof drainage system according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Clean and position the base layer (100) of the underground roof slab; S2. Lay a root-penetration resistant waterproof layer (210) on the underground roof base layer (100); S3. Lay a composite protective drainage board (220) on top of the root-penetration resistant waterproof layer (210) and connect the composite protective drainage board (220) with the side wall seepage-proof drainage board (230). S4. Install a siphon drainage channel (310) above the composite protective drainage board (220) and connect the siphon drainage pipe (320) to the siphon drainage channel (310); S5. Install the ventilated observation pipe (510) and the sedimentation observation well (520) so that the ventilated observation pipe (510) is connected to the siphon drainage channel (310) and the sedimentation observation well (520) is connected to the siphon drainage pipe (320). S6. Install the water storage and recovery module (400) and connect the water storage and recovery module (400) to the sedimentation observation well (520); S7. Install the reuse components (700) and conduct system acceptance and backfilling operations.

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