Urban road sponge system

Abstract

The present application relates to the field of sponge cities, and in particular to an urban road sponge system, comprising a roadbed, a road being arranged on the upper side of the roadbed, a plurality of green belts being arranged on both sides of the roadbed corresponding to the road, the upper side of the green belt being lower than the upper side of the road, a stone retaining belt 1 being arranged between the green belt and the road, a stone retaining belt 2 being arranged between adjacent green belts, a drainage ditch being arranged between adjacent two stone retaining belts, drainage holes being provided on the two stone retaining belts, and a rainwater well being provided at one end of the drainage ditch away from the road; an overflow well 1 being vertically fixedly connected in the middle of the green belt, a water supply pipe 1 being fixedly connected at the lower end of the overflow well 1 and being connected to the rainwater well, a water storage well being connected to the rainwater well being provided in the roadbed, a unidirectional seepage pipe 1 being fixedly connected to one side of the water storage well and extending into the planting soil layer of the green belt. The present application has the effect of reducing the workload of municipal personnel and achieving the effect of irrigating plants in the green belt.

Description

Technical Field

[0001] The present application relates to the field of sponge cities, and in particular to an urban road sponge system. Background Art

[0002] Urban roads connect all areas of the city and provide transportation and pedestrian use within the city, facilitating residents' lives, work, cultural and entertainment activities, and connecting with roads outside the city to carry external traffic.

[0003] At present, green belts are often set up on both sides of urban roads, but green belts are often prone to drought. Therefore, municipal workers are required to water the plants in the green belts after a certain period of time, which is tedious and tiring work. Summary of the invention

[0004] In order to reduce the workload of municipal staff and to enable irrigation of plants in green belts, the present application provides an urban road sponge system.

[0005] The urban road sponge system provided in this application adopts the following technical solution:

[0006] A city road sponge system comprises a roadbed, a road is arranged on the upper side of the roadbed, multiple sections of green belts are arranged on both sides of the roadbed corresponding to the road, the green belt includes a planting soil layer and a covering layer from bottom to top, an impermeable geotextile is arranged between the roadbed and the planting soil layer, the upper side of the green belt is lower than the upper side of the road, a stone retaining belt 1 is arranged between the green belt and the road, a stone retaining belt 2 is arranged between adjacent green belts, a drainage ditch is arranged between adjacent stone retaining belts 2, the upper side of the drainage ditch is flush with the upper side of the road, both sides of the drainage ditch are inclined and bent downward, and the stone retaining belt 2 is from the drainage ditch to the green belt. A plurality of drainage holes penetrating the stone retaining belt 2 are provided in a downwardly inclined direction; a rainwater well is vertically provided at the end of the roadbed corresponding to the drainage trough away from the road; an overflow well is vertically fixedly connected to the middle of the green belt, the upper end of the overflow well is higher than the upper side of the green belt and lower than the lower side of the drainage hole, a water supply pipe 1 connected to the rainwater well is fixedly connected to the lower end of the overflow well, a water storage well connected to the rainwater well is provided in the roadbed, a unidirectional seepage pipe 1 extending into the planting soil layer of the green belt and capable of seeping water into the planting soil layer is fixedly connected to one side of the water storage well, and a control valve 1 is provided between the unidirectional seepage pipe 1 and the water storage well.

[0007] By adopting the above technical solution, when it rains, rainwater on the road will flow to the drainage grooves on both sides of the road. When the rainwater flows out of the drainage grooves, part of the rainwater will first flow to the green belt from the drainage holes on both sides of the drainage grooves. When the rainwater is heavy, the excess rainwater will flow directly to the rainwater well for drainage. At the same time, after the rainwater falls on the green belt, it will gradually penetrate into the planting soil layer on the lower side of the green belt to achieve water storage. When the rainwater is heavy, the rainwater level in the green belt is higher than the upper end of the overflow well, and the rainwater will flow directly to the overflow well. Well 1, and then the rainwater in overflow well 1 flows to the rainwater well and merges with the rainwater in the rainwater well. Finally, the rainwater in the rainwater well flows to the water storage well for storage. When the plants in the green tree belt need to be watered during a relatively dry period, the water in the water storage well can be directly controlled through control valve 1 to flow to the one-way seepage pipe 1, and directly seep into the planting soil layer in the green belt, so as to directly water the roots of the plants in the green belt. On the one hand, it reduces the fatigue of municipal personnel, and on the other hand, it realizes the storage and utilization of rainwater.

[0008] Preferably, a sunken green space is provided on one side of the roadbed, and the sunken green space includes original planting soil, a gravel layer and a sunken aquifer from bottom to top. An anti-seepage membrane is provided on the outside of the original planting soil, and the upper side of the aquifer of the sunken green space is lower than the upper side of the green belt. An overflow well 2 with the same structure as the overflow well 1 is vertically arranged in the middle of the sunken green space, and the upper end of the overflow well 2 is higher than the 2 / 3 position of the sunken aquifer and lower than the upper side of the sunken aquifer, and the lower end of the overflow well 2 is connected with a rainwater well, and the water storage well is provided with a unidirectional seepage pipe 2 which extends into the original planting soil of the sunken green space and can seep water into the original planting soil.

[0009] By adopting the above technical scheme, the sunken green space can further collect and store rainwater. When there is more rainwater, the rainwater level in the aquifer is higher than the upper end of the overflow well 2, and the rainwater will flow directly into the overflow well 2. Then the rainwater in the overflow well 2 flows to the rainwater well and merges with the rainwater in the rainwater well. Finally, the rainwater in the rainwater well flows to the water storage well for storage. When the plants in the sunken green space need to be watered in a relatively dry period, the water in the water storage well flows to the one-way seepage pipe 2, and directly seeps into the planting soil layer in the sunken green space, so as to directly irrigate the roots of the plants in the sunken green space. On the one hand, it reduces the fatigue of municipal personnel, and on the other hand, it realizes the storage and utilization of rainwater.

[0010] Preferably, a water pipe 2 extending into the sunken green space aquifer is fixedly connected to a lower end of the overflow well, a regulating valve 1 is arranged between the water pipe 1 and the overflow well 1, and a regulating valve 2 is fixedly connected between the water pipe 2 and the overflow well 1.

[0011] By adopting the above technical solution, the water in the overflow well 1 can flow preferentially into the aquifer of the sunken green space, thereby replenishing the aquifer of the sunken green space first.

[0012] Preferably, the overflow well includes a wellbore and a fixed cylinder arranged at the upper end of the wellbore, the inner circumferential surface of the fixed cylinder is fixedly connected to a limiting ring, the upper side of the fixed cylinder is provided with a floating plate capable of covering the fixed cylinder, the lower side of the floating plate is fixedly connected to a pull rod extending into the fixed cylinder, the lower end of the pull rod is fixedly connected to a baffle plate with a diameter larger than the aperture of the limiting ring, and a plurality of water leakage holes are opened on the upper side of the baffle plate.

[0013] By adopting the above technical solution, under normal conditions, the floating plate will fall directly to the upper side of the overflow well 1 due to its own gravity, thereby covering the wellbore and preventing foreign matter from entering the overflow well 1. When there is a lot of rain, the floating plate will be lifted by buoyancy. At this time, the overflow well 1 is opened and the rainwater will flow directly into the overflow well 1. At the same time, the pull rod and the baffle cooperate with each other to prevent the floating plate from detaching, and the leakage hole is used to facilitate rainwater to flow into the overflow well 1 through the baffle.

[0014] Preferably, the outer periphery of the floating plate is bent downward in an arc shape, a hollow bag is provided in the middle of the floating plate, and the floating plate is evenly provided with multiple strip holes with one end extending out of the outer periphery of the floating plate with the hollow bag as the center, and the other end of each strip hole is closed.

[0015] By adopting the above technical solution, the outer peripheral surface of the floating plate is bent downward, which can further block the overflow well one, and when the rainwater level in the green belt rises, part of the rainwater flows from bottom to top into the bar holes of the floating plate, which will quickly push the floating plate up. At the same time, the hollow bag can further increase the buoyancy of the floating plate to ensure that the floating plate floats. In addition, when the rainwater level drops, the rainwater in the bar holes will also flow out quickly to avoid accumulation in the bar holes.

[0016] Preferably, a flexible telescopic net sleeve sleeved on the outside of the fixed cylinder is connected to the lower side of the floating plate, and the lower end of the flexible telescopic net sleeve is fixedly connected to the lower end of the fixed cylinder.

[0017] By adopting the above technical solution, when the floating plate floats up, the flexible telescopic net sleeve is expanded to achieve a blocking and filtering effect, thereby preventing impurities in rainwater from entering the overflow well and clogging the overflow well.

[0018] Preferably, a protective filter cover is provided on the outer side of the green belt corresponding to the overflow well 1.

[0019] By adopting the above technical solution, the protective filter cover can further protect the overflow well 1 and prevent external organisms from damaging the overflow well 1.

[0020] Preferably, an external threaded sleeve is fixedly connected to the lower end of the fixed tube, an internal threaded sleeve connectable to the external threaded sleeve is fixedly connected to the upper end of the wellbore, and elastic sealing rings are fixedly connected to the outer side of the external threaded sleeve of the fixed tube and the inner side of the internal threaded sleeve of the wellbore.

[0021] By adopting the above technical solution, the fixed tube and the wellbore can be easily disassembled, thereby facilitating replacement and maintenance. At the same time, the elastic sealing ring used can prevent water from flowing to the connection position between the threaded sleeve and the external threaded sleeve, thereby protecting it and ensuring the subsequent disassembly and installation.

[0022] Preferably, the fixed cylinder is detachably connected with a second anti-fouling hanging net, and the second anti-fouling hanging net comprises a connecting net with multiple layers stacked, and a plurality of connecting wires are fixedly connected between two adjacent layers of the connecting net.

[0023] By adopting the above technical solution, the anti-fouling hanging net 2 can hang and hold foreign objects such as grass clippings when they flow into the overflow well 1, thereby preventing the foreign objects from flowing down.

[0024] Preferably, a manhole cover is provided on the upper side of the rainwater well, a plurality of water flow holes are opened on the manhole cover, and an anti-fouling net 1 having the same structure as the anti-fouling net 2 is fixedly connected to the lower side of the manhole cover.

[0025] By adopting the above technical solution, the water flow holes can conveniently discharge rainwater and cover the rainwater well, and the anti-fouling net can further block foreign objects.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When it rains, rainwater on the road will flow to the drainage grooves on both sides of the road. When the rainwater flows out of the drainage grooves, part of the rainwater will first flow to the green belt from the drainage holes on both sides of the drainage grooves. When there is a lot of rain, the excess rainwater will flow directly to the rainwater well for drainage. At the same time, after the rainwater falls on the green belt, it will gradually penetrate into the planting soil layer on the lower side of the green belt to achieve water storage. When there is a lot of rain, the rainwater level in the green belt is higher than the upper end of the overflow well 1, and the rainwater will flow directly into the overflow well 1. Then the rainwater in the overflow well 1 flows to the rainwater well and merges with the rainwater in the rainwater well. Finally, the rainwater in the rainwater well flows to the water storage well for storage. When the plants in the green belt need to be watered during a relatively dry period, the water in the water storage well can flow to the one-way seepage pipe 1 directly through the control valve 1, and directly seep into the planting soil layer in the green belt, so as to directly irrigate the roots of the plants in the green belt. On the one hand, it reduces the fatigue of municipal personnel, and on the other hand, it realizes the storage and utilization of rainwater.

[0028] 2. The sunken green space can further collect and store rainwater. When there is a lot of rainwater, the rainwater level in the aquifer is higher than the upper end of the overflow well 2, and the rainwater will flow directly into the overflow well 2. Then the rainwater in the overflow well 2 will flow to the rainwater well and merge with the rainwater in the rainwater well. Finally, the rainwater in the rainwater well will flow to the water storage well for storage. When the plants in the sunken green space need to be watered during a relatively dry period, the water in the water storage well will flow to the one-way seepage pipe 2, and directly seep into the original planting soil in the sunken green space, so as to directly irrigate the roots of the plants in the sunken green space. In addition, the water in the overflow well 1 can flow preferentially into the aquifer of the sunken green space, and replenish the aquifer of the sunken green space first.

[0029] 3. Under normal circumstances, the floating plate will fall directly to the upper side of the overflow well 1 due to its own gravity, thereby covering the wellbore to prevent foreign matter from entering the overflow well 1. When there is a lot of rain, the floating plate will be lifted by buoyancy. At this time, the overflow well 1 is opened and the rainwater will flow directly into the overflow well 1. At the same time, the pull rod and the baffle cooperate with each other to prevent the floating plate from detaching, and the leakage hole is used to facilitate the rainwater to flow into the overflow well 1 through the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the locations of roads and green belts in the embodiments of the present application.

[0031] Figure 2 It is a schematic diagram of the green belt structure in the embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the manhole cover structure in an embodiment of the present application.

[0033] Figure 4 It is a schematic diagram of the structure of overflow well 1 in the embodiment of the present application.

[0034] Figure 5 It is a schematic diagram of the structure of the sunken green space in the embodiment of the present application.

[0035] Figure 6 It is a schematic structural diagram of a water storage well in an embodiment of the present application.

[0036] Explanation of the reference numerals: 1. roadbed; 2. road; 3. green belt; 31. planting soil layer; 32. covering layer; 33. anti-seepage geotextile; 34. stone retaining belt one; 35. stone retaining belt two; 351. drainage hole; 36. protective filter cover; 4. drainage trough; 41. rainwater well; 411. manhole cover; 412. water flow hole; 42. anti-fouling hanging net one; 421. connecting net; 422. connecting line; 43. connecting pipe one; 5. overflow well one; 51. wellbore; 511. internal threaded sleeve; 52. fixing sleeve; 521. external threaded sleeve; 522. limiting ring; 53. elastic seal ring; 54, floating plate; 541, hollow bag; 542, strip hole; 543, flexible telescopic net; 544, pull rod; 545, baffle plate; 546, leaking hole; 55, anti-fouling hanging net 2; 56, water pipe 1; 561, regulating valve 1; 57, water pipe 2; 571, regulating valve 2; 6, water storage well; 61, one-way seepage pipe 1; 611, control valve 1; 62, one-way seepage pipe 2; 621, control valve 2; 7, sunken green space; 71, original planting soil; 72, gravel layer; 73, aquifer; 74, anti-seepage membrane; 75, overflow well 2; 76, connecting pipe 2. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The embodiment of the present application discloses an urban road sponge system.

[0039] Reference Figure 1 and Figure 2The urban road sponge system includes a roadbed 1, a road 2 is arranged on the upper side of the roadbed 1, multiple green belts 3 are arranged on both sides of the roadbed 1 corresponding to the road 2, the multiple green belts 3 are arranged along the length direction of the road 2, each section of the green belt 3 includes a planting soil layer 31 and a covering layer 32 from bottom to top, an impermeable geotextile 33 is arranged between the roadbed 1 and the planting soil layer 31, the upper side of the green belt 3 is lower than the upper side of the road 2, a stone retaining belt 34 is arranged between the green belt 3 and the road 2, the length direction of the stone retaining belt 34 is the same as the length direction of the road 2, and the upper side of the stone retaining belt 34 is higher than the upper side of the road 2. A second stone retaining belt 35 is arranged between adjacent green belts 3. The length direction of the second stone retaining belt 35 is perpendicular to the length direction of the road 2, and the upper side of the second stone retaining belt 35 is higher than the upper side of the roadbed 1. A drainage ditch 4 is arranged at the position between the adjacent stone retaining belts 35 on the roadbed 1. The upper side of the drainage ditch 4 is flush with the upper side of the road 2, and both sides of the drainage ditch 4 are inclined and bent downward. The second stone retaining belt 35 is provided with a plurality of drainage holes 351 that penetrate the second stone retaining belt 35 along its length direction. Each drainage hole 351 is arranged obliquely downward from the drainage ditch 4 to the direction toward the green belt 3. A rainwater well 41 is vertically opened in the roadbed 1 corresponding to the end of the drainage ditch 4 away from the road 2. When it rains, rainwater from the road 2 will flow to the drainage ditches 4 on both sides of the road 2. When the rainwater flows out of the drainage ditches 4, a portion of the rainwater will first flow from the drainage holes 351 on both sides of the drainage ditches 4 to the green belt 3. After the rainwater falls on the green belt 3, it will gradually penetrate into the planting soil layer 31 on the lower side of the green belt 3 to achieve water storage. When there is more rainwater, the excess rainwater on the upper side of the drainage ditches 4 will directly flow to the rainwater well 41 for drainage.

[0040] Reference Figure 2 and Figure 3 A manhole cover 411 is provided on the upper side of the rainwater well 41, and a plurality of water holes 412 are provided on the manhole cover 411. An anti-fouling hanging net 42 is bolted to the lower side of the manhole cover 411. The anti-fouling hanging net 42 includes a multi-layer stacked connection net 421. A plurality of connecting wires 422 are fixedly connected between two adjacent layers of the connection net 421, and the multi-layer connection net 421 is connected by the plurality of connecting wires 422. The adopted water holes 412 can conveniently realize the discharge of rainwater and cover the rainwater well 41. The adopted anti-fouling hanging net 42, when foreign matter such as grass clippings and hair flows into the water holes 412, will be directly hung on the anti-fouling hanging net 42, thereby blocking the foreign matter.

[0041] Reference Figure 2 and Figure 4An overflow well 5 is vertically fixed in the middle of the green belt 3, the upper end of the overflow well 5 is higher than the upper side of the green belt 3 and lower than the lower side of the drainage hole 351, the overflow well 5 includes a well shaft 51 and a fixed cylinder 52 arranged at the upper end of the well shaft 51, an external threaded sleeve 521 is fixed at the lower end of the fixed cylinder 52, an internal threaded sleeve 511 is fixed at the upper end of the well shaft 51, the external threaded sleeve 521 can be threadedly connected with the external threaded sleeve 521, an elastic sealing ring 53 is fixed to the outer side of the fixed cylinder 52 corresponding to the external threaded sleeve 521 and the inner side of the internal threaded sleeve 511 corresponding to the well shaft 51, and a protective filter cover 36 is provided on the outer side of the green belt 3 corresponding to the overflow well 5. The protective filter cover 36 used can protect the overflow well 5 to prevent external organisms from damaging the overflow well 5. When the fixed tube 52 needs to be replaced and repaired, it is convenient to disassemble the fixed tube 52 and the wellbore 51. At the same time, the elastic sealing ring 53 used can prevent water from flowing to the connection position between the threaded sleeve and the external threaded sleeve 521, thereby protecting it and ensuring the necessary disassembly and installation later.

[0042] The inner circumference of the fixed cylinder 52 is fixedly connected with a limit ring 522, and the limit ring 522 is coaxially arranged with the fixed cylinder 52. A floating plate 54 capable of covering the fixed cylinder 52 is arranged on the upper side of the fixed cylinder 52. The outer periphery of the floating plate 54 is bent downward in an arc shape. A cavity is opened in the middle of the floating plate 54 to form a hollow bag 541. A plurality of strip holes 542 with one end extending out of the outer periphery of the floating plate 54 are evenly opened in the floating plate 54 with the hollow bag 541 as the center of the circle, and one end of each strip hole 542 close to the hollow bag 541 is closed. The lower side of the floating plate 54 is connected with a flexible telescopic net sleeve 543 sleeved on the outer side of the fixed cylinder 52, and the lower end of the flexible telescopic net sleeve 543 is fixedly connected to the lower end of the fixed cylinder 52. The lower end of the inner wall of the fixed cylinder 52 is bolted with an anti-fouling net 2 55. The structure of the anti-fouling net 2 55 is the same as that of the anti-fouling net 1 42, which will not be repeated here.

[0043] A pull rod 544 extending into the fixed tube 52 is fixedly connected to the lower side of the floating plate 54 , and a baffle 545 having a diameter larger than the inner hole diameter of the limiting ring 522 is fixedly connected to the lower end of the pull rod 544 . A plurality of water leakage holes 546 are formed on the upper side of the baffle 545 . Under normal circumstances, the floating plate 54 will fall directly to the upper side of the overflow well 5 due to its own gravity, and the outer peripheral surface of the floating plate 54 is bent downward to ensure that the overflow well 5 is covered. When the rainwater level in the green belt 3 rises, part of the rainwater flows from bottom to top into the bar holes 542 of the floating plate 54, quickly pushing the floating plate 54 up, and at the same time, the hollow bag 541 can further increase the buoyancy of the floating plate 54 to ensure that the floating plate 54 floats. The pull rod 544 and the baffle plate 545 cooperate with each other to prevent the floating plate 54 from detaching. The leakage hole 546 is used to facilitate rainwater to flow through the baffle plate 545 into the overflow well 5. When the rainwater level drops, the rainwater in the bar holes 542 will also flow out quickly, and drag the floating plate 54 to move downward quickly, so as to close the overflow well, and then the water flow in the bar holes 542 will also flow out completely. Secondly, when the floating plate 54 floats up, the flexible telescopic net sleeve 543 is expanded to achieve a blocking and filtering effect, thereby preventing impurities in the rainwater from entering the overflow well 5 and clogging the overflow well 5.

[0044] The lower end of the overflow well 5 is fixedly connected with a water pipe 56 connected with the rainwater well 41, and a regulating valve 561 is arranged between the water pipe 56 and the overflow well 5, and the regulating valve 561 can close or open the water pipe 56. A water storage well 6 is opened in the roadbed 1, and a connecting pipe 43 is fixedly connected between the rainwater well 41 and the water storage well 6. A one-way seepage pipe 61 extending into the planting soil layer 31 of the green belt 3 is fixedly connected to one side of the water storage well 6, and the one-way seepage pipe 61 can seep water into the soil layer. A control valve 611 is arranged between the one-way seepage pipe 61 and the water storage well 6, and the control valve 611 can close or open the one-way seepage pipe 61. The rainwater in the overflow well 5 can flow into the rainwater well 41 through the water pipe 56 and merge with the rainwater in the rainwater well 41. Then, the rainwater in the rainwater well 41 flows into the water storage well 6 for storage. When the plants in the green tree belt need to be watered during a relatively dry period, the one-way seepage pipe 61 is directly opened through the control valve 611 to make the water in the water storage well 6 flow into the one-way seepage pipe 61 and directly seep into the planting soil in the green belt 3. The roots of the plants in the green belt 3 can be directly irrigated, which reduces the fatigue of municipal personnel on the one hand and realizes the storage and utilization of rainwater on the other hand.

[0045] Reference Figure 1 and Figure 5A sunken green space 7 is provided on one side of the roadbed 1. The sunken green space 7 includes original planting soil 71, gravel layer 72 and sunken aquifer 73 from bottom to top. An anti-seepage membrane 74 is provided on the outer side of the original planting soil 71. The upper side of the sunken aquifer 73 of the sunken green space 7 is lower than the upper side of the green belt 3. An overflow well 2 75 is vertically provided in the middle of the sunken green space 7. The structure of the overflow well 2 75 is the same as that of the overflow well 1 5, which will not be repeated here. The upper end of the overflow well 2 75 is higher than 2 / 3 of the height of the sunken aquifer 73 and lower than the upper side of the sunken aquifer 73.

[0046] Reference Figure 5 and Figure 6 A connecting pipe 2 76 is fixedly connected between the lower end of the overflow well 2 75 and the rainwater well 41, a water pipe 2 57 is fixedly connected to the lower end of the overflow well 1 5 and extends to the aquifer 73 in the sunken green space 7, a regulating valve 2 571 is fixedly connected between the water pipe 2 57 and the overflow well 1 5, a one-way seepage pipe 2 62 is fixedly connected to the water storage well 6 and extends to the original planting soil 71 in the sunken green space 7, the one-way seepage pipe 2 62 can seep water into the original planting soil 71, a control valve 2 621 is fixedly connected between the one-way seepage pipe 2 62 and the water storage well 6, and the control valve 2 621 can shut off or open the one-way seepage pipe 2 62. The sunken green space 7 used can further collect and store rainwater. When there is a lot of rainwater, the rainwater level in the water storage layer 73 is higher than the upper end of the overflow well 2 75, and the rainwater will flow directly into the overflow well 2 75. Then the rainwater in the overflow well 2 75 flows to the rainwater well 41 and merges with the rainwater in the rainwater well 41. Finally, the rainwater in the rainwater well 41 flows to the water storage well 6 for storage. When the plants in the sunken green space 7 need to be watered during a relatively dry period, the water in the water storage well 6 flows to the one-way seepage pipe 2 62, and directly seeps into the planting soil in the green belt 3, so as to directly irrigate the roots of the plants in the sunken green space 7. On the other hand, the water in the overflow well 1 5 can also flow preferentially to the water storage layer 73 of the sunken green space 7 through the water supply pipe 2 57, and the water storage layer 73 of the sunken green space 7 is replenished first.

[0047] The implementation principle of the urban road sponge system of the embodiment of the present application is as follows: when it rains, rainwater on the road 2 will flow to the drainage grooves 4 on both sides of the road 2. When the rainwater flows out of the drainage grooves 4, a part of the rainwater will first flow to the green belt 3 from the drainage holes 351 on both sides of the drainage grooves 4. When the rainwater is heavy, the excess rainwater will flow directly to the rainwater well 41 for drainage. At the same time, after the rainwater falls on the green belt 3, it will gradually penetrate into the planting soil layer 31 on the lower side of the green belt 3 to achieve water storage. When the rainwater is heavy, the rainwater level in the green belt 3 is higher than the overflow well 41. At the upper end of the flow well 5, rainwater will directly flow into the overflow well 5, and then the rainwater in the overflow well 5 will flow into the rainwater well 41 and merge with the rainwater in the rainwater well 41, and finally the rainwater in the rainwater well 41 will flow into the water storage well 6 for storage. When it is necessary to water the plants in the green tree belt during a relatively dry period, the one-way seepage pipe 61 is directly opened through the control valve 611, so that the water in the water storage well 6 flows into the one-way seepage pipe 61, and directly seeps into the planting soil in the green belt 3, so as to directly water the roots of the plants in the green belt 3.

[0048] The sunken green space 7 used can further collect and store rainwater. When there is a lot of rainwater, the rainwater level in the water storage layer 73 is higher than the upper end of the overflow well 75, and the rainwater will flow directly into the overflow well 75. Then the rainwater in the overflow well 75 flows to the rainwater well 41 and merges with the rainwater in the rainwater well 41. Finally, the rainwater in the rainwater well 41 flows to the water storage well 6 for storage. When the plants in the sunken green space 7 need to be watered during a relatively dry period, the water in the water storage well 6 flows to the one-way seepage pipe 62 and directly seeps into the planting soil layer 31 in the green belt 3, so as to directly irrigate the roots of the plants in the sunken green space 7. On the one hand, it reduces the fatigue of municipal personnel, and on the other hand, it realizes the storage and utilization of rainwater.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An urban road sponge system, comprising a roadbed (1), a road (2) being arranged on the upper side of the roadbed (1), and multiple sections of green belts (3) being arranged on both sides of the roadbed (1) corresponding to the road (2), characterized in that: The green belt (3) includes a planting soil layer (31) and a covering layer (32) from bottom to top; an anti-seepage geotextile (33) is arranged between the roadbed (1) and the planting soil layer (31); the upper side of the green belt (3) is lower than the upper side of the road (2); a first stone retaining belt (34) is arranged between the green belt (3) and the road (2); a second stone retaining belt (35) is arranged between adjacent green belts (3); and the distance between adjacent second stone retaining belts (35) is greater than the distance between adjacent second stone retaining belts (35). A drainage ditch (4) is arranged between the two sides of the road (2), the upper side of the drainage ditch (4) is flush with the upper side of the road (2), both sides of the drainage ditch (4) are inclined downward, and a plurality of drainage holes (351) penetrating the second stone retaining belt (35) are provided on the second stone retaining belt (35) from the drainage ditch (4) to the direction of the green belt (3) and inclined downward, and a rainwater well (41) is vertically provided in the roadbed (1) at one end of the drainage ditch (4) away from the road (2); An overflow well (5) is vertically fixedly connected to the middle of the green belt (3); the upper end of the overflow well (5) is higher than the upper side of the green belt (3) and lower than the lower side of the drainage hole (351); the lower end of the overflow well (5) is fixedly connected to a water pipe (56) connected to the rainwater well (41); a water storage well (6) connected to the rainwater well (41) is provided in the roadbed (1); one side of the water storage well (6) is fixedly connected to a one-way seepage pipe (61) extending into the planting soil layer (31) of the green belt (3) and capable of seeping water into the planting soil layer (31); a control valve (611) is provided between the one-way seepage pipe (61) and the water storage well (6); The overflow well (5) comprises a wellbore (51) and a fixed cylinder (52) arranged at the upper end of the wellbore (51); the inner circumferential surface of the fixed cylinder (52) is fixedly connected to a limit ring (522); a floating plate (54) capable of covering the fixed cylinder (52) is arranged on the upper side of the fixed cylinder (52); a pull rod (544) extending into the fixed cylinder (52) is fixedly connected to the lower side of the floating plate (54); a baffle (545) having a diameter larger than the aperture of the limit ring (522) is fixedly connected to the lower end of the pull rod (544); and a plurality of water leakage holes (546) are opened on the upper side of the baffle (545); The outer periphery of the floating plate (54) is bent downward to form an arc shape, a hollow bag (541) is provided in the middle of the floating plate (54), and the floating plate (54) is evenly provided with a plurality of strip holes (542) with one end extending out of the outer periphery of the floating plate (54) with the hollow bag (541) as the center, and the other end of each strip hole (542) is closed; The outer side of the green belt (3) corresponding to the overflow well 1 (5) is provided with a protective filter screen cover (36).

2. The urban road sponge system according to claim 1, characterized in that: A sunken green space (7) is provided on one side of the roadbed (1). The sunken green space (7) includes original planting soil (71), a gravel layer (72) and a sunken aquifer (73) from bottom to top. An anti-seepage membrane (74) is provided on the outside of the original planting soil (71). The upper side of the aquifer (73) of the sunken green space (7) is lower than the upper side of the green belt (3). The middle vertical structure of the sunken green space (7) is aligned with the overflow well ( 5) A second overflow well (75) of the same structure, wherein the upper end of the second overflow well (75) is higher than the 2 / 3 position of the sunken aquifer (73) and lower than the upper side of the sunken aquifer (73), the lower end of the second overflow well (75) is connected to the rainwater well (41), and the water storage well (6) is provided with a second one-way seepage pipe (62) extending into the original planting soil (71) of the sunken green space (7) and capable of seeping water into the original planting soil (71).

3. The urban road sponge system according to claim 2, characterized in that: A second water pipe (57) extending into the aquifer (73) of the sunken green space (7) is fixedly connected to the lower end of the overflow well (5); a first regulating valve (561) is provided between the first water pipe (56) and the overflow well (5); and a second regulating valve (571) is fixedly connected between the second water pipe (57) and the overflow well (5).

4. The urban road sponge system according to claim 1, characterized in that: The lower side of the floating plate (54) is connected to a flexible telescopic net sleeve (543) sleeved on the outside of the fixed cylinder (52), and the lower end of the flexible telescopic net sleeve (543) is fixedly connected to the lower end of the fixed cylinder (52).

5. The urban road sponge system according to claim 1, characterized in that: The lower end of the fixed tube (52) is fixedly connected to an external threaded sleeve (521), the upper end of the wellbore (51) is fixedly connected to an internal threaded sleeve (511) that can be connected to the external threaded sleeve (521), and an elastic sealing ring (53) is fixedly connected to the outer side of the fixed tube (52) corresponding to the external threaded sleeve (521) and the inner side of the wellbore (51) corresponding to the internal threaded sleeve (511).

6. The urban road sponge system according to claim 1, characterized in that: The fixed cylinder (52) is detachably connected with a second anti-fouling hanging net (55), wherein the second anti-fouling hanging net (55) comprises a connecting net (421) stacked in multiple layers, and a plurality of connecting wires (422) are fixedly connected between two adjacent layers of the connecting net (421).

7. The urban road sponge system according to claim 6, characterized in that: A manhole cover (411) is arranged on the upper side of the rainwater well (41), and a plurality of water flow holes (412) are opened on the manhole cover (411). An anti-fouling net 1 (42) having the same structure as the anti-fouling net 2 (55) is fixedly connected to the lower side of the manhole cover (411).

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