CN112177129A

CN112177129A - Sponge city rain and flood drainage system

Info

Publication number: CN112177129A
Application number: CN202010987938.2A
Authority: CN
Inventors: 张秋英; 汪文俊; 王奇勇; 方香林; 王佩
Original assignee: Wanjian Ecological Environment Construction Co ltd; Jian College
Current assignee: Wanjian Ecological Environment Construction Co ltd; Jian College
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-01-05

Abstract

The invention provides a sponge city rain flood drainage system, which comprises: the greening land comprises a planting soil layer, geotechnical cloth, a stone particle layer, a fine sand layer and a foundation body, a fine sand layer is laid on the top of the ground matrix, a stone particle layer is laid on the top of the fine sand layer, geotextile is laid on the top of the stone particle layer, the top surface of the geotextile is covered with a planting soil layer, the inside of the green land is symmetrically provided with the water wells, and the top parts of the water wells protrude out of the top surface of the green land, the sponge urban rainwater and flood drainage system can uniformly distribute the water seepage net pipes to permeate and guide rainwater to be drained into the water wells for storage, effectively improve the water seepage efficiency and the water seepage amount, avoid the waste caused by too deep and too wide penetration of the rainwater, and the water is kept uniform, and meanwhile, the water seepage net pipes are selectively plugged through the arrangement of the discharge control device, so that excessive loss of the water in the bottom layer in drought weather is effectively avoided, and the thinning and control of the water are realized.

Description

Sponge city rain and flood drainage system

Technical Field

The invention relates to the technical field of urban water conservancy, in particular to a sponge urban rainfall flood drainage system.

Background

The urban water-retaining agent can be used for the urban water-retaining agent, and has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters and the like a sponge, and can absorb, store, seep and purify water in the rainy period, and release and utilize the stored water as required, so that the natural ecological balance of the urban water-retaining agent is gradually improved and restored. In the process of sponge city construction, human and natural ecology are the priority principles, so the sponge city is defined as an ecological sponge city.

The drainage mode in sponge city is mainly directed at the quick emission to the rainwater, avoids piling up of rainwater, but the rainwater emission is great, refines the accuse of moisture inadequately, leads to the dry day phenomenon of lack of water to take place occasionally to do not embody the "sponge" effect in sponge city, the setting of present drainage facility simultaneously occupies certain afforestation area, leads to the green ring in city certain influence.

Therefore, there is a need to provide a new sponge city rain flood drainage system to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problem, the invention provides a sponge urban rainfall flood drainage system convenient for controlling and storing water.

The invention provides a sponge city rainfall flood drainage system, which comprises: the greening land comprises a planting soil layer, geotextile, a stone particle layer, a fine sand layer and a foundation body, wherein the fine sand layer is laid on the top of the foundation body, the stone particle layer is laid on the top of the fine sand layer, the geotextile is laid on the top of the stone particle layer, the planting soil layer covers the top surface of the geotextile, the water wells are symmetrically arranged in the greening land, the top of each water well protrudes out of the top surface of the greening land, water seepage network pipes are laid between the water wells in the greening land, the water seepage network pipes are laid between the fine sand layer and the foundation body, the water seepage network pipes are in a frame shape and are distributed at equal intervals, two ends of each water seepage network pipe are respectively connected with the water wells, and annular filtering ring nets are fixed at the water seepage communication positions in the water wells;

the greening ground surface is provided with a drainage channel at the side edge of the water well, the edge of the top opening of the drainage channel is provided with a stepped groove, cement layers are laid on the inner walls of the drainage channel and the stepped groove, green planting blocks are arranged at the top of the drainage channel at equal intervals, and two ends of each green planting block are correspondingly clamped with the stepped groove;

the water pump is arranged on the side edge of the top of the water well, the water pump is packaged outside the water pump, the water pump output end is connected with the drain pipe, the guide pipe is inserted into the water well and connected with the water pump input end, the hose is connected and installed at the bottom end of the guide pipe, and the filter head is installed at the bottom end of the hose;

the branch ends of the water seepage network pipes are provided with a drainage control device which is convenient for plugging the water seepage network pipes, the top of the drainage control device penetrates out of a green ground, and a floating linkage control mechanism for controlling the drainage amount is arranged in the well.

Preferably, the accuse row ware includes dilatation shell, shutoff piece, lead screw, slider, encapsulation section of thick bamboo, silk section of thick bamboo, end post, accomodates groove and turning handle, the branch end outside cup joints the dilatation shell of infiltration network management, the shutoff piece has been placed to the cooperation in the dilatation shell, dilatation shell top is fixed with an encapsulation section of thick bamboo, and encapsulates the section of thick bamboo top and wear out the afforestation ground, encapsulation section of thick bamboo top internal rotation installs a silk section of thick bamboo, the meshing of silk section of thick bamboo bottom is installed the lead screw, and lead screw bottom and shutoff piece fixed connection, the lead screw bottom is fixed with the slider, and slider and encapsulation section of thick bamboo sliding connection, silk section of thick bamboo top is fixed with the end post, the groove has been accomodate to end post surface symmetry has been seted up, and accomodate the inslot and install the turning handle through torsion spring elasticity.

Preferably, the infiltration network management includes upper tube shell, lower tube shell, sand grip and slot, upper tube shell and lower tube shell parallel arrangement, the upper tube shell bottom is fixed with the sand grip, the slot has been seted up at lower tube shell top, and sand grip and slot cooperation joint, the upper tube shell adopts the concrete that permeates water to make, lower tube shell bottom embedding is installed in the ground internal, the upper tube shell is buried in the fine sand layer.

Preferably, the overflow mechanism includes linking shell, warning pipe and spillway hole, link the shell and fix on well outer wall top, the well top is located links the inside warning hole of seting up of shell, it is connected with the warning pipe to link the shell surface to be located spillway hole below, warning pipe and drainage canal intercommunication.

Preferably, sense accuse mechanism includes float block, slide bar, foundation block, control box, steel wire, guide pulley, micro-gap switch, sloping block and reset spring, well bottom one side is fixed with the foundation block, and the foundation block top surface is fixed with the slide bar, the outside slip cap of slide bar is equipped with the float block, float block top surface is fixed with the steel wire, the control box is installed on well inner wall top, micro-gap switch is installed to the inside top surface of control box, slidable mounting has the sloping block in the control box, sloping block fixed surface has reset spring, and the sloping block passes through reset spring and control box fixed connection, the guide pulley is installed in the rotation of control box outer wall, and the steel wire walks around guide pulley and sloping block fixed connection, drainage mechanism's filter head is installed in float block bottom surface.

Preferably, the bottom of the stone grain layer is in a uniform concave-convex shape, the bottom of the stone grain layer is positioned between the water seepage net pipes and is in an upward arch shape, the stone grain layer is positioned at the corresponding position of the water seepage net pipes and is in a downward concave shape, and the bottom of the fine sand layer is positioned between the water seepage net pipes and is in an upward arch shape.

Preferably, the green piece of planting includes top cap, box body, logical groove, otter board, catching groove, knot piece, end opening, infiltration cloth layer and silver, the top cap has been placed at the box body top, the catching groove has been seted up to box body bilateral symmetry, top cap bottom surface both ends symmetry is fixed with the knot piece, and detains piece and catching groove cooperation joint, logical groove has been seted up to top cap surface equidistance, top cap bottom surface encapsulation is fixed with the otter board, the end opening has been seted up to box body bottom surface equidistance, two-layer infiltration cloth layer has been laid to the box body bottom surface, planting soil has been placed to box body inside position infiltration cloth layer top, it has the silver to alternate in the inside planting soil of box body, and the silver bottom passes in the.

Preferably, the greening ground surface is provided with side grooves at the side edges of the drainage channel, and the side grooves are uniformly accumulated with the gravel layers.

Compared with the related art, the sponge urban rain flood drainage system provided by the invention has the following beneficial effects:

the invention provides a sponge urban rain flood drainage system:

1. rainwater is uniformly distributed through the water seepage net pipes and is drained into a well in a penetrating and guiding mode and stored, and the stone grain layer and the fine sand layer are laid in a concave-convex mode, so that compared with the traditional simple surface drainage and centralized penetrating drainage in a greening area, the water seepage efficiency and the water seepage quantity are effectively improved, waste caused by too-deep and too-wide penetration of rainwater is avoided, and the water is kept uniformly;

2. by arranging the drainage controller, the water seepage network management is selectively plugged, so that excessive loss of the bottom layer water in drought weather is effectively avoided, the thinning and control of the water are realized, the drainage controller is more effective for maintaining the water compared with the traditional urban greening drainage facility, the water is maintained for green plants to the maximum, the irrigation frequency is reduced, the later greening management is optimized, and the sponge treatment of urban rainwater is more met;

3. through evenly placing green the piece of planting to the drainage canal top, realize the planting of module and fill, effectively increase the afforestation area, not only pleasing to the eye degree is higher, shelters from the drainage canal top moreover, effectively reduces the evaporation loss of moisture.

Drawings

FIG. 1 is a schematic view of the overall structure provided by the present invention;

fig. 2 is a schematic diagram of a distribution structure of a water seepage network pipe provided by the present invention;

FIG. 3 is a schematic view of a drainage mechanism according to the present invention;

FIG. 4 is a second schematic view of a drainage mechanism according to the present invention;

FIG. 5 is a schematic structural diagram of a sensing and controlling mechanism according to the present invention;

FIG. 6 is a second schematic view of a sensing and controlling mechanism according to the present invention;

FIG. 7 is a schematic view of the overall structure of a drainage channel according to the present invention;

FIG. 8 is a cross-sectional view of a drain provided by the present invention;

FIG. 9 is a schematic view of a green plant block according to the present invention;

FIG. 10 is a second schematic view of a green plant block according to the present invention;

FIG. 11 is a schematic structural diagram of a row controller according to the present invention;

FIG. 12 is a schematic view of a structure of a green land provided by the present invention;

fig. 13 is a schematic cross-sectional structure view of the water permeable mesh tube provided by the present invention.

Reference numbers in the figures: 1. greening land; 11. planting a soil layer; 12. geotextile; 13. a stone particle layer; 14. a fine sand layer; 15. a ground substrate; 2. a water well; 21. filtering the looped network; 3. a drainage channel; 31. a cement layer; 32. a stepped groove; 4. green plant blocks; 41. a top cover; 42. a box body; 43. a through groove; 44. a screen plate; 45. buckling grooves; 46. buckling blocks; 47. a bottom opening; 48. a water permeable cloth layer; 49. a cotton sliver; 5. a row controller; 51. expanding the shell; 52. a plugging block; 53. a screw rod; 54. a slider; 55. packaging the cylinder; 56. a wire barrel; 57. an end post; 58. a receiving groove; 59. a handle is rotated; 6. a drainage mechanism; 61. a drain pipe; 62. a water pump; 63. protecting the shell; 64. a conduit; 65. a hose; 66. a filter head; 7. a water seepage network pipe; 71. an upper pipe shell; 72. a pipe shell is arranged; 73. a convex strip; 74. a slot; 8. an overflow mechanism; 81. connecting the shell; 82. an overflow pipe; 83. an overflow hole; 9. a sensing and controlling mechanism; 91. floating body blocks; 92. a slide bar; 93. a bottom block; 94. a control box; 95. a steel wire; 96. a guide wheel; 97. a microswitch; 98. a sloping block; 99. a return spring; 10. a side groove; 101. and (4) a crushed stone layer.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12 and fig. 13 in combination, wherein fig. 1 is a schematic diagram of an overall structure provided by the present invention; fig. 2 is a schematic diagram of a distribution structure of a water seepage network pipe provided by the present invention; FIG. 3 is a schematic view of a drainage mechanism according to the present invention; FIG. 4 is a second schematic view of a drainage mechanism according to the present invention; FIG. 5 is a schematic structural diagram of a sensing and controlling mechanism according to the present invention; FIG. 6 is a second schematic view of a sensing and controlling mechanism according to the present invention; FIG. 7 is a schematic view of the overall structure of a drainage channel according to the present invention; FIG. 8 is a cross-sectional view of a drain provided by the present invention; FIG. 9 is a schematic view of a green plant block according to the present invention; FIG. 10 is a second schematic view of a green plant block according to the present invention; FIG. 11 is a schematic structural diagram of a row controller according to the present invention; FIG. 12 is a schematic view of a structure of a green land provided by the present invention; fig. 13 is a schematic cross-sectional structure view of the water permeable mesh tube provided by the present invention. Sponge city rain flood drainage system includes: greenery patches 1, wells 2 and water seepage net pipes 7.

In the specific implementation process, as shown in fig. 12, the green land 1 includes a planting soil layer 11, a geotextile 12, a stone particle layer 13, a fine sand layer 14 and a foundation body 15, a fine sand layer 14 is laid on the top of the foundation body 15, a stone particle layer 13 is laid on the top of the fine sand layer 14, a geotextile 12 is laid on the top of the stone particle layer 13, the top surface of the geotextile 12 is covered with the planting soil layer 11, greening vegetation is planted on the surface of the planting soil layer 11, nutrients and moisture are provided through the planting soil layer 11, rainwater enters the stone particle layer 13 through the planting soil layer 11 when the rainwater weather occurs, impurities in rainwater are filtered through the stone particle layer 13, then the rainwater penetrates downwards through the fine sand layer 14, the fine sand layer 14 has a moisture-preserving effect, the planting soil layer 11 is separated from the stone particle layer 13 by the geotextile 12, and the degree of penetration from the bottom of the planting soil layer 11 to the stone particle layer 13 is effectively reduced.

As shown in fig. 2 and 12, the water wells 2 are symmetrically arranged in the green land 1, the top of each water well 2 protrudes out of the top surface of the green land 1, the water seepage net pipes 7 are laid in the green land 1 between the water wells 2, the water seepage net pipes 7 are laid between the fine sand layer 14 and the foundation body 15, the water seepage net pipes 7 are in a frame shape and are distributed at equal intervals, two ends of each water seepage net pipe 7 are respectively connected with the water wells 2, excessive water in the foundation body 15 is drained into the water wells 2 through the water seepage net pipes 7 after passing through the water seepage net pipes 7 for storage, the water seepage in the green areas is uniformly distributed through the water seepage net pipes 7, and water accumulation on the surfaces of the planting soil layers 11 is effectively avoided.

As shown in fig. 4, an annular filtering ring net 21 is fixed inside the well 2 at the communication position of the water seepage net pipe 7, water drained from the water seepage net pipe 7 is filtered through the filtering ring net 21, and impurities in the water are effectively reduced and accumulated in the well 2, so that the cleaning period of the well 2 is greatly prolonged, and convenience is brought to later maintenance.

As shown in fig. 8, a drainage channel 3 is formed in the surface of the green land 1 and located on the side edge of the water well 2, a stepped groove 32 is formed in the edge of the top opening of the drainage channel 3, cement layers 31 are laid on the inner walls of the drainage channel 3 and the stepped groove 32, green plants 4 are equidistantly arranged on the top of the drainage channel 3, two ends of each green plant 4 are correspondingly clamped with the stepped groove 32, the drainage channel 3 is connected with a municipal main sewer, the drainage channel 3 is used for draining excessive rainwater, the cement layers 31 are arranged to protect the inner layer of the drainage channel 3, so that water and soil loss is avoided, later-period cleaning and maintenance are facilitated, the green plants 4 are conveniently placed due to the stepped groove 32, the green plants 4 are used for planting in a modular manner, the road skid area is increased, and meanwhile, evaporation of sunlight to water in the drainage channel 3;

overflow mechanism 8 is installed at 2 top openings of well edges, and overflow mechanism 8 is connected with drainage channel 3, and overflow mechanism 8 sets up and is used for discharging the excessive rainwater in the well 2 fast to drainage channel 3, avoids causing overflowing of rainwater to cause the influence to the afforestation region.

As shown in fig. 3 and 4, the drainage mechanism 6 is disposed inside the well 2, the drainage mechanism 6 includes a drainage pipe 61, a water pump 62, a casing 63, a conduit 64, a hose 65 and a filter 66, the water pump 62 is mounted on the side of the top of the well 2, the casing 63 is packaged outside the water pump 62, the drainage pipe 61 is connected to the output end of the water pump 62, the conduit 64 is inserted into the well 2, the conduit 64 is connected to the input end of the water pump 62, the hose 65 is connected to the bottom end of the conduit 64, the filter 66 is mounted at the bottom end of the hose 65, certain water is stored in the well 2, when the weather is dry, the water can be directly used for irrigating green plants, the water pump 62 is started to absorb the water in the well 2 through the hose 65, the water is led out through the conduit 64 and then connected to an irrigation device through the drainage pipe 61 for irrigation, the filter the sucked, to avoid blockage of the hose 65 and conduit 64 by impurities;

as shown in fig. 1, the branch ends of the water seepage network pipes 7 are respectively provided with a discharge control device 5 which is convenient for plugging the water seepage network pipes 7, the top of the discharge control device 5 penetrates out of the greening ground 1, and the water well 2 is internally provided with a floating linkage discharge control mechanism 9 for controlling the discharge amount.

As shown in fig. 11, the emission control device 5 includes an expansion shell 51, a blocking block 52, a lead screw 53, a slider 54, a packaging cylinder 55, a thread cylinder 56, an end post 57, a storage groove 58 and a rotating handle 59, the expansion shell 51 is sleeved outside the branch end of the water penetration thread management pipe 7, the blocking block 52 is placed in the expansion shell 51 in a matching manner, the top of the expansion shell 51 is fixed with the packaging cylinder 55, the top end of the packaging cylinder 55 penetrates through the greening ground 1, the thread cylinder 56 is rotatably mounted inside the top end of the packaging cylinder 55, the bottom end of the thread cylinder 56 is engaged with the lead screw 53, the bottom end of the lead screw 53 is fixedly connected with the blocking block 52, the bottom end of the lead screw 53 is fixed with the slider 54, the slider 54 is slidably connected with the packaging cylinder 55, the top end post 57 is fixed on the top end of the thread cylinder 56, the storage grooves 58 are symmetrically formed in the surface of the end post 57, and the rotating handle 59 is elastically mounted in the storage.

When the weather is dry, the water stored in the green land 1 can continuously permeate into the water seepage net pipe 7 to be discharged, in order to avoid later-stage irrigation, the interior of the green land 1 needs to be preserved, the rotating handle 59 is manually turned on, the end post 57 is rotated to rotate the wire barrel 56, the blocking block 52 is moved downwards through the meshing transmission of the screw rod 53 to block the water seepage net pipe 7, the water in the water seepage net pipe 7 is prevented from being discharged, the water retention is effectively improved, the irrigation time is slowed down, and the fine water control is realized.

As shown in fig. 13, the water seepage network pipe 7 includes an upper pipe shell 71, a lower pipe shell 72, a protruding strip 73 and a slot 74, the upper pipe shell 71 and the lower pipe shell 72 are arranged in parallel, the protruding strip 73 is fixed at the bottom end of the upper pipe shell 71, the slot 74 is formed at the top of the lower pipe shell 72, the protruding strip 73 is in fit clamping with the slot 74, the upper pipe shell 71 is made of water-permeable concrete, the bottom of the lower pipe shell 72 is embedded in the ground matrix 15, and the upper pipe shell 71 is buried in the fine sand layer 14.

The joint through sand grip 73 and slot 74 makes the convenient concatenation of infiltration network management 7 fixed, realizes leading-in moisture through the water permeability of last tube 71, and is convenient dredges water through infiltration network management 7.

As shown in fig. 4, the overflow mechanism 8 includes a connecting shell 81, an overflow pipe 82 and an overflow hole 83, the connecting shell 81 is fixed on the top end of the outer wall of the water well 2, the overflow hole 83 is formed in the top of the water well 2 located inside the connecting shell 81, the overflow pipe 82 is connected to the surface of the connecting shell 81 located below the overflow hole 83, and the overflow pipe 82 is communicated with the drainage channel 3.

When the water level in the well 2 is excessively raised, the excessive water is introduced into the coupling case 81 through the overflow hole 83, and is discharged through the overflow pipe 82, and the backflow of the water is effectively prevented due to the height difference between the overflow hole 83 and the overflow pipe 82.

As shown in fig. 5 and 6, the sensing and controlling mechanism 9 includes a floating block 91, a sliding rod 92, a bottom block 93, a control box 94, a steel wire 95, a guide wheel 96, a micro switch 97, an inclined block 98 and a return spring 99, the bottom block 93 is fixed on one side of the bottom of the water well 2, a sliding rod 92 is fixed on the top surface of the bottom block 93, a floating block 91 is slidably sleeved outside the sliding rod 92, a steel wire 95 is fixed on the top surface of the floating body block 91, a control box 94 is arranged at the top end of the inner wall of the well 2, a microswitch 97 is arranged on the top surface inside the control box 94, an inclined block 98 is arranged in the control box 94 in a sliding way, a return spring 99 is fixed on the surface of the inclined block 98, and the inclined block 98 is fixedly connected with the control box 94 through a return spring 99, the outer wall of the control box 94 is rotatably provided with a guide wheel 96, and the steel wire 95 is fixedly connected with an inclined block 98 by bypassing the guide wheel 96, and the filter head 66 of the drainage mechanism 6 is arranged on the bottom surface of the floating block 91.

The floating body block 91 floats in the water in the well 2, when the water level in the well 2 excessively drops, the floating body block 91 moves downwards along the slide rod 92 and pulls the steel wire 95 to move downwards, so that the inclined block 98 overcomes the elastic force of the return spring 99 to slide and move, the inclined block 98 is contacted with the microswitch 97, and the microswitch 97 is connected with a corresponding alarm or prompt device to prompt the dry state conveniently.

As shown in fig. 12, the bottom surface of the stone particle layer 13 is uniformly concave-convex, the bottom of the stone particle layer 13 is located between the water-permeable net pipes 7 and is upwardly arched, the stone particle layer 13 is located at a position corresponding to the water-permeable net pipes 7 and is downwardly concave, the bottom of the fine sand layer 14 is located between the water-permeable net pipes 7 and is upwardly arched, and the protruded stone particle layer 13 prevents the water from being discharged by permeating along the top of the water-permeable net pipes 7 by concentrating and dredging the concave part of the stone particle layer 13 because the hydrophobicity of the stone particle layer 13 is greater than that of the fine sand layer 14, thereby preventing the water from being excessively diffused to reduce the recovery amount and increasing the water dredging effect by the protruded fine sand layer 14.

As shown in fig. 9 and 10, the green piece 4 of planting includes top cap 41, box body 42, logical groove 43, otter board 44, catching groove 45, knot piece 46, end opening 47, infiltration cloth layer 48 and silver 49, top cap 41 has been placed at the box body 42 top, catching groove 45 has been seted up to box body 42 bilateral symmetry, top cap 41 bottom surface both ends symmetry is fixed with knot piece 46, and detains piece 46 and catching groove 45 cooperation joint, logical groove 43 has been seted up to top cap 41 surface equidistance, top cap 41 bottom surface encapsulation is fixed with otter board 44, end opening 47 has been seted up to box body 42 bottom surface equidistance, two-layer infiltration cloth layer 48 has been laid to box body 42 bottom surface, planting soil has been placed to inside being located infiltration cloth layer 48 top of box body 42, it has silver 49 to alternate in the inside planting soil of box body 42, and the leading-in drainage canal 3 of end opening 47 is passed.

Adopt green planting piece 4 to carry out the modularization and plant green, press knot piece 46 break away from to dismantle top cap 41 with the joint of catching groove 45, plant the seed in the soil of box body 42, and the lid closes top cap 41 and places green planting piece 4 in ladder groove 32, guide moisture to top cap 41 in through silver 49, replenish moisture constantly to the plant, the plant grows out top cap 41 through leading to groove 43 and forms the green planting of modularization, not only increase the aesthetic property, and increase the afforestation area, shelter from the volatilization that reduces moisture to drainage channel 3 simultaneously, it is comparatively convenient to maintain later stage.

As shown in fig. 8, the side groove 10 has been seted up to greenery patches 1 surface position in drainage channel 3 side, and evenly has piled up the metalling 101 in the side groove 10, and the water that spills over fast on greenery patches 1 surface is filtered in piling up of metalling 101, avoids the weeds that moisture erodeed to cause the jam in drainage channel 3, also concentrates the fender to weeds, the later stage clearance of being convenient for.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A sponge city rain flood drainage system comprising: the greening land comprises a greening land (1), water wells (2) and water seepage net pipes (7), and is characterized in that the greening land (1) comprises planting soil layers (11), geotextiles (12), stone particle layers (13), fine sand layers (14) and a land base body (15), wherein the top of the land base body (15) is paved with the fine sand layers (14), the top of the fine sand layers (14) is paved with the stone particle layers (13), the top of the stone particle layers (13) is paved with the geotextiles (12), the top surface of the geotextile (12) is covered with the planting soil layers (11), the water wells (2) are symmetrically arranged in the greening land (1), the top of the water wells (2) protrudes out of the top surface of the greening land (1), the water seepage net pipes (7) are paved between the fine sand layers (14) and the land base body (15), and the water seepage net pipes (7) are in a frame shape distributed at equal intervals, two ends of the water seepage net pipe (7) are respectively connected with the water well (2), and an annular filtering ring net (21) is fixed in the water well (2) at the communication part of the water seepage net pipe (7);

the water drainage channel (3) is formed in the surface of the green land (1) and located on the side edge of the water well (2), the step groove (32) is formed in the edge of the top opening of the water drainage channel (3), cement layers (31) are laid on the inner walls of the water drainage channel (3) and the step groove (32), green planting blocks (4) are arranged on the top of the water drainage channel (3) at equal intervals, and the two ends of each green planting block (4) are correspondingly clamped with the step groove (32);

the water drainage device is characterized in that an overflow mechanism (8) is installed on the edge of the top opening of the water well (2), the overflow mechanism (8) is connected with the drainage channel (3), a drainage mechanism (6) is arranged inside the water well (2), the drainage mechanism (6) comprises a drainage mechanism (6) and a drainage pipe (61), a water pump (62), a protective shell (63), a conduit (64), a hose (65) and a filter head (66), the water pump (62) is installed on the side edge of the top of the water well (2), the protective shell (63) is packaged outside the water pump (62), the output end of the water pump (62) is connected with the drainage pipe (61), the conduit (64) is inserted into the water well (2), the conduit (64) is connected with the input end of the water pump (62), the hose (65) is connected with the bottom end of the conduit (64), and the filter head (66) is;

the branch ends of the water seepage network pipes (7) are respectively provided with a control drainage device (5) which is convenient for plugging the water seepage network pipes (7), the top of the control drainage device (5) penetrates out of the greening ground (1), and a floating linkage control drainage quantity sensing and controlling mechanism (9) is arranged in the water well (2).

2. The sponge city rain flood drainage system according to claim 1, wherein the drainage controller (5) comprises an expansion shell (51), a blocking block (52), a screw rod (53), a sliding block (54), a packaging barrel (55), a wire barrel (56), an end column (57), a storage groove (58) and a rotating handle (59), the expansion shell (51) is sleeved outside a branch end of the water seepage network pipe (7), the blocking block (52) is fittingly placed in the expansion shell (51), the packaging barrel (55) is fixed at the top of the expansion shell (51), the top end of the packaging barrel (55) penetrates through the greening ground (1), the wire barrel (56) is rotatably installed inside the top end of the packaging barrel (55), the screw rod (53) is installed at the bottom end of the wire barrel (56) in a meshing manner, the bottom end of the screw rod (53) is fixedly connected with the blocking block (52), the sliding block (54) is fixed at the bottom end of the screw rod (53), and the sliding block (54) is in sliding connection with the packaging barrel (55), the top end of the wire barrel (56) is fixed with an end post (57), the surface of the end post (57) is symmetrically provided with accommodating grooves (58), and rotating handles (59) are elastically installed in the accommodating grooves (58) through torsion springs.

3. The sponge city rain flood drainage system according to claim 1, characterized in that the water seepage net pipe (7) comprises an upper pipe shell (71), a lower pipe shell (72), a convex strip (73) and a slot (74), the upper pipe shell (71) and the lower pipe shell (72) are arranged in parallel, the convex strip (73) is fixed at the bottom end of the upper pipe shell (71), the slot (74) is formed at the top of the lower pipe shell (72), the convex strip (73) is in fit clamping connection with the slot (74), the upper pipe shell (71) is made of water-permeable concrete, the bottom of the lower pipe shell (72) is embedded in the ground matrix (15), and the upper pipe shell (71) is embedded in the fine sand layer (14).

4. A sponge city rain flood drainage system according to claim 1, characterized in that the overflow mechanism (8) comprises a connecting shell (81), overflow pipes (82) and overflow holes (83), the connecting shell (81) is fixed on the top of the outer wall of the water well (2), the overflow holes (83) are formed in the top of the water well (2) located inside the connecting shell (81), the overflow pipes (82) are connected to the surface of the connecting shell (81) located below the overflow holes (83), and the overflow pipes (82) are communicated with the drainage channel (3).

5. The sponge city rain and flood drainage system according to claim 1, wherein the sensing and control mechanism (9) comprises a floating block (91), a sliding rod (92), a bottom block (93), a control box (94), a steel wire (95), a guide wheel (96), a microswitch (97), an inclined block (98) and a return spring (99), the bottom block (93) is fixed on one side of the bottom of the well (2), the sliding rod (92) is fixed on the top surface of the bottom block (93), the floating block (91) is slidably sleeved outside the sliding rod (92), the steel wire (95) is fixed on the top surface of the floating block (91), the control box (94) is installed on the top end of the inner wall of the well (2), the microswitch (97) is installed on the top surface of the inside of the control box (94), the inclined block (98) is slidably installed in the control box (94), and the return spring (99) is fixed on the surface of the inclined block (, and the inclined block (98) is fixedly connected with the control box (94) through a return spring (99), the outer wall of the control box (94) is rotatably provided with a guide wheel (96), a steel wire (95) bypasses the guide wheel (96) and is fixedly connected with the inclined block (98), and a filter head (66) of the drainage mechanism (6) is arranged on the bottom surface of the floating block (91).

6. The sponge city rain flood drainage system according to claim 1, characterized in that the bottom surface of the stone particle layer (13) is uniformly concave-convex, the bottom of the stone particle layer (13) is upwardly arched between the water seepage net pipes (7), the stone particle layer (13) is downwardly concave at the corresponding position of the water seepage net pipes (7), and the bottom of the fine sand layer (14) is upwardly arched between the water seepage net pipes (7).

7. The sponge city rain flood drainage system according to claim 1, characterized in that the green planting block (4) comprises a top cover (41), a box body (42), a through groove (43), a mesh plate (44), a catching groove (45), a catching block (46), a bottom opening (47), a water permeable cloth layer (48) and a cotton sliver (49), the top cover (41) is placed on the top of the box body (42), the catching groove (45) is symmetrically formed on two sides of the box body (42), the two ends of the bottom surface of the top cover (41) are symmetrically fixed with the catching block (46), the catching block (46) is matched and connected with the catching groove (45), the through groove (43) is formed on the surface of the top cover (41) at equal intervals, the mesh plate (44) is fixed on the bottom surface of the top cover (41) in a packaging manner, the bottom opening (47) is formed on the bottom surface of the box body (42) at equal intervals, two water permeable cloth layers (48) are laid on the bottom surface of, a cotton sliver (49) penetrates through planting soil in the box body (42), and the bottom end of the cotton sliver (49) penetrates through the bottom opening (47) and is guided into the drainage channel (3).

8. The sponge city rain flood drainage system according to claim 1, characterized in that side grooves (10) are formed in the surface of the green land (1) at the side edges of the drainage channels (3), and the crushed stone layers (101) are uniformly accumulated in the side grooves (10).