CN212835636U - Road biological purification area of being detained based on sponge city - Google Patents

Abstract

The utility model relates to a road biological purification area of being detained based on sponge city belongs to road engineering technical field. The water storage tank is characterized by sequentially comprising a vegetable layer, a soil matrix layer, a purification filter layer, a permeable geotextile layer and a water storage layer from top to bottom, wherein the vegetable layer is provided with a plurality of water storage tanks, a pebble layer and a first humus layer are laid on the water storage tanks from top to bottom, the bottom of the first humus layer is provided with a drain pipe communicated with the soil matrix layer, a filter plate is arranged on the pebble layer, and a plurality of filter holes are formed in the filter plate. The utility model has the advantages of the cobble on the cobble layer is difficult for losing, keeps the cobble layer better to the filter effect of great debris.

Description

Road biological purification area of being detained based on sponge city

Technical Field

The utility model belongs to the technical field of the road engineering technique and specifically relates to a road biological purification area of being detained based on sponge city is related to.

Background

The sponge city is a new generation of city rain and flood management concept, is used for water absorption, water storage, water seepage and water purification, releases and utilizes the stored water when needed, and solves the problem of water accumulation of the traditional road. The bioretention facility is a part of a sponge city, is built in an area with a lower terrain, stores, seeps and purifies runoff rainwater through a plant, soil and microorganism system, and is divided into a rainwater garden, a bioretention zone, a high-position flower bed and the like according to different application positions. The biological detention zone is arranged at residential areas and urban ditches of the division zones, namely the middle division zone and the side division zone, which are generally arranged on urban roads, so that the water seepage, water storage, water purification, water detention and drainage functions of the biological purification detention zone can be exerted while the requirements of urban landscape effect and greening rate are met.

The patent of Chinese utility model with the publication number of CN209039914U discloses a road biological purification detention belt based on a sponge city, which is provided with a vegetable layer and a soil matrix layer from top to bottom in sequence, purification filter layer, geotechnological cloth layer and the water-storage layer permeates water, the inside blind pipe that permeates water that is equipped with of water-storage layer, a plurality of recessed catch basin has been seted up to the vegetable layer, the one end of the guiding gutter of vegetable layer upper surface is seted up in the catch basin intercommunication, the other end of guiding gutter extends to the road both sides along the vegetable layer upper surface, the surface from the top down of catch basin has laid cobble layer and humus layer, the bottom of humus layer is equipped with the drain pipe of intercommunication soil matrix layer, be equipped with the thru hole on each drain pipe, be equipped with the spongy permeate thing between humus layer and the drain pipe, be equipped with the osmotic membrane between soil matrix layer and the purification filter layer.

The biological purification detention zone has the following defects: pebbles in a pebble layer arranged on the water storage tank can move randomly and are easy to separate from the pebble layer under the action of external force, for example, when people walk and kick, and children take the pebbles to play, so that the pebble layer is possibly reduced after being used for a long time, and the filtering effect of the pebble layer on sundries with larger volume is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a road biological purification area of being detained based on sponge city, the cobble on its cobble layer is difficult for losing, keeps the filter effect of cobble layer to great debris.

The utility model discloses an above-mentioned function can be realized through following technical scheme:

the utility model provides a road biological purification area of being detained based on sponge city, from the top down includes vegetation layer, soil matrix layer, purification filter layer, the geotechnological cloth layer and the water-storage layer that permeates water in proper order, and a plurality of catch basin has been seted up to the vegetation layer, and the catch basin from the top down has laid cobble layer and first humus soil layer, and the bottom on first humus soil layer is equipped with the drain pipe that communicates soil matrix layer, be provided with the filter on the cobble layer, a plurality of filtration pores have been seted up on the filter.

Through adopting above-mentioned technical scheme, filter through setting up covers the intraformational cobble of cobble, make the cobble be difficult to lose, the filter that sets up itself simultaneously has the filter effect, can filter the impurity that the diameter is greater than the filtration pore diameter earlier, make the catch basin top better to the filter effect of great debris, further filter can also restrict the removal of cobble to a certain extent, make the better maintenance of each position thickness in cobble layer unanimous, debris are difficult to go deep into downwards through the removal of cobble.

The present invention may be further configured in a preferred embodiment as: the lower plate surface of the filter plate is provided with a plurality of inserting columns which are inserted in the pebble layer.

Through adopting above-mentioned technical scheme, set up and insert the post for the filter cartridge is on the cobble layer, better fixed filter, inserts the post simultaneously and inserts the intraformational cobble of cobble layer extrusion cobble, makes the cobble layer inseparabler, and the cobble is difficult to more remove, laminates more under the extrusion between the intraformational cobble of cobble, makes the filter effect on cobble layer better.

The present invention may be further configured in a preferred embodiment as: the vegetation layer comprises a planting area and a water flowing area, a water permeable brick is laid in the planting area, and a plurality of growing holes are vertically formed in the water permeable brick.

Through adopting above-mentioned technical scheme, the brick that permeates water that sets up is less to the infiltration influence of rainwater, protects the vegetable layer, reduces vegetable layer soil loss, keeps leveling of vegetable layer simultaneously, and the growth hole that the brick that permeates water was seted up supplies vegetation.

The present invention may be further configured in a preferred embodiment as: the vegetation layer upper surface has still seted up the guiding gutter, guiding gutter one end with the catch basin intercommunication other end extends to the road along the vegetation layer upper surface, also be provided with the cobble layer in the guiding gutter, just the guiding gutter along the one end that is close to the road to with the one end of catch basin intercommunication deepens gradually.

Through adopting above-mentioned technical scheme, the guiding gutter plays the effect of water conservancy diversion, and the rainwater on road surface reduces the ponding of road through the faster entering catch basin of guiding gutter, and the one end that the guiding gutter is close to the road is higher for the rainwater is faster in the guiding gutter flows into the catch basin, and the cobble layer that sets up in the guiding gutter also plays the filtering action.

The present invention may be further configured in a preferred embodiment as: the drain pipe includes receiving element, rake and horizontal part, the tip of receiving element upper end is the bowl form, the lower part of receiving element with the horizontal part passes through rake interconnect, the rake lower extreme is towards keeping away from the direction slope of receiving element, the rake with the horizontal part all is provided with a plurality ofly, and is a plurality of the rake and a plurality of the horizontal part are followed the circumference interval setting of receiving element, a plurality of water holes have been seted up on the drain pipe.

Through adopting above-mentioned technical scheme, drain pipe intercommunication catch basin and soil matrix layer, play the effect of water conservancy diversion to the rainwater in the catch basin, accelerate rainwater downward flow's speed, promote the drainage, be difficult for causing ponding, the rainwater in the better receipt catch basin of bowl form is set to the receiving portion upper end, lead to the soil matrix layer through rake and horizontal part to water, the water hole on rethread rake and the horizontal part, make rainwater infiltration soil matrix layer, simultaneously because horizontal part and rake have a plurality ofly and extend to the direction of keeping away from the montant, make it is more reasonable to distribute in the soil matrix layer, be favorable to in the faster infiltration soil matrix layer of rainwater.

The present invention may be further configured in a preferred embodiment as: and a drainage blind pipe is filled in the drainage pipe.

Through adopting above-mentioned technical scheme, the drainage blind pipe of filling plays the water conservancy diversion effect, and the drainage blind pipe has high surface infiltration ability and inside ability of leading to water, and the position that mainly plays is horizontal part department, makes the rainwater not fill completely in the horizontal part immediately, and the rainwater also can be fine circulation in the horizontal part, and the infiltration of rainwater is accelerated to the outer soil matrix layer of water hole and the water hole on the make full use of horizontal part.

The present invention may be further configured in a preferred embodiment as: a water-permeable blind pipe is arranged in the water storage layer, an overflow pipe is arranged between the water-permeable blind pipe and the vegetable layer, and the upper end of the overflow pipe penetrates through the vegetable layer.

By adopting the technical scheme, rainwater can be discharged into the urban underground drainage network pipe through the permeable blind pipe, the arranged overflow pipe plays a role in direct water guiding, when more rainwater is accumulated on the ground and the water guiding capacity of the retention belt cannot be followed up, the rainwater can be directly discharged from the overflow pipe, and the accumulated water on the road surface is reduced.

The present invention may be further configured in a preferred embodiment as: and a filter screen is arranged at the upper end of the overflow pipe.

Through adopting above-mentioned technical scheme, the installation filter screen plays the filtering action to the rainwater of directly leading away through the overflow pipe, filters large granule impurity, reduces the overflow pipe and the blind pipe that permeates water and blocks up the possibility.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the pebbles in the pebble layer are covered by the arranged filter plate, so that the pebbles are not easy to lose, and meanwhile, the arranged filter plate has a filtering effect, so that impurities with the diameter larger than the aperture of the filtering hole can be filtered in one step, and the filtering effect on larger impurities above the water storage tank is better;

2. the arranged diversion trench plays a role in diversion, rainwater on the road surface enters the water storage trench through the diversion trench more quickly, accumulated water on the road is reduced, one end of the diversion trench close to the road is higher, so that the rainwater flows into the water storage trench more quickly in the diversion trench, and a pebble layer arranged in the diversion trench also plays a role in filtration;

3. set up the blind pipe and the overflow pipe of permeating water, during the rainwater can be discharged city underground drainage network pipe through the blind pipe of permeating water, the overflow pipe of setting played direct water guide effect, and when the rainwater was more, subaerial accumulation too much ponding and the water guide ability of detention area can not keep up again, the rainwater can be followed overflow pipe and directly drained away, reduces surface ponding.

Drawings

Fig. 1 is a top view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at A in FIG. 2;

FIG. 6 is a schematic structural view of a filter plate;

FIG. 7 is a top view of the mounting plate and the sponge permeate;

FIG. 8 is a schematic view of the structure of the drain pipe;

figure 9 is a cross-sectional view of the purification filter layer.

Reference numerals: 1. a vegetable layer; 11. a water storage tank; 12. a pebble layer; 13. a first humus layer; 14. mounting a plate; 141. mounting holes; 142. a sponge-like permeate; 15. a drain pipe; 151. a receiving section; 152. an inclined portion; 153. a horizontal portion; 154. a water pore; 155. a drainage blind pipe; 16. a filter plate; 161. inserting a column; 162. a filtration pore; 17. water permeable bricks; 171. a growing hole; 18. a diversion trench; 2. a soil matrix layer; 3. a permeable membrane; 4. a purification and filtration layer; 41. filtering the sand layer; 42. a second humus soil layer; 43. a peat soil layer; 5. a permeable geotextile layer; 6. a aquifer; 61. a water-permeable blind pipe; 62. an overflow pipe; 63. a filter screen; 7. a waterproof geotextile layer; 8. a road.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a road biological purification area of being detained based on sponge city includes vegetable layer 1, soil matrix layer 2, osmotic membrane 3, purification and filtration layer 4, the geotechnological cloth layer 5 that permeates water, water-retaining layer 6 and waterproof geotechnological cloth layer 7 from the top down in proper order.

Waterproof geotechnical cloth layer 7 sets up in the outmost of biological purification area of being detained, and vegetable layer 1, soil matrix layer 2, purification and filtration layer 4, geotechnological cloth layer 5 and water-storage layer 6 are wrapped up by waterproof geotechnological cloth layer 7 for reduce the infiltration of rainwater to 8 roadbeds of road.

The vegetation layer 1 includes planting district and flowing water district, and planting district has laid water permeable brick 17, and a plurality of slot 171 have vertically been seted up on the water permeable brick 17, and water permeable brick 17 has a plurality ofly in this embodiment, and a plurality of water permeable brick 17 are arranged on vegetation layer 1, offer two slot 171 on every water permeable brick 17.

Referring to fig. 1 and 3, a plurality of water storage tanks 11 and diversion trenches 18 are arranged in the water flowing area of the vegetation layer 1, one end of each diversion trench 18 is communicated with the water storage tank 11, the other end of each diversion trench 18 extends to a road 8 along the upper surface of the vegetation layer 1, two diversion trenches 18 are arranged beside each water storage tank 11, the two diversion trenches 18 are communicated with the water storage tanks 11, the two diversion trenches 18 are respectively arranged between the water storage tanks 11 and the roads 8 on two sides, pebble layers 12 are paved in the diversion trenches 18, and the depth of each diversion trench 18 is gradually deepened towards the direction of one end, close to the road 8, of the diversion trench 18, communicated with the water storage tanks 11 (compare with fig. 4).

Referring to fig. 5, the wall of the storage tank 11 is a circular arc surface, so that rainwater can be gathered towards the bottom of the storage tank 11, in this embodiment, there are two storage tanks 11 (compare fig. 1), a pebble layer 12, a first humus layer 13, a spongy permeate 142 and a permeable membrane 3 are laid on the storage tanks 11 from top to bottom, and a drain pipe 15 communicated with the soil matrix layer 2 is arranged below the permeable membrane 3. In this embodiment, the sponge-like permeate 142 is a water-absorbent sponge.

The pebble layer 12 is used for blocking sundries with larger volume, has large pores and strong water permeability, and the pebble layer 12 in the water storage tank 11 is connected with the pebble layer 12 in the diversion trench 11 (compare with fig. 4).

Referring to fig. 5 and 6, the filtering plate 16 is disposed on the pebble layer 12, a plurality of inserting columns 161 are disposed on a lower plate surface of the filtering plate 16, the inserting columns 161 are inserted into the pebble layer 12, and the inserting columns 161 do not penetrate through the pebble layer 12, so that the filtering influence of the pebble layer 12 on the inserting columns 161 inserted into the pebble layer 12 is small, and a plurality of filtering holes 162 are disposed on the filtering plate 16.

First humus soil layer 13 is laid by humus soil and is formed, contains humus in the humus soil, has better adsorption efficiency to heavy metal pollutant for purify the pollutant in the rainwater, the protection water body, it can nourish the plant to have abundant nutrient substance in the humus soil simultaneously, and nutrient substance is through accumulator tank 11, then is absorbed by plant roots through drain pipe 15 infiltration soil matrix layer 2.

Referring to fig. 5 and 7, the spongy permeable substance 142 is too soft and is easily deformed, the mounting plate 14 is disposed under the first humus layer 13 to protect the spongy permeable substance 142, the mounting plate 14 is provided with a plurality of mounting holes 141, the mounting holes 141 are cylindrical structures vertically penetrating through the mounting plate 14, the spongy permeable substance 142 is filled in the mounting holes 141 and is also cylindrical, meanwhile, the mounting holes 141 can also be in other shapes such as a triangle, the mounting holes 141 are uniformly distributed on the mounting plate 14 and are arranged in an array, and the mounting plate 14 is made of an elastic material such as elastic plastic.

Referring to fig. 5 and 8, the drain pipe 15 includes a receiving portion 151, an inclined portion 152 and a horizontal portion 153, the upper end of the receiving portion 151 is in a bowl shape, the end surface of the receiving portion 151 is covered by the permeable membrane 3 in the reservoir 11, the upper end of the receiving portion 151 is sealed and opened with a plurality of water holes 154 for communication, the upper end surface of the receiving portion 151 is an arc surface, the middle of the receiving portion is low and all around is high, so that rainwater is gathered, the lower portion of the receiving portion 151 and the horizontal portion 153 are connected with each other through the inclined portion 152, the lower end of the inclined portion 152 inclines towards the direction far away from the receiving portion 151, one end of the horizontal portion 153 far away from the inclined portion 152 is arranged towards the direction far away from the receiving portion 151, the inclined portion 152 and the horizontal portion 153 are both provided with a plurality of water holes 154.

Referring to fig. 2 and 5, the permeable membrane 3 is a selective permeable membrane 3, which can only allow water molecules to permeate through, so that nutrients contained in rainwater are not easy to permeate into the purification and filtration layer 4, and the loss of nutrients in fertilizer is reduced.

Referring to fig. 2, the permeable geotextile layer 5 is used for filtering particulate matters, namely humus soil particles, sand particles and peat soil particles, carried in the rainwater after passing through the purification and filtration layer 4, and reducing the possibility that the particulate matters enter the water storage layer 6.

Referring to fig. 2 and 9, the purification and filtration layer 4 sequentially comprises a filtration sand layer 41, a second humus soil layer 42 and a peat soil layer 43 from top to bottom, the filtration sand layer 41 can intercept sundries with larger volume and has stronger water absorption and storage capacity, and the peat soil layer 43 contains a large number of holes and has strong adsorption capacity on microorganisms, impurities and heavy metal ions in water.

Referring to fig. 1 and 2, a water-permeable blind pipe 61 is arranged in the aquifer 6, an overflow pipe 62 is arranged between the water-permeable blind pipe 61 and the vegetation layer 1, the upper end of the overflow pipe 62 penetrates through the vegetation layer 1, a filter screen 63 is clamped at the upper end of the overflow pipe 62, and the upper end of the overflow pipe 62 penetrates out of a growing hole 171 of one water-permeable brick 17.

The drainage blind pipe 155 and the water permeable blind pipe 61 are mainly made of synthetic fibers, plastics, synthetic rubber and the like by different process methods, have hydrophobic material and small resistance, have extremely high surface water seepage capability and internal water permeability, and are widely applied to collection and drainage engineering at construction project destinations of civil engineering, traffic, water conservancy, industrial and civil mining, environmental protection and the like.

The implementation principle of the embodiment is as follows: rainwater flows into biological purification detention area and flows into catch basin 11 through guiding gutter 18 from road 8, rainwater on vegetable layer 1 infiltrates, rainwater in catch basin 11 passes through drain pipe 15 infiltration soil matrix layer 2, rainwater is saved and is infiltrated down, rainwater gets into purification filter layer 4 after osmotic membrane 3 filters, rainwater after the purification is saved and is infiltrated down, finally the rainwater assembles at catch basin 6, the blind pipe 61 that permeates water sends into the rainwater urban drainage network management, when the rainwater surpassed biological purification detention area save and water guide ability upper limit, overflow pipe 62 plays direct water guide effect, the rainwater can be directly discharged from overflow pipe 62.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a road biological purification area of being detained based on sponge city, from the top down includes vegetation layer (1) in proper order, soil matrix layer (2), purification and filtration layer (4), geotechnological cloth layer (5) and water-storage layer (6) permeate water, a plurality of catch basin (11) have been seted up in vegetation layer (1), pebble layer (12) and first humus soil layer (13) have been laid to catch basin (11) from the top down, the bottom of first humus soil layer (13) is equipped with drain pipe (15) that communicate soil matrix layer (2), its characterized in that: the pebble layer (12) is provided with a filter plate (16), and the filter plate (16) is provided with a plurality of filter holes (162).

2. The road biological purification detention zone based on sponge city as claimed in claim 1, characterized in that: the lower plate surface of the filter plate (16) is provided with a plurality of inserting columns (161), and the inserting columns (161) are inserted into the pebble layer (12).

3. The road biological purification detention zone based on sponge city as claimed in claim 1, characterized in that: the vegetation layer (1) comprises a planting area and a water flowing area, a water permeable brick (17) is laid in the planting area, and a plurality of growing holes (171) are vertically formed in the water permeable brick (17).

4. The road biological purification detention zone based on sponge city as claimed in claim 1, characterized in that: guiding gutter (18) have still been seted up to vegetable layer (1) upper surface, guiding gutter (18) one end with water storage tank (11) intercommunication other end extends to road (8) along vegetable layer (1) upper surface, also be provided with cobble layer (12) in guiding gutter (18), just guiding gutter (18) along the one end that is close to road (8) to with the one end of water storage tank (11) intercommunication gradually deepens.

5. The road biological purification detention zone based on sponge city as claimed in claim 1, characterized in that: the drain pipe (15) comprises a receiving part (151), an inclined part (152) and a horizontal part (153), the end part of the upper end of the receiving part (151) is in a bowl shape, the lower part of the receiving part (151) and the horizontal part (153) are connected with each other through the inclined part (152), the lower end of the inclined part (152) inclines towards the direction far away from the receiving part (151), the inclined part (152) and the horizontal part (153) are provided with a plurality of inclined parts (152) and a plurality of horizontal parts (153) along the circumferential interval of the receiving part (151), and a plurality of water holes (154) are formed in the drain pipe (15).

6. The road biological purification detention zone based on sponge city as claimed in claim 1, characterized in that: and a drainage blind pipe (155) is filled in the drainage pipe (15).

7. The road biological purification detention zone based on sponge city as claimed in claim 1, characterized in that: a water permeable blind pipe (61) is arranged in the water storage layer (6), an overflow pipe (62) is arranged between the water permeable blind pipe (61) and the vegetable layer (1), and the upper end of the overflow pipe (62) penetrates through the vegetable layer (1).

8. The road biological purification detention zone based on sponge city of claim 7, wherein: and a filter screen (63) is arranged at the upper end of the overflow pipe (62).

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